chore(release): dsh-v0.2.1-rc.3-r4 (#22)

Bump RELEASE_REVISION to r4 for the optional-hardening feature release and refresh every consuming manifest/doc. CHANGELOG.md is generated by the release workflow and is intentionally left untouched.

Co-authored-by: SREDevOpsAgents <agents@sredevops.org>

.dockerignore

@@ -1,149 +1,6 @@
-# Logs
+# The main image build clones DeepSeek Harness from git and copies nothing
-logs
+# from this repository, so the build context is intentionally reduced to the
-*.log
+# Dockerfile alone. This keeps builds fast and prevents the rest of the repo
-npm-debug.log*
+# (examples, docs, git history) from being sent to the builder.
-yarn-debug.log*
+*
-yarn-error.log*
+!Dockerfile
-lerna-debug.log*
-
-# Diagnostic reports (https://nodejs.org/api/report.html)
-report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
-
-# Runtime data
-pids
-*.pid
-*.seed
-*.pid.lock
-
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
-# Coverage directory used by tools like istanbul
-coverage
-*.lcov
-
-# nyc test coverage
-.nyc_output
-
-# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# Bower dependency directory (https://bower.io/)
-bower_components
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
-
-# Dependency directories
-node_modules/
-jspm_packages/
-
-# Snowpack dependency directory (https://snowpack.dev/)
-web_modules/
-
-# TypeScript cache
-*.tsbuildinfo
-
-# Optional npm cache directory
-.npm
-
-# Optional eslint cache
-.eslintcache
-
-# Optional stylelint cache
-.stylelintcache
-
-# Optional REPL history
-.node_repl_history
-
-# Output of 'npm pack'
-*.tgz
-
-# Yarn Integrity file
-.yarn-integrity
-
-# dotenv environment variable files
-.env
-.env.*
-!.env.example
-
-# parcel-bundler cache (https://parceljs.org/)
-.cache
-.parcel-cache
-
-# Next.js build output
-.next
-out
-
-# Nuxt.js build / generate output
-.nuxt
-dist
-.output
-
-# Gatsby files
-.cache/
-# Comment in the public line in if your project uses Gatsby and not Next.js
-# https://nextjs.org/blog/next-9-1#public-directory-support
-# public
-
-# vuepress build output
-.vuepress/dist
-
-# vuepress v2.x temp directory
-.temp
-
-# Sveltekit cache directory
-.svelte-kit/
-
-# vitepress build output
-**/.vitepress/dist
-
-# vitepress cache directory
-**/.vitepress/cache
-
-# Docusaurus cache and generated files
-.docusaurus
-
-# Serverless directories
-.serverless/
-
-# FuseBox cache
-.fusebox/
-
-# DynamoDB Local files
-.dynamodb/
-
-# Firebase cache directory
-.firebase/
-
-# TernJS port file
-.tern-port
-
-# Stores Visual Studio Code versions used for testing Visual Studio Code extensions
-.vscode-test
-
-# pnpm
-.pnpm-store
-
-# yarn v3
-.pnp.*
-.yarn/*
-!.yarn/patches
-!.yarn/plugins
-!.yarn/releases
-!.yarn/sdks
-!.yarn/versions
-
-# Vite files
-vite.config.js.timestamp-*
-vite.config.ts.timestamp-*
-.vite/
-
-# Astro generated types
-.astro/
-
-# Turbo Repo
-.turbo

.dsh/skills/dsh-agent-sandbox-platform/SKILL.md

@@ -0,0 +1,155 @@
+---
+name: dsh-agent-sandbox-platform
+description: >-
+  Operate and extend this repository's DeepSeek Harness-on-agent-sandbox platform:
+  warm pools, claims, sandbox suspend/resume, the gateway, and the optional
+  agent-sandbox MCP server, with version-aware safety and a read-only preflight.
+whenToUse: >-
+  Use when working in deepseek-kubernetes-sandbox or with Kubernetes agent-sandbox:
+  inspect or provision sandboxes, debug warm pools or claims, use
+  mcp__*__create_sandbox/execute_command, connect the agent-sandbox MCP server, or
+  add a manifest, gateway route, exposure variant, example, or version bump here.
+metadata:
+  author: sredevopsorg
+  version: "1.0.0"
+---
+
+# DSH agent-sandbox platform
+
+This repository runs DeepSeek Harness Web (DSH) as one sandbox per user on
+[agent-sandbox](https://github.com/kubernetes-sigs/agent-sandbox), with an
+optional official MCP server for sandbox execution. For generic cluster work
+load `kubernetes-kubectl-operations`; for profile MCP rows load
+`cordis-plugin-development`.
+
+## 0. Facts before action
+
+1. Read `AGENTS.md`, `versions.env`, the example README/architecture. The
+   control-plane pin is `AGENT_SANDBOX_VERSION`; release identity is
+   `DSH_VERSION` + `RELEASE_REVISION`.
+2. Establish context, user and namespace; never assume `dsh-demo`.
+3. Run `scripts/platform-preflight.sh --namespace <ns>` (read-only).
+4. If `mcp__*__create_sandbox`-style tools are absent, use `kubectl`; do not
+   install or enable a server on your own.
+
+## 1. Non-negotiables
+
+- **Read-only by default.** Change a cluster only when the user asked for that
+  exact change; show the command and rollback first.
+- **Scope every command** with `--context` and `-n`. `--all`/`-A` mutations and
+  deleting namespaces, PVCs, PVs, CRDs, or cluster-scoped objects need an
+  explicit, named confirmation.
+- **Secrets and logs stay private.** Never print Secret data, kubeconfigs, or
+  node logs. Pod logs can contain the DSH launch token.
+- **The MCP server has no authentication.** It is a full-access management
+  endpoint; never expose it. A DSH profile row affects every session.
+- **Clean up what you create.** Delete MCP-created sandboxes in the same
+  session; never leave orphaned claims running.
+- **Bound output.** Use `--tail`, `--since`, selectors, JSONPath, and
+  head/tail excerpts instead of whole manifests or huge logs.
+
+## 2. Choose the path
+
+| Need | Path |
+| --- | --- |
+| Inspect or change claims, pools, sandboxes, PVCs, gateway | `kubectl` + [platform runbook](references/platform-runbook.md) |
+| Run code or move files in a sandbox | agent-sandbox MCP, only for a runtime-capable template ([MCP reference](references/mcp-server.md)) |
+| Add or change a repository feature | [repo extension guide](references/extending-the-repo.md) |
+
+The MCP server cannot manage this example's DSH claims: its tools are scoped to
+claims created by the same MCP session. Use `kubectl` for the platform.
+
+## 3. Operate the platform
+
+Resolve user -> claim -> sandbox -> pod:
+
+```bash
+SB=$(kubectl -n "$NS" get sandboxclaim "$CLAIM" -o jsonpath='{.status.sandbox.name}')
+kubectl -n "$NS" get sandbox "$SB" -o jsonpath='{.status.conditions[?(@.type=="Ready")].status}{" "}{.status.conditions[?(@.type=="Ready")].reason}{"\n"}{.status.serviceFQDN}{"\n"}'
+POD=$(kubectl -n "$NS" get sandbox "$SB" -o jsonpath='{.metadata.annotations.agents\.x-k8s\.io/pod-name}'); POD=${POD:-$SB}
+```
+
+- Read runtime state from the Sandbox, not the claim: `spec.operatingMode`,
+  `Suspended`, `Ready`. The claim tracks binding, not liveness.
+- Suspend = patch `operatingMode: Suspended` (pod deleted, PVC + Service kept);
+  resume = `Running` + wait for `Ready`. The gateway wakes on connect.
+- Warm-pool spares carry `agents.x-k8s.io/warm-pool-sandbox`; adopted sandboxes
+  lose it. A pool with no spares makes signup cold and slow.
+- The DSH launch token appears once in pod logs; hand the user the `?token=` URL,
+  never the token in reports. Probe `/favicon.svg`.
+- The idle sweeper only suspends claims the gateway created.
+
+Full commands, security boundaries and failure matrix:
+[platform runbook](references/platform-runbook.md).
+
+## 4. Use the agent-sandbox MCP server within its limits
+
+Verified from the upstream server:
+
+- Tools: `create_sandbox`, `delete_sandbox`, `execute_command`, `upload_file`,
+  `download_file`, `list_files`, `file_exists`, `get_sandbox_status`; resource
+  `sandboxes://{namespace}`.
+- **Session-scoped:** every tool and the resource filter claims by
+  `K8S_SANDBOX_SESSION_ID_LABEL_KEY=<MCP session id>`. It cannot read, exec in,
+  or delete DSH platform claims or claims from a prior/reconnected session.
+- **Streamable HTTP only:** stdio has no MCP session id and fails. A DSH row must
+  use `transport: streamable-http`; health endpoints are `/healthz` and `/readyz`
+  at the root, the MCP endpoint is `/mcp`.
+- **Runtime required:** connection types target a sandbox runtime on 8888, or
+  sandboxd on 8080/9090. The DSH template listens only on 3080, so
+  `execute_command` cannot work against it. A sandboxd sidecar executes in its
+  own container, not DSH's.
+- **Timeouts:** `create_sandbox` waits up to 180 s, but the DSH MCP client's
+  default call timeout is 60 s; raise `toolCallTimeoutMs`.
+  `shutdown_after_seconds` defaults to 300 s (`null` disables it).
+- **Output:** servers before v1.0.8 return unbounded `execute_command` output.
+  v1.0.8 adds `max_output_chars` (128-300,000, default 30,000) and truncation
+  metadata. Never pass the new argument to an older server; redirect verbose
+  output and read a file instead.
+
+Deployment, connection matrix and DSH row:
+[MCP deployment](references/mcp-deployment.md). Limits and cleanup:
+[MCP reference](references/mcp-server.md).
+
+## 5. Extend the project
+
+Read `docs/examples.md` and the testing table in `AGENTS.md` before editing.
+
+- **Manifest step:** numbered `manifests/NN-*.yaml`, update the README step, run
+  `make check`; CI dry-runs it.
+- **Gateway:** edit `gateway/gateway.py` and `gateway/test_gateway.py`, update
+  the gateway README API table and architecture doc, run `make test` and
+  `make lint`. Keep the HTTP/WebSocket contract stable.
+- **Exposure variant:** one variant under `manifests/exposure/<variant>/`,
+  update the exposure README and trusted-host/cookie settings. Variants are
+  alternatives, never a stack.
+- **New example:** follow `docs/examples.md`, add the index entry, keep scripts
+  executable/idempotent/self-cleaning, run `make check`.
+- **Version bump:** edit `versions.env` only, update prerequisites, run
+  `make check` and the e2e. Never mix a bump with an unrelated feature.
+- **MCP integration:** pin the build to the cluster's tag, least-privilege SA,
+  ClusterIP + auth proxy, raised DSH timeout, no secrets in the repo.
+- **Optional hardening:** gVisor, `nodeSelector`, NetworkPolicy and extra
+  provider keys stay opt-in; the sandbox policy lives under
+  `manifests/optional/`. All four are documented in
+  `examples/dsh-agents-as-a-service/docs/optional-hardening.md`.
+- **Docs:** update the affected doc in the same change.
+
+Details and review checklist:
+[repo extension guide](references/extending-the-repo.md).
+
+## 6. Report and clean up
+
+State context/namespace, bounded evidence, conclusion, exact change, rollback,
+and resources deleted. Disable any MCP row enabled only for the task. Do not
+leave sandboxes, port-forwards, or temporary files behind.
+
+## References
+
+- [Platform runbook](references/platform-runbook.md)
+- [MCP deployment](references/mcp-deployment.md)
+- [MCP server reference](references/mcp-server.md)
+- [Repo extension guide](references/extending-the-repo.md)
+- [Troubleshooting](references/troubleshooting.md)
+- Upstream MCP server README:
+  https://github.com/kubernetes-sigs/agent-sandbox/blob/main/clients/integrations/mcp-server/README.md

.dsh/skills/dsh-agent-sandbox-platform/references/extending-the-repo.md

@@ -0,0 +1,132 @@
+# Extending the repository
+
+Read `AGENTS.md`, `docs/examples.md`, and the example README before editing.
+This repository is image-first: the Dockerfile is the primary artifact, every
+implementation is a self-contained example under `examples/<name>/`, and
+`versions.env` is the only source of pins. Documentation is part of the change.
+
+## Invariants
+
+- Never hard-code a version, image tag, or registry path; edit `versions.env`.
+  For the DSH release identity use `make set-version`, never ad-hoc `sed`.
+- Never commit a secret. Secret-shaped manifests are `*.yaml.example` with
+  placeholders; keys are documented only in `.env.sample`.
+- Manifests are numbered `NN-*.yaml` and apply in order with plain `kubectl`.
+  Exposure variants live under `manifests/exposure/<variant>/`, are documented
+  by one README, and are mutually exclusive.
+- Keep the gateway HTTP/WebSocket contract stable unless the change is explicitly
+  about it.
+- Do not edit `CHANGELOG.md` (generated by git-cliff) or rewrite git history.
+- Keep diffs scoped; do not mix a version bump with an unrelated feature.
+
+## Change matrix
+
+| Change | Edit | Minimum verification |
+| --- | --- | --- |
+| Documentation only | `*.md`, `docs/` | `make check`; relative links resolve |
+| Example manifest | `examples/<name>/manifests/NN-*.yaml`, README step | `make check`; server-side dry-run in CI |
+| Optional hardening | `manifests/optional/`, exposure NPs, example `docs/optional-hardening.md` | `make check`; manual verification on a capable cluster |
+| Gateway behavior/route | `gateway/gateway.py`, `gateway/test_gateway.py`, gateway README, architecture | `make test`, `make lint`; update tests and API docs |
+| Exposure variant | `manifests/exposure/<variant>/`, exposure README, example README | `make check`; apply exactly one variant |
+| New example | full `examples/<name>/` layout, `examples/README.md` | `make check`; CI dry-run; optional e2e |
+| Version bump | `versions.env`, affected docs/manifests | `make check`; CI installs the pin; e2e on a cluster |
+| MCP integration | deployment/RBAC, DSH row, docs | read-only `/readyz`; no secret in repo |
+| Workflow | `.github/workflows/` | actionlint; SHA-pinned actions; no hard-coded versions |
+
+## Recipes
+
+### Add or change a resource step
+
+1. Keep numbering stable; add `NN-*.yaml` at the end unless order matters.
+2. Update the matching numbered step in the example README.
+3. Keep cluster-specific state (node affinity, tuned replica counts) out of the
+   shipped manifest; document it as a local patch.
+4. Run `make check`. CI additionally parses every manifest and runs a
+   server-side dry-run against the agent-sandbox CRDs.
+
+### Change the gateway
+
+The gateway is a single-file Starlette app. A change usually touches:
+
+- `gateway/gateway.py` (route, auth, proxy, sweeper);
+- `gateway/test_gateway.py` (unit tests; no cluster required);
+- `gateway/README.md` (API table, configuration, auth semantics);
+- `examples/dsh-agents-as-a-service/docs/architecture.md` when flows change;
+- `examples/dsh-agents-as-a-service/README.md` when the walkthrough changes.
+
+Run `make test` and `make lint`. Preserve session-cookie auth, same-origin rules
+for cookie mutations and WebSocket upgrades, and the "waking"/`502`/`503`
+semantics unless the change is explicitly about them. Do not expose a trusted
+identity header unless the Service is reachable only through the proxy.
+
+### Add an exposure variant
+
+Create `manifests/exposure/<variant>/NN-*.yaml`, update
+`manifests/exposure/README.md` and the example README, and state the trust
+boundary. Variants are alternatives: never apply two paths to the same gateway.
+Set `DSH_TRUSTED_HOSTS` in the template for the public host and
+`COOKIE_SECURE=true` for HTTPS.
+
+### Add an example
+
+Follow `docs/examples.md`: `README.md`, `manifests/NN-*.yaml`, optional
+`manifests/exposure/` with a README, optional components with Dockerfile +
+README + tests, and executable, idempotent, self-cleaning scripts. Add the
+literal `examples/<name>/` entry to `examples/README.md`; `make check` enforces
+the layout. Publish component images under
+`<registry>/<owner>/<repo>/<example>/<component>`.
+
+### Bump a version
+
+- **DSH release identity:** `make set-version DSH_VERSION=<ref>
+  [RELEASE_REVISION=rN]`, then `make check`, then build and smoke-test the image.
+  Tags are immutable; fix a bad release with `-r(N+1)`.
+- **agent-sandbox:** edit `AGENT_SANDBOX_VERSION` in `versions.env`, update the
+  prerequisites in the example README, and note behavior changes (connection
+  types, MCP output limits, CRD fields). Install the new release YAML on a kind
+  cluster, then run `make check` and `make e2e`. Do not bump it inside an
+  unrelated PR.
+
+### Integrate the agent-sandbox MCP server
+
+Build from the cluster's pinned tag, give it a dedicated namespace and
+least-privilege ServiceAccount, keep it ClusterIP behind an authenticating
+proxy, and document how to reach `/readyz`. Add a DSH profile row only with user
+approval; a row affects every session. Never commit its credentials or a
+`cluster-admin` binding.
+
+### Documentation
+
+Update the doc whose behavior changed in the same commit: root README for the
+front door, `docs/` for repository-wide contracts, the example README for that
+walkthrough, the gateway README for API/config/auth. Skill docs live in
+`.dsh/skills/`; keep `SKILL.md` under ~8 KB and put depth in `references/`.
+`scripts/check-versions.sh` scans every `*.md` for stale `dsh-v…` tokens, so
+refer to "the release identity in `versions.env`" rather than copying a tag.
+
+## Verification and review
+
+Run at least `make check`; add `make test` and `make lint` for gateway/script
+changes. For manifests, use `kubectl apply --dry-run=server` against a cluster
+with the CRDs. For behavior changes, run the example or `make e2e`.
+
+Before reporting, review:
+
+- [ ] Diff is scoped; no generated files or unrelated changes.
+- [ ] Docs and examples match the new behavior.
+- [ ] Pins come only from `versions.env`; no stale version tokens.
+- [ ] No secrets or usable credentials; secret-shaped files are `.example`.
+- [ ] Manifests parse; exposure variants remain mutually exclusive.
+- [ ] Gateway tests and public contract unchanged or intentionally updated.
+- [ ] Skills: frontmatter valid, body within budget, scripts shellcheck-clean.
+- [ ] `CHANGELOG.md` untouched; branch/commit follow `docs/gitflow.md`.
+
+## Safe follow-ups enabled by this skill
+
+- A read-only preflight job or scheduled report using
+  `scripts/platform-preflight.sh`.
+- An MCP readiness check in the example e2e (health endpoints only).
+- A separate runtime warm pool for untrusted execution, leaving the DSH template
+  unchanged.
+- A combined DSH + sandboxd image only with an explicit maintenance/exec design
+  and a documented trust boundary.

.dsh/skills/dsh-agent-sandbox-platform/references/mcp-deployment.md

@@ -0,0 +1,94 @@
+# Deploying the agent-sandbox MCP server
+
+Read [the MCP reference](mcp-server.md) first. This file covers the connection
+matrix, a safe deployment shape, and the DSH profile row. The server is
+unauthenticated; its service account is the security boundary.
+
+## Connection matrix
+
+| `K8S_SANDBOX_CONNECTION__TYPE` | Required env | Use when |
+| --- | --- | --- |
+| `gateway` | `GATEWAY_NAME`, `GATEWAY_NAMESPACE=default`, `GATEWAY_READY_TIMEOUT=180`, `SERVER_PORT=8888` | Gateway API + implementation exist |
+| `direct` | `API_URL` (router URL), `SERVER_PORT=8888` | sandbox-router is deployed |
+| `in-cluster` | `USE_POD_IP=false` (DNS) or `true` (`status.podIPs`), `SERVER_PORT=8888` | Bypass the router from inside the cluster |
+| `sandboxd-in-cluster` (v1.0.8+) | `MODE=in-cluster-service` or `in-cluster-pod-ip`, `REST_PORT=8080`, `GRPC_PORT=9090` | Template runs sandboxd |
+
+Also set `K8S_SANDBOX_PROBE_NAMESPACE` to a namespace the server's service
+account can list claims in, and optionally
+`K8S_SANDBOX_SESSION_ID_LABEL_KEY` (default
+`mcp.k8s-agent-sandbox/session-id`).
+
+For `sandboxd-in-cluster` service mode the template needs `spec.service: true`.
+The default managed NetworkPolicy admits only sandbox-router, so add an ingress
+rule for the MCP server on 8080/9090. Supplying `spec.networkPolicy` replaces the
+secure defaults: also add the egress rules the sandbox needs, because an omitted
+egress list denies all outbound traffic. RBAC for that mode is
+`sandboxclaims` create/get/list/watch/delete and `sandboxes` get/list/watch; no
+`pods/portforward`.
+
+## Build and deploy (sketch)
+
+No official image reference is documented in the upstream README; pin what you
+build.
+
+```bash
+# AGENT_SANDBOX_VERSION comes from versions.env; never hard-code it.
+tmp="$(mktemp -d)"; trap 'rm -rf "$tmp"' EXIT
+git clone --depth 1 --branch "$AGENT_SANDBOX_VERSION" \
+  https://github.com/kubernetes-sigs/agent-sandbox.git "$tmp"
+docker build -t "$MCP_IMAGE" "$tmp/clients/integrations/mcp-server"
+```
+
+Kubernetes shape:
+
+- Dedicated namespace and ServiceAccount; a namespace-scoped Role granting only
+  `sandboxclaims` create/get/list/watch/delete and `sandboxes` get/list/watch.
+  No Secrets, no `pods/exec`, no cluster-admin.
+- Deployment: one replica, non-root, `readOnlyRootFilesystem`, dropped
+  capabilities, `K8S_SANDBOX_CONNECTION__TYPE=in-cluster`,
+  `K8S_SANDBOX_PROBE_NAMESPACE`, resource limits.
+- Probes: `GET /healthz` (liveness; never calls the API) and `GET /readyz`
+  (readiness; lists claims; use `periodSeconds: 15`, not aggressive polling).
+- ClusterIP Service on `8000`. Add a NetworkPolicy that allows only the intended
+  client namespace/pod. Never expose it through Ingress/LoadBalancer without an
+  authenticating proxy. The service account is the real boundary.
+
+## Connect it to DSH
+
+Add a profile MCP row (through the Plugins page/`plugin_manager`; see
+`cordis-plugin-development`). A row affects every session and needs approval.
+
+```yaml
+- insert:
+    - id: mcp-agent-sandbox
+      name: '@deepseek-ai/dsh-mcp-client'
+      config:
+        serverName: agent-sandbox
+        transport: streamable-http
+        url: http://agent-sandbox-mcp.example.svc.cluster.local:8000/mcp
+        toolCallTimeoutMs: 240000
+        failOnStartupError: false
+```
+
+- `serverName` must match `[A-Za-z0-9_-]{1,32}`; tools appear as
+  `mcp__<serverName>__<tool>`. Check the actual names in the tool list; do not
+  assume hyphens/underscores.
+- Raise `toolCallTimeoutMs` above `sandbox_ready_timeout` with headroom; the DSH
+  default is 60 s and would cancel a 180 s creation.
+- If the server is behind an authenticating proxy, pass its token via the row's
+  `headers` and an environment expression; never commit it.
+- To reach a locally port-forwarded server, use a loopback URL; the MCP session
+  still needs streamable HTTP.
+- Remove the row when it was enabled only for one task.
+
+## Deployment safety checklist
+
+- [ ] Build tag equals the cluster's `AGENT_SANDBOX_VERSION`.
+- [ ] Dedicated namespace/SA; RBAC limited to claims and sandboxes.
+- [ ] Service is ClusterIP; no public route without authentication.
+- [ ] NetworkPolicy admits only the DSH client and needed sandbox traffic.
+- [ ] `/readyz` succeeds with `K8S_SANDBOX_PROBE_NAMESPACE` set to a listable
+      namespace.
+- [ ] No Secret data in manifests, logs, or the repository.
+- [ ] Cleanup path documented: delete session-owned claims or wait for the
+      shutdown timeout.

.dsh/skills/dsh-agent-sandbox-platform/references/mcp-server.md

@@ -0,0 +1,103 @@
+# agent-sandbox MCP server reference
+
+Upstream: [clients/integrations/mcp-server](https://github.com/kubernetes-sigs/agent-sandbox/tree/main/clients/integrations/mcp-server).
+It is a Python/FastAPI + FastMCP service (streamable HTTP on `:8000`, MCP
+endpoint `/mcp`) that provisions sandboxes from a warm pool and runs commands or
+file operations through a sandbox runtime. It ships with **no authentication**.
+
+Build the server from the same tag as the cluster: read `AGENT_SANDBOX_VERSION`
+in `versions.env`, and check the installed controller image. Do not build from
+`main` against an older cluster; tool schemas and connection types differ.
+
+## Tool surface
+
+| Tool | Arguments (defaults) | Returns / notes |
+| --- | --- | --- |
+| `create_sandbox` | `warmpool`, `namespace`, `sandbox_ready_timeout=180`, `labels`, `shutdown_after_seconds=300` (`null` disables), `pod_labels`, `pod_annotations` | `sandbox_claim_name`; adds the MCP session label |
+| `delete_sandbox` | `sandbox_claim_name`, `namespace` | Deletes the session-owned claim; PVC cascades |
+| `execute_command` | `sandbox_claim_name`, `namespace`, `command`, `timeout=60` (max 600), `max_output_chars` only on v1.0.8+ (128-300,000, default 30,000) | `exit_code`, `stdout`, `stderr`; v1.0.8 adds `*_total_chars` and `*_truncated` |
+| `upload_file` | `sandbox_claim_name`, `namespace`, `path`, `content`, `binary=false`, `timeout=60` | Bytes written; base64 when `binary=true` |
+| `download_file` | `sandbox_claim_name`, `namespace`, `path`, `binary=false`, `timeout=60` | Content + bytes read |
+| `list_files` | `sandbox_claim_name`, `namespace`, `path`, `timeout=60`, `max_entries=1000` (max 10,000) | Entries (`name`, `size`, `type`, `mod_time`), `total_entries`, `truncated` |
+| `file_exists` | `sandbox_claim_name`, `namespace`, `path`, `timeout=60` | `exists`; a missing path is not an error |
+| `get_sandbox_status` | `sandbox_claim_name`, `namespace` | `SandboxReady` / `SandboxNotReady` / `SandboxNotFound`, `ready`, `message` |
+
+Resource: `sandboxes://{namespace}` lists sandboxes for the current MCP session.
+
+## Session scoping is the most important behavior
+
+Every tool, including `get_sandbox_status`, calls `get_sandbox()` ->
+`ensure_session_owns()`, which lists sandboxes with the label selector
+`<K8S_SANDBOX_SESSION_ID_LABEL_KEY>=<MCP session id>`. The resource uses the same
+selector. Consequences:
+
+- The server can only see/exec/delete claims **it created in the same MCP
+  session**. It cannot inspect or manage DSH platform claims created by the
+  gateway or `kubectl`, or claims from another session.
+- On a DSH MCP reconnect, the MCP session changes; earlier claims become
+  invisible to the tools. They keep running until `shutdown_after_seconds`
+  expires, or until you remove them by label with a confirmed `kubectl delete`.
+- A "Sandbox claim '<name>' is not found in namespace '<ns>'" error usually
+  means wrong namespace **or** the claim belongs to a different session.
+- Use `kubectl` for global inventory; use the MCP only for sandboxes it created
+  in this task.
+
+Session identity requires a session-providing transport. With stdio,
+`ctx.session_id` is `None` and creation fails. Connect DSH over
+`streamable-http`.
+
+## Runtime prerequisite
+
+The server talks to a sandbox runtime, not to arbitrary pods:
+
+- `gateway`, `direct`, `in-cluster`: runtime HTTP on `SERVER_PORT=8888`
+  (sandbox-router API or direct pod runtime).
+- `sandboxd-in-cluster` (v1.0.8+): sandboxd REST `8080`, gRPC `9090`.
+
+The shipped DSH template runs only DSH Web on `3080`, so no connection type can
+exec into it. A sandboxd **sidecar** executes commands in the sidecar's own
+container, not in the DSH container; shared volumes share files, not binaries or
+processes. To exec inside DSH, build a combined image (sandboxd injected into the
+DSH image) or use `kubectl exec` with explicit RBAC and confirmation. For
+untrusted code, deploy a separate runtime warm pool rather than modifying the
+DSH template.
+
+## Version differences
+
+| Area | Before v1.0.8 | v1.0.8+ |
+| --- | --- | --- |
+| Connection types | `gateway`, `direct`, `in-cluster` | Adds `sandboxd-in-cluster` |
+| `execute_command` output | Unbounded | Bounded by `max_output_chars`; four metadata fields |
+| Failed pod recovery | `Retain` only | `spec.failedPodPolicy: Recreate` |
+| Router install | `kubectl apply -f sandbox-router/deploy/` | `kubectl apply -k sandbox-router/deploy/`; projected token |
+
+Never pass `max_output_chars` to a pre-v1.0.8 server. On older servers, redirect
+verbose output to a file and `download_file` it, or pipe through `tail`/`head`.
+
+## Safety and cleanup
+
+- No auth: anyone reaching `:8000` gets every tool and the service account's
+  access. Keep it ClusterIP, authenticated, and namespace-scoped.
+- Treat commands as untrusted code: they can read files and environment
+  variables inside the sandbox, including provider keys in a combined image.
+- `delete_sandbox` cascades the claim, sandbox, and PVC: confirm the target and
+  namespace. Never delete a namespace or PVC as cleanup.
+- Clean up in the same session that created the sandbox. If the session is gone,
+  list claims by the session label and delete them explicitly (requires write
+  RBAC); otherwise rely on the shutdown timeout.
+
+## Troubleshooting
+
+| Symptom | Cause / fix |
+| --- | --- |
+| Tools missing | Row not enabled, wrong URL, connection failed; check logs and `/readyz` |
+| 404 on connect | URL is missing `/mcp` or points at the wrong port |
+| `ctx.session_id is None` | Connected over stdio; use streamable HTTP |
+| `Sandbox claim ... is not found` | Wrong namespace, or claim created by another MCP session |
+| Creation times out at ~60 s | MCP session alive but DSH cancelled the call; raise `toolCallTimeoutMs` |
+| `execute_command` connection error | No runtime on 8888/8080/9090, or wrong connection type; the DSH template is unsupported |
+| Output flood | Pre-v1.0.8 server; bound the command output yourself |
+| Empty sandbox list | The resource is session-scoped; use `kubectl` for global inventory |
+
+Deployment, connection matrix, RBAC, and the DSH row:
+[MCP deployment](mcp-deployment.md).

.dsh/skills/dsh-agent-sandbox-platform/references/platform-runbook.md

@@ -0,0 +1,181 @@
+# Platform runbook
+
+Scope: the resource layer and gateway in
+`examples/dsh-agents-as-a-service/`, one namespace, one DSH Web sandbox per
+user. Read the example README and `AGENTS.md` first. All commands are read-only
+unless a section is explicitly a change; confirm before changing anything.
+
+## 1. Context, version, CRDs
+
+```bash
+kubectl config current-context
+kubectl auth whoami
+kubectl config view --minify -o jsonpath='{..namespace}{"\n"}'
+kubectl get crd | grep -E 'agents\.x-k8s\.io'
+kubectl -n agent-sandbox-system get deploy agent-sandbox-controller \
+  -o jsonpath='{.spec.template.spec.containers[0].image}{"\n"}'
+```
+
+Compare the controller image tag with `AGENT_SANDBOX_VERSION` in
+`versions.env`. The example needs the extension CRDs plus core `sandboxes`;
+a missing CRD is a prerequisite failure, not an application bug.
+
+## 2. Resource model
+
+| Object | Role | Key fields |
+| --- | --- | --- |
+| `SandboxTemplate` | Blueprint; pinned image, probes, security context, PVC template | `envVarsInjectionPolicy`, `volumeClaimTemplatesPolicy`, `service`, `podTemplate` |
+| `SandboxWarmPool` | Pre-warmed spares from one template | `spec.replicas`, `sandboxTemplateRef` |
+| `SandboxClaim` | One tenant/user request; adopts a spare | `spec.warmPoolRef`, `additionalPodMetadata`, `status.sandbox.name` |
+| `Sandbox` | Adopted or directly created pod + Service + PVC | `spec.operatingMode`, `status.conditions`, `status.serviceFQDN`, `status.podIPs` |
+| `Pod` | The DSH Web process | `:3080`, PVC at `/home/node/.dsh` |
+| `PersistentVolumeClaim` | Per-sandbox state | `dsh-home-<sandbox>` |
+| `Service` | Stable per-sandbox DNS | `<sandbox>`, `status.serviceFQDN` |
+
+Delete a claim to cascade-delete its sandbox and PVC (account deletion). Never
+delete a PVC or namespace without an explicit, named confirmation.
+
+## 3. Read-only inspection
+
+```bash
+kubectl -n "$NS" get sandboxtemplates,sandboxwarmpools,sandboxclaims,sandboxes -o wide
+kubectl -n "$NS" get pods,pvc,svc -o wide
+kubectl -n "$NS" get events --sort-by=.lastTimestamp | tail -30
+kubectl -n "$NS" get sandboxclaim "$CLAIM" -o yaml
+kubectl -n "$NS" get sandbox "$SB" -o yaml
+```
+
+Bounded logs: `kubectl -n "$NS" logs "$POD" --tail=200` (add `--previous`
+only after a restart).
+
+## 4. Claim -> sandbox -> pod
+
+```bash
+SB=$(kubectl -n "$NS" get sandboxclaim "$CLAIM" -o jsonpath='{.status.sandbox.name}')
+POD=$(kubectl -n "$NS" get sandbox "$SB" -o jsonpath='{.metadata.annotations.agents\.x-k8s\.io/pod-name}')
+POD=${POD:-$SB}
+kubectl -n "$NS" get sandbox "$SB" -o jsonpath='{range .status.conditions[*]}{.type}={.status} {.reason}{"\n"}{end}'
+kubectl -n "$NS" get sandbox "$SB" -o jsonpath='{.spec.operatingMode}{" "}{.status.serviceFQDN}{" "}{.status.podIPs}{"\n"}'
+```
+
+Rules:
+
+- Resolve user -> sandbox only through `claim.status.sandbox.name`; the sandbox
+  keeps its pool-generated name, not the claim name.
+- A claim tracks binding; for runtime state read `Sandbox.spec.operatingMode`
+  and the `Suspended`/`Ready` conditions. A suspended sandbox is not serving
+  even when the claim still exists.
+- A missing `claim.status.sandbox.name` means the claim did not bind: inspect
+  the Ready condition `reason` and events. The pod is normally named after the
+  sandbox; use the annotation when present.
+
+## 5. Suspend, resume, wake
+
+Suspend keeps the PVC and Service, deletes the pod:
+
+```bash
+kubectl -n "$NS" patch sandbox "$SB" --type merge \
+  -p '{"spec":{"operatingMode":"Suspended"}}'
+kubectl -n "$NS" wait --for=delete "pod/$POD" --timeout=120s
+kubectl -n "$NS" get pvc "dsh-home-$SB"
+kubectl -n "$NS" get svc "$SB"
+```
+
+Resume and verify state:
+
+```bash
+kubectl -n "$NS" patch sandbox "$SB" --type merge \
+  -p '{"spec":{"operatingMode":"Running"}}'
+kubectl -n "$NS" wait sandbox "$SB" --for=condition=Ready --timeout=180s
+kubectl -n "$NS" exec "$SB" -- cat /home/node/.dsh/marker.txt
+```
+
+The gateway wakes a suspended sandbox on the first request. The idle sweeper
+only suspends claims it created (`aaas.example.com/managed-by=dsh-gateway`);
+hand-applied claims are never swept.
+
+## 6. Warm pool
+
+```bash
+kubectl -n "$NS" get sandboxwarmpool "$POOL" -o yaml
+kubectl -n "$NS" get sandboxes -l agents.x-k8s.io/warm-pool-sandbox -o wide
+kubectl -n "$NS" get sandboxwarmpool "$POOL" -o jsonpath='{.spec.replicas}{"\n"}'
+```
+
+Adopted sandboxes lose the warm-pool label; count current spares against
+`spec.replicas`. Zero spares or `spec.replicas: 0` means cold, slow signup.
+Scale only when asked:
+
+```bash
+kubectl -n "$NS" patch sandboxwarmpool "$POOL" --type merge -p '{"spec":{"replicas":2}}'
+```
+
+## 7. DSH runtime specifics
+
+- DSH Web listens on `3080` in-cluster. Port-forward to a free local port such
+  as `18081`, never `3080` if a local DSH already uses it.
+- The launch token is printed once as `dsh web: http://<ip>:3080/?token=...`.
+  Treat it as a credential: do not paste it into reports; hand the user the URL.
+- `/` returns `401` without the token. Probes must target `/favicon.svg`.
+- `DSH_TRUSTED_HOSTS` must include any public host that a proxy forwards; DSH
+  fences on `Host`/`Origin`.
+- State lives at `/home/node/.dsh`. DSH requires `.credentials.yaml` to be
+  `0600`; the template uses `fsGroupChangePolicy: OnRootMismatch`. If a resumed
+  sandbox crash-loops with a mode-660 error, suspend it, fix the file with a
+  throwaway pod, patch the policy, then resume.
+
+## 8. Gateway layer
+
+```bash
+kubectl -n "$NS" get deploy,svc,pods -l app=dsh-gateway -o wide
+kubectl -n "$NS" get endpoints dsh-gateway
+kubectl -n "$NS" logs deploy/dsh-gateway --tail=100
+```
+
+The gateway is a ClusterIP Service on `8080`; it proxies under `/u/{user}/` and
+derives state (`Provisioning`, `Waking`, `Ready`, `Suspending`, `Suspended`).
+It performs the DSH launch-token handshake server-side. With SSO enabled
+(`AUTH_PROXY_HEADER`), the Service must be reachable only through the
+authenticating proxy; never add a second path or port-forward it on a shared
+host. A resource-only install has no gateway: that is a warning, not a failure.
+
+## 9. Security boundaries
+
+- Provider keys (`dsh-provider-keys` plus the optional
+  `dsh-provider-keys-extra`) are shared by all sandboxes; the example is not
+  tenant-isolated.
+- gVisor, `nodeSelector`, the sandbox/exposure NetworkPolicies and extra
+  provider keys are opt-in, not active by default. A NetworkPolicy only helps
+  with a CNI that enforces it; see
+  [optional hardening](../../../../examples/dsh-agents-as-a-service/docs/optional-hardening.md).
+- Secret data, kubeconfigs, and pod logs are sensitive; RBAC may allow Secret
+  access, policy does not. Keep gateway RBAC namespace-scoped; it needs pod logs
+  to find the launch token.
+- TLS terminates outside the gateway; set `COOKIE_SECURE=true` for HTTPS.
+
+## 10. Failure matrix
+
+| Symptom | First evidence | Likely cause / fix |
+| --- | --- | --- |
+| Claim not Ready, no sandbox | Ready condition reason, events | Empty pool, image pull, quota, unschedulable |
+| `EnvVarsInjectionRejected` | claim Ready reason | Claim carries env/volume templates; template policy rejects it |
+| Pod Pending | `kubectl describe pod` | Requests/taints/affinity, unbound PVC |
+| CrashLoopBackOff | logs, `--previous` | Startup failure, bad config, probe 401, fsGroup mode 660 |
+| ImagePullBackOff | describe events | Wrong tag, private registry, missing pull secret |
+| DSH 401 in browser | gateway logs | Launch-token handshake failed; check gateway RBAC `pods/log` |
+| 502/503 through gateway | sandbox Ready, gateway logs | Wake timeout, DNS stale, token not in logs yet |
+| Warm pool empty | sandboxes label count | Scale the pool or wait for replenishment |
+| Suspended but expected running | `operatingMode` | Resume it; the gateway only wakes on a request |
+| WS closes `1011` | gateway logs | DSH rejected the upstream Host/authority; check trusted hosts |
+
+## 11. Cleanup and reporting
+
+Delete only claims/sandboxes you created, by name:
+
+```bash
+kubectl -n "$NS" delete sandboxclaim "$CLAIM" --dry-run=server
+kubectl -n "$NS" delete sandboxclaim "$CLAIM"
+```
+
+Report context/namespace, evidence, conclusion, change, rollback, and what was
+deleted. Leave the namespace, pools, templates, and unrelated claims alone.

.dsh/skills/dsh-agent-sandbox-platform/references/troubleshooting.md

@@ -0,0 +1,71 @@
+# Troubleshooting
+
+Start with evidence, not fixes: resolve context/namespace, read conditions and
+events, then compare desired vs observed state. Keep output bounded. Never
+"fix" an access error by broadening credentials.
+
+## Platform
+
+| Symptom | First evidence | Likely cause / fix |
+| --- | --- | --- |
+| `Forbidden` on every call | `kubectl auth whoami`, `kubectl auth can-i --list -n <ns>` | Wrong context or RBAC. Do not retry with broader credentials; ask for the right kubeconfig. |
+| CRDs not found | `kubectl get crd | grep agents.x-k8s.io` | agent-sandbox extensions not installed. Install the pinned release YAML; that is a prerequisite, not a code change. |
+| Claim created, no sandbox | `claim.status.conditions[?(@.type=="Ready")]`, events | Empty pool, image pull, quota, unschedulable; or policy rejection. |
+| Claim rejected | Ready reason `EnvVarsInjectionRejected` | Claim carries `env`/`volumeClaimTemplates` while the template disallows injection. Remove them; do not bypass the pool. |
+| User is suspended but the claim exists | `Sandbox.spec.operatingMode`, `Suspended` condition | Resume with `operatingMode: Running`; a gateway request would wake it. |
+| Warm pool exhausted | `kubectl get sandboxes -l agents.x-k8s.io/warm-pool-sandbox` | Scale `spec.replicas` (with confirmation) or accept slow cold provisioning. |
+| Pod `Pending` | `kubectl describe pod` | Requests/limits, taints, affinity, unbound PVC, storage class. |
+| `ImagePullBackOff` | describe events | Wrong image/tag, private GHCR package, missing pull secret; on kind, load the image under the exact manifest ref. |
+| `CrashLoopBackOff`, probe 401 | logs, `describe` | Probe path is `/`; use `/favicon.svg`. |
+| Restart with mode-660 error | logs mention `.credentials.yaml` | kubelet fsGroup widened the file; suspend, `chmod 600` from a throwaway pod, patch `fsGroupChangePolicy: OnRootMismatch`, resume. |
+| PVC `Pending` | `kubectl describe pvc`, StorageClass | No default provisioner, access mode, zone binding. |
+| Launch token not found | `kubectl logs <pod> --tail=2000 | grep 'dsh web:'` | Pod not ready yet, or logs rotated. Do not guess tokens; wait for readiness. |
+| Hand-applied sandbox disappeared | claim annotations, gateway logs | Idle sweeper only manages claims with `aaas.example.com/managed-by=dsh-gateway`; if it was managed, recreate/resume. |
+| Gateway 401 | gateway logs, cookie flags | Missing/expired cookie, DSH handshake failed, or `COOKIE_SECURE=true` over HTTP. |
+| Gateway 502/503 | sandbox Ready, gateway logs | Wake timeout, stale DNS, token not yet in logs; check `WAKE_TIMEOUT` and RBAC `pods/log`. |
+| WebSocket closes 1011 | gateway logs, `Host`/Origin | DSH rejected the upstream authority; check `DSH_TRUSTED_HOSTS` and the gateway's pod-IP dial path. |
+| WebSocket closes 4401 | cookie, Origin | Missing gateway auth or cross-origin upgrade; send a matching `Origin`. |
+| SSO header ignored | gateway env | `AUTH_PROXY_HEADER` unset; setting it requires the proxy to be the only path to the ClusterIP Service. |
+| Someone is treated as another user | service paths | Trust-boundary violation: the gateway is directly reachable. Remove the extra path and disable SSO until fixed. |
+
+## Agent-sandbox MCP
+
+| Symptom | First evidence | Likely cause / fix |
+| --- | --- | --- |
+| No `mcp__*__create_sandbox` tools | tool list, DSH logs | Server not deployed or row not enabled. Use `kubectl`; connect only with approval. |
+| 404 on connect | curl `/mcp`, `/healthz` | Wrong path/port; MCP endpoint is `/mcp`, health is at the root. |
+| `/readyz` 503 | response body, server logs | API unreachable or namespace `K8S_SANDBOX_PROBE_NAMESPACE` not listable; fix RBAC/config. |
+| `ctx.session_id is None` | server error | Connected over stdio; use streamable HTTP. |
+| `Sandbox claim ... is not found` | server error, `kubectl get claim` | Wrong namespace, or the claim belongs to another MCP session. List with `kubectl`; use the MCP only for its own claims. |
+| Creation cancelled at ~60 s | MCP call log | DSH `toolCallTimeoutMs` is 60 s while creation waits up to 180 s; raise the timeout. |
+| `execute_command` connection error | server logs, template ports | No runtime on 8888/8080/9090. The DSH template only listens on 3080; use a runtime template or a combined image. |
+| Output truncated / flooded | tool result | Pre-v1.0.8 is unbounded; v1.0.8 bounds output. Redirect verbose output to a file and read/download it; never pass `max_output_chars` to an old server. |
+| Orphaned claims after reconnect | `kubectl get claims -l mcp.k8s-agent-sandbox/session-id` | MCP sessions are transient; wait for `shutdown_after_seconds` or delete by label with explicit confirmation. |
+| `Forbidden` from the MCP server | server logs | Its ServiceAccount lacks claim/sandbox verbs, or RBAC is in another namespace; fix the Role, not the kubeconfig. |
+| Sandbox expired | `get_sandbox_status` -> `SandboxNotFound` | `shutdown_after_seconds` elapsed; create a new sandbox and keep the task inside the budget. |
+
+## Repository checks and CI
+
+| Symptom | Cause / fix |
+| --- | --- |
+| `check-versions: stale version reference in docs: dsh-v...` | A copied release tag in a Markdown file. Refer to the identity in `versions.env`; run `make set-version` only for a real bump. |
+| `check-versions: hard-coded version outside versions.env` | A tag in `.github/workflows` or the Makefile; move it to `versions.env`. |
+| `check-examples` layout error | Missing `README.md`/`manifests/`, stray YAML at the example root, missing exposure README, non-executable script, or missing `examples/README.md` entry. |
+| Manifest dry-run fails in CI | Invalid YAML or CRD schema; parse locally and run `kubectl apply --dry-run=server` against the pinned CRDs. |
+| `shellcheck` failure | Quote expansions, use arrays for kubectl args, avoid unused variables; run shellcheck locally. |
+| Lychee link failure | A relative/absolute link does not resolve; the link checker runs offline on the listed docs. |
+| PR-title check failure | Use Conventional Commits: `feat(scope): ...`, `fix(scope): ...`, `docs(scope): ...`. |
+| Changelog conflict | Never edit `CHANGELOG.md`; it is generated from commits. |
+
+## Do not
+
+- Do not use `--force --grace-period=0` to clear a stuck resource before
+  understanding why it is stuck.
+- Do not delete namespaces, PVCs, PVs, CRDs, or cluster-scoped objects as a
+  cleanup shortcut.
+- Do not read Secret data, kubeconfigs, or node logs to "debug" a permission
+  problem, and do not paste pod logs containing the DSH launch token into a
+  report.
+- Do not expose the unauthenticated MCP server or enable `AUTH_PROXY_HEADER`
+  while another path to the gateway exists.
+- Do not retry a `Forbidden` with a stronger kubeconfig; fix the RBAC scope.

.dsh/skills/dsh-agent-sandbox-platform/scripts/platform-preflight.sh

@@ -0,0 +1,298 @@
+#!/usr/bin/env bash
+# Read-only preflight for the DSH agents-as-a-service platform.
+#
+# Checks the kubectl target, agent-sandbox CRDs/version, warm pools, claims,
+# sandboxes, gateway and (optionally) an agent-sandbox MCP server. It never
+# mutates the cluster, never reads Secret data, and never port-forwards.
+#
+# Usage:
+#   platform-preflight.sh [--context NAME] [--namespace NS] [--pool NAME]
+#                         [--template NAME] [--mcp-url URL] [--help]
+#
+# Exit codes: 0 = no failures, 1 = at least one failure, 2 = usage error.
+set -euo pipefail
+
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(git -C "$SCRIPT_DIR" rev-parse --show-toplevel 2>/dev/null || true)"
+
+CTX=""
+NS="${NAMESPACE:-dsh-demo}"
+POOL=""
+TEMPLATE=""
+MCP_URL=""
+
+PASS=0
+WARN=0
+FAIL=0
+
+usage() {
+  cat <<'EOF'
+Read-only preflight for the DSH agents-as-a-service platform.
+
+Options:
+  --context NAME    kubectl context (default: current context)
+  --namespace NS    namespace to inspect (default: $NAMESPACE or dsh-demo)
+  --pool NAME       check only this warm pool
+  --template NAME   check only this SandboxTemplate
+  --mcp-url URL     also check an MCP server's /healthz and /readyz
+  --help            show this help
+
+The script makes no changes and never reads Secret data.
+EOF
+}
+
+while [ "$#" -gt 0 ]; do
+  case "$1" in
+    --context) CTX="${2:-}"; shift 2 ;;
+    --namespace) NS="${2:-}"; shift 2 ;;
+    --pool) POOL="${2:-}"; shift 2 ;;
+    --template) TEMPLATE="${2:-}"; shift 2 ;;
+    --mcp-url) MCP_URL="${2:-}"; shift 2 ;;
+    --help|-h) usage; exit 0 ;;
+    *) echo "unknown argument: $1" >&2; usage >&2; exit 2 ;;
+  esac
+done
+
+if [ -z "$NS" ]; then
+  echo "namespace must not be empty" >&2
+  exit 2
+fi
+
+section() { printf '\n== %s ==\n' "$1"; }
+pass() { PASS=$((PASS + 1)); printf 'PASS  %s\n' "$1"; }
+warn() { WARN=$((WARN + 1)); printf 'WARN  %s\n' "$1"; }
+fail() { FAIL=$((FAIL + 1)); printf 'FAIL  %s\n' "$1"; }
+info() { printf 'INFO  %s\n' "$1"; }
+
+command -v kubectl >/dev/null 2>&1 || {
+  echo "FAIL  kubectl is not installed" >&2
+  exit 1
+}
+
+if [ -n "$CTX" ]; then
+  if ! kubectl config get-contexts -o name 2>/dev/null | grep -Fxq "$CTX"; then
+    echo "FAIL  context '$CTX' is not in the kubeconfig" >&2
+    exit 1
+  fi
+  KUBECTL=(kubectl --context "$CTX" --request-timeout=15s)
+else
+  KUBECTL=(kubectl --request-timeout=15s)
+fi
+
+k() { "${KUBECTL[@]}" "$@"; }
+
+section "Target"
+if current="$(k config current-context 2>/dev/null)"; then
+  info "context: $current"
+  pass "kubeconfig is readable"
+else
+  fail "cannot read the current kubectl context"
+fi
+if user="$(k auth whoami -o jsonpath='{.status.userInfo.username}' 2>/dev/null)" && [ -n "$user" ]; then
+  info "identity: $user"
+else
+  fallback_user="$(k config view --minify -o jsonpath='{.users[0].name}' 2>/dev/null || true)"
+  info "identity: ${fallback_user:-unknown}"
+fi
+if k get namespace "$NS" -o name >/dev/null 2>&1; then
+  pass "namespace $NS exists"
+else
+  fail "namespace $NS is missing or not readable"
+fi
+
+if [ -n "$REPO_ROOT" ] && [ -f "$REPO_ROOT/versions.env" ]; then
+  # shellcheck source=/dev/null
+  . "$REPO_ROOT/versions.env"
+  info "expected agent-sandbox pin: ${AGENT_SANDBOX_VERSION:-unknown}"
+else
+  warn "versions.env not found; skipping the pin comparison"
+fi
+
+section "Capabilities (informational; never widen them)"
+for check in "create sandboxclaims" "delete sandboxclaims" "create pods/exec"; do
+  verb="${check%% *}"
+  resource="${check#* }"
+  if [ "$(k auth can-i "$verb" "$resource" -n "$NS" 2>/dev/null || echo unknown)" = "yes" ]; then
+    info "can $verb $resource in $NS: yes"
+  else
+    info "can $verb $resource in $NS: no"
+  fi
+done
+if [ "$(k auth can-i get secrets -n "$NS" 2>/dev/null || echo unknown)" = "yes" ]; then
+  warn "RBAC allows reading Secrets; policy still forbids printing Secret data"
+else
+  info "can get secrets in $NS: no"
+fi
+
+section "Agent Sandbox CRDs"
+for crd in \
+  sandboxtemplates.extensions.agents.x-k8s.io \
+  sandboxwarmpools.extensions.agents.x-k8s.io \
+  sandboxclaims.extensions.agents.x-k8s.io \
+  sandboxes.agents.x-k8s.io; do
+  if k get crd "$crd" -o name >/dev/null 2>&1; then
+    pass "CRD $crd"
+  else
+    fail "CRD $crd is missing or not readable"
+  fi
+done
+
+section "Controller"
+controller_ns="agent-sandbox-system"
+controller_image="$(k -n "$controller_ns" get deployment agent-sandbox-controller \
+  -o jsonpath='{.spec.template.spec.containers[0].image}' 2>/dev/null || true)"
+if [ -n "$controller_image" ]; then
+  info "controller image: $controller_image"
+  controller_tag="${controller_image##*:}"
+  if [ -n "${AGENT_SANDBOX_VERSION:-}" ] && [ "$controller_tag" != "$AGENT_SANDBOX_VERSION" ]; then
+    warn "controller tag '$controller_tag' differs from AGENT_SANDBOX_VERSION '$AGENT_SANDBOX_VERSION'"
+  else
+    pass "controller version matches versions.env"
+  fi
+else
+  warn "controller deployment not found in $controller_ns; cannot verify the installed version"
+fi
+
+section "Templates"
+templates="$(k -n "$NS" get sandboxtemplates \
+  -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}' 2>/dev/null || true)"
+if [ -z "$templates" ]; then
+  warn "no SandboxTemplates in $NS"
+fi
+if [ -n "$TEMPLATE" ] && ! printf '%s\n' "$templates" | grep -Fxq "$TEMPLATE"; then
+  fail "SandboxTemplate $TEMPLATE not found in $NS"
+fi
+for tpl in $templates; do
+  [ -n "$TEMPLATE" ] && [ "$tpl" != "$TEMPLATE" ] && continue
+  desc="$(k -n "$NS" get sandboxtemplate "$tpl" \
+    -o jsonpath='{range .spec.podTemplate.spec.containers[*]}{.name}{":"}{range .ports[*]}{.containerPort}{","}{end}{";"}{end}' \
+    2>/dev/null || true)"
+  info "template $tpl containers: ${desc:-<none>}"
+  case "$desc" in
+    *sandboxd*|*:8080,*|*:9090,*)
+      pass "template $tpl exposes a sandboxd runtime (MCP sandboxd-in-cluster)" ;;
+    *:8888,*)
+      pass "template $tpl exposes a runtime HTTP port (MCP gateway/direct/in-cluster)" ;;
+    *:3080,*)
+      warn "template $tpl is DSH Web only (:3080); MCP execute_command cannot run against it" ;;
+    *)
+      warn "template $tpl exposes no known sandbox runtime port" ;;
+  esac
+done
+
+section "Warm pools"
+pools="$(k -n "$NS" get sandboxwarmpools \
+  -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}' 2>/dev/null || true)"
+if [ -z "$pools" ]; then
+  warn "no SandboxWarmPools in $NS; claims will provision cold"
+fi
+if [ -n "$POOL" ] && ! printf '%s\n' "$pools" | grep -Fxq "$POOL"; then
+  fail "SandboxWarmPool $POOL not found in $NS"
+fi
+for pool in $pools; do
+  [ -n "$POOL" ] && [ "$pool" != "$POOL" ] && continue
+  replicas="$(k -n "$NS" get sandboxwarmpool "$pool" -o jsonpath='{.spec.replicas}' 2>/dev/null || true)"
+  selector="$(k -n "$NS" get sandboxwarmpool "$pool" -o jsonpath='{.status.selector}' 2>/dev/null || true)"
+  if [ -n "$selector" ]; then
+    ready="$(k -n "$NS" get sandboxes -l "$selector" \
+      -o jsonpath='{range .items[*]}{.status.conditions[?(@.type=="Ready")].status}{"\n"}{end}' \
+      2>/dev/null | grep -c '^True$' || true)"
+  else
+    ready="$(k -n "$NS" get sandboxes -l agents.x-k8s.io/warm-pool-sandbox \
+      -o jsonpath='{range .items[*]}{.status.conditions[?(@.type=="Ready")].status}{"\n"}{end}' \
+      2>/dev/null | grep -c '^True$' || true)"
+  fi
+  replicas="${replicas:-0}"
+  info "pool $pool: $ready/$replicas warm spares Ready"
+  if [ "$replicas" -eq 0 ]; then
+    warn "pool $pool has spec.replicas=0; signup will cold-provision"
+  elif [ "$ready" -lt "$replicas" ]; then
+    warn "pool $pool is below its desired spare count"
+  else
+    pass "pool $pool is at capacity"
+  fi
+done
+
+section "Claims"
+claims="$(k -n "$NS" get sandboxclaims \
+  -o jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.status.conditions[?(@.type=="Ready")].status}{"\t"}{.status.conditions[?(@.type=="Ready")].reason}{"\t"}{.status.sandbox.name}{"\n"}{end}' \
+  2>/dev/null || true)"
+if [ -z "$claims" ]; then
+  warn "no SandboxClaims in $NS"
+else
+  while IFS=$'\t' read -r name ready reason sandbox; do
+    [ -n "$name" ] || continue
+    if [ "$ready" != "True" ]; then
+      warn "claim $name is not Ready (status='${ready:-unknown}', reason='${reason:-unknown}')"
+    elif [ -z "$sandbox" ]; then
+      warn "claim $name is Ready but has no bound sandbox"
+    else
+      pass "claim $name -> sandbox $sandbox"
+    fi
+  done <<< "$claims"
+fi
+
+section "Sandboxes"
+sandboxes="$(k -n "$NS" get sandboxes \
+  -o jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.spec.operatingMode}{"\t"}{.status.conditions[?(@.type=="Ready")].status}{"\n"}{end}' \
+  2>/dev/null || true)"
+if [ -z "$sandboxes" ]; then
+  warn "no Sandboxes in $NS"
+else
+  while IFS=$'\t' read -r name mode ready; do
+    [ -n "$name" ] || continue
+    info "sandbox $name mode=${mode:-Running} ready=${ready:-unknown}"
+  done <<< "$sandboxes"
+fi
+
+section "Storage and Services"
+pvc_count="$(k -n "$NS" get pvc -o name 2>/dev/null | wc -l | tr -d ' ')"
+svc_count="$(k -n "$NS" get service -o name 2>/dev/null | wc -l | tr -d ' ')"
+info "persistent volume claims: ${pvc_count:-0}"
+info "services: ${svc_count:-0}"
+[ "${pvc_count:-0}" -gt 0 ] || warn "no PVCs in $NS"
+[ "${svc_count:-0}" -gt 0 ] || warn "no Services in $NS"
+
+section "Gateway"
+if k -n "$NS" get deployment dsh-gateway -o name >/dev/null 2>&1; then
+  pass "gateway deployment dsh-gateway exists"
+  if k -n "$NS" get service dsh-gateway -o name >/dev/null 2>&1; then
+    endpoints="$(k -n "$NS" get endpoints dsh-gateway \
+      -o jsonpath='{range .subsets[*].addresses[*]}{.ip}{" "}{end}' 2>/dev/null || true)"
+    if [ -n "$endpoints" ]; then
+      pass "gateway endpoints: $endpoints"
+    else
+      warn "gateway Service has no ready endpoints"
+    fi
+  else
+    warn "gateway Service dsh-gateway is missing"
+  fi
+else
+  warn "no dsh-gateway deployment; this is a resource-layer-only install"
+fi
+
+section "MCP server"
+if [ -n "$MCP_URL" ]; then
+  if ! command -v curl >/dev/null 2>&1; then
+    fail "curl is required for --mcp-url"
+  else
+    base="${MCP_URL%/}"
+    base="${base%/mcp}"
+    for endpoint in healthz readyz; do
+      body="$(curl -fsS --max-time 5 "$base/$endpoint" 2>/dev/null | head -c 300 || true)"
+      if [ -n "$body" ]; then
+        pass "MCP /$endpoint: $body"
+      else
+        fail "MCP /$endpoint is unreachable at $base/$endpoint"
+      fi
+    done
+  fi
+else
+  info "no --mcp-url supplied; skipping server health checks"
+fi
+
+printf '\n== Summary ==\nPASS=%d WARN=%d FAIL=%d\n' "$PASS" "$WARN" "$FAIL"
+if [ "$FAIL" -gt 0 ]; then
+  exit 1
+fi
+exit 0

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+
+[*.py]
+indent_size = 4
+
+[Makefile]
+indent_style = tab

.env.sample

@@ -1,29 +1,50 @@
 # Copy to .env and fill in. Never commit a real key.
+#
+# The version values below are documentation only: versions.env is the single
+# source of truth, and scripts/check-versions.sh fails if they drift.
 
-# --- DSH Web image (Dockerfile / build.sh) ---
+# --- Main DSH Web image (root Dockerfile) ---
 DEEPSEEK_API_KEY=
-DSH_VERSION=dsh-v0.2.1-rc.2
+# Optional additional provider keys consumed by DSH. For Docker, pass them with
+# -e; the Kubernetes examples inject them through the optional
+# dsh-provider-keys-extra Secret.
+OPENROUTER_API_KEY=
+GEMINI_API_KEY=
+NVIDIA_API_KEY=
+OPENAI_API_KEY=
+ANTHROPIC_API_KEY=
+GROQ_API_KEY=
+XAI_API_KEY=
+MISTRAL_API_KEY=
+TOGETHER_API_KEY=
+CEREBRAS_API_KEY=
+AI_GATEWAY_API_KEY=
+HF_TOKEN=
+DSH_VERSION=dsh-v0.2.1-rc.3
+RELEASE_REVISION=r4
 PNPM_VERSION=11.28.5
-# DSH Web port inside the container, and the local port published by
+# Container port, and the host port published by "make run".
-# build.sh / docker run. The gateway also uses it as the upstream port.
 DSH_PORT=3080
-# Comma/space separated extra Host allow-list entries for DSH (for an
+# Comma/space separated extra Host allow-list entries for DSH (for a proxy or
-# Ingress/public hostname). localhost and 127.0.0.1 are always trusted.
+# public hostname). localhost and 127.0.0.1 are always trusted.
 DSH_TRUSTED_HOSTS=
 
-# --- Gateway (examples/dsh-agents-as-a-service) ---
+# --- agents-as-a-service example ---
-GATEWAY_IMAGE=ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway
 NAMESPACE=dsh-demo
 POOL=dsh-pool
-# Seconds a sandbox may stay idle before the sweeper suspends it.
+# Seconds a sandbox may stay idle before the sweeper suspends it, and the max
-IDLE_TIMEOUT=60
+# time a proxied request waits for a suspended sandbox to become Ready.
-# Seconds a waking request may wait for the sandbox to become Ready.
+IDLE_TIMEOUT=360
-WAKE_TIMEOUT=120
+WAKE_TIMEOUT=240
 DSH_CONTAINER=dsh-web
 DSH_LOG_TAIL_LINES=2000
 COOKIE_NAME=dsh_gw_session
-# Set to true only behind HTTPS; secure cookies are not sent over plain HTTP.
+# Set to true only behind HTTPS; secure cookies are not sent over plain HTTP
+# (localhost counts as a secure context in browsers).
 COOKIE_SECURE=false
 COOKIE_MAX_AGE=604800
 MAX_BODY_MB=32
 HTTP_TIMEOUT=300
+# SSO is opt-in. Set this only when the gateway Service is reachable
+# exclusively through oauth2-proxy (see the example exposure docs).
+# AUTH_PROXY_HEADER=X-Forwarded-User

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,42 @@
+name: Bug report
+description: Report a reproducible problem with the image, an example or the tooling.
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Do not include API keys, tokens or other secrets. Report security
+        issues privately via SECURITY.md instead.
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What happened
+      description: The observed behavior and the expected behavior.
+    validations:
+      required: true
+  - type: textarea
+    id: reproduce
+    attributes:
+      label: Reproduction steps
+      description: Commands, manifests and versions. Redact secrets.
+      placeholder: |
+        make image
+        docker run ...
+    validations:
+      required: true
+  - type: input
+    id: image-tag
+    attributes:
+      label: Image or release
+      description: The pinned tag or digest, for example dsh-v0.2.1-rc.3-r4.
+  - type: input
+    id: cluster
+    attributes:
+      label: Environment
+      description: Kubernetes distribution/version, kind version, agent-sandbox version.
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant logs
+      description: Paste the smallest useful excerpt. Remove tokens and API keys.
+      render: shell

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Security vulnerability
+    url: https://github.com/sredevopsorg/deepseek-kubernetes-sandbox/security/advisories/new
+    about: Report security issues privately; do not open a public issue.
+  - name: Documentation
+    url: https://github.com/sredevopsorg/deepseek-kubernetes-sandbox/tree/main/docs
+    about: Read the repository docs before opening an issue.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,35 @@
+name: Feature request
+description: Propose a new example, image capability or workflow improvement.
+labels: ["enhancement"]
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem or use case
+      description: What are you trying to do, and what blocks you today?
+    validations:
+      required: true
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposed solution
+      description: Describe the shape you have in mind. For a new example, say which implementation it demonstrates.
+    validations:
+      required: true
+  - type: dropdown
+    id: area
+    attributes:
+      label: Area
+      options:
+        - Main DSH Web image
+        - Existing example
+        - New example
+        - CI / release automation
+        - Documentation
+        - Other
+    validations:
+      required: true
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives considered

.github/dependabot.yml

@@ -0,0 +1,36 @@
+version: 2
+
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    groups:
+      actions:
+        patterns: ["*"]
+    commit-message:
+      prefix: "chore: "
+
+  - package-ecosystem: pip
+    directory: /examples/dsh-agents-as-a-service/gateway
+    schedule:
+      interval: weekly
+    groups:
+      gateway-python:
+        patterns: ["*"]
+    commit-message:
+      prefix: "chore: "
+
+  - package-ecosystem: docker
+    directory: /
+    schedule:
+      interval: weekly
+    commit-message:
+      prefix: "chore: "
+
+  - package-ecosystem: docker
+    directory: /examples/dsh-agents-as-a-service/gateway
+    schedule:
+      interval: weekly
+    commit-message:
+      prefix: "chore: "

.github/pull_request_template.md

@@ -0,0 +1,31 @@
+## Summary
+
+<!-- What changes, and why? Link the issue: Closes #123 -->
+
+## Type of change
+
+- [ ] feat: new capability or example
+- [ ] fix: bug fix
+- [ ] docs: documentation only
+- [ ] refactor: no behavior change
+- [ ] build / ci: tooling, images, workflows
+- [ ] chore: maintenance
+
+## Breaking change
+
+- [ ] Yes, and the migration is documented in the description
+- [ ] No
+
+## Checklist
+
+- [ ] make check passes (versions, example layout, manifest YAML)
+- [ ] make test passes (gateway unit tests)
+- [ ] make lint passes (ruff, shellcheck; yamllint/actionlint where installed)
+- [ ] Docs updated for the change (root README, docs/, example README)
+- [ ] No secrets or usable credentials committed
+- [ ] CHANGELOG.md was not edited by hand (generated by git-cliff)
+- [ ] Version pins changed only through versions.env / make set-version
+
+## Testing
+
+<!-- Commands run, clusters used, results. Mention if kind e2e was skipped. -->

.github/workflows/_build-image.yaml

@@ -0,0 +1,160 @@
+# Reusable multi-arch image build: one workflow, called by build-main,
+# build-gateway and release. Builds natively per platform (no QEMU), pushes by
+# digest, then merges the manifest list with SBOM and provenance attestations.
+name: Reusable multi-arch image build
+
+on:
+  workflow_call:
+    inputs:
+      image:
+        description: Fully qualified image name without a tag
+        required: true
+        type: string
+      version:
+        description: Version recorded in the OCI labels
+        required: true
+        type: string
+      context:
+        description: Docker build context
+        required: true
+        type: string
+      dockerfile:
+        description: Dockerfile path, relative to the context
+        required: false
+        default: Dockerfile
+        type: string
+      build-args:
+        description: Newline-separated build args
+        required: false
+        default: ""
+        type: string
+      tags:
+        description: Newline-separated fully qualified tags to publish
+        required: true
+        type: string
+
+permissions:
+  contents: read
+  packages: write
+  id-token: write
+  attestations: write
+
+jobs:
+  build:
+    name: Build ${{ matrix.platform }}
+    runs-on: ${{ matrix.platform == 'linux/amd64' && 'ubuntu-latest' || 'ubuntu-24.04-arm' }}
+    timeout-minutes: 120
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - linux/amd64
+          - linux/arm64
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Prepare environment
+        env:
+          IMAGE: ${{ inputs.image }}
+        run: |
+          set -euo pipefail
+          pair=$(printf '%s' "${{ matrix.platform }}" | tr '/' '-')
+          echo "PLATFORM_PAIR=$pair" >> "$GITHUB_ENV"
+          echo "CACHE_SCOPE=$(printf '%s' "$IMAGE" | tr '/' '-')" >> "$GITHUB_ENV"
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push by digest
+        id: build
+        uses: docker/build-push-action@c3c9e263c25d99ce0380d002d59b67737d91b0dc # v7.4.0
+        with:
+          context: ${{ inputs.context }}
+          file: ${{ inputs.context }}/${{ inputs.dockerfile }}
+          platforms: ${{ matrix.platform }}
+          build-args: ${{ inputs.build-args }}
+          labels: |
+            org.opencontainers.image.source=https://github.com/${{ github.repository }}
+            org.opencontainers.image.version=${{ inputs.version }}
+            org.opencontainers.image.revision=${{ github.sha }}
+          outputs: type=image,name=${{ inputs.image }},push-by-digest=true,name-canonical=true,push=true,oci-mediatypes=true
+          sbom: true
+          provenance: mode=max
+          cache-from: type=gha,scope=${{ env.CACHE_SCOPE }}-${{ matrix.platform }}
+          cache-to: type=gha,mode=max,scope=${{ env.CACHE_SCOPE }}-${{ matrix.platform }}
+
+      - name: Export digest
+        run: |
+          set -euo pipefail
+          mkdir -p /tmp/digests
+          digest="${{ steps.build.outputs.digest }}"
+          touch "/tmp/digests/${digest#sha256:}"
+
+      - name: Upload digest
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
+        with:
+          name: digests-${{ env.PLATFORM_PAIR }}
+          path: /tmp/digests/*
+          if-no-files-found: error
+          retention-days: 1
+
+  merge:
+    name: Merge manifest list
+    needs: build
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - name: Download digests
+        uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
+        with:
+          path: /tmp/digests
+          pattern: digests-*
+          merge-multiple: true
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create and push manifest list
+        working-directory: /tmp/digests
+        env:
+          IMAGE: ${{ inputs.image }}
+          TAGS: ${{ inputs.tags }}
+        run: |
+          set -euo pipefail
+          args=()
+          while IFS= read -r tag; do
+            if [ -n "$tag" ]; then
+              args+=("-t" "$tag")
+            fi
+          done <<< "$TAGS"
+          refs=()
+          for digest in *; do
+            refs+=("$IMAGE@sha256:$digest")
+          done
+          docker buildx imagetools create "${args[@]}" "${refs[@]}"
+
+      - name: Inspect image
+        env:
+          IMAGE: ${{ inputs.image }}
+          TAGS: ${{ inputs.tags }}
+        run: |
+          set -euo pipefail
+          first=$(printf '%s\n' "$TAGS" | head -n1)
+          docker buildx imagetools inspect "$first"
+          echo "### Published ${{ inputs.image }}" >> "$GITHUB_STEP_SUMMARY"
+          printf '%s\n' "$TAGS" | sed 's/^/- /' >> "$GITHUB_STEP_SUMMARY"

.github/workflows/build-gateway.yaml

@@ -0,0 +1,70 @@
+# Development channel for the example gateway image: a merge that touches the
+# gateway publishes ghcr.io/<owner>/<repo>/dsh-agents-as-a-service/gateway:main.
+name: Build gateway image
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [main]
+    paths:
+      - examples/dsh-agents-as-a-service/gateway/**
+      - versions.env
+      - .github/workflows/build-gateway.yaml
+      - .github/workflows/_build-image.yaml
+
+permissions:
+  contents: read
+  packages: write
+  id-token: write
+  attestations: write
+
+concurrency:
+  group: build-gateway-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  meta:
+    name: Read versions
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    outputs:
+      identity: ${{ steps.meta.outputs.identity }}
+      gateway_image: ${{ steps.meta.outputs.gateway_image }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Read versions.env
+        id: meta
+        shell: bash
+        run: |
+          set -euo pipefail
+          set -a
+          # shellcheck disable=SC1091
+          source versions.env
+          set +a
+
+          identity="$DSH_VERSION"
+          [ -z "$RELEASE_REVISION" ] || identity="$DSH_VERSION-$RELEASE_REVISION"
+          {
+            echo "identity=$identity"
+            echo "gateway_image=$GATEWAY_IMAGE"
+          } >> "$GITHUB_OUTPUT"
+
+  build:
+    name: Build and push gateway image
+    needs: meta
+    uses: ./.github/workflows/_build-image.yaml
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+      attestations: write
+    with:
+      image: ${{ needs.meta.outputs.gateway_image }}
+      version: ${{ needs.meta.outputs.identity }}
+      context: examples/dsh-agents-as-a-service/gateway
+      dockerfile: Dockerfile
+      tags: |
+        ${{ needs.meta.outputs.gateway_image }}:main

.github/workflows/build-main.yaml

@@ -0,0 +1,84 @@
+# Development channel for the main DSH Web image: every merge to main that
+# touches the image definition publishes ghcr.io/<owner>/<repo>:main.
+# Releases are published by release.yaml with immutable version tags.
+name: Build main image
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [main]
+    paths:
+      - Dockerfile
+      - versions.env
+      - .github/workflows/build-main.yaml
+      - .github/workflows/_build-image.yaml
+
+permissions:
+  contents: read
+  packages: write
+  id-token: write
+  attestations: write
+
+concurrency:
+  group: build-main-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  meta:
+    name: Read versions
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    outputs:
+      identity: ${{ steps.meta.outputs.identity }}
+      dsh_version: ${{ steps.meta.outputs.dsh_version }}
+      pnpm_version: ${{ steps.meta.outputs.pnpm_version }}
+      release_revision: ${{ steps.meta.outputs.release_revision }}
+      ghcr_image: ${{ steps.meta.outputs.ghcr_image }}
+      gateway_image: ${{ steps.meta.outputs.gateway_image }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - name: Read versions.env
+        id: meta
+        shell: bash
+        run: |
+          set -euo pipefail
+          set -a
+          # shellcheck disable=SC1091
+          source versions.env
+          set +a
+          identity="$DSH_VERSION"
+          [ -z "$RELEASE_REVISION" ] || identity="$DSH_VERSION-$RELEASE_REVISION"
+          {
+            echo "identity=$identity"
+            echo "dsh_version=$DSH_VERSION"
+            echo "pnpm_version=$PNPM_VERSION"
+            echo "release_revision=$RELEASE_REVISION"
+            echo "ghcr_image=$GHCR_IMAGE"
+            echo "gateway_image=$GATEWAY_IMAGE"
+          } >> "$GITHUB_OUTPUT"
+
+  build:
+    name: Build and push main image
+    needs: meta
+    uses: ./.github/workflows/_build-image.yaml
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+      attestations: write
+    with:
+      image: ${{ needs.meta.outputs.ghcr_image }}
+      version: ${{ needs.meta.outputs.identity }}
+      context: .
+      dockerfile: Dockerfile
+      build-args: |
+        DSH_VERSION=${{ needs.meta.outputs.dsh_version }}
+        RELEASE_REVISION=${{ needs.meta.outputs.release_revision }}
+        PNPM_VERSION=${{ needs.meta.outputs.pnpm_version }}
+        VCS_REF=${{ github.sha }}
+      tags: |
+        ${{ needs.meta.outputs.ghcr_image }}:main

.github/workflows/ci.yaml

@@ -0,0 +1,257 @@
+# Continuous integration: lint, unit tests, manifest dry-run, gateway image
+# smoke test and dependency review. Job names are the required branch-protection
+# checks documented in docs/gitflow.md.
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ci-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Set up Python
+        uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
+        with:
+          python-version: "3.12"
+      - name: Install Python linters
+        run: |
+          set -euo pipefail
+          python -m pip install --upgrade pip
+          pip install "yamllint==1.38.0" "pyyaml==6.0.3"
+      - name: Install actionlint
+        env:
+          ACTIONLINT_VERSION: v1.7.12
+        run: |
+          set -euo pipefail
+          version="${ACTIONLINT_VERSION#v}"
+          curl -fsSL -o /tmp/actionlint.tar.gz             "https://github.com/rhysd/actionlint/releases/download/$ACTIONLINT_VERSION/actionlint_${version}_linux_amd64.tar.gz"
+          tar -xzf /tmp/actionlint.tar.gz -C /tmp actionlint
+          install -m 0755 /tmp/actionlint /usr/local/bin/actionlint
+          actionlint -version
+      - name: Install hadolint
+        env:
+          HADOLINT_VERSION: v2.12.0
+        run: |
+          set -euo pipefail
+          curl -fsSL -o /tmp/hadolint             "https://github.com/hadolint/hadolint/releases/download/$HADOLINT_VERSION/hadolint-Linux-x86_64"
+          install -m 0755 /tmp/hadolint /usr/local/bin/hadolint
+          hadolint --version
+      - name: Repository checks
+        run: |
+          set -euo pipefail
+          ./scripts/check-versions.sh
+          ./scripts/check-examples.sh
+          python scripts/check-manifests.py
+      - name: Shellcheck
+        run: shellcheck -x build.sh scripts/*.sh examples/*/scripts/*.sh
+      - name: Actionlint
+        run: actionlint -color
+      - name: Yamllint
+        run: yamllint .
+      - name: Hadolint
+        run: |
+          set -euo pipefail
+          hadolint Dockerfile
+          hadolint examples/dsh-agents-as-a-service/gateway/Dockerfile
+      - name: Documentation links
+        uses: lycheeverse/lychee-action@e7477775783ea5526144ba13e8db5eec57747ce8 # v2
+        with:
+          args: >-
+            --offline --no-progress --verbose
+            ./README.md ./CONTRIBUTING.md ./SECURITY.md ./AGENTS.md ./docs ./examples
+
+  python:
+    name: python
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    defaults:
+      run:
+        working-directory: examples/dsh-agents-as-a-service/gateway
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Set up Python
+        uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
+        with:
+          python-version: "3.12"
+          cache: pip
+          cache-dependency-path: |
+            examples/dsh-agents-as-a-service/gateway/requirements.txt
+            examples/dsh-agents-as-a-service/gateway/requirements-dev.txt
+      - name: Install dependencies
+        run: |
+          set -euo pipefail
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt -r requirements-dev.txt
+      - name: Lint
+        run: |
+          set -euo pipefail
+          python -m ruff check .
+          python -m ruff format --check .
+      - name: Unit tests with coverage
+        run: >-
+          python -m pytest -q
+          --cov=. --cov-report=xml:coverage.xml --cov-report=term
+          --junitxml=junit.xml
+      - name: Coverage summary
+        run: |
+          set -euo pipefail
+          {
+            echo "### Gateway test coverage"
+            python -m coverage report
+          } >> "$GITHUB_STEP_SUMMARY"
+      - name: Upload test artefacts
+        if: always()
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
+        with:
+          name: gateway-test-results
+          path: |
+            examples/dsh-agents-as-a-service/gateway/junit.xml
+            examples/dsh-agents-as-a-service/gateway/coverage.xml
+          if-no-files-found: warn
+          retention-days: 7
+
+  manifests:
+    name: manifests
+    runs-on: ubuntu-latest
+    timeout-minutes: 25
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Create kind cluster
+        uses: helm/kind-action@1544676c07bb3570fcb70166beaa07c4528fd4aa # v1.15.1
+        with:
+          version: v0.33.0
+          cluster_name: dsh-ci
+      - name: Read versions.env
+        run: |
+          set -euo pipefail
+          while IFS= read -r line; do
+            case "$line" in ''|'#'*) continue ;; esac
+            echo "$line" >> "$GITHUB_ENV"
+          done < versions.env
+      - name: Install agent-sandbox and Gateway API CRDs
+        run: |
+          set -euo pipefail
+          kubectl apply -f "https://github.com/kubernetes-sigs/agent-sandbox/releases/download/$AGENT_SANDBOX_VERSION/sandbox-with-extensions.yaml"
+          kubectl wait --for=condition=Established crd/sandboxtemplates.extensions.agents.x-k8s.io --timeout=180s
+          kubectl wait --for=condition=Established crd/sandboxwarmpools.extensions.agents.x-k8s.io --timeout=180s
+          kubectl wait --for=condition=Established crd/sandboxclaims.extensions.agents.x-k8s.io --timeout=180s
+          kubectl wait --for=condition=Established crd/sandboxes.agents.x-k8s.io --timeout=180s
+          kubectl apply -f "https://github.com/kubernetes-sigs/gateway-api/releases/download/$GATEWAY_API_VERSION/standard-install.yaml"
+          kubectl wait --for=condition=Established crd/gateways.gateway.networking.k8s.io --timeout=180s
+          kubectl wait --for=condition=Established crd/httproutes.gateway.networking.k8s.io --timeout=180s
+      - name: Set up Python
+        uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
+        with:
+          python-version: "3.12"
+      - name: Install check dependencies
+        run: pip install "pyyaml==6.0.3"
+      - name: Validate manifest shape
+        run: python scripts/check-manifests.py
+      - name: Validate manifests (server dry-run)
+        run: |
+          set -euo pipefail
+          kubectl create namespace dsh-demo
+          shopt -s globstar nullglob
+          count=0
+          for file in examples/*/manifests/**/*.yaml; do
+            case "$file" in *.yaml.example) continue ;; esac
+            echo "== $file =="
+            kubectl apply --dry-run=server -f "$file"
+            count=$((count + 1))
+          done
+          if [ "$count" -eq 0 ]; then
+            echo "no manifests were validated" >&2
+            exit 1
+          fi
+          echo "validated $count manifests"
+
+  gateway-image:
+    name: gateway-image
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Build gateway image
+        run: docker build -t dsh-aaas-gateway:ci examples/dsh-agents-as-a-service/gateway/
+      - name: Smoke-test /healthz without a cluster
+        run: |
+          set -euo pipefail
+          cat > /tmp/kubeconfig <<'EOF'
+          apiVersion: v1
+          kind: Config
+          clusters:
+            - name: dummy
+              cluster:
+                server: https://127.0.0.1:6443
+                insecure-skip-tls-verify: true
+          contexts:
+            - name: dummy
+              context:
+                cluster: dummy
+                user: dummy
+          users:
+            - name: dummy
+              user: {}
+          current-context: dummy
+          EOF
+          docker run -d --name gateway-smoke \
+            -p 18080:8080 \
+            -e NAMESPACE=dsh-demo \
+            -e POOL=dsh-pool \
+            -e KUBECONFIG=/tmp/kubeconfig \
+            -v /tmp/kubeconfig:/tmp/kubeconfig:ro \
+            dsh-aaas-gateway:ci
+          trap 'docker logs gateway-smoke || true; docker rm -f gateway-smoke || true' EXIT
+          code=""
+          for _ in $(seq 1 30); do
+            code=$(curl -s -o /dev/null -w '%{http_code}' http://localhost:18080/healthz || true)
+            [ "$code" = "200" ] && break
+            sleep 1
+          done
+          if [ "$code" != "200" ]; then
+            echo "gateway /healthz returned '$code' instead of 200" >&2
+            exit 1
+          fi
+          echo "gateway image healthy: GET /healthz -> 200"
+
+  dependency-review:
+    name: dependency-review
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+      pull-requests: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Dependency review
+        uses: actions/dependency-review-action@a1d282b36b6f3519aa1f3fc636f609c47dddb294 # v4

.github/workflows/codeql.yml

@@ -57,7 +57,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v7
+      uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
     # Add any setup steps before running the `github/codeql-action/init` action.
     # This includes steps like installing compilers or runtimes (`actions/setup-node`
@@ -67,7 +67,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v4
+      uses: github/codeql-action/init@9b3254085494b55a0f7c4c2b3d2d52cc712ce370 # v4
       with:
         languages: ${{ matrix.language }}
         build-mode: ${{ matrix.build-mode }}
@@ -96,6 +96,6 @@ jobs:
         exit 1
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v4
+      uses: github/codeql-action/analyze@9b3254085494b55a0f7c4c2b3d2d52cc712ce370 # v4
       with:
         category: "/language:${{matrix.language}}"

.github/workflows/e2e-kind.yaml

@@ -0,0 +1,78 @@
+# Weekly end-to-end run of the agents-as-a-service example against a real kind
+# cluster with agent-sandbox installed. Scheduled (not PR-blocking) so upstream
+# controller churn does not block merges; also available on demand.
+name: E2E (kind)
+
+on:
+  schedule:
+    - cron: "0 6 * * 1"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: e2e-kind
+  cancel-in-progress: false
+
+jobs:
+  e2e:
+    name: Example walkthrough on kind
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Create kind cluster
+        uses: helm/kind-action@1544676c07bb3570fcb70166beaa07c4528fd4aa # v1.15.1
+        with:
+          version: v0.33.0
+          cluster_name: dsh-e2e
+      - name: Read versions.env
+        run: |
+          set -euo pipefail
+          while IFS= read -r line; do
+            case "$line" in ''|'#'*) continue ;; esac
+            echo "$line" >> "$GITHUB_ENV"
+          done < versions.env
+      - name: Install agent-sandbox
+        run: |
+          set -euo pipefail
+          kubectl apply -f "https://github.com/kubernetes-sigs/agent-sandbox/releases/download/$AGENT_SANDBOX_VERSION/sandbox-with-extensions.yaml"
+          kubectl -n agent-sandbox-system rollout status deployment --timeout=180s
+          kubectl wait --for=condition=Established crd/sandboxtemplates.extensions.agents.x-k8s.io --timeout=180s
+          kubectl wait --for=condition=Established crd/sandboxwarmpools.extensions.agents.x-k8s.io --timeout=180s
+          kubectl wait --for=condition=Established crd/sandboxclaims.extensions.agents.x-k8s.io --timeout=180s
+          kubectl wait --for=condition=Established crd/sandboxes.agents.x-k8s.io --timeout=180s
+      - name: Set up Python (WebSocket checks)
+        uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
+        with:
+          python-version: "3.12"
+      - name: Install WebSocket client
+        run: pip install "websockets==17.3"
+      - name: Run the example walkthrough
+        env:
+          KIND_CLUSTER: dsh-e2e
+        run: examples/dsh-agents-as-a-service/scripts/e2e-kind.sh
+      - name: Collect cluster state
+        if: always()
+        run: |
+          set -euo pipefail
+          {
+            echo "== resources =="
+            kubectl get all,pvc -n dsh-demo -o wide 2>&1 || true
+            echo "== events =="
+            kubectl get events -n dsh-demo --sort-by=.lastTimestamp 2>&1 || true
+            echo "== gateway logs =="
+            kubectl -n dsh-demo logs deploy/dsh-gateway --tail=200 2>&1 || true
+          } > /tmp/e2e-cluster.txt
+      - name: Upload cluster state
+        if: always()
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
+        with:
+          name: e2e-cluster-state
+          path: /tmp/e2e-cluster.txt
+          if-no-files-found: warn
+          retention-days: 7

.github/workflows/multi-build-gateway.yaml

@@ -1,277 +0,0 @@
-# This workflow builds the multi-arch gateway image (Starlette ASGI, served by
-# uvicorn on :8080) and pushes it to GHCR as
-# ghcr.io/<owner>/<repo>:gateway. The DSH Web image is built by multi-build.yaml.
-# It uses Docker Buildx with native AMD64 and ARM64 runners, without QEMU.
-name: Gateway Build multi arch Docker Image with separate Github Runners
-
-on:
-  workflow_dispatch:
-  push:
-    branches:
-      - main
-    paths:
-      - 'examples/dsh-agents-as-a-service/gateway/**'
-      - '.github/workflows/multi-build-gateway.yaml'
-env:
-  # ghcr.io/<owner>/<repo>; this workflow always publishes the `:gateway` tag.
-  GHCR_IMAGE: ghcr.io/${{ github.repository }}
-permissions:
-  # Global permissions for the workflow, which can be overridden at the job level
-  contents: read
-
-concurrency:
-  # This concurrency group ensures that only one job in the group runs at a time.
-  # If a new job is triggered, the previous one will be canceled.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  # The build job builds the Docker image for each platform specified in the matrix.
-  build:
-    strategy:
-      fail-fast: false
-      matrix:
-        platform:
-          - linux/amd64
-          - linux/arm64
-      # The matrix includes two platforms: linux/amd64 and linux/arm64.
-      # The build job will run for each platform in the matrix.
-
-    permissions:
-      # Permissions for the build job, which can be overridden at the step level
-      # The permissions are set to allow the job to write to the GitHub Container Registry (GHCR) and read from the repository.
-      attestations: write
-      actions: read
-      checks: write
-      contents: write
-      deployments: none
-      id-token: write
-      issues: read
-      discussions: read
-      packages: write
-      pages: none
-      pull-requests: read
-      repository-projects: read
-      security-events: read
-      statuses: read
-
-    runs-on: ${{ matrix.platform == 'linux/amd64' && 'ubuntu-latest' || matrix.platform == 'linux/arm64' && 'ubuntu-24.04-arm' }}
-    # The job runs on different runners based on the platform.
-    # For linux/amd64, it runs on the latest Ubuntu runner.
-    # For linux/arm64, it runs on an Ubuntu 24.04 ARM runner.
-    # The runner is selected based on the platform specified in the matrix.
-
-    name: Build Docker image for ${{ matrix.platform }}
-
-    steps:
-      -
-        name: Prepare environment for current platform 
-        # This step sets up the environment for the current platform being built.
-        # It replaces the '/' character in the platform name with '-' and sets it as an environment variable.
-        # This is useful for naming artifacts and other resources that cannot contain '/'.
-        # The environment variable PLATFORMS_PAIR will be used later in the workflow.
-        id: prepare
-        run: |
-          platform=${{ matrix.platform }}
-          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
-
-      - name: Checkout
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-        # This step checks out the code from the repository.
-        # It uses the actions/checkout action to clone the repository into the runner's workspace.
-
-      - name: Docker meta default
-        # This step generates metadata for the Docker image.
-        # It uses the docker/metadata-action to create metadata based on the repository information.
-        # The metadata includes information such as the image name, tags, and labels.
-        # The metadata will be used later in the workflow to build and push the Docker image.
-        id: meta
-        uses: docker/metadata-action@dc802804100637a589fabce1cb79ff13a1411302 # v6.2.0
-        with:
-          images: ${{ env.GHCR_IMAGE }}
-          tags: |
-            type=raw,value=gateway
-
-
-      - name: Set up Docker Context for Buildx
-        # This step sets up a Docker context for Buildx.
-        # It creates a new context named "builders" that will be used for building the Docker image.
-        # The context allows Buildx to use the Docker daemon for building images.
-        id: buildx-context
-        run: |
-          docker context create builders
-
-      - name: Set up Docker Buildx
-        # This step sets up Docker Buildx, which is a Docker CLI plugin for extended build capabilities with BuildKit.
-        # It uses the docker/setup-buildx-action to configure Buildx with the specified context and platforms.
-        # The platforms are specified in the matrix and will be used for building the Docker image.
-        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
-        with:
-          endpoint: builders
-          platforms: ${{ matrix.platform }}
-
-      - name: Login to GitHub Container Registry
-        # This step logs in to the GitHub Container Registry (GHCR) using the docker/login-action.
-        # It uses the GitHub actor's username and the GITHUB_TOKEN secret for authentication.
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-
-      - name: Build and push by digest
-        # This step builds and pushes the Docker image using Buildx.
-        # It uses the docker/build-push-action to build the image with the specified context and platforms.
-        # The image is built with the labels and annotations generated in the previous steps.
-        # The outputs are configured to push the image by digest, which allows for better caching and versioning.
-        # The cache-from and cache-to options are used to enable caching for the build process.
-        # The cache is stored in GitHub Actions cache and is scoped to the repository, branch, and platform.
-        id: build
-        uses: docker/build-push-action@c3c9e263c25d99ce0380d002d59b67737d91b0dc # v7.4.0
-        env:
-          DOCKER_BUILDKIT: 1
-        with:
-          context: ./examples/dsh-agents-as-a-service/gateway/
-          platforms: ${{ matrix.platform }}
-          labels: ${{ steps.meta.outputs.labels }}
-          annotations: ${{ steps.meta.outputs.annotations }}
-          outputs: type=image,name=${{ env.GHCR_IMAGE }},push-by-digest=true,name-canonical=true,push=true,oci-mediatypes=true
-          cache-from: type=gha,scope=${{ github.repository }}-${{ github.ref_name }}-${{ matrix.platform }}
-          cache-to: type=gha,scope=${{ github.repository }}-${{ github.ref_name }}-${{ matrix.platform }}
-
-
-      - name: Export digest
-        # This step exports the digest of the built image to a file.
-        # It creates a directory in /tmp/digests and saves the digest of the image to a file.
-        # The digest is obtained from the output of the build step.
-        # The digest is used to uniquely identify the built image and can be used for further processing or verification.
-        run: |
-          mkdir -p /tmp/digests
-          digest="${{ steps.build.outputs.digest }}"
-          touch "/tmp/digests/${digest#sha256:}"
-
-      - name: Upload digest
-        # This step uploads the digest file to the GitHub Actions artifact storage.
-        # It uses the actions/upload-artifact action to upload the file created in the previous step.
-        # The artifact is named digests-${{ env.PLATFORM_PAIR }}, where PLATFORM_PAIR is the platform name with '/' replaced by '-'.
-        # The artifact is retained for 1 day, and if no files are found, it will throw an error.      
-        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
-        with:
-          name: digests-${{ env.PLATFORM_PAIR }}
-          path: /tmp/digests/*
-          if-no-files-found: error
-          retention-days: 1
-
-
-  merge:
-    # This job merges the Docker manifests for the different platforms built in the previous job.
-    name: Merge Docker manifests
-    runs-on: ubuntu-latest
-    permissions:
-      attestations: write
-      actions: read
-      checks: read
-      contents: read
-      deployments: none
-      id-token: write
-      issues: read
-      discussions: read
-      packages: write
-      pages: none
-      pull-requests: read
-      repository-projects: read
-      security-events: read
-      statuses: read
-
-    needs:
-      - build
-      # This job depends on the build job to complete before it starts.
-      # It ensures that the Docker images for all platforms are built before merging the manifests.
-    steps:
-      - name: Download digests
-        # This step downloads the digest files uploaded in the build job.
-        # It uses the actions/download-artifact action to download the artifacts with the pattern digests-*.
-        # The downloaded files are merged into the /tmp/digests directory.
-        uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
-        with:
-          path: /tmp/digests
-          pattern: digests-*
-          merge-multiple: true
-
-
-      - name: Docker meta
-        # This step generates metadata for the Docker image.
-        # It uses the docker/metadata-action to create metadata based on the repository information.
-        # The metadata includes information such as the image name, tags, and labels.
-        id: meta
-        uses: docker/metadata-action@dc802804100637a589fabce1cb79ff13a1411302 # v6.2.0
-        with:
-          images: ${{ env.GHCR_IMAGE }}
-          annotations: |
-            type=org.opencontainers.image.description,value=${{ github.event.repository.description || 'No description provided' }}
-          tags: |
-            type=raw,value=gateway
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
-        # This step sets up Docker Buildx, which is a Docker CLI plugin for extended build capabilities with BuildKit.
-        with:
-          driver-opts: |
-            network=host
-
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
-        # This step logs in to the GitHub Container Registry (GHCR) using the docker/login-action.
-        # It uses the GitHub actor's username and the GITHUB_TOKEN secret for authentication.
-        # The login is necessary to push the merged manifest list to GHCR.
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Get execution timestamp with RFC3339 format
-        # This step gets the current execution timestamp in RFC3339 format.
-        # It uses the date command to get the current UTC time and formats it as a string.
-        # The timestamp is used for annotating the Docker manifest list.
-        id: timestamp
-        run: |
-          echo "timestamp=$(date -u +"%Y-%m-%dT%H:%M:%SZ")" >> $GITHUB_OUTPUT
-
-      - name: Create manifest list and pushs
-        # This step creates a manifest list for the Docker images built for different platforms.
-        # It uses the docker buildx imagetools create command to create the manifest list.
-        # The manifest list is annotated with metadata such as description, creation timestamp, and source URL.
-        # The annotations are obtained from the metadata generated in the previous steps.
-        # The manifest list is pushed to the GitHub Container Registry (GHCR) with the specified tags.
-        working-directory: /tmp/digests
-        id: manifest-annotate
-        continue-on-error: true
-        run: |
-              docker buildx imagetools create \
-                $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
-                --annotation='index:org.opencontainers.image.description=${{ github.event.repository.description }}' \
-                --annotation='index:org.opencontainers.image.created=${{ steps.timestamp.outputs.timestamp }}' \
-                --annotation='index:org.opencontainers.image.url=${{ github.event.repository.url }}' \
-                --annotation='index:org.opencontainers.image.source=${{ github.event.repository.url }}' \
-                $(printf '${{ env.GHCR_IMAGE }}@sha256:%s ' *)
-
-
-      - name: Create manifest list and push without annotations
-        # This step creates a manifest list for the Docker images built for different platforms.
-        # It uses the docker buildx imagetools create command to create the manifest list.
-        # The manifest list is created without annotations if the previous step fails.
-        # The manifest list is pushed to the GitHub Container Registry (GHCR) with the specified tags.
-        if: steps.manifest-annotate.outcome == 'failure'
-        working-directory: /tmp/digests
-        run: |
-              docker buildx imagetools create  $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
-                $(printf '${{ env.GHCR_IMAGE }}@sha256:%s ' *)
-
-      - name: Inspect image
-        # This step inspects the created manifest list to verify its contents.
-        # It uses the docker buildx imagetools inspect command to display information about the manifest list.
-        # The inspection output will show the platforms and tags associated with the manifest list.
-        id: inspect
-        run: |
-          docker buildx imagetools inspect '${{ env.GHCR_IMAGE }}:${{ steps.meta.outputs.version }}'

.github/workflows/multi-build.yaml

@@ -1,295 +0,0 @@
-# This workflow builds a multi-arch Docker image using GitHub Actions and separated Github Runners with native support for ARM64 and AMD64 architectures, without using QEMU emulation.
-# It uses Docker Buildx to build and push the image to GitHub Container Registry (GHCR).
-name: Build multi arch Docker Image with separate Github Runners
-
-on:
-  workflow_dispatch:
-    inputs:
-      dsh_version:
-        description: "DSH git ref to build (tag or branch)"
-        required: true
-        default: dsh-v0.2.1-rc.2
-        type: string
-      pnpm_version:
-        description: "pnpm version used to build DSH"
-        required: true
-        default: "11.28.5"
-        type: string
-  push:
-    branches:
-      - main
-    paths:
-      - 'Dockerfile'
-      - '.github/workflows/multi-build.yaml'
-env:
-  # The name of the Docker image to be built and pushed to GHCR
-  # The image name is derived from the GitHub repository name and the GitHub Container Registry (GHCR) URL.
-  # The image name will be in the format: ghcr.io/<owner>/<repo>
-  GHCR_IMAGE: ghcr.io/${{ github.repository }}
-  # workflow_dispatch inputs win; pushes to main fall back to the pinned
-  # defaults. Both values flow into the Docker build args and the image tags.
-  DSH_VERSION: ${{ inputs.dsh_version || 'dsh-v0.2.1-rc.2' }}
-  PNPM_VERSION: ${{ inputs.pnpm_version || '11.28.5' }}
-permissions:
-  # Global permissions for the workflow, which can be overridden at the job level
-  contents: read
-
-concurrency:
-  # This concurrency group ensures that only one job in the group runs at a time.
-  # If a new job is triggered, the previous one will be canceled.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  # The build job builds the Docker image for each platform specified in the matrix.
-  build:
-    strategy:
-      fail-fast: false
-      matrix:
-        platform:
-          - linux/amd64
-          - linux/arm64
-      # The matrix includes two platforms: linux/amd64 and linux/arm64.
-      # The build job will run for each platform in the matrix.
-
-    permissions:
-      # Permissions for the build job, which can be overridden at the step level
-      # The permissions are set to allow the job to write to the GitHub Container Registry (GHCR) and read from the repository.
-      attestations: write
-      actions: read
-      checks: write
-      contents: write
-      deployments: none
-      id-token: write
-      issues: read
-      discussions: read
-      packages: write
-      pages: none
-      pull-requests: read
-      repository-projects: read
-      security-events: read
-      statuses: read
-
-    runs-on: ${{ matrix.platform == 'linux/amd64' && 'ubuntu-latest' || matrix.platform == 'linux/arm64' && 'ubuntu-24.04-arm' }}
-    # The job runs on different runners based on the platform.
-    # For linux/amd64, it runs on the latest Ubuntu runner.
-    # For linux/arm64, it runs on an Ubuntu 24.04 ARM runner.
-    # The runner is selected based on the platform specified in the matrix.
-
-    name: Build Docker image for ${{ matrix.platform }}
-
-    steps:
-      -
-        name: Prepare environment for current platform 
-        # This step sets up the environment for the current platform being built.
-        # It replaces the '/' character in the platform name with '-' and sets it as an environment variable.
-        # This is useful for naming artifacts and other resources that cannot contain '/'.
-        # The environment variable PLATFORMS_PAIR will be used later in the workflow.
-        id: prepare
-        run: |
-          platform=${{ matrix.platform }}
-          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
-
-      - name: Checkout
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-        # This step checks out the code from the repository.
-        # It uses the actions/checkout action to clone the repository into the runner's workspace.
-
-      - name: Docker meta default
-        # This step generates metadata for the Docker image.
-        # It uses the docker/metadata-action to create metadata based on the repository information.
-        # The metadata includes information such as the image name, tags, and labels.
-        # The metadata will be used later in the workflow to build and push the Docker image.
-        id: meta
-        uses: docker/metadata-action@dc802804100637a589fabce1cb79ff13a1411302 # v6.2.0
-        with:
-          images: ${{ env.GHCR_IMAGE }}
-
-
-      - name: Set up Docker Context for Buildx
-        # This step sets up a Docker context for Buildx.
-        # It creates a new context named "builders" that will be used for building the Docker image.
-        # The context allows Buildx to use the Docker daemon for building images.
-        id: buildx-context
-        run: |
-          docker context create builders
-
-      - name: Set up Docker Buildx
-        # This step sets up Docker Buildx, which is a Docker CLI plugin for extended build capabilities with BuildKit.
-        # It uses the docker/setup-buildx-action to configure Buildx with the specified context and platforms.
-        # The platforms are specified in the matrix and will be used for building the Docker image.
-        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
-        with:
-          endpoint: builders
-          platforms: ${{ matrix.platform }}
-
-      - name: Login to GitHub Container Registry
-        # This step logs in to the GitHub Container Registry (GHCR) using the docker/login-action.
-        # It uses the GitHub actor's username and the GITHUB_TOKEN secret for authentication.
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-
-      - name: Build and push by digest
-        # This step builds and pushes the Docker image using Buildx.
-        # It uses the docker/build-push-action to build the image with the specified context and platforms.
-        # The image is built with the labels and annotations generated in the previous steps.
-        # The outputs are configured to push the image by digest, which allows for better caching and versioning.
-        # The cache-from and cache-to options are used to enable caching for the build process.
-        # The cache is stored in GitHub Actions cache and is scoped to the repository, branch, and platform.
-        id: build
-        uses: docker/build-push-action@c3c9e263c25d99ce0380d002d59b67737d91b0dc # v7.4.0
-        env:
-          DOCKER_BUILDKIT: 1
-          DSH_PORT: 3080
-        with:
-          context: .
-          platforms: ${{ matrix.platform }}
-          labels: ${{ steps.meta.outputs.labels }}
-          build-args: |
-            DSH_VERSION=${{ env.DSH_VERSION }}
-            PNPM_VERSION=${{ env.PNPM_VERSION }}
-          annotations: ${{ steps.meta.outputs.annotations }}
-          outputs: type=image,name=${{ env.GHCR_IMAGE }},push-by-digest=true,name-canonical=true,push=true,oci-mediatypes=true
-          cache-from: type=gha,scope=${{ github.repository }}-${{ github.ref_name }}-${{ matrix.platform }}
-          cache-to: type=gha,scope=${{ github.repository }}-${{ github.ref_name }}-${{ matrix.platform }}
-
-
-      - name: Export digest
-        # This step exports the digest of the built image to a file.
-        # It creates a directory in /tmp/digests and saves the digest of the image to a file.
-        # The digest is obtained from the output of the build step.
-        # The digest is used to uniquely identify the built image and can be used for further processing or verification.
-        run: |
-          mkdir -p /tmp/digests
-          digest="${{ steps.build.outputs.digest }}"
-          touch "/tmp/digests/${digest#sha256:}"
-
-      - name: Upload digest
-        # This step uploads the digest file to the GitHub Actions artifact storage.
-        # It uses the actions/upload-artifact action to upload the file created in the previous step.
-        # The artifact is named digests-${{ env.PLATFORM_PAIR }}, where PLATFORM_PAIR is the platform name with '/' replaced by '-'.
-        # The artifact is retained for 1 day, and if no files are found, it will throw an error.      
-        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
-        with:
-          name: digests-${{ env.PLATFORM_PAIR }}
-          path: /tmp/digests/*
-          if-no-files-found: error
-          retention-days: 1
-
-
-  merge:
-    # This job merges the Docker manifests for the different platforms built in the previous job.
-    name: Merge Docker manifests
-    runs-on: ubuntu-latest
-    permissions:
-      attestations: write
-      actions: read
-      checks: read
-      contents: read
-      deployments: none
-      id-token: write
-      issues: read
-      discussions: read
-      packages: write
-      pages: none
-      pull-requests: read
-      repository-projects: read
-      security-events: read
-      statuses: read
-
-    needs:
-      - build
-      # This job depends on the build job to complete before it starts.
-      # It ensures that the Docker images for all platforms are built before merging the manifests.
-    steps:
-      - name: Download digests
-        # This step downloads the digest files uploaded in the build job.
-        # It uses the actions/download-artifact action to download the artifacts with the pattern digests-*.
-        # The downloaded files are merged into the /tmp/digests directory.
-        uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
-        with:
-          path: /tmp/digests
-          pattern: digests-*
-          merge-multiple: true
-
-
-      - name: Docker meta
-        # This step generates metadata for the Docker image.
-        # It uses the docker/metadata-action to create metadata based on the repository information.
-        # The metadata includes information such as the image name, tags, and labels.
-        id: meta
-        uses: docker/metadata-action@dc802804100637a589fabce1cb79ff13a1411302 # v6.2.0
-        with:
-          images: ${{ env.GHCR_IMAGE }}
-          annotations: |
-            type=org.opencontainers.image.description,value=${{ github.event.repository.description || 'No description provided' }}
-          tags: |
-            type=raw,value=main,enable=${{ github.ref_name == 'main' }}
-            type=raw,value=latest,enable=${{ github.ref_name == 'main' }}
-            type=raw,value=${{ env.DSH_VERSION }},enable=${{ github.ref_name == 'main' || github.event_name == 'workflow_dispatch' }}
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
-        # This step sets up Docker Buildx, which is a Docker CLI plugin for extended build capabilities with BuildKit.
-        with:
-          driver-opts: |
-            network=host
-
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
-        # This step logs in to the GitHub Container Registry (GHCR) using the docker/login-action.
-        # It uses the GitHub actor's username and the GITHUB_TOKEN secret for authentication.
-        # The login is necessary to push the merged manifest list to GHCR.
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Get execution timestamp with RFC3339 format
-        # This step gets the current execution timestamp in RFC3339 format.
-        # It uses the date command to get the current UTC time and formats it as a string.
-        # The timestamp is used for annotating the Docker manifest list.
-        id: timestamp
-        run: |
-          echo "timestamp=$(date -u +"%Y-%m-%dT%H:%M:%SZ")" >> $GITHUB_OUTPUT
-
-      - name: Create manifest list and pushs
-        # This step creates a manifest list for the Docker images built for different platforms.
-        # It uses the docker buildx imagetools create command to create the manifest list.
-        # The manifest list is annotated with metadata such as description, creation timestamp, and source URL.
-        # The annotations are obtained from the metadata generated in the previous steps.
-        # The manifest list is pushed to the GitHub Container Registry (GHCR) with the specified tags.
-        working-directory: /tmp/digests
-        id: manifest-annotate
-        continue-on-error: true
-        run: |
-              docker buildx imagetools create \
-                $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
-                --annotation='index:org.opencontainers.image.description=${{ github.event.repository.description }}' \
-                --annotation='index:org.opencontainers.image.created=${{ steps.timestamp.outputs.timestamp }}' \
-                --annotation='index:org.opencontainers.image.url=${{ github.event.repository.url }}' \
-                --annotation='index:org.opencontainers.image.source=${{ github.event.repository.url }}' \
-                $(printf '${{ env.GHCR_IMAGE }}@sha256:%s ' *)
-
-      - name: Create manifest list and push without annotations
-        # This step creates a manifest list for the Docker images built for different platforms.
-        # It uses the docker buildx imagetools create command to create the manifest list.
-        # The manifest list is created without annotations if the previous step fails.
-        # The manifest list is pushed to the GitHub Container Registry (GHCR) with the specified tags.
-        if: steps.manifest-annotate.outcome == 'failure'
-        working-directory: /tmp/digests
-        run: |
-              docker buildx imagetools create  $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
-                $(printf '${{ env.GHCR_IMAGE }}@sha256:%s ' *)
-
-      - name: Inspect image
-        # This step inspects the created manifest list to verify its contents.
-        # It uses the docker buildx imagetools inspect command to display information about the manifest list.
-        # The inspection output will show the platforms and tags associated with the manifest list.
-        id: inspect
-        run: |
-          docker buildx imagetools inspect '${{ env.GHCR_IMAGE }}:${{ steps.meta.outputs.version }}'

.github/workflows/pr-title.yaml

@@ -0,0 +1,38 @@
+# Enforce Conventional Commit pull request titles so git-cliff can group
+# release notes. The PR is squash-merged, so the title becomes the commit.
+name: PR title
+
+on:
+  pull_request:
+    types: [opened, edited, synchronize, reopened]
+
+permissions:
+  contents: read
+  pull-requests: read
+
+jobs:
+  lint:
+    name: pr-title
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - name: Validate title
+        uses: amannn/action-semantic-pull-request@48f256284bd46cdaab1048c3721360e808335d50 # v6.1.1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          types: |
+            feat
+            fix
+            docs
+            refactor
+            perf
+            test
+            build
+            ci
+            chore
+            revert
+          requireScope: false
+          subjectPattern: ^(?![A-Z]).+$
+          subjectPatternError: |
+            The PR title subject must start in lowercase and must not end with a period.

.github/workflows/release.yaml

@@ -0,0 +1,268 @@
+# Release pipeline. Pushing a tag that matches the identity in versions.env
+# publishes both images (version + latest), creates the GitHub Release from
+# git-cliff, and opens a PR that refreshes CHANGELOG.md on main.
+#
+# The tag must be dsh-vX.Y.Z or dsh-vX.Y.Z-rN and must match versions.env;
+# tags are immutable, so a broken release is fixed with a new -rN revision.
+name: Release
+
+on:
+  push:
+    tags:
+      - "dsh-v*"
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: Existing tag to release (must match versions.env)
+        required: true
+        type: string
+      publish_legacy_gateway_alias:
+        description: Also publish the legacy :gateway alias (one release only)
+        required: false
+        default: true
+        type: boolean
+
+permissions:
+  contents: write
+  packages: write
+  id-token: write
+  attestations: write
+
+concurrency:
+  group: release-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  meta:
+    name: Validate release identity
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    outputs:
+      identity: ${{ steps.meta.outputs.identity }}
+      dsh_version: ${{ steps.meta.outputs.dsh_version }}
+      pnpm_version: ${{ steps.meta.outputs.pnpm_version }}
+      release_revision: ${{ steps.meta.outputs.release_revision }}
+      ghcr_image: ${{ steps.meta.outputs.ghcr_image }}
+      gateway_image: ${{ steps.meta.outputs.gateway_image }}
+      tag: ${{ steps.meta.outputs.tag }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+
+      - name: Validate tag against versions.env
+        id: meta
+        shell: bash
+        run: |
+          set -euo pipefail
+          set -a
+          # shellcheck disable=SC1091
+          source versions.env
+          set +a
+          tag="${{ inputs.tag || github.ref_name }}"
+          identity="$DSH_VERSION"
+          [ -z "$RELEASE_REVISION" ] || identity="$DSH_VERSION-$RELEASE_REVISION"
+          if [ "$tag" != "$identity" ]; then
+            echo "tag '$tag' does not match versions.env identity '$identity'" >&2
+            exit 1
+          fi
+          if git rev-parse -q --verify "refs/tags/$tag" >/dev/null; then
+            git fetch origin main '+refs/heads/release/*:refs/remotes/origin/release/*'
+            commit=$(git rev-list -n1 "refs/tags/$tag")
+            allowed=0
+            for ref in origin/main origin/release/*; do
+              if git rev-parse -q --verify "$ref" >/dev/null && git merge-base --is-ancestor "$commit" "$ref"; then
+                allowed=1
+                break
+              fi
+            done
+            if [ "$allowed" -ne 1 ]; then
+              echo "tag commit $commit is not on main or a release branch" >&2
+              exit 1
+            fi
+          else
+            echo "tag '$tag' does not exist in this repository" >&2
+            exit 1
+          fi
+          if ! git ls-remote --tags --exit-code "$DSH_REPO" "$DSH_VERSION" >/dev/null; then
+            echo "upstream ref '$DSH_VERSION' not found in $DSH_REPO" >&2
+            exit 1
+          fi
+          {
+            echo "identity=$identity"
+            echo "dsh_version=$DSH_VERSION"
+            echo "pnpm_version=$PNPM_VERSION"
+            echo "release_revision=$RELEASE_REVISION"
+            echo "ghcr_image=$GHCR_IMAGE"
+            echo "gateway_image=$GATEWAY_IMAGE"
+            echo "tag=$tag"
+          } >> "$GITHUB_OUTPUT"
+
+      - name: Verify repository pins
+        run: ./scripts/check-versions.sh
+
+  tests:
+    name: Unit tests and lint
+    needs: meta
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    defaults:
+      run:
+        working-directory: examples/dsh-agents-as-a-service/gateway
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Set up Python
+        uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
+        with:
+          python-version: "3.12"
+          cache: pip
+          cache-dependency-path: |
+            examples/dsh-agents-as-a-service/gateway/requirements.txt
+            examples/dsh-agents-as-a-service/gateway/requirements-dev.txt
+      - name: Install dependencies
+        run: |
+          set -euo pipefail
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt -r requirements-dev.txt
+      - name: Lint
+        run: |
+          set -euo pipefail
+          python -m ruff check .
+          python -m ruff format --check .
+      - name: Unit tests
+        run: python -m pytest -q
+
+  build-main:
+    name: Publish main image
+    needs: [meta, tests]
+    uses: ./.github/workflows/_build-image.yaml
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+      attestations: write
+    with:
+      image: ${{ needs.meta.outputs.ghcr_image }}
+      version: ${{ needs.meta.outputs.identity }}
+      context: .
+      dockerfile: Dockerfile
+      build-args: |
+        DSH_VERSION=${{ needs.meta.outputs.dsh_version }}
+        RELEASE_REVISION=${{ needs.meta.outputs.release_revision }}
+        PNPM_VERSION=${{ needs.meta.outputs.pnpm_version }}
+        VCS_REF=${{ github.sha }}
+      tags: |
+        ${{ needs.meta.outputs.ghcr_image }}:${{ needs.meta.outputs.identity }}
+        ${{ needs.meta.outputs.ghcr_image }}:latest
+
+  build-gateway:
+    name: Publish gateway image
+    needs: [meta, tests]
+    uses: ./.github/workflows/_build-image.yaml
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+      attestations: write
+    with:
+      image: ${{ needs.meta.outputs.gateway_image }}
+      version: ${{ needs.meta.outputs.identity }}
+      context: examples/dsh-agents-as-a-service/gateway
+      dockerfile: Dockerfile
+      tags: |
+        ${{ needs.meta.outputs.gateway_image }}:${{ needs.meta.outputs.identity }}
+        ${{ needs.meta.outputs.gateway_image }}:latest
+
+  legacy-gateway-alias:
+    name: Publish legacy :gateway alias (temporary)
+    needs: [meta, build-gateway]
+    if: github.event_name != 'workflow_dispatch' || inputs.publish_legacy_gateway_alias
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Retag gateway as the legacy package tag
+        env:
+          SOURCE: ${{ needs.meta.outputs.gateway_image }}:${{ needs.meta.outputs.identity }}
+          LEGACY: ${{ needs.meta.outputs.ghcr_image }}:gateway
+        run: |
+          set -euo pipefail
+          docker buildx imagetools create -t "$LEGACY" "$SOURCE"
+          echo "Deprecated alias $LEGACY now points at $SOURCE" >> "$GITHUB_STEP_SUMMARY"
+
+  publish-release:
+    name: Changelog and GitHub Release
+    needs: [meta, build-main, build-gateway]
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          fetch-depth: 0
+
+      - name: Install git-cliff
+        env:
+          GIT_CLIFF_VERSION: v2.14.2
+        run: |
+          set -euo pipefail
+          version="${GIT_CLIFF_VERSION#v}"
+          curl -fsSL -o /tmp/git-cliff.tar.gz             "https://github.com/orhun/git-cliff/releases/download/$GIT_CLIFF_VERSION/git-cliff-$version-x86_64-unknown-linux-gnu.tar.gz"
+          tar -xzf /tmp/git-cliff.tar.gz -C /tmp
+          install -m 0755 "/tmp/git-cliff-$version/git-cliff" /usr/local/bin/git-cliff
+          git-cliff --version
+
+      - name: Generate CHANGELOG and release notes
+        env:
+          IDENTITY: ${{ needs.meta.outputs.identity }}
+        run: |
+          set -euo pipefail
+          git-cliff --tag "$IDENTITY" --output CHANGELOG.md
+          git-cliff --tag "$IDENTITY" --latest --strip header --output /tmp/release-notes.md
+          echo "### Release $IDENTITY" >> "$GITHUB_STEP_SUMMARY"
+          head -n 40 /tmp/release-notes.md >> "$GITHUB_STEP_SUMMARY"
+
+      - name: Create GitHub Release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          IDENTITY: ${{ needs.meta.outputs.identity }}
+        run: |
+          set -euo pipefail
+          if gh release view "$IDENTITY" >/dev/null 2>&1; then
+            echo "release $IDENTITY already exists; skipping" >&2
+          else
+            gh release create "$IDENTITY"               --title "$IDENTITY"               --notes-file /tmp/release-notes.md               --verify-tag
+          fi
+
+      - name: Open CHANGELOG pull request
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          IDENTITY: ${{ needs.meta.outputs.identity }}
+        run: |
+          set -euo pipefail
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          if git diff --quiet -- CHANGELOG.md; then
+            echo "CHANGELOG.md already up to date"
+            exit 0
+          fi
+          branch="chore/changelog-$IDENTITY"
+          git switch -c "$branch"
+          git add CHANGELOG.md
+          git commit -m "chore(changelog): refresh for $IDENTITY"
+          git push origin "$branch"
+          gh pr create \
+            --base main \
+            --head "$branch" \
+            --title "chore(changelog): refresh for $IDENTITY" \
+            --body "Generated by git-cliff for $IDENTITY. Do not edit CHANGELOG.md by hand."

.github/workflows/validate.yaml

@@ -1,137 +0,0 @@
-name: Validate
-
-# Validates the Kubernetes manifests against the real agent-sandbox CRD
-# schema (server-side dry-run on a throwaway kind cluster), runs the gateway
-# unit tests + lint, and builds/smoke-tests the gateway image without a
-# cluster. Runs on every PR and on pushes to main.
-on:
-  pull_request:
-  push:
-    branches: [main]
-
-permissions:
-  contents: read
-
-jobs:
-  validate-manifests:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-
-      - name: Create kind cluster
-        uses: helm/kind-action@1544676c07bb3570fcb70166beaa07c4528fd4aa # v1.15.1
-        with:
-          version: v0.33.0
-          cluster_name: dsh-validate
-
-      - name: Install agent-sandbox (extensions)
-        run: |
-          VERSION=v1.0.7
-          kubectl apply -f https://github.com/kubernetes-sigs/agent-sandbox/releases/download/${VERSION}/sandbox-with-extensions.yaml
-          kubectl wait --for=condition=Established crd/sandboxtemplates.extensions.agents.x-k8s.io --timeout=180s
-          kubectl wait --for=condition=Established crd/sandboxwarmpools.extensions.agents.x-k8s.io --timeout=180s
-          kubectl wait --for=condition=Established crd/sandboxclaims.extensions.agents.x-k8s.io --timeout=180s
-          kubectl wait --for=condition=Established crd/sandboxes.agents.x-k8s.io --timeout=180s
-
-      - name: Validate manifests (server dry-run)
-        run: |
-          set -euo pipefail
-          kubectl create namespace dsh-demo
-          for f in examples/dsh-agents-as-a-service/*.yaml; do
-            echo "== $f =="
-            kubectl apply --dry-run=server -f "$f"
-          done
-          kubectl apply --dry-run=server -f deploy/k8s/sandbox-template.yaml
-          echo "all manifests validated"
-
-  gateway-tests:
-    # The gateway lives in examples/dsh-agents-as-a-service/gateway/. Its
-    # runtime pins and dev pins are kept separate so the image only ships
-    # requirements.txt while CI installs both files.
-    name: Gateway unit tests and lint
-    runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: examples/dsh-agents-as-a-service/gateway
-    steps:
-      - name: Checkout
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-
-      - name: Set up Python
-        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
-        with:
-          python-version: "3.12"
-          cache: pip
-          cache-dependency-path: |
-            examples/dsh-agents-as-a-service/gateway/requirements.txt
-            examples/dsh-agents-as-a-service/gateway/requirements-dev.txt
-
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements.txt -r requirements-dev.txt
-
-      - name: Lint (ruff)
-        run: python -m ruff check .
-
-      - name: Run gateway unit tests
-        run: python -m pytest -v
-
-  gateway-image:
-    # No cluster and no real credentials: the gateway must start and answer
-    # /healthz with a dummy kubeconfig, which catches broken imports, missing
-    # runtime deps, and an unresponsive ASGI entrypoint.
-    name: Build and smoke-test gateway image
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-
-      - name: Build gateway image
-        run: |
-          docker build \
-            -t dsh-aaas-gateway:ci \
-            examples/dsh-agents-as-a-service/gateway/
-
-      - name: Smoke-test /healthz without a cluster
-        run: |
-          set -euo pipefail
-          cat > /tmp/kubeconfig <<'EOF'
-          apiVersion: v1
-          kind: Config
-          clusters:
-            - name: dummy
-              cluster:
-                server: https://127.0.0.1:6443
-                insecure-skip-tls-verify: true
-          contexts:
-            - name: dummy
-              context:
-                cluster: dummy
-                user: dummy
-          users:
-            - name: dummy
-              user: {}
-          current-context: dummy
-          EOF
-          docker run -d --name gateway-smoke \
-            -p 18080:8080 \
-            -e NAMESPACE=dsh-demo \
-            -e POOL=dsh-pool \
-            -e KUBECONFIG=/tmp/kubeconfig \
-            -v /tmp/kubeconfig:/tmp/kubeconfig:ro \
-            dsh-aaas-gateway:ci
-          trap 'docker logs gateway-smoke || true; docker rm -f gateway-smoke || true' EXIT
-
-          code=""
-          for _ in $(seq 1 30); do
-            code=$(curl -s -o /dev/null -w '%{http_code}' http://localhost:18080/healthz || true)
-            [ "$code" = "200" ] && break
-            sleep 1
-          done
-          if [ "$code" != "200" ]; then
-            echo "gateway /healthz returned '$code' instead of 200" >&2
-            exit 1
-          fi
-          echo "gateway image healthy: GET /healthz -> 200"

.gitignore

@@ -159,3 +159,8 @@ __pycache__/
 htmlcov/
 .venv/
 venv/
+
+# Local repository tooling
+.uvcache/
+coverage.xml
+

.hadolint.yaml

@@ -0,0 +1,11 @@
+# Container lint policy. Base images are supplied as build args defaulting to
+# pinned tags, and the image is rebuilt on every DSH release, so unpinned
+# packages inside a pinned base image are intentional.
+failure-threshold: warning
+ignored:
+  - DL3008  # apt-get packages are intentionally not version-pinned
+  - DL3018  # apk packages are intentionally not version-pinned
+  - DL3006  # FROM uses build args (NODE_BUILD_IMAGE/NODE_RUNTIME_IMAGE) from versions.env
+  - DL3003  # the DSH packaging step deliberately cds inside a single layer
+  - DL3059  # consecutive RUN layers are kept for cache reuse and readability
+  - DL4006  # the upstream uv installer pipes curl to sh by design

.lychee.toml

@@ -0,0 +1,13 @@
+# Link checker for README/docs. Placeholders used by the examples are excluded
+# on purpose; real URLs must resolve.
+verbose = "info"
+no_progress = true
+max_retries = 2
+exclude = [
+  "localhost",
+  "127\\.0\\.0\\.1",
+  "example\\.com",
+  "your-github-org",
+  "mailto:",
+  "ghcr\\.io/.*@sha256",
+]

.yamllint.yml

@@ -0,0 +1,19 @@
+extends: default
+
+rules:
+  document-start: disable
+  line-length:
+    max: 200
+    level: error
+  truthy:
+    check-keys: false
+  comments-indentation: disable
+  comments:
+    min-spaces-from-content: 1
+
+ignore: |
+  .venv/
+  .uvcache/
+  node_modules/
+  # Upstream CodeQL boilerplate: long documentation comments, linted by actionlint.
+  .github/workflows/codeql.yml

AGENTS.md

@@ -0,0 +1,148 @@
+# AGENTS.md
+
+Guidance for AI coding agents (and humans) working in this repository. Read it
+before changing anything; it encodes the conventions the CI enforces.
+
+## What this repository is
+
+- **The root is the primary artifact.** The Dockerfile packages DeepSeek
+  Harness Web (dsh web) as a slim, non-root, multi-arch image. Everything else
+  exists to support it or to demonstrate an implementation on top of it.
+- **Every implementation is a self-contained example** under examples/<name>/.
+  There is exactly one example for the agents-as-a-service platform; do not
+  split it into parallel directories.
+- **versions.env is the single source of truth** for the DSH ref, pnpm, the
+  control-plane versions and the image names.
+- **Docs describe the shipped behavior**, not intentions. If you change a
+  manifest, port, env var or workflow, update the docs in the same change.
+- **CHANGELOG.md is generated** by git-cliff from Conventional Commits. Never
+  edit it by hand.
+
+## Golden rules
+
+1. Keep the Dockerfile working for both linux/amd64 and linux/arm64; it must
+   stay the first-class artifact.
+2. Never hard-code a version, image tag or registry path. Edit versions.env and
+   run make set-version when bumping.
+3. Never commit a real secret or usable credential. Secret-shaped YAML lives in
+   *.yaml.example files; keys are documented in .env.sample only.
+4. Every manifest under examples/*/manifests/ must parse and pass a server-side
+   dry-run in CI. Keep manifests numbered (NN-*.yaml), and keep exposure
+   variants under manifests/exposure/<variant>/ documented by the single
+   manifests/exposure/README.md (variants are mutually exclusive).
+5. Do not edit CHANGELOG.md, and do not move or delete published tags.
+   Releasing is documented in docs/versioning.md.
+6. Keep the gateway HTTP/WebSocket contract stable unless the change is
+   explicitly about it; clients and examples depend on it.
+
+## Repository map
+
+| Path | What lives there |
+| --- | --- |
+| Dockerfile | Main DSH Web image (build + runtime stages, entrypoint) |
+| versions.env | Every pinned version and image name |
+| Makefile | Canonical local entrypoint |
+| build.sh | Deprecated shim that forwards to make |
+| docs/ | main-image.md, examples.md, gitflow.md, versioning.md |
+| examples/ | One implementation per directory (contract in docs/examples.md) |
+| examples/dsh-agents-as-a-service/ | The multi-tenant platform example (manifests, gateway, docs, scripts) |
+| examples/minimal-single-tenant/ | The just-one-DSH-Web quickstart |
+| scripts/ | check-versions.sh, check-examples.sh, check-manifests.py, set-version.sh |
+| .dsh/skills/ | Project-local DSH skills (auto-discovered); dsh-agent-sandbox-platform covers platform operation, MCP limits and extension recipes |
+| .github/workflows/ | ci.yaml, reusable _build-image.yaml, build-*, release.yaml, e2e-kind.yaml, pr-title.yaml, codeql.yml |
+
+## Commands
+
+    make check        # versions, example layout and manifest YAML (run before every commit)
+    make test         # gateway unit tests (109+ tests)
+    make lint         # ruff + shellcheck (+ yamllint/actionlint when installed)
+    make image        # build the main DSH Web image (slow: clones and builds DSH)
+    make gateway      # build the example gateway image (fast)
+    make e2e          # full kind walkthrough; needs a cluster with agent-sandbox
+    make changelog    # regenerate CHANGELOG.md with git-cliff (release only)
+    make release-dry-run
+    make set-version DSH_VERSION=dsh-vX.Y.Z RELEASE_REVISION=rN
+
+No cluster is needed for check, test, lint, gateway or image. Only make e2e
+needs kind plus the agent-sandbox CRDs (see the example README).
+
+## Testing expectations per change
+
+| Change | Minimum verification |
+| --- | --- |
+| Documentation only | make check; verify relative links |
+| Example manifest | make check; kubectl apply --dry-run=server in CI |
+| Optional hardening (gVisor, nodeSelector, NetworkPolicy, provider keys) | make check; server dry-run in CI; manual verification on a capable cluster |
+| Gateway code | make test; make lint; add or update tests |
+| Dockerfile / versions.env | make check; make image (amd64) and a container smoke test |
+| Workflow | actionlint in CI; keep actions SHA-pinned; no hard-coded versions |
+| New example | make check; all files described in docs/examples.md |
+| Project skill (.dsh/skills/) | make check; frontmatter and size check; shellcheck skill scripts; load it with the skill tool |
+
+## Versioning and releases
+
+- Release identity = DSH_VERSION, optionally with a repository revision suffix
+  for re-releases at the same DSH ref (current identity:
+  dsh-v0.2.1-rc.3-r4).
+- The current identity is dsh-v0.2.1-rc.3-r4 (stored in versions.env). The
+  dsh-v0.2.1-rc.3 image tag already exists and tags are immutable, which is why
+  the first release under this scheme carries -r2.
+- Channels: release tags are immutable; latest follows the newest release;
+  main is the development channel for both image packages.
+- A broken release is fixed by publishing -r(N+1), never by re-tagging.
+- The full procedure, compatibility table and rollback rules are in
+  docs/versioning.md.
+
+## Branch and PR conventions
+
+- Trunk-based with release branches, documented in docs/gitflow.md.
+- Branch names: feat/, fix/, docs/, chore/, refactor/, test/.
+- Conventional Commit subjects and PR titles (feat(scope): ..., fix(scope): ...).
+- PRs are squash-merged; main stays linear and protected.
+- Required checks: lint, python, manifests, gateway-image, pr-title, CodeQL,
+  dependency-review.
+- Keep diffs scoped; update docs with the code; never mix a version bump with
+  unrelated changes.
+
+## Adding an example
+
+1. Read docs/examples.md and examples/README.md.
+2. Create examples/<name>/ with README.md, manifests/NN-*.yaml, optional
+   manifests/exposure/<variant>/ (plus README), optional components with their
+   own Dockerfile/README/tests, and scripts/ (executable, idempotent,
+   self-cleaning).
+3. Publish component images under <registry>/<owner>/<repo>/<example>/<component>.
+4. Add the example to examples/README.md; scripts/check-examples.sh enforces
+   the layout.
+
+## Security notes
+
+- AUTH_PROXY_HEADER is opt-in. Only enable it when the gateway Service is
+  reachable exclusively through the authenticating proxy; otherwise any client
+  can spoof X-Forwarded-User.
+- The example gateway reads the DSH launch token from pod logs. Treat pod logs
+  as sensitive and keep its RBAC namespace-scoped.
+- The example shares provider keys (dsh-provider-keys plus the optional
+  dsh-provider-keys-extra) across sandboxes; do not describe it as
+  tenant-isolated.
+- gVisor, nodeSelector and the NetworkPolicies are opt-in and are not active in
+  the base manifests; do not describe the base example as hardened.
+- TLS terminates outside the gateway; set COOKIE_SECURE=true for HTTPS and keep
+  the base manifest safe for local HTTP.
+
+## Ask before
+
+- Changing release workflows, tag formats or published image names.
+- Editing the gateway's public routes or auth semantics.
+- Adding a new top-level tool, service or dependency to the main image.
+- Rewriting generated files (CHANGELOG.md) or git history.
+
+## Where to look first
+
+- [docs/main-image.md](docs/main-image.md) - container contract and tags
+- [docs/examples.md](docs/examples.md) - example authoring rules
+- [docs/gitflow.md](docs/gitflow.md) - branches, PRs, required checks
+- [docs/versioning.md](docs/versioning.md) - versioning, changelog, releases
+- [.dsh/skills/dsh-agent-sandbox-platform/SKILL.md](.dsh/skills/dsh-agent-sandbox-platform/SKILL.md) - platform operations, MCP limits, extension recipes
+- [CONTRIBUTING.md](CONTRIBUTING.md) - development setup
+- [SECURITY.md](SECURITY.md) - vulnerability reporting and threat notes

CHANGELOG.md

@@ -0,0 +1,55 @@
+# Changelog
+
+All notable changes to this repository are documented here.
+Generated by git-cliff from Conventional Commits; do not edit this file by hand.
+
+## [dsh-v0.2.1-rc.3-r3] - 2026-10-25
+
+### Added
+
+- **gateway-api:** Expose dsh-gateway externally via Traefik Gateway API (#12) (7d3faf0)
+- **gateway-api:** GitHub SSO via oauth2-proxy in front of dsh-gateway (#13) (3f46279)
+- **gateway:** SSO landing auto-connects and offers recreate sandbox (#15) (ed1398d)
+- **repo:** Repo reorganization (#16) (3b70f17)
+
+### Fixed
+
+- **Dockerfile:** Update runtime dependencies and enable corepack for pnpm (6d97f61)
+- **gateway-api:** Correct oauth2-proxy cookie-secret generation (#14) (73a65d9)
+
+### Maintenance
+
+- Bump the actions group across 1 directory with 3 updates (#17) (6a8fe54)
+
+### Other
+
+- Dockerfile extra tools (2b47afa)
+- Modify gateway.yaml for image policy and timeout values (53e55fc)
+- Add commit message prefix for Dependabot updates (6876871)
+- Versioning update (#18) (ecba8b9)
+- Refactor environment variable loading in build workflow (d627526)
+- Refactor environment variable loading in build-gateway.yaml (027f74f)
+- Refactor release workflow for environment variable sourcing (958cbe2)
+
+## [v0.0.1] - 2026-10-21
+
+### Other
+
+- Initial commit (f3d4312)
+- Update Dockerfile, README, and Kubernetes manifests for DSH Web deployment (#1) (0d66cba)
+- Add DeepSeek Harness Web agents-as-a-service platform pattern (#2) (98cb547)
+- Update action versions and cluster version (d9cb265)
+- Add Python to CodeQL workflow languages (b0f992f)
+- Add multi-arch Docker image build workflow with GitHub Actions (de11d34)
+- Add step to create manifest list for Docker images (c9be929)
+- Make DSH agents-as-a-service browser-usable; fix probe crash-loop (#3) (6301c21)
+- Fix idle sweeper suspending claims the gateway does not own (#4) (29eefd6)
+- Fix DSH crash-loop after suspend/resume (fsGroup chmod) (#5) (a8ef211)
+- Add a startup probe so slow DSH cold starts are not killed (#6) (c193ed2)
+- Normalise the pod model returned by CoreV1Api (#7) (9dea4a7)
+- Forward the upstream query byte-for-byte (#8) (6876406)
+- Do not read-time-out proxied upstream streams (#9) (163abae)
+- Dial the sandbox pod IP for WebSocket upgrades (#10) (abe5b4d)
+- Handshake under the pod-IP authority for WebSocket upgrades (#11) (0a61e57)
+
+

CODE_OF_CONDUCT.md

@@ -0,0 +1,46 @@
+# Code of Conduct
+
+This project adopts the Contributor Covenant, version 2.1:
+https://www.contributor-covenant.org/version/2/1/code_of_conduct/
+
+## Our standards
+
+We are committed to a welcoming, harassment-free experience for everyone,
+regardless of age, body size, visible or invisible disability, ethnicity, sex
+characteristics, gender identity and expression, level of experience,
+education, socio-economic status, nationality, personal appearance, race,
+religion, or sexual identity and orientation.
+
+Examples of behavior that contributes to a positive environment:
+
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologizing to those affected by our mistakes
+- Focusing on what is best for the community and the project
+
+Examples of unacceptable behavior:
+
+- Sexualized language or imagery, and sexual attention or advances
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement
+
+Maintainers are responsible for clarifying and enforcing these standards and
+may remove, edit, or reject comments, commits, code, issues, and other
+contributions that do not align with this Code of Conduct.
+
+Report abusive, harassing, or otherwise unacceptable behavior to the
+maintainers through a private GitHub Security Advisory or by contacting the
+repository owner on GitHub. All complaints will be reviewed and investigated
+promptly and fairly. Maintainers must respect the privacy and security of the
+reporter.
+
+## Attribution
+
+This Code of Conduct is adapted from the Contributor Covenant, version 2.1,
+available at https://www.contributor-covenant.org/version/2/1/code_of_conduct/

CONTRIBUTING.md

@@ -0,0 +1,88 @@
+# Contributing
+
+Thanks for improving deepseek-kubernetes-sandbox. This repository packages
+DeepSeek Harness Web as a container and ships self-contained implementation
+examples around it. The root is the container; every implementation lives
+under examples/.
+
+## Repository layout
+
+| Path | Purpose |
+| --- | --- |
+| Dockerfile | The primary artifact: the DSH Web image |
+| versions.env | Single source of truth for every pinned version |
+| Makefile | Canonical local entrypoint (build, test, lint, check, e2e) |
+| docs/ | Repository-wide docs: main image, example contract, gitflow, versioning |
+| examples/ | One self-contained implementation per directory |
+| scripts/ | Repository checks (versions, example layout, manifests, version bump) |
+| .github/ | CI, releases, dependency updates, templates |
+
+## Requirements
+
+- Docker (for image builds)
+- Python 3.12+ (gateway tests and repository checks)
+- make and git
+- kubectl and kind only for the end-to-end example
+
+## Local workflow
+
+    git switch -c feat/<short-slug>
+    make check          # versions, example layout, manifest YAML
+    make test           # gateway unit tests
+    make lint           # ruff, shellcheck (+ yamllint/actionlint when installed)
+    make image          # build the main DSH Web image
+    make gateway        # build the example gateway image
+    make e2e            # full kind walkthrough (optional, slow)
+
+Install the gateway dev dependencies once:
+
+    python -m pip install -r examples/dsh-agents-as-a-service/gateway/requirements-dev.txt
+
+## Pull requests
+
+- Use a Conventional Commit title, for example feat(gateway): add wake metrics
+  or docs(examples): clarify SSO trust boundary. PR titles are linted.
+- Keep the diff scoped. Squash merge into main; history stays linear.
+- Required checks: lint, python, manifests, gateway-image, pr-title, CodeQL,
+  and dependency-review. Branch protection is described in docs/gitflow.md.
+- Update the docs that the change affects; docs are part of the change, not a
+  follow-up.
+- Never commit a real secret. Secret-shaped YAML belongs in a *.yaml.example
+  file, and versions live in versions.env only.
+
+## Changing versions
+
+    make set-version DSH_VERSION=dsh-vX.Y.Z RELEASE_REVISION=r2
+    make check
+
+CHANGELOG.md is generated by git-cliff from Conventional Commits. Do not edit
+it by hand; the release workflow regenerates it.
+
+## Adding an example
+
+Read docs/examples.md, then add examples/<name>/ with:
+
+- README.md (what it demonstrates, prerequisites, steps, teardown)
+- manifests/NN-*.yaml (numbered, plain kubectl)
+- optional manifests/exposure/<variant>/ with its own README.md
+- optional components (a Dockerfile plus README and tests per component)
+- scripts/ with executable, idempotent, self-cleaning scripts
+- docs/ for deeper material
+
+List it in examples/README.md. scripts/check-examples.sh enforces this layout.
+
+## Documentation
+
+- Root README.md is the front door: main image first, then examples.
+- docs/ holds repository-wide material; example-specific material belongs in
+  the example directory.
+
+## Branches and releases
+
+See docs/gitflow.md for the branch model and docs/versioning.md for the
+release identity, channels and rollback rules.
+
+## Security
+
+See SECURITY.md. Report vulnerabilities privately through GitHub Security
+Advisories; do not open a public issue.

Dockerfile

@@ -1,26 +1,37 @@
 # syntax=docker/dockerfile:1.7
-
+#
+# The primary artifact of this repository: DeepSeek Harness Web (dsh web),
+# packaged as a slim, non-root, multi-arch runtime image.
+#
+# Build args (all pinned in versions.env, verified by scripts/check-versions.sh):
+#   DSH_REPO              upstream git remote to package
+#   DSH_VERSION           upstream git ref to build (tag or branch)
+#   RELEASE_REVISION      optional repository revision label (r2, r3, ...)
+#   PNPM_VERSION          pnpm used to build DSH
+#   VCS_REF               this repository's commit, recorded in OCI labels
+#   NODE_BUILD_IMAGE      node image used to build DSH
+#   NODE_RUNTIME_IMAGE    node image used at runtime
 ARG NODE_BUILD_IMAGE=docker.io/node:24-trixie
 ARG NODE_RUNTIME_IMAGE=docker.io/node:24-trixie-slim
 
 # ---------------------------------------------------------------------------
-# Build stage
+# Build stage: clone DSH at the pinned ref, build, and package the CLI.
 # ---------------------------------------------------------------------------
-FROM ${NODE_BUILD_IMAGE} AS build
+FROM $NODE_BUILD_IMAGE AS build
 
 ARG DSH_REPO=https://github.com/deepseek-ai/deepseek-harness.git
-ARG DSH_VERSION=dsh-v0.2.1-rc.2
+ARG DSH_VERSION=dsh-v0.2.1-rc.3
 ARG PNPM_VERSION=11.28.5
 
 ENV CI=true \
     NODE_OPTIONS=--max-old-space-size=4096
 
 RUN corepack enable \
- && corepack prepare "pnpm@${PNPM_VERSION}" --activate
+ && corepack prepare "pnpm@$PNPM_VERSION" --activate
 
 WORKDIR /src
 
-RUN git clone --depth 1 --branch "${DSH_VERSION}" "${DSH_REPO}" .
+RUN git clone --depth 1 --branch "$DSH_VERSION" "$DSH_REPO" .
 
 RUN pnpm install --frozen-lockfile
 
@@ -44,29 +55,47 @@ RUN cd /opt/dsh \
 # ---------------------------------------------------------------------------
 # Runtime stage
 # ---------------------------------------------------------------------------
-FROM ${NODE_RUNTIME_IMAGE} AS runtime
+FROM $NODE_RUNTIME_IMAGE AS runtime
 
-ARG DSH_VERSION
+ARG DSH_VERSION=dsh-v0.2.1-rc.3
+ARG RELEASE_REVISION=r4
+ARG PNPM_VERSION=11.28.5
+ARG VCS_REF=unknown
 
 LABEL org.opencontainers.image.title="DeepSeek Harness Web packaged by SREDevOps.org" \
-      org.opencontainers.image.version="${DSH_VERSION}" \
+      org.opencontainers.image.description="DeepSeek Harness Web (dsh web) as a slim, non-root, Kubernetes-ready image" \
-      org.opencontainers.image.source="https://github.com/sredevopsorg/deepseek-kubernetes-sandbox"
+      org.opencontainers.image.source="https://github.com/sredevopsorg/deepseek-kubernetes-sandbox" \
+      org.opencontainers.image.version="$DSH_VERSION" \
+      org.opencontainers.image.revision="$VCS_REF" \
+      org.opencontainers.image.licenses="MIT" \
+      io.sredevopsorg.dsh.version="$DSH_VERSION" \
+      io.sredevopsorg.release.revision="$RELEASE_REVISION"
 
 ENV NODE_ENV=production \
     HOME=/home/node \
     DSH_HOME=/home/node/.dsh \
     DSH_PORT=3080 \
-    PATH="/app/node_modules/.bin:${PATH}"
+    PATH="/app/node_modules/.bin:$PATH"
 
-# git/ripgrep are useful for DSH agent tools; tini handles signals.
+# git/ripgrep/jq/yq/curl/gh are deliberate agent tooling parity: a sandboxed DSH
+# instance expects the usual developer CLI. tini reaps signals for a clean stop.
 RUN apt-get update \
  && apt-get install -y --no-install-recommends \
       ca-certificates \
       git \
       ripgrep \
+      jq \
+      yq \
+      curl \
+      wget \
       tini \
+      gh \
  && rm -rf /var/lib/apt/lists/* \
- && install -d -o node -g node -m 0755 /workspace "${DSH_HOME}"
+ && curl -LsSf https://astral.sh/uv/install.sh | sh \
+     && install -d -o node -g node -m 0755 /workspace "$DSH_HOME" \
+     && corepack enable \
+     && corepack prepare "pnpm@$PNPM_VERSION" --activate \
+     && pnpm --version
 
 COPY --from=build --chown=node:node /opt/dsh /app
 
@@ -88,7 +117,7 @@ if [ -n "$DSH_PUBLIC_URL" ]; then
   set -- --public-url "$DSH_PUBLIC_URL" "$@"
 fi
 
-# Additional trusted hosts (e.g. the public gateway host behind an Ingress).
+# Additional trusted hosts (e.g. the public gateway host behind a proxy).
 # DSH Host/Origin-fences /api: without this, requests forwarded with the
 # browser's Host header are rejected. Accepts comma- or space-separated names;
 # localhost/127.0.0.1 are always trusted below.
@@ -117,4 +146,4 @@ USER node
 EXPOSE 3080
 VOLUME ["/home/node/.dsh"]
 STOPSIGNAL SIGTERM
-ENTRYPOINT ["/usr/bin/tini", "--", "/usr/local/bin/dsh-entrypoint"]
+ENTRYPOINT ["/usr/bin/tini", "--", "/usr/local/bin/dsh-entrypoint"]

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Nicolás Georger
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Makefile

@@ -1,37 +1,82 @@
-# Local build and test helpers. Every variable can be overridden, e.g.
+# Canonical local entrypoint. Includes versions.env so there is exactly one
-#   make image DSH_VERSION=dsh-v0.2.1-rc.2 IMAGE=dsh-web:dev
+# place to bump a version (run "make check" to verify pins across the repo).
-#   make test
+#
-DSH_VERSION ?= dsh-v0.2.1-rc.2
+#   make image        build the main DSH Web image
-PNPM_VERSION ?= 11.28.5
+#   make gateway      build the example gateway image
-IMAGE ?= dsh-web:0.2.1-rc.2
+#   make test         gateway unit tests
-GATEWAY_IMAGE ?= ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway
+#   make lint         ruff + shellcheck (+ yamllint/actionlint when installed)
-GATEWAY_DIR := examples/dsh-agents-as-a-service/gateway
+#   make check        versions, example layout and manifest YAML checks
-PYTHON ?= python3
+#   make e2e          full example walkthrough on a kind cluster
-DSH_PORT ?= 3080
+#   make changelog    regenerate CHANGELOG.md with git-cliff
+include versions.env
 
-.PHONY: help image gateway run test lint
+RELEASE_IDENTITY := $(DSH_VERSION)$(if $(RELEASE_REVISION),-$(RELEASE_REVISION))
+IMAGE ?= $(GHCR_IMAGE):$(RELEASE_IDENTITY)
+GATEWAY_LOCAL_IMAGE ?= dsh-aaas-gateway:dev
+GATEWAY_DIR := examples/dsh-agents-as-a-service/gateway
+EXAMPLE_DIR := examples/dsh-agents-as-a-service
+PYTHON ?= $(if $(wildcard $(CURDIR)/.venv/bin/python),$(CURDIR)/.venv/bin/python,python3)
+DSH_PORT ?= 3080
+VCS_REF ?= $(shell git rev-parse --short HEAD 2>/dev/null || echo unknown)
+
+.PHONY: help image run gateway test cov lint check e2e changelog release-dry-run set-version clean
 
 help: ## Show available targets
-	@grep -E '^[a-z-]+:.*?## ' $(MAKEFILE_LIST) | sed 's/:.*## /\t/'
+	@grep -E '^[a-z-]+:.*?## ' $(MAKEFILE_LIST) | sed 's/:.*## /	/'
 
-image: ## Build the DSH Web image
+image: ## Build the main DSH Web image (no push)
 	docker build \
 		--build-arg DSH_VERSION=$(DSH_VERSION) \
+		--build-arg RELEASE_REVISION=$(RELEASE_REVISION) \
 		--build-arg PNPM_VERSION=$(PNPM_VERSION) \
+		--build-arg VCS_REF=$(VCS_REF) \
 		-t $(IMAGE) .
 
-gateway: ## Build the gateway image
+run: image ## Build and run the main image (needs DEEPSEEK_API_KEY)
-	docker build -t $(GATEWAY_IMAGE) $(GATEWAY_DIR)/
-
-run: image ## Build and run the DSH Web image
 	docker run --rm -it \
 		-p $(DSH_PORT):3080 \
 		-v dsh-home:/home/node/.dsh \
 		-e DEEPSEEK_API_KEY \
 		$(IMAGE)
 
-test: ## Run the gateway unit tests (needs requirements + requirements-dev installed)
+gateway: ## Build the example gateway image locally
+	docker build -t $(GATEWAY_LOCAL_IMAGE) $(GATEWAY_DIR)/
+
+test: ## Gateway unit tests
 	cd $(GATEWAY_DIR) && $(PYTHON) -m pytest -q
 
-lint: ## Lint the gateway with ruff
+cov: ## Gateway unit tests with coverage (needs pytest-cov)
-	cd $(GATEWAY_DIR) && ruff check .
+	cd $(GATEWAY_DIR) && $(PYTHON) -m pytest -q --cov=. --cov-report=term-missing --cov-report=xml:coverage.xml
+
+lint: ## Lint Python, shell, YAML and Dockerfiles (skips missing tools locally)
+	cd $(GATEWAY_DIR) && $(PYTHON) -m ruff check .
+	cd $(GATEWAY_DIR) && $(PYTHON) -m ruff format --check .
+	shellcheck build.sh scripts/*.sh $(EXAMPLE_DIR)/scripts/*.sh
+	@command -v yamllint >/dev/null 2>&1 && yamllint . || echo "yamllint not installed; CI enforces it"
+	@command -v actionlint >/dev/null 2>&1 && actionlint || echo "actionlint not installed; CI enforces it"
+
+check: ## Verify version pins, example layout and manifest YAML
+	./scripts/check-versions.sh
+	./scripts/check-examples.sh
+	$(PYTHON) scripts/check-manifests.py
+
+e2e: ## Run the full example walkthrough on the current kind cluster
+	$(EXAMPLE_DIR)/scripts/e2e-kind.sh
+
+changelog: ## Regenerate CHANGELOG.md from Conventional Commits
+	@command -v git-cliff >/dev/null 2>&1 || { echo "install git-cliff: https://git-cliff.org" >&2; exit 1; }
+	git-cliff --output CHANGELOG.md
+
+release-dry-run: check ## Validate the release identity and preview release notes
+	@echo "release identity: $(RELEASE_IDENTITY)"
+	@echo "main image:       $(GHCR_IMAGE):$(RELEASE_IDENTITY)"
+	@echo "gateway image:    $(GATEWAY_IMAGE):$(RELEASE_IDENTITY)"
+	@if git rev-parse -q --verify "refs/tags/$(RELEASE_IDENTITY)" >/dev/null; then echo "ERROR: tag already exists" >&2; exit 1; fi
+	@command -v git-cliff >/dev/null 2>&1 && git-cliff --unreleased --tag $(RELEASE_IDENTITY) || echo "git-cliff not installed; skipping notes preview"
+
+set-version: ## Bump pins: make set-version DSH_VERSION=dsh-vX [RELEASE_REVISION=rN]
+	@test -n "$(DSH_VERSION)" || { echo "DSH_VERSION is required" >&2; exit 1; }
+	./scripts/set-version.sh "$(DSH_VERSION)" "$(RELEASE_REVISION)"
+
+clean: ## Remove local build/test caches
+	rm -rf .pytest_cache .ruff_cache $(GATEWAY_DIR)/.pytest_cache $(GATEWAY_DIR)/.ruff_cache $(GATEWAY_DIR)/__pycache__

README.md

@@ -1,180 +1,233 @@
 # deepseek-kubernetes-sandbox
 
-Packages [DeepSeek Harness](https://github.com/deepseek-ai/deepseek-harness) Web (`dsh web`) into
+**DeepSeek Harness Web, packaged as a container.** This repository's primary
-a multi-arch, Kubernetes-ready container image, and ships the
+artifact is a slim, non-root, multi-arch image of
-[agents-as-a-service](examples/dsh-agents-as-a-service/) platform pattern — running a personal
+[DeepSeek Harness](https://github.com/deepseek-ai/deepseek-harness) Web
-DSH Web instance per user on [kubernetes-sigs/agent-sandbox](https://github.com/kubernetes-sigs/agent-sandbox)
+(`dsh web`), ready for Docker and Kubernetes. Everything else exists to support
-behind a small browser-usable gateway.
+that image or to demonstrate an implementation on top of it.
 
-## What's in this repo
+The flagship implementation is
+[`examples/dsh-agents-as-a-service/`](examples/dsh-agents-as-a-service/): the
+"agents-as-a-service" platform pattern with one DSH Web instance per user,
+provisioned from a warm pool on
+[kubernetes-sigs/agent-sandbox](https://github.com/kubernetes-sigs/agent-sandbox),
+suspended when idle, and fronted by a small browser-usable gateway.
 
-| Path | Purpose |
+## Quick start
-| --- | --- |
-| [`Dockerfile`](Dockerfile) | Multi-stage build that clones DSH, `pnpm pack`s the CLI, and produces a slim runtime image (`:3080`) |
-| [`build.sh`](build.sh), [`Makefile`](Makefile) | Local image builds: DSH Web and gateway, plus test/lint targets |
-| [`examples/dsh-agents-as-a-service/`](examples/dsh-agents-as-a-service/) | The full multi-tenant platform pattern (warm pool, per-user claims, gateway, smoke test) |
-| [`examples/dsh-agents-as-a-service/gateway/`](examples/dsh-agents-as-a-service/gateway/) | Starlette ASGI gateway: signup, cookie sessions, `/u/{user}/**` HTTP + WebSocket proxy, idle sweeper |
-| [`deploy/k8s/sandbox-template.yaml`](deploy/k8s/sandbox-template.yaml) | Minimal single-tenant `SandboxTemplate` |
-| [`docs/architecture.md`](docs/architecture.md) | Container and sequence diagrams, design decisions, security notes |
-| [`.github/workflows/`](.github/workflows/) | CI: manifests dry-run, gateway tests/lint, multi-arch image builds |
-
-## Published images
-
-Everything is published to GitHub Container Registry as
-`ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox`:
-
-| Tag | Contents | Port |
-| --- | --- | --- |
-| `dsh-v0.2.1-rc.2` (also `main`, `latest`) | DSH Web image | `3080` |
-| `gateway` | Starlette gateway image | `8080` |
-
-The DSH Web tag matches the upstream DSH git tag it was built from.
-
-## Quick start (DSH Web image)
 
 ```bash
 docker run -d --name dsh-web \
   -p 3080:3080 \
   -v dsh-home:/home/node/.dsh \
   -e DEEPSEEK_API_KEY \
-  ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.2
+  ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.3-r4
 ```
 
-**DSH Web is not usable at a bare `/`.** Without its launch-token cookie it answers `401`, and
+DSH Web is **not usable at a bare `/`**. Without its launch-token cookie it
-the token is only printed in the startup logs:
+answers `401`, and the token is printed only in the startup logs:
 
 ```bash
 docker logs dsh-web 2>&1 | grep -m1 '?token='
 # dsh web: http://localhost:3080/?token=...
 ```
 
-Open the printed `?token=...` URL once — DSH sets its auth cookie and the UI loads normally
+Open the printed `?token=...` URL once: DSH sets its auth cookie and the UI loads
-afterwards. Hitting `/` directly (or after the cookie expires) returns `401` by design; that is
+normally afterwards. Hitting `/` directly (or after the cookie expires) returns
-why Kubernetes probes use `/favicon.svg` (see below) and why the gateway performs this
+`401` by design.
-handshake for the browser.
 
-> **Different host port?** If `3080` is already taken on your workstation, map another port and
+### Host port and public URL
-> set the public URL so the printed token URL matches: `-p 18081:3080 -e
-> DSH_PUBLIC_URL=http://localhost:18081`, then open `http://localhost:18081/?token=...`.
 
-## Quick start (Kubernetes)
+If `3080` is taken locally, map another port and set the public URL so the quoted
+token URL matches:
 
 ```bash
-kubectl create namespace dsh-demo --dry-run=client -o yaml | kubectl apply -f -
+docker run -d --name dsh-web -p 18081:3080 \
-kubectl -n dsh-demo create secret generic dsh-provider-keys \
+  -e DSH_PUBLIC_URL=http://localhost:18081 \
-  --from-literal=DEEPSEEK_API_KEY="sk-..."
+  -v dsh-home:/home/node/.dsh \
-kubectl apply -f deploy/k8s/sandbox-template.yaml
+  -e DEEPSEEK_API_KEY \
-
+  ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.3-r4
-# A template needs a warm pool and a claim to become a running Sandbox.
+# then open http://localhost:18081/?token=...
-kubectl apply -f - <<'EOF'
-apiVersion: extensions.agents.x-k8s.io/v1beta1
-kind: SandboxWarmPool
-metadata:
-  name: dsh-pool
-  namespace: dsh-demo
-spec:
-  replicas: 1
-  sandboxTemplateRef:
-    name: dsh-web-template
----
-apiVersion: extensions.agents.x-k8s.io/v1beta1
-kind: SandboxClaim
-metadata:
-  name: dsh
-  namespace: dsh-demo
-spec:
-  warmPoolRef:
-    name: dsh-pool
-EOF
-kubectl -n dsh-demo wait sandboxclaim/dsh --for=condition=Ready --timeout=180s
 ```
 
-Then reach the instance through its launch-token URL:
+### Hosts, probes and the 401
+
+- **Probes must not hit `/`.** It returns `401` without the launch token, so a
+  readiness/liveness probe on `/` crash-loops the pod. Probe `/favicon.svg`
+  instead: it is unauthenticated. The shipped manifests use it.
+- **Host allow-listing.** DSH rejects unknown `Host` headers. `localhost` and
+  `127.0.0.1` are always trusted; add any other public hostname to
+  `DSH_TRUSTED_HOSTS` (comma or space separated). A gateway or Ingress that
+  forwards the browser's `Host` needs its hostname listed there.
+- **State lives in `/home/node/.dsh`.** Mount a volume (Docker) or PVC
+  (Kubernetes) to keep conversations, sessions and config across restarts.
+
+### Runtime environment
+
+| Variable | Default | Purpose |
+| --- | --- | --- |
+| `DEEPSEEK_API_KEY` | empty | Provider credential consumed by DSH. Inject it; never bake it into the image or commit it. |
+| `DSH_PORT` | `3080` | Port DSH Web listens on inside the container. |
+| `DSH_HOST` | auto-detected pod/container IP | Bind address. Leave empty in Kubernetes. |
+| `DSH_PUBLIC_URL` | `http://localhost:${DSH_PORT}` | Public base URL used in generated links and the launch-token URL in the logs. |
+| `DSH_TRUSTED_HOSTS` | empty | Extra trusted `Host`/`Origin` entries, comma/space separated. |
+| `DSH_HOME` | `/home/node/.dsh` | DSH state directory (mount a volume here). |
+
+DSH also resolves the standard per-provider environment names —
+`OPENROUTER_API_KEY`, `GEMINI_API_KEY`, `NVIDIA_API_KEY`, `OPENAI_API_KEY`,
+`ANTHROPIC_API_KEY`, `GROQ_API_KEY`, `XAI_API_KEY`, `HF_TOKEN`, and others —
+through its packaged provider catalog. Inject them the same way; a key saved in
+DSH's credential store wins over the environment. See
+[provider credentials](docs/main-image.md#provider-credentials).
+
+Full contract, build args, probes, volumes and signals:
+[docs/main-image.md](docs/main-image.md).
+
+## Published images
+
+Published to GitHub Container Registry. The main image is the repository image;
+example components are nested packages below it:
+
+```
+ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox                              # DSH Web (main image)
+ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox/dsh-agents-as-a-service/gateway   # example gateway
+```
+
+| Tag | Contents | Meaning |
+| --- | --- | --- |
+| `dsh-v0.2.1-rc.3-r4` | DSH Web, port `3080` | **Current release identity.** Immutable: once published it never moves. |
+| `latest` | DSH Web | Most recent release; same digest as the current identity. |
+| `main` | DSH Web | Development channel rebuilt from every push to `main`. Not a release; not for production. |
+| `dsh-v0.2.1-rc.3` | DSH Web | **Legacy tag** published before the release-identity scheme. It is not updated. New deployments use `dsh-v0.2.1-rc.3-r4`. |
+
+The example gateway is published under its nested path with the same release
+identity, e.g.
+`ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox/dsh-agents-as-a-service/gateway:dsh-v0.2.1-rc.3-r4`.
+
+Release identities, channels and rollback rules are explained in
+[docs/versioning.md](docs/versioning.md). Production deployments should pin a
+digest:
 
 ```bash
-SB=$(kubectl -n dsh-demo get sandboxclaim dsh -o jsonpath='{.status.sandbox.name}')
+docker buildx imagetools inspect ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.3-r4
-kubectl -n dsh-demo logs "$SB" | grep -m1 '?token='
+# image: ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox@sha256:<digest>
-kubectl -n dsh-demo port-forward "pod/$SB" 18081:3080
-# open http://localhost:18081/?token=... from the log line
 ```
 
-Two things bite first-time setups:
+## Build from source
-
-- **Probes must not hit `/`.** DSH returns `401` there without the launch token, so a
-  readiness/liveness probe on `/` crash-loops the pod. The shipped templates use
-  `/favicon.svg`, which is unauthenticated; keep that path in custom templates.
-- **Host allow-listing.** DSH rejects unknown `Host` headers. `localhost` and `127.0.0.1` are
-  always trusted; for any other hostname add it to the template's `DSH_TRUSTED_HOSTS` (comma or
-  space separated). The gateway forwards the browser's `Host`, so the public gateway hostname
-  must be listed there.
-
-## The multi-user platform pattern
-
-`examples/dsh-agents-as-a-service/` is a port of the upstream
-[hermes-agents-as-a-service](https://github.com/kubernetes-sigs/agent-sandbox/tree/main/examples/hermes-agents-as-a-service)
-example to DSH Web. It demonstrates the platform shape — one `SandboxTemplate`, one warm pool,
-one tiny `SandboxClaim` per user, and `operatingMode` as the cost dial — plus a gateway that
-turns it into a usable service.
-
-**Browser flow:** open the gateway landing page, sign up, and get an `HttpOnly` session cookie.
-The browser then browses `http://<gateway>/u/<user>/`, which proxies HTTP **and WebSocket** to
-that user's DSH Web. The gateway reads the DSH launch token from the pod logs, performs the
-token handshake server-side, and injects the resulting DSH cookie on every proxied request — the
-browser never sees the token. Suspended instances are woken transparently on the next request;
-idle ones are suspended again after `IDLE_TIMEOUT`.
-
-See the [example README](examples/dsh-agents-as-a-service/README.md) for the full walkthrough
-and [docs/architecture.md](docs/architecture.md) for the diagrams and trade-offs.
-
-### Mechanism mapping: Hermes → DSH
-
-| Hermes example mechanism | Role | Adaptation for DSH |
-| :--- | :--- | :--- |
-| `SandboxTemplate` | Reusable Pod blueprint | Image `dsh-web`, port `3080`, probes on `/favicon.svg` |
-| `volumeClaimTemplates` | Auto-create a PVC per user | Mount `/home/node/.dsh` (DSH state) |
-| `SandboxWarmPool` | Pre-warmed instances | Keep as-is; size for expected concurrency |
-| `SandboxClaim` + `warmPoolRef` | "Registration" adopts a pooled instance | Keep exactly as-is; one claim per user |
-| `service: true` | Stable DNS per Sandbox | Enabled, so the gateway routes to each user's DSH Web |
-| `envVarsInjectionPolicy: Disallowed` | Reject claims that would cold-start | `DEEPSEEK_API_KEY` injected via `envFrom` on the template (shared platform key) |
-| `operatingMode` | Cost switch: Running / Suspended | Reused directly — suspend idle instances to save cost |
-
-### Key differences from Hermes
-
-- **Multi-arch** — the DSH image is built for amd64 and arm64 (no amd64 nodeSelector).
-- **Single port** — DSH Web serves everything on `3080`; no API/dashboard port split.
-- **One secret** — only `DEEPSEEK_API_KEY`; no dashboard/session/api-server credentials.
-- **Host forwarding** — the gateway forwards `Host` + `X-Forwarded-*` (and keeps
-  `DSH_PUBLIC_URL` empty) so DSH generates reachable links; add the public hostname to
-  `DSH_TRUSTED_HOSTS`.
-- **Browser sessions + WebSocket** — the gateway is Starlette ASGI, so it proxies WebSocket
-  upgrades as well as HTTP/SSE, and authenticates browsers with an `HttpOnly` cookie instead of
-  exposing per-user bearer tokens in URLs.
-
-## Build it yourself
 
 ```bash
-./build.sh              # build the DSH Web image, then run it interactively
+make image    # build the main DSH Web image (clones and builds upstream DSH)
-./build.sh web          # build the DSH Web image only
+make run      # build it, then run it interactively (needs DEEPSEEK_API_KEY)
-./build.sh gateway      # build the gateway image
-
-make image              # same as ./build.sh web
-make gateway            # gateway image
-make test               # gateway unit tests (pytest)
-make lint               # gateway lint (ruff)
 ```
 
-Or directly:
+The pins (`DSH_VERSION`, `RELEASE_REVISION`, `PNPM_VERSION`) come from
+[versions.env](versions.env) — never hard-code them
+(`make check` verifies). [`build.sh`](build.sh) is a deprecated shim that
+forwards to `make`; use the Makefile targets.
 
-```bash
+## Examples
-docker build \
-  --build-arg DSH_VERSION=dsh-v0.2.1-rc.2 \
-  --build-arg PNPM_VERSION=11.28.5 \
-  -t dsh-web:0.2.1-rc.2 .
 
-docker build -t ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway \
+Self-contained implementations that consume the image. Index and contract:
-  examples/dsh-agents-as-a-service/gateway/
+[`examples/README.md`](examples/README.md) and
-```
+[docs/examples.md](docs/examples.md).
 
-See [`Dockerfile`](Dockerfile) for build args (`DSH_REPO`, `DSH_VERSION`, `PNPM_VERSION`) and
+| Example | What it demonstrates |
-the runtime image contract (non-root `node` user, `DSH_HOME=/home/node/.dsh`, `EXPOSE 3080`).
+| --- | --- |
-`.env.sample` documents the runtime variables for both images.
+| [`examples/dsh-agents-as-a-service/`](examples/dsh-agents-as-a-service/) | Full multi-tenant platform: SandboxTemplate with per-user PVCs, warm pool, one claim per user, suspend-when-idle, wake-on-return, browser gateway with signup + `HttpOnly` sessions + HTTP/WebSocket proxy, Ingress or Gateway API + GitHub SSO exposure, and opt-in gVisor/NetworkPolicy/provider-key hardening. Start with the [walkthrough](examples/dsh-agents-as-a-service/README.md) and the [architecture](examples/dsh-agents-as-a-service/docs/architecture.md). |
+| [`examples/minimal-single-tenant/`](examples/minimal-single-tenant/) | The smallest useful setup: one `SandboxTemplate` and one `SandboxClaim`, reached through `kubectl port-forward` + the launch-token URL. Manifest: [`manifests/sandbox-template.yaml`](examples/minimal-single-tenant/manifests/sandbox-template.yaml). |
+
+The gateway is a component of the multi-tenant example and has its own
+[README](examples/dsh-agents-as-a-service/gateway/README.md) (API, configuration,
+auth/SSO, limitations). The example also documents opt-in gVisor,
+`nodeSelector`, NetworkPolicy and extra provider-key hardening in
+[optional hardening](examples/dsh-agents-as-a-service/docs/optional-hardening.md).
+
+## Agent skills
+
+DSH discovers project skills from `.dsh/skills/<name>/SKILL.md`. The repository
+ships [`dsh-agent-sandbox-platform`](.dsh/skills/dsh-agent-sandbox-platform/SKILL.md),
+which covers operating and extending the platform, the optional
+[agent-sandbox MCP server](https://github.com/kubernetes-sigs/agent-sandbox/blob/main/clients/integrations/mcp-server/README.md),
+and a read-only cluster preflight. Runbooks, the MCP reference, the extension
+guide and troubleshooting notes live beside `SKILL.md`.
+
+## Repository layout
+
+| Path | Purpose |
+| --- | --- |
+| [`Dockerfile`](Dockerfile) | Primary artifact: the multi-stage DSH Web image (port `3080`). |
+| [`versions.env`](versions.env) | Single source of truth for the DSH ref, repository revision, pnpm/control-plane versions and image names. |
+| [`Makefile`](Makefile), [`build.sh`](build.sh) | Canonical local entrypoint; `build.sh` is a deprecated shim. |
+| [`docs/`](docs/README.md) | Repository docs: image contract, example contract, gitflow, versioning. |
+| [`examples/`](examples/README.md) | One self-contained implementation per directory. |
+| [`examples/dsh-agents-as-a-service/`](examples/dsh-agents-as-a-service/) | Multi-tenant platform example: `manifests/`, `gateway/`, `docs/`, `scripts/`. |
+| [`examples/minimal-single-tenant/`](examples/minimal-single-tenant/) | Single-sandbox quickstart. |
+| [`scripts/`](scripts/) | Repository checks: versions, example layout, manifest YAML, version bump. |
+| [`.dsh/skills/`](.dsh/skills/) | Project-local DSH skills, auto-discovered from the git root. |
+| [`.github/`](.github/) | CI, release automation, dependency updates, PR/issue templates. |
+| [`.env.sample`](.env.sample) | Documented local configuration (copy to `.env`; never commit it). |
+
+## Development
+
+The Makefile is the canonical entrypoint. No cluster is needed for `check`,
+`test`, `lint`, `gateway` or `image`:
+
+| Target | What it does |
+| --- | --- |
+| `make check` | Version pins, example layout and manifest YAML checks. Run before every commit. |
+| `make test` | Gateway unit tests (`pytest`). |
+| `make lint` | `ruff` + `shellcheck` (+ `yamllint`/`actionlint` when installed). |
+| `make image` | Build the main DSH Web image. |
+| `make gateway` | Build the example gateway image locally (`dsh-aaas-gateway:dev`). |
+| `make e2e` | Full kind walkthrough of the multi-tenant example (needs a cluster with agent-sandbox). |
+| `make changelog` | Regenerate `CHANGELOG.md` with git-cliff (release only). |
+| `make set-version` | Bump pins in `versions.env`; e.g. `make set-version DSH_VERSION=<ref> RELEASE_REVISION=rN`. |
+
+Local setup and the PR workflow: [CONTRIBUTING.md](CONTRIBUTING.md); branches,
+required checks and releases: [docs/gitflow.md](docs/gitflow.md).
+
+## Versioning and releases
+
+The release identity is the upstream DSH ref plus an optional repository
+revision: `DSH_VERSION` and `RELEASE_REVISION` in [versions.env](versions.env).
+The current identity is **`dsh-v0.2.1-rc.3-r4`** — the first release under the
+mirrored-DSH scheme at the same upstream DSH ref as the legacy
+`dsh-v0.2.1-rc.3` tag. Tags are immutable; a broken release is fixed by
+publishing `-r(N+1)`, never by re-tagging.
+
+`CHANGELOG.md` is generated by [git-cliff](https://git-cliff.org) from
+Conventional Commits and is never edited by hand. See
+[`CHANGELOG.md`](CHANGELOG.md), [docs/versioning.md](docs/versioning.md) and
+[cliff.toml](cliff.toml).
+
+## Migrating from the previous layout
+
+If you are coming from an older checkout, these paths moved. Nothing else changed
+semantically; the content was split into the example it belongs to.
+
+| Old path | New path |
+| --- | --- |
+| `gateway-api/dsh-demo/` (Gateway API + oauth2-proxy / GitHub SSO) | `examples/dsh-agents-as-a-service/manifests/exposure/gateway-api-sso/` (now `70-gateway.yaml` ... `74-tls-secret.yaml.example`) |
+| `examples/dsh-agents-as-a-service/60-ingress.yaml` | `examples/dsh-agents-as-a-service/manifests/exposure/ingress/60-ingress.yaml` |
+| `examples/dsh-agents-as-a-service/NN-*.yaml` (`00-` ... `50-`) | `examples/dsh-agents-as-a-service/manifests/NN-*.yaml` |
+| `examples/dsh-agents-as-a-service/run-test-kind.sh` | `examples/dsh-agents-as-a-service/scripts/e2e-kind.sh` |
+| `deploy/k8s/sandbox-template.yaml` | `examples/minimal-single-tenant/manifests/sandbox-template.yaml` |
+| `docs/architecture.md` | `examples/dsh-agents-as-a-service/docs/architecture.md` |
+
+The SSO walkthrough that lived in `gateway-api/dsh-demo/README.md` is merged
+into the [multi-tenant example README](examples/dsh-agents-as-a-service/README.md)
+(step 9) and the [exposure README](examples/dsh-agents-as-a-service/manifests/exposure/README.md).
+
+## Contributing
+
+- [CONTRIBUTING.md](CONTRIBUTING.md) — local setup, PR workflow, what a change needs.
+- [AGENTS.md](AGENTS.md) — repository conventions for AI coding agents (and humans) and the CI commands.
+- [SECURITY.md](SECURITY.md) — private vulnerability reporting and project threat notes.
+- [CODE_OF_CONDUCT.md](CODE_OF_CONDUCT.md) — community standards.
+- [docs/gitflow.md](docs/gitflow.md) — branches, protected `main`, required checks, release process.
+
+Do not commit secrets; secret-shaped YAML lives in `*.yaml.example` files, and
+version pins change only through `versions.env` / `make set-version`.
+
+## License
+
+[MIT](LICENSE) © Nicolás Georger.

SECURITY.md

@@ -0,0 +1,48 @@
+# Security policy
+
+## Supported versions
+
+Only the latest published release is supported. Image tags are immutable;
+fixes ship as a new release (see docs/versioning.md).
+
+## Reporting a vulnerability
+
+Report vulnerabilities privately through GitHub Security Advisories:
+
+https://github.com/sredevopsorg/deepseek-kubernetes-sandbox/security/advisories/new
+
+Do not open a public issue, and do not include live credentials in a report.
+You can expect an acknowledgement within a few days and a coordinated
+disclosure once a fix is available.
+
+## Threat notes specific to this project
+
+- **Launch token in pod logs.** The example gateway reads DSH's launch token
+  from pod logs (pods/log). Anyone with access to those logs can impersonate a
+  tenant. Keep the gateway's RBAC namespace-scoped and treat pod logs as
+  sensitive. Replacing log scraping with an upstream token API is tracked in
+  the example architecture document.
+- **SSO header trust boundary.** AUTH_PROXY_HEADER makes the gateway trust an
+  identity header (for example X-Forwarded-User). Enable it only when the
+  gateway Service is reachable exclusively through the authenticating proxy;
+  otherwise any client can spoof the header. The SSO exposure variant ships a
+  NetworkPolicy that restricts gateway access to oauth2-proxy pods; a custom
+  exposure needs an equivalent.
+- **Shared provider keys.** The example injects DEEPSEEK_API_KEY and any keys in
+  the optional dsh-provider-keys-extra Secret into every tenant sandbox (a
+  warm-pool constraint). Treat tenants as mutually trusting until per-tenant
+  credentials or an egress proxy exist.
+- **Optional isolation is opt-in.** gVisor, nodeSelector, the sandbox/exposure
+  NetworkPolicies and extra provider keys are opt-in. Without a
+  NetworkPolicy-capable CNI or a gVisor runtime, the base example is not
+  tenant-isolated; see examples/dsh-agents-as-a-service/docs/optional-hardening.md.
+- **TLS is external.** Terminate TLS at an Ingress or Gateway and set
+  COOKIE_SECURE=true. Plain HTTP outside localhost exposes session cookies.
+- **No secrets in the repository.** The repository only ships empty Secret
+  manifests and *.yaml.example files.
+
+## Dependency and supply chain
+
+GitHub Actions are pinned by commit SHA. The CodeQL workflow scans Python and
+Actions. The release workflow publishes images with SBOM and provenance
+attestations.

build.sh

@@ -1,68 +1,19 @@
 #!/usr/bin/env bash
-# Build the DSH Web and/or gateway images locally.
+# Deprecated compatibility shim: "make" is the canonical entrypoint.
 #
-# Usage:
+#   ./build.sh            -> make run   (build the main image, then run it)
-#   ./build.sh              # build the DSH Web image, then run it interactively
+#   ./build.sh web        -> make image
-#   ./build.sh web          # build the DSH Web image only
+#   ./build.sh gateway    -> make gateway
-#   ./build.sh gateway      # build the gateway image (examples/.../gateway/)
 #
-# Overridable environment:
+# Use the Makefile targets directly for everything else (test, lint, check, e2e).
-#   DSH_VERSION    DSH git ref to build    (default dsh-v0.2.1-rc.2)
-#   PNPM_VERSION   pnpm version            (default 11.28.5)
-#   IMAGE          DSH Web image tag       (default dsh-web:<version>)
-#   DSH_PORT       host port for docker run (default 3080)
-#   GATEWAY_IMAGE  gateway image tag       (default ghcr.io/...:gateway)
-#   RUN            0 to build without running (default 1)
 set -euo pipefail
 cd "$(dirname "$0")"
 
-DSH_VERSION="${DSH_VERSION:-dsh-v0.2.1-rc.2}"
+echo "build.sh is deprecated; use 'make image', 'make run' or 'make gateway'." >&2
-PNPM_VERSION="${PNPM_VERSION:-11.28.5}"
-IMAGE="${IMAGE:-dsh-web:${DSH_VERSION#dsh-v}}"
-GATEWAY_IMAGE="${GATEWAY_IMAGE:-ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway}"
-DSH_PORT="${DSH_PORT:-3080}"
-RUN="${RUN:-1}"
-GATEWAY_DIR=examples/dsh-agents-as-a-service/gateway
-
-build_web() {
-  docker build \
-    --build-arg "DSH_VERSION=${DSH_VERSION}" \
-    --build-arg "PNPM_VERSION=${PNPM_VERSION}" \
-    -t "${IMAGE}" \
-    "$@" \
-    .
-}
-
-build_gateway() {
-  docker build -t "${GATEWAY_IMAGE}" "$@" "${GATEWAY_DIR}/"
-}
-
-usage() {
-  echo "usage: $0 [run|web|gateway] [extra docker build args...]" >&2
-  exit 2
-}
 
 case "${1:-run}" in
-  run)
+  run) exec make run ;;
-    shift
+  web) exec make image ;;
-    build_web "$@"
+  gateway) exec make gateway ;;
-    if [ "${RUN}" = "1" ]; then
+  *) echo "usage: $0 [run|web|gateway]" >&2; exit 2 ;;
-      docker run --rm -it \
-        -p "${DSH_PORT}:3080" \
-        -v dsh-home:/home/node/.dsh \
-        -e DEEPSEEK_API_KEY \
-        "${IMAGE}"
-    fi
-    ;;
-  web)
-    shift
-    build_web "$@"
-    ;;
-  gateway)
-    shift
-    build_gateway "$@"
-    ;;
-  *)
-    usage
-    ;;
 esac

cliff.toml

@@ -0,0 +1,49 @@
+# git-cliff configuration: release notes and CHANGELOG.md are generated from
+# Conventional Commits. See docs/versioning.md for the release procedure.
+
+[changelog]
+header = """
+# Changelog
+
+All notable changes to this repository are documented here.
+Generated by git-cliff from Conventional Commits; do not edit this file by hand.
+
+"""
+body = """
+{% if version %}\
+## [{{ version }}] - {{ timestamp | date(format="%Y-%m-%d") }}
+{% else %}\
+## [Unreleased]
+{% endif %}\
+{% for group, commits in commits | group_by(attribute="group") %}
+### {{ group | upper_first }}
+{% for commit in commits %}
+- {% if commit.scope %}**{{ commit.scope }}:** {% endif %}{{ commit.message | split(pat="\n") | first | upper_first }} ({{ commit.id | truncate(length=7, end="") }})
+{%- endfor %}
+{% endfor %}\n
+"""
+footer = ""
+trim = true
+
+[git]
+conventional_commits = true
+filter_unconventional = false
+split_commits = false
+commit_parsers = [
+  { message = "^feat", group = "Added" },
+  { message = "^fix", group = "Fixed" },
+  { message = "^perf", group = "Performance" },
+  { message = "^refactor", group = "Changed" },
+  { message = "^docs", group = "Documentation" },
+  { message = "^build", group = "Build" },
+  { message = "^ci", group = "CI" },
+  { message = "^test", group = "Tests" },
+  { message = "^chore", group = "Maintenance" },
+  { message = "^revert", group = "Reverted" },
+  { message = ".*", group = "Other" },
+]
+protect_breaking_commits = false
+filter_commits = false
+# Release tags are dsh-vX.Y.Z[-rN]; the single legacy pre-scheme tag is v0.0.1.
+tag_pattern = "^(v|dsh-v).*$"
+sort_commits = "oldest"

docs/README.md

@@ -0,0 +1,47 @@
+# Repository documentation
+
+Repository-wide documentation lives here. Example-specific material lives with
+its example under [`examples/<name>/docs/`](../examples/) — see the
+[agents-as-a-service architecture](../examples/dsh-agents-as-a-service/docs/architecture.md)
+for the deep-dive that used to live in this directory.
+
+If you are new, read the [root README](../README.md) first: it is image-first and
+gets a DSH Web container running before anything else.
+
+## Index
+
+| Document | Read it for |
+| --- | --- |
+| [main-image.md](main-image.md) | The primary artifact: build args, runtime environment, entrypoint, probes, volumes/ports/signals, non-root contract, image names, tags and digests. |
+| [examples.md](examples.md) | The example contract: required layout, manifest rules, exposure variants, components and image naming, scripts, docs, and how to add a new example. |
+| [gitflow.md](gitflow.md) | Branches, protected `main`, squash merges, Conventional PR titles, required CI checks, release branches, hotfixes and the one-time GitHub settings checklist. |
+| [versioning.md](versioning.md) | Release identity (`DSH ref` + optional `-rN`), why the current identity is `dsh-v0.2.1-rc.3-r4`, channels, compatibility matrix, bumping pins, the release checklist, rollback, git-cliff and digest pinning. |
+
+## Project skills
+
+DSH discovers project skills from `<git root>/.dsh/skills/<name>/SKILL.md`
+(the nearest `.git` ancestor). This repository ships one:
+
+| Skill | Read it for |
+| --- | --- |
+| [dsh-agent-sandbox-platform](../.dsh/skills/dsh-agent-sandbox-platform/SKILL.md) | Operating and extending the agents-as-a-service platform, agent-sandbox MCP limits and deployment, and a read-only preflight. |
+
+## Example documentation
+
+| Document | Read it for |
+| --- | --- |
+| [examples/README.md](../examples/README.md) | The index of implementations in this repository. |
+| [dsh-agents-as-a-service README](../examples/dsh-agents-as-a-service/README.md) | The multi-tenant platform walkthrough: warm pool, claims, suspend/resume, gateway, exposure and troubleshooting. |
+| [dsh-agents-as-a-service architecture](../examples/dsh-agents-as-a-service/docs/architecture.md) | Container/sequence diagrams, ADRs, security and RBAC, failure modes and the evolution path. |
+| [gateway README](../examples/dsh-agents-as-a-service/gateway/README.md) | The gateway's HTTP/WebSocket API, configuration, auth (including SSO), and limitations. |
+
+## Project policies
+
+| Document | Read it for |
+| --- | --- |
+| [AGENTS.md](../AGENTS.md) | Repository conventions for AI agents and humans, and the commands the CI runs. |
+| [CONTRIBUTING.md](../CONTRIBUTING.md) | Local setup, the change workflow and what a pull request needs. |
+| [SECURITY.md](../SECURITY.md) | Vulnerability reporting and project-specific threat notes (pod logs, SSO header trust, shared provider key, TLS). |
+| [CODE_OF_CONDUCT.md](../CODE_OF_CONDUCT.md) | Community standards. |
+| [CHANGELOG.md](../CHANGELOG.md) | Generated release history (do not edit by hand). |
+| [LICENSE](../LICENSE) | MIT. |

docs/examples.md

@@ -0,0 +1,159 @@
+# Example contract
+
+Every implementation in this repository is a **self-contained example** under
+[`examples/<name>/`](../examples/). Examples demonstrate how to run the main
+DSH Web image (and, when needed, auxiliary components such as the
+agents-as-a-service gateway) on Kubernetes. They are reference material, not
+libraries: each one is applied with plain `kubectl`, documented end to end, and
+deletable in one command.
+
+[`examples/README.md`](../examples/README.md) is the index. If an example is not
+listed there, it does not exist as far as `make check` is concerned.
+
+## Required layout
+
+```
+examples/<name>/
++-- README.md                     # required: what it demonstrates, prerequisites,
+|                                 #   ordered steps, troubleshooting, cleanup
++-- manifests/                    # required
+|   +-- NN-*.yaml                 #   numbered top-level manifests, plain kubectl
+|   +-- optional/                 #   optional opt-in manifests, applied by path
+|       +-- README.md             #     required when optional/ exists
+|       +-- <feature>/NN-*.yaml   #     e.g. network-policy/
+|   +-- exposure/                 #   optional exposure variants
+|       +-- README.md             #     required when exposure/ exists
+|       +-- <variant>/NN-*.yaml   #     e.g. ingress/, gateway-api-sso/
++-- scripts/                      # optional
+|   +-- *.sh                      #   executable, idempotent, self-cleaning
++-- docs/                         # optional deeper material (architecture, ADRs)
++-- <component>/                  # optional published component
+    +-- Dockerfile
+    +-- README.md                 #   required whenever a Dockerfile exists
+    +-- tests...
+```
+
+### Rules the CI enforces
+
+[scripts/check-examples.sh](../scripts/check-examples.sh) fails the build when:
+
+- `examples/README.md` is missing or does not mention `examples/<name>/` for every
+  example directory;
+- an example has no `README.md` or no `manifests/` directory;
+- `manifests/` contains no top-level `*.yaml` files;
+- a `*.yaml` file sits at the example root instead of under `manifests/`;
+- `manifests/exposure/` exists without a `manifests/exposure/README.md` describing
+  the variants;
+- `manifests/optional/` exists without a `manifests/optional/README.md`
+  describing the opt-in manifests;
+- a subdirectory with a `Dockerfile` has no `README.md`;
+- a file in `scripts/` is not executable.
+
+[scripts/check-manifests.py](../scripts/check-manifests.py) additionally parses
+every `manifests/**/*.yaml` and requires `apiVersion`, `kind` and
+`metadata.name`. CI also runs a server-side dry-run against the real
+agent-sandbox CRDs on a throwaway kind cluster.
+
+Run both locally with:
+
+```bash
+make check
+```
+
+## Manifests
+
+- **Numbered and ordered.** `NN-*.yaml` files are applied in filename order and
+  read as a walkthrough: `00-prereqs.yaml`, `10-sandboxtemplate.yaml`,
+  `20-sandboxwarmpool.yaml`, ... Keep the numbering stable; it is referenced from
+  the example README.
+- **Plain kubectl.** No Helm, Kustomize, or custom installer. `kubectl apply -f`
+  against a namespace the example creates is the whole interface.
+- **Safe by default.** Never ship a usable Secret. Secret-shaped manifests are
+  `*.yaml.example` files with obvious placeholders and an inline creation
+  command; real values are generated per install.
+- **Cluster-specific state stays out.** Node affinity, replica counts tuned for a
+  cluster, and similar fields belong in a local patch, not in the shipped
+  manifest. Optional scheduler/runtime hints may ship **commented out** with
+  placeholder labels; they must not be active.
+- **Optional manifests are opt-in.** Put them under
+  `manifests/optional/<feature>/`, document them in
+  `manifests/optional/README.md`, and apply them by path. The top-level
+  `kubectl apply -f manifests/` is non-recursive and does not apply them.
+- **Placeholders are explicit.** Hostnames, GitHub orgs and TLS material use
+  values like `dsh.example.com` / `your-github-org` with a TODO comment.
+
+## Exposure variants
+
+An example that can be reached from outside the cluster puts each option under
+`manifests/exposure/<variant>/` and describes the trade-offs in
+`manifests/exposure/README.md`. Variants are alternatives, not a stack: apply one.
+`dsh-agents-as-a-service` currently ships:
+
+| Variant | Path | What it gives you |
+| --- | --- | --- |
+| Ingress | `manifests/exposure/ingress/` | Traefik-style Ingress + TLS; the gateway does its own session auth. |
+| Gateway API + SSO | `manifests/exposure/gateway-api-sso/` | Gateway API `Gateway`/`HTTPRoute` in front of oauth2-proxy (GitHub OAuth); the gateway inherits `X-Forwarded-User` via `AUTH_PROXY_HEADER`. |
+
+## Components
+
+A component is a program the example needs beyond the main image: today only the
+agents-as-a-service gateway. A component lives in its own subdirectory with:
+
+- `Dockerfile` — its image build;
+- `README.md` — purpose, API/config reference, local development, limitations;
+- tests — unit tests that run without a cluster, plus whatever else applies.
+
+Component images are published as **nested packages below the repository image**:
+
+```
+<registry>/<owner>/<repo>/<example>/<component>
+```
+
+so the gateway is
+`ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox/dsh-agents-as-a-service/gateway`.
+Never create an unrelated top-level package; `check-versions.sh` verifies the
+nesting.
+
+## Scripts
+
+`scripts/*.sh` must be:
+
+- **executable** (the CI checks the mode bit);
+- **idempotent** — safe to re-run, cleaning up before creating;
+- **self-cleaning** — a trap removes the namespace, port-forwards and temp files,
+  even on failure;
+- **non-interactive** — usable in CI, with environment-variable knobs instead of
+  prompts.
+
+`examples/dsh-agents-as-a-service/scripts/e2e-kind.sh` is the reference
+implementation: it runs the README walkthrough and deletes everything it created.
+
+## Documentation
+
+- The example `README.md` is the walkthrough. Keep it runnable: every command
+  block should work when pasted in order.
+- Deeper material (architecture, sequence diagrams, ADRs) belongs in the
+  example's `docs/`, not in the repository-level [docs/](../docs/).
+- Repository-wide docs describe the container and the repo rules; example docs
+  describe one implementation.
+
+## Adding a new example
+
+1. Create `examples/<name>/` with the layout above.
+2. Write `README.md` first: what it demonstrates, prerequisites, numbered steps,
+   troubleshooting, limitations, cleanup.
+3. Add `manifests/NN-*.yaml`; keep secrets as `*.yaml.example`.
+4. If a component needs an image, publish it under
+   `<registry>/<owner>/<repo>/<example>/<component>`.
+5. Add an entry to [`examples/README.md`](../examples/README.md) using the literal
+   `examples/<name>/` path.
+6. Run `make check` and, if you added a component, `make test` and `make lint`.
+7. If the example is expensive to run (kind, images, cluster CRDs), ship a
+   `scripts/e2e-kind.sh` and wire it into CI.
+
+## Current examples
+
+| Example | Demonstrates |
+| --- | --- |
+| [`examples/dsh-agents-as-a-service/`](../examples/dsh-agents-as-a-service/) | The full multi-tenant platform pattern: SandboxTemplate, warm pool, per-user claims, suspend/resume, and the browser gateway. |
+| [`examples/minimal-single-tenant/`](../examples/minimal-single-tenant/) | A single DSH Web sandbox: one SandboxTemplate and a claim. |

docs/gitflow.md

@@ -0,0 +1,128 @@
+# Gitflow: branches, pull requests and CI
+
+This repository uses **trunk-based development with release branches**. `main` is
+always releasable; feature work happens on short-lived branches; releases are cut
+from `main` onto a release branch and tagged with an immutable release identity.
+See [versioning](versioning.md) for what the tags mean.
+
+## Branches
+
+| Branch | Branched from | Merged into | Purpose |
+| --- | --- | --- | --- |
+| `main` | — | — | The integration trunk. Protected, linear history, always releasable. |
+| `feat/<slug>` | `main` | `main` (squash) | New capability or example. |
+| `fix/<slug>` | `main` | `main` (squash) | Bug fix. |
+| `docs/<slug>` | `main` | `main` (squash) | Documentation only. |
+| `refactor/<slug>`, `chore/<slug>`, `test/<slug>` | `main` | `main` (squash) | Non-behavioral rework, maintenance, tests. |
+| `release/<identity>` | `main` at the release commit | — | Release stabilization and tagging. Only release-blocking fixes land here. |
+| `hotfix/<slug>` | The release branch (or the tagged commit) | `main` and the release branch | Urgent production fix. |
+
+Keep branches short-lived. Rebase on `main` rather than merging `main` into the
+branch; the PR is squash-merged, so individual branch commits are never part of
+`main` history.
+
+## Pull requests
+
+1. **One scoped change per PR.** Do not mix a version bump with unrelated work,
+   and update the docs the change touches in the same PR.
+2. **Conventional PR title.** The title becomes the squash commit message, so it
+   is linted by the `pr-title` check: `feat(scope): ...`, `fix(scope): ...`,
+   `docs(scope): ...`, `build: ...`, `ci: ...`, `refactor: ...`, `test: ...`,
+   `chore: ...`. Breaking changes use `feat(scope)!: ...` or a
+   `BREAKING CHANGE:` footer.
+3. **CI must be green.** All required checks below must pass before merge.
+4. **Squash merge only.** `main` stays linear and protected; merged PRs are one
+   commit each.
+5. **No direct pushes to `main`** or to a release branch. Both are protected.
+6. **Review for behavior changes.** Infrastructure, workflow, release and
+   gateway-contract changes need a maintainer review; trivial docs changes still
+   need the checks.
+
+## Required checks
+
+| Check | Workflow / job | What it verifies |
+| --- | --- | --- |
+| `lint` | `ci.yaml` | `scripts/check-versions.sh` (version pins and markdown tokens), ruff on the gateway, shellcheck on shell scripts, yamllint/actionlint when available. |
+| `python` | `ci.yaml` | Gateway unit tests (`pytest`). |
+| `manifests` | `ci.yaml` | `scripts/check-examples.sh`, `scripts/check-manifests.py` and a server-side dry-run of every example manifest against the agent-sandbox CRDs. |
+| `gateway-image` | `ci.yaml` | Builds the gateway image and smoke-tests `/healthz` without a cluster. |
+| `pr-title` | `pr-title.yaml` | Conventional Commit PR title. |
+| `CodeQL` | `codeql.yml` | Static analysis for Python and GitHub Actions. |
+| `dependency-review` | `ci.yaml` | Dependency changes introduced by the PR (job `dependency-review`; runs on pull requests only). |
+
+The image build workflows (`_build-image.yaml`, `build-main.yaml`,
+`build-gateway.yaml`) and `e2e-kind.yaml` are **not** required on every PR: the
+image builds run where they are needed, and the kind end-to-end suite is reserved
+for release validation and manual dispatch because it is slow.
+
+## Releases
+
+Releases are cut from `main`:
+
+1. Confirm `main` is green and `make check`, `make test`, `make lint` pass.
+2. Bump [versions.env](../versions.env) if the DSH ref changed, using
+   `make set-version`; otherwise keep the same `DSH_VERSION` and bump
+   `RELEASE_REVISION`.
+3. Create `release/<identity>` from the release commit.
+4. Run `make release-dry-run` and review the generated notes.
+5. Create and push the annotated `dsh-*` release tag. The `release.yaml`
+   workflow validates that the tag matches [versions.env](../versions.env), builds
+   and pushes the multi-arch images (version + latest), creates the GitHub
+   Release from the git-cliff notes, and opens a `chore(changelog)` PR that
+   refreshes `CHANGELOG.md` on `main`.
+6. Merge the changelog PR and any release-branch-only fixes back to `main`.
+
+Full procedure: [versioning](versioning.md).
+
+## Hotfixes
+
+A released tag is **never** moved or re-tagged — tags and image identities are
+immutable. To fix a broken release:
+
+1. Branch `hotfix/<slug>` from the release tag (or its release branch).
+2. Make the minimal fix, add a test, open a PR; the same required checks apply.
+3. Publish a new identity with a higher `RELEASE_REVISION` (`-r(N+1)`). Do not
+   reuse or delete the broken tag.
+4. Merge the fix back into `main` (or cherry-pick it) so the trunk is fixed too.
+
+Rollback is also a re-release, never a retag: see
+[versioning](versioning.md#rollback).
+
+## Tag protection
+
+All release tags match `dsh-*` and are protected:
+
+- only maintainers (the release workflow) may create them;
+- they cannot be deleted or force-updated;
+- they are annotated and point at the release commit on a release branch.
+
+Image tags derive from the same identity and are equally immutable; the mutable
+`latest` and `main` image channels always point at a release or a trunk build
+respectively.
+
+## One-time GitHub settings checklist
+
+Configure these on the repository before relying on the workflow:
+
+- [ ] **Branches → main**: require a pull request; require the checks `lint`,
+      `python`, `manifests`, `gateway-image`, `pr-title`, `CodeQL`,
+      `dependency-review`; require branches to be up to date; require conversation
+      resolution; restrict direct pushes; allow only squash merges and enable
+      "Automatically delete head branches".
+- [ ] **Branches → release/***: same protections, plus allow the release workflow
+      to push tags.
+- [ ] **Tags → dsh-***: restrict creation/update/deletion to maintainers; a tag
+      push triggers the release workflow.
+- [ ] **Actions → General**: allow GitHub Actions; set workflow permissions to
+      read-only by default; allow `GITHUB_TOKEN` to create pull requests only
+      where required.
+- [ ] **Actions → Runners**: make the arm64 runners (`ubuntu-24.04-arm`) available
+      to the public/private repository as appropriate.
+- [ ] **Packages**: grant the release workflow `packages: write` (workflow
+      permissions do this) and protect the
+      `ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox` packages from deletion.
+- [ ] **Security**: enable CodeQL default setup **or** keep the advanced
+      `codeql.yml` workflow (not both), enable Dependabot alerts and
+      dependency review.
+- [ ] **Secrets/Variables**: none are needed for image publishing; the workflows
+      use `GITHUB_TOKEN`.

docs/main-image.md

@@ -0,0 +1,191 @@
+# The main DSH Web image
+
+This repository's primary artifact is a container image that packages
+[DeepSeek Harness](https://github.com/deepseek-ai/deepseek-harness) Web
+(`dsh web`) for Kubernetes and plain Docker. The [Dockerfile](../Dockerfile) at the
+repository root builds it; every version pin it uses lives in
+[versions.env](../versions.env).
+
+The image is image-first: it is the product, and the examples under
+[`examples/`](../examples/) are self-contained implementations that consume it.
+
+## What the build does
+
+The Dockerfile is a two-stage build:
+
+1. **Build stage** (`node:24-trixie`) clones DSH at the pinned git ref, installs
+   dependencies with pnpm, runs the production build, packages the `@deepseek-ai/dsh`
+   CLI with `pnpm pack`, and installs its production dependencies with npm.
+2. **Runtime stage** (`node:24-trixie-slim`) copies `/opt/dsh` to `/app`, adds the
+   CLI tools DSH agents commonly use (`git`, `ripgrep`, `jq`, `yq`, `curl`, `wget`,
+   `gh`, `tini`, `uv`), and starts `dsh web` through a small entrypoint.
+
+## Build it
+
+```bash
+make image          # canonical: builds the DSH Web image, no push
+```
+
+`make image` reads [versions.env](../versions.env) and passes the pins as build args.
+To reproduce the equivalent by hand:
+
+```bash
+docker build \
+  --build-arg DSH_VERSION=dsh-v0.2.1-rc.3 \
+  --build-arg RELEASE_REVISION=r4 \
+  --build-arg PNPM_VERSION=11.28.5 \
+  --build-arg VCS_REF="$(git rev-parse --short HEAD)" \
+  -t ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.3-r4 .
+```
+
+### Build args
+
+| Arg | Default / source | Purpose |
+| --- | --- | --- |
+| `DSH_REPO` | `https://github.com/deepseek-ai/deepseek-harness.git` | Upstream DSH repository to clone. |
+| `DSH_VERSION` | `DSH_VERSION` in [versions.env](../versions.env) | Upstream DSH git tag/ref to package; recorded as `org.opencontainers.image.version`. |
+| `RELEASE_REVISION` | `RELEASE_REVISION` in [versions.env](../versions.env) | Repository revision suffix (`rN`); the release identity is `DSH_VERSION-RELEASE_REVISION`, recorded in the `io.sredevopsorg.release.revision` label. See [versioning](versioning.md). |
+| `PNPM_VERSION` | `PNPM_VERSION` in [versions.env](../versions.env) | pnpm version activated with corepack in both stages. |
+| `VCS_REF` | `git rev-parse --short HEAD` (via `make image`) | Source revision recorded for traceability. |
+| `NODE_BUILD_IMAGE` | `docker.io/node:24-trixie` | Build-stage base image. |
+| `NODE_RUNTIME_IMAGE` | `docker.io/node:24-trixie-slim` | Runtime-stage base image. |
+
+Never hard-code a version outside [versions.env](../versions.env):
+`./scripts/check-versions.sh` (and `make check`) fails when a pin drifts.
+
+## Runtime contract
+
+### Entrypoint
+
+The entrypoint is `tini -- /usr/local/bin/dsh-entrypoint`:
+
+1. `tini` runs as PID 1 and reaps children/forwards signals.
+2. The shell entrypoint applies defaults, derives a bind address when `DSH_HOST` is
+   empty (the pod/container's first non-loopback IPv4), builds the
+   `dsh web` command line, and `exec`s it so signals reach the Node process.
+3. `localhost` and `127.0.0.1` are always added to DSH's trusted-host list; each
+   `DSH_TRUSTED_HOSTS` entry is added as an extra `--trusted-host`.
+
+### Environment variables
+
+| Variable | Default | Purpose |
+| --- | --- | --- |
+| `DSH_PORT` | `3080` | Port DSH Web listens on inside the container. |
+| `DSH_HOST` | auto-detected non-loopback IPv4 | Bind address. Leave empty in Kubernetes so the pod IP is used automatically. |
+| `DSH_PUBLIC_URL` | `http://localhost:${DSH_PORT}` | Public base URL used to build links and the launch-token URL printed in the logs. Set it when the container is published on a different host port or behind a proxy. |
+| `DSH_TRUSTED_HOSTS` | empty | Extra `Host`/`Origin` allow-list entries, comma- or space-separated. `localhost`/`127.0.0.1` are always trusted. Required when a proxy forwards the browser's `Host`. |
+| `DEEPSEEK_API_KEY` | empty | Provider credential read by DSH. Inject it with `-e`/`envFrom`; never bake it into the image. Only model calls fail when it is missing. |
+| `DSH_HOME` | `/home/node/.dsh` | DSH state directory (conversations, sessions, config, credentials). Mount a volume here to persist it. |
+
+The image also sets `NODE_ENV=production`, `HOME=/home/node`, and a `PATH` that
+includes `/app/node_modules/.bin`.
+
+### Provider credentials
+
+DSH resolves provider API keys from the environment when no stored credential
+exists. The packaged provider catalog maps each provider to its standard
+environment name. Commonly used names:
+
+`DEEPSEEK_API_KEY`, `OPENROUTER_API_KEY`, `GEMINI_API_KEY`, `NVIDIA_API_KEY`,
+`OPENAI_API_KEY`, `ANTHROPIC_API_KEY`, `GROQ_API_KEY`, `XAI_API_KEY`,
+`MISTRAL_API_KEY`, `TOGETHER_API_KEY`, `CEREBRAS_API_KEY`,
+`AI_GATEWAY_API_KEY`, `HF_TOKEN`.
+
+Use `GEMINI_API_KEY` for Google Gemini (not `GOOGLE_API_KEY`), `HF_TOKEN` for
+Hugging Face, and `AI_GATEWAY_API_KEY` for the Vercel AI Gateway. Inject keys
+with `-e`/`--env-file` in Docker or a Secret + `envFrom` in Kubernetes; never
+bake them into the image.
+
+A key saved through DSH's credential store (`$DSH_HOME/.credentials.yaml`) wins
+over the environment. The
+[agents-as-a-service example](../examples/dsh-agents-as-a-service/docs/optional-hardening.md)
+documents the optional `dsh-provider-keys-extra` Secret and the pod-refresh
+procedure.
+
+### Ports, volumes and signals
+
+| Item | Value | Notes |
+| --- | --- | --- |
+| Exposed port | `3080/tcp` | `EXPOSE 3080`; one port serves the UI, assets, API, SSE and WebSocket traffic. |
+| State volume | `/home/node/.dsh` | Declared with `VOLUME`; use a named volume (Docker) or PVC (Kubernetes). |
+| Working directory | `/workspace` | The agent workspace; mount a volume here if agents should keep files. |
+| Stop signal | `SIGTERM` | `tini` forwards it to `dsh web`; allow a graceful shutdown period. |
+| User | `node`, UID/GID `1000` | The process is non-root. A PVC mounted at `DSH_HOME` must be writable by UID 1000. |
+
+### Health probes
+
+`/` is **not** a health endpoint: DSH returns `401` until a browser completes the
+launch-token handshake. Probe `/favicon.svg` instead — it is unauthenticated and
+served by the web layer, so it proves the HTTP server is up without triggering auth.
+
+```yaml
+startupProbe:
+  httpGet: {path: /favicon.svg, port: 3080}
+  periodSeconds: 5
+  failureThreshold: 24
+readinessProbe:
+  httpGet: {path: /favicon.svg, port: 3080}
+  periodSeconds: 5
+livenessProbe:
+  httpGet: {path: /favicon.svg, port: 3080}
+  periodSeconds: 15
+```
+
+The shipped templates use exactly this shape; see
+[`examples/minimal-single-tenant/manifests/sandbox-template.yaml`](../examples/minimal-single-tenant/manifests/sandbox-template.yaml).
+A `startupProbe` is important because plugin activation (or the first start of a
+large sandbox) can exceed a default liveness budget.
+
+### Launch token
+
+DSH prints its one-time launch URL to the logs:
+
+```
+dsh web: http://<host>:${DSH_PORT}/?token=...
+```
+
+Open that URL once to obtain DSH's auth cookie. After that the UI works at the bare
+URL; without the cookie `/` answers `401` by design. The
+[agents-as-a-service gateway](../examples/dsh-agents-as-a-service/gateway/) performs
+this handshake server-side so browsers never see the token.
+
+## Published image names and tags
+
+Registry layout: the main image is the repository itself, and every example
+component is a nested package below it:
+
+```
+ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox                        # main DSH Web image
+ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox/dsh-agents-as-a-service/gateway   # example component
+```
+
+The main image is published multi-arch (`linux/amd64`, `linux/arm64`) to
+GitHub Container Registry:
+
+| Tag | Meaning |
+| --- | --- |
+| `dsh-v0.2.1-rc.3-r4` | Current release identity. **Immutable**: once published it never moves. |
+| `latest` | Most recent release; points at the same digest as the current identity. |
+| `main` | Development channel rebuilt from every push to `main`; not a release, not for production. |
+| `dsh-v0.2.1-rc.3` | Legacy tag published before the release-identity scheme existed. Do not use it for new deployments; see the migration table in the [root README](../README.md). |
+
+Release identities, channels and rollback rules are defined in
+[versioning](versioning.md). Tags are immutable, so production deployments should
+pin a digest:
+
+```bash
+docker buildx imagetools inspect ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.3-r4
+# ... pin the digest in your deployment manifests:
+#   image: ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox@sha256:<digest>
+```
+
+## Verifying an image
+
+```bash
+docker inspect ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.3-r4 \
+  --format '{{json .Config.Labels}}'
+# org.opencontainers.image.title / .version / .source
+```
+
+Release builds also publish SBOM and provenance attestations from the release
+workflow (see [SECURITY.md](../SECURITY.md) and [gitflow](gitflow.md)).

docs/versioning.md

@@ -0,0 +1,163 @@
+# Versioning, releases and changelog
+
+[versions.env](../versions.env) is the **single source of truth** for the DSH ref,
+the repository revision, the pnpm version, the control-plane component versions
+and the image names. Nothing else may hard-code a version:
+[scripts/check-versions.sh](../scripts/check-versions.sh) fails when a pin drifts,
+and it also verifies that prose mentions only the current release identity or its
+base DSH tag.
+
+## Release identity
+
+```
+release identity = DSH_VERSION + optional "-" + RELEASE_REVISION
+```
+
+| Piece | Meaning |
+| --- | --- |
+| `DSH_VERSION` | The upstream DeepSeek Harness git ref being packaged, e.g. `dsh-v0.2.1-rc.3`. It mirrors upstream's own tag, which is what "mirrored-DSH scheme" means. |
+| `RELEASE_REVISION` | An optional repository revision at that DSH ref: empty for the first release, `rN` (`N >= 2`) for a repository-only re-release. |
+
+Examples:
+
+- `DSH_VERSION=dsh-v0.2.1-rc.3`, `RELEASE_REVISION=` → identity `dsh-v0.2.1-rc.3`
+  (first release at that upstream ref).
+- `DSH_VERSION=dsh-v0.2.1-rc.3`, `RELEASE_REVISION=r4` → identity
+  `dsh-v0.2.1-rc.3-r4` (documentation, CI or gateway changes on top of the same
+  upstream DSH; no DSH upgrade).
+
+A DSH upgrade produces a new base identity (for example the next upstream ref
+with an empty revision); a repository-only change at the same DSH ref increments
+`rN`.
+
+## Why the current identity is `dsh-v0.2.1-rc.3-r4`
+
+The image tag `dsh-v0.2.1-rc.3` was already published to GHCR for an earlier
+repository state. **Container tags are immutable** in this project: re-pushing a
+tag would silently change what an existing deployment runs. The mirrored-DSH
+scheme therefore starts its first identity at `-r2`: the plain tag is
+conceptually revision 1 and is taken, so the first publishable repository
+revision at the same upstream ref is `r2`.
+
+The identity is stored in [versions.env](../versions.env) and consumed everywhere:
+the Dockerfile label, the example manifests, the Makefile and the release
+workflow. The legacy `dsh-v0.2.1-rc.3` tag remains published but is not updated;
+new deployments use `dsh-v0.2.1-rc.3-r4`.
+
+The gateway image moved from the repository-level `:gateway` tag to a nested
+package (`<repository>/dsh-agents-as-a-service/gateway`). The release workflow
+also republishes the legacy `<repository>:gateway` tag as a deprecated
+compatibility alias; it may be removed in a later release, so deployments
+should pin the nested package.
+
+## Channels
+
+| Channel | Image tag | Meaning |
+| --- | --- | --- |
+| Release | `dsh-v0.2.1-rc.3-r4` | The current immutable release identity. What production should pin (preferably by digest). |
+| `latest` | `latest` | Alias for the most recent release; moves only when a new release is published. |
+| `main` | `main` | Development channel, rebuilt from every push to `main`. Never treat it as a release; it exists so `main` can be tested. |
+
+The same channels exist for every published package, including the nested
+example component image.
+
+## Compatibility matrix
+
+Values from [versions.env](../versions.env) at the current identity:
+
+| Component | Pin | Source |
+| --- | --- | --- |
+| Upstream DSH source | `DSH_REPO` | [versions.env](../versions.env) |
+| DSH ref | `dsh-v0.2.1-rc.3` | `DSH_VERSION` |
+| Repository revision | `r4` | `RELEASE_REVISION` |
+| pnpm | `11.28.5` | `PNPM_VERSION` |
+| agent-sandbox (CRDs) | `v1.0.7` | `AGENT_SANDBOX_VERSION`, used by the examples and CI dry-run |
+| Kubernetes Gateway API | `v1.2.1` | `GATEWAY_API_VERSION`, used by the SSO exposure variant |
+| oauth2-proxy | `quay.io/oauth2-proxy/oauth2-proxy:v7.15.5` | `OAUTH2_PROXY_IMAGE` |
+| Main image | `ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox` | `GHCR_IMAGE` |
+| Gateway image | `ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox/dsh-agents-as-a-service/gateway` | `GATEWAY_IMAGE`, nested below `GHCR_IMAGE` |
+
+Example component images are always nested below the main package:
+`<GHCR_IMAGE>/<example>/<component>`. `check-versions.sh` rejects an unrelated
+top-level package.
+
+## Bumping versions
+
+```bash
+make set-version DSH_VERSION=dsh-vX.Y.Z RELEASE_REVISION=rN
+make check
+```
+
+`set-version` updates [versions.env](../versions.env) through
+[scripts/set-version.sh](../scripts/set-version.sh) and leaves every consuming
+file to derive from it. Never edit the Dockerfile, manifests, Makefile or
+workflows with a literal version.
+
+- New upstream DSH ref: change `DSH_VERSION` and clear `RELEASE_REVISION`.
+- Repository-only change at the same DSH ref: keep `DSH_VERSION`, set
+  `RELEASE_REVISION=r(N+1)`.
+
+## Release checklist
+
+1. `main` is green and `make check`, `make test`, `make lint` pass locally.
+2. `make image` and `make gateway` build; smoke-test the images.
+3. Bump the pins with `make set-version` (commit that change through a PR).
+4. `make release-dry-run` — verifies the identity, prints the image names, checks
+   the tag does not already exist, and previews the generated notes.
+5. Create and push the annotated `dsh-*` release tag (or dispatch
+   `release.yaml` with an existing tag). The workflow validates that the tag
+   matches [versions.env](../versions.env).
+6. The workflow builds and pushes multi-arch images for the main image and the
+   example components (the identity tag plus `latest`), creates the GitHub
+   Release from the git-cliff notes, records the published digests, and opens a
+   `chore(changelog)` PR that refreshes `CHANGELOG.md` on `main`.
+7. Merge the changelog PR. Verify:
+   `docker buildx imagetools inspect <image>:<identity>` shows both platforms,
+   and the GitHub Release references the tag and the digest.
+8. Announce the identity and the digest; deployments pin the digest.
+
+## Rollback
+
+Tags and release identities are **immutable**, so a bad release is never re-tagged
+or deleted. Fix forward:
+
+1. Fix the problem on a `hotfix/<slug>` branch (see [gitflow](gitflow.md)).
+2. Publish a new identity with the next revision, `-r(N+1)`, at the same
+   `DSH_VERSION`.
+3. Point deployments at the new digest; keep the broken tag for audit history.
+
+Emergency rollback to the previous release is also a re-deploy of a **previous
+digest**, not a move of `latest`.
+
+## Changelog
+
+`CHANGELOG.md` is generated by [git-cliff](https://git-cliff.org) from
+Conventional Commits, configured in [cliff.toml](../cliff.toml):
+
+```bash
+make changelog   # regenerate CHANGELOG.md locally
+```
+
+- Do not edit `CHANGELOG.md` by hand; the release workflow regenerates it and opens a PR to refresh it on `main`.
+- Commit messages and PR titles must be Conventional Commits so they are grouped
+  correctly (Added / Fixed / Changed / Documentation / Build / CI / Tests /
+  Maintenance).
+- The changelog groups commits since the previous `dsh-*` tag; release notes use
+  the same rendering.
+- The changelog is excluded from the version-token check because it records
+  historical identities on purpose.
+
+## Digest pinning
+
+Release identities are mutable only in theory; deployments should still pin the
+resolved digest for reproducibility and supply-chain safety:
+
+```bash
+docker buildx imagetools inspect ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.3-r4
+# then, in the deployment:
+#   image: ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox@sha256:<digest>
+```
+
+The example manifests use the identity tag so they stay readable and upgrade with
+`versions.env`; production overlays should pin the digest. Release images carry
+SBOM and provenance attestations (see [SECURITY.md](../SECURITY.md)).

examples/README.md

@@ -0,0 +1,55 @@
+# Examples
+
+Every implementation in this repository is a self-contained example: one
+directory, plain `kubectl`, an end-to-end README, and a cleanup command.
+Examples consume the [main DSH Web image](../docs/main-image.md); they are
+reference material, not libraries.
+
+| Example | What it demonstrates | Needs |
+| --- | --- | --- |
+| [`examples/dsh-agents-as-a-service/`](dsh-agents-as-a-service/) | The full multi-tenant platform pattern: one `SandboxTemplate` with per-user PVCs, a warm pool, one ~10-line `SandboxClaim` per user, suspend-when-idle / wake-on-return, and a browser gateway with signup, `HttpOnly` sessions, an HTTP + WebSocket proxy and two exposure variants (Ingress, or Gateway API + GitHub SSO). | agent-sandbox with extensions; kind for the e2e script. |
+| [`examples/minimal-single-tenant/`](minimal-single-tenant/) | The smallest useful setup: a single `SandboxTemplate` and one `SandboxClaim`, no gateway — reach DSH Web with a launch-token URL through `kubectl port-forward`. | agent-sandbox with extensions. |
+
+The multi-tenant example also documents opt-in gVisor, `nodeSelector`,
+NetworkPolicy and extra provider-key hardening in
+[optional hardening](dsh-agents-as-a-service/docs/optional-hardening.md).
+
+## The example contract (short version)
+
+Full rules: [docs/examples.md](../docs/examples.md). `scripts/check-examples.sh`
+enforces the layout, and `make check` runs it.
+
+```
+examples/<name>/
++-- README.md                  # walkthrough: prerequisites, steps, troubleshooting, cleanup
++-- manifests/                 # NN-*.yaml, applied with plain kubectl
+|   +-- optional/<feature>/    # optional opt-in manifests...
+|   +-- optional/README.md     # ...required whenever optional/ exists
+|   +-- exposure/<variant>/    # optional per-variant manifests...
+|   +-- exposure/README.md     # ...required whenever exposure/ exists
++-- scripts/                   # optional executable, idempotent, self-cleaning *.sh
++-- docs/                      # optional architecture/ADR material
++-- <component>/               # optional component with Dockerfile + README + tests
+```
+
+- Secrets never ship populated: use `*.yaml.example` files with placeholders.
+- Manifests are numbered (`00-`, `10-`, ...) and read as an ordered walkthrough.
+- Component images are published nested below the main image:
+  `<registry>/<owner>/<repo>/<example>/<component>`.
+- Every example must be listed above with its literal `examples/<name>/` path.
+- Scripts under `scripts/` must be executable, idempotent and clean up after
+  themselves.
+
+## Running an example
+
+```bash
+# e.g. the multi-tenant platform example
+kubectl apply -f examples/dsh-agents-as-a-service/manifests/
+
+# or run the whole walkthrough (kind + agent-sandbox required) and let it clean up
+examples/dsh-agents-as-a-service/scripts/e2e-kind.sh
+```
+
+`kubectl apply -f manifests/` is non-recursive: `optional/` and `exposure/`
+subdirectories are applied explicitly. Each example README has the exact
+prerequisites, optional hardening, exposure options and teardown.

examples/dsh-agents-as-a-service/00-prereqs.yaml

@@ -1,27 +0,0 @@
-# DSH "Agents as a Service" — prerequisites: namespace + shared provider key.
-#
-# The dsh-provider-keys Secret is deliberately NOT committed with a usable
-# value. DEEPSEEK_API_KEY reaches every tenant sandbox (injected via envFrom
-# on the SandboxTemplate, stamped before any user exists — a warm-pool
-# constraint), so a real key committed here would be shared by every install
-# of this example. Generate a fresh value per install (README step 1;
-# run-test-kind.sh uses a throwaway):
-#
-#   kubectl -n dsh-demo create secret generic dsh-provider-keys \
-#     --from-literal=DEEPSEEK_API_KEY="sk-..."
-#
-# All the infrastructure in this example works without a real key; only
-# actual model calls need one.
-apiVersion: v1
-kind: Namespace
-metadata:
-  name: dsh-demo
----
-apiVersion: v1
-kind: Secret
-metadata:
-  name: dsh-provider-keys
-  namespace: dsh-demo
-type: Opaque
-# stringData:
-#   DEEPSEEK_API_KEY: "sk-your-key-here"

examples/dsh-agents-as-a-service/README.md

@@ -2,20 +2,45 @@
 
 This example distills the upstream
 [hermes-agents-as-a-service](https://github.com/kubernetes-sigs/agent-sandbox/tree/main/examples/hermes-agents-as-a-service)
-platform pattern into pure agent-sandbox resources + kubectl, running **DeepSeek Harness Web
+platform pattern into pure agent-sandbox resources + kubectl, running **DeepSeek
-(DSH)** instead of Hermes. Every user of such a platform gets a personal, long-lived DSH Web
+Harness Web (DSH)** instead of Hermes. Every user of such a platform gets a
-instance that is **provisioned in ~2 seconds from a warm pool, suspended when idle to save
+personal, long-lived DSH Web instance that is **provisioned in ~2 seconds from a
-cost, and woken transparently when the user returns** — with all state (conversations,
+warm pool, suspended when idle to save cost, and woken transparently when the
-sessions, config) surviving on a per-user PVC at `/home/node/.dsh`.
+user returns** — with all state (conversations, sessions, config) surviving on a
+per-user PVC at `/home/node/.dsh`.
 
-It ships in two layers:
+It ships in three layers:
 
-1. **The resource layer** (steps 1–7): pure manifests + kubectl, so every mechanism is visible.
+1. **The resource layer** (steps 1–7): pure manifests + kubectl, so every
-2. **The service layer** (step 8): a small included **gateway** (`gateway/`) that makes the
+   mechanism is visible.
-   platform browser-usable — a signup page/API, `HttpOnly` cookie sessions, a `/u/{user}/**`
+2. **The service layer** (step 8): a small included **gateway** (`gateway/`) that
-   proxy for HTTP **and WebSocket** that transparently **wakes suspended instances on
+   makes the platform browser-usable — a signup page/API, `HttpOnly` cookie
-   connect**, and an idle sweeper that suspends them again. The gateway performs the DSH
+   sessions, a `/u/{user}/**` proxy for HTTP **and WebSocket** that transparently
-   launch-token handshake server-side, so the browser never sees the token.
+   **wakes suspended instances on connect**, and an idle sweeper that suspends
+   them again. The gateway performs the DSH launch-token handshake server-side,
+   so the browser never sees the token.
+3. **The exposure layer** (step 9): choose exactly one way in — a plain Traefik
+   Ingress, or Gateway API + oauth2-proxy (GitHub SSO).
+
+All manifests live under [`manifests/`](manifests/):
+
+```
+manifests/
++-- 00-prereqs.yaml              # namespace + empty provider-key Secret
++-- 10-sandboxtemplate.yaml      # the DSH Web blueprint
++-- 20-sandboxwarmpool.yaml      # 2 pre-warmed spares
++-- 30-claim-alice.yaml          # one user
++-- 40-claim-rejected.yaml       # negative demo: env injection rejected
++-- 50-gateway.yaml              # Deployment/RBAC/Service for the gateway
++-- optional/
+|   +-- README.md                # opt-in manifests, applied by path
+|   +-- network-policy/10-sandbox-networkpolicy.yaml
++-- exposure/
+    +-- README.md                 # the two exposure variants, when to use which
+    +-- ingress/60-ingress.yaml
+    +-- ingress/61-networkpolicy.yaml
+    +-- gateway-api-sso/70-gateway.yaml ... 75-networkpolicies.yaml
+```
 
 What it demonstrates, feature by feature:
 
@@ -34,20 +59,23 @@ What it demonstrates, feature by feature:
 
 - **Multi-arch**: the DSH image is built for amd64 and arm64, so there is no
   `kubernetes.io/arch: amd64` nodeSelector.
-- **Single port**: DSH Web serves everything on `3080`; the gateway proxies to one upstream
+- **Single port**: DSH Web serves everything on `3080`; the gateway proxies to one
-  instead of splitting `/v1/*` (API) from the dashboard.
+  upstream instead of splitting `/v1/*` (API) from the dashboard.
-- **One shared secret**: only `DEEPSEEK_API_KEY` is injected (via `envFrom`); there is no
+- **Shared provider keys**: `DEEPSEEK_API_KEY` plus any keys in the optional
-  dashboard basic-auth, session-cookie secret, or API-server key.
+  `dsh-provider-keys-extra` Secret are injected via `envFrom` into every
-- **Launch-token handshake**: DSH gates `/` behind a token it prints only in its logs. The
+  sandbox. There is no per-tenant key, dashboard basic-auth, session-cookie
-  gateway reads it, performs the handshake, and keeps the resulting auth cookie server-side;
+  secret, or API-server key.
-  the browser authenticates to the gateway with its own cookie. See
+- **Launch-token handshake**: DSH gates `/` behind a token it prints only in its
-  [How the DSH handshake works](#how-the-dsh-handshake-works).
+  logs. The gateway reads it, performs the handshake, and keeps the resulting
-- **Host allow-list**: DSH rejects unknown `Host` headers. The gateway forwards the browser's
+  auth cookie server-side; the browser authenticates to the gateway with its own
-  `Host`, so the public hostname must be added to `DSH_TRUSTED_HOSTS` in the template.
+  cookie. See [How the DSH handshake works](#how-the-dsh-handshake-works).
-- **Probes target `/favicon.svg`**: `/` returns `401` without the launch token, so a probe on
+- **Host allow-list**: DSH rejects unknown `Host` headers. The gateway forwards
-  `/` crash-loops the pod. `/favicon.svg` is unauthenticated, and a `startupProbe` gates
+  the browser's `Host`, so the public hostname must be added to
-  liveness/readiness so a slow cold start (plugin activation, or a resumed sandbox) is not
+  `DSH_TRUSTED_HOSTS` in the template.
-  restarted mid-boot.
+- **Probes target `/favicon.svg`**: `/` returns `401` without the launch token, so
+  a probe on `/` crash-loops the pod. `/favicon.svg` is unauthenticated, and a
+  `startupProbe` gates liveness/readiness so a slow cold start (plugin
+  activation, or a resumed sandbox) is not restarted mid-boot.
 
 ## Prerequisites
 
@@ -55,43 +83,74 @@ What it demonstrates, feature by feature:
 - agent-sandbox with extensions installed:
 
   ```bash
-  VERSION=v1.0.7
+  VERSION=v1.0.7   # AGENT_SANDBOX_VERSION in versions.env
-  kubectl apply -f https://github.com/kubernetes-sigs/agent-sandbox/releases/download/${VERSION}/sandbox-with-extensions.yaml
+  kubectl apply -f https://github.com/kubernetes-sigs/agent-sandbox/releases/download/$VERSION/sandbox-with-extensions.yaml
   kubectl -n agent-sandbox-system rollout status deployment --timeout=180s
   ```
 
-Or run everything below in one shot with `./run-test-kind.sh` (expects a kind cluster + the
+  For step 9's SSO variant you additionally need the Gateway API CRDs and a
-manifest above already applied; it creates and deletes the namespace itself).
+  Gateway implementation (`gatewayClassName: traefik` in the manifests); see the
+  [exposure README](manifests/exposure/README.md).
+
+- Optional: run the whole resource + gateway walkthrough in one shot with
+  [`scripts/e2e-kind.sh`](scripts/e2e-kind.sh). It expects a kind cluster with
+  agent-sandbox installed, then creates and deletes the `dsh-demo` namespace
+  itself. It stops after the gateway layer (step 8); exposure is not applied.
 
 ## 1. Install the platform resources
 
-First the namespace, then the shared provider key. The key reaches **every** tenant sandbox
+First the namespace, then the shared provider keys. The keys reach **every**
-(a warm-pool constraint: pod env is stamped before any user exists), so it is **never
+tenant sandbox (a warm-pool constraint: pod env is stamped before any user
-committed** — generate a fresh value per install:
+exists), so they are **never committed** — generate fresh values per install.
+`00-prereqs.yaml` already creates the empty `dsh-provider-keys` Secret, so use
+an upsert:
 
 ```bash
-kubectl apply -f 00-prereqs.yaml
+kubectl apply -f manifests/00-prereqs.yaml
 kubectl -n dsh-demo create secret generic dsh-provider-keys \
-  --from-literal=DEEPSEEK_API_KEY="sk-..."
+  --from-literal=DEEPSEEK_API_KEY="sk-..." \
-kubectl apply -f 10-sandboxtemplate.yaml -f 20-sandboxwarmpool.yaml
+  --dry-run=client -o yaml | kubectl apply -f -
 ```
 
-Watch the two warm spares boot (first time pulls the image — subsequent operations never pay
+Optional: additional providers (OpenRouter, Gemini, NVIDIA, OpenAI, Anthropic,
-that again; that is the point of the pool):
+...) go in a second Secret. It is referenced with `optional: true`, so the
+sandboxes start without it, and every key becomes an env var:
+
+```bash
+kubectl -n dsh-demo create secret generic dsh-provider-keys-extra \
+  --from-literal=OPENROUTER_API_KEY="sk-or-..." \
+  --from-literal=GEMINI_API_KEY="..." \
+  --from-literal=NVIDIA_API_KEY="nvapi-..." \
+  --dry-run=client -o yaml | kubectl apply -f -
+```
+
+Create both Secrets **before** the template/warm pool. A later Secret change
+does not update running pods: delete the warm-pool spares and recreate claimed
+pods to pick up new keys. Keys are shared by all tenants; a key saved in DSH's
+credential store wins over env. See
+[optional hardening](docs/optional-hardening.md) for the full env-name list and
+the refresh procedure.
+
+```bash
+kubectl apply -f manifests/10-sandboxtemplate.yaml -f manifests/20-sandboxwarmpool.yaml
+```
+
+Watch the two warm spares boot (first time pulls the image — subsequent operations
+never pay that again; that is the point of the pool):
 
 ```bash
 kubectl -n dsh-demo get sandboxes -l agents.x-k8s.io/warm-pool-sandbox -w
 ```
 
-Wait until both show `READY: True`. Each spare already has its PVC bound and DSH Web serving
+Wait until both show `READY: True`. Each spare already has its PVC bound and DSH
-on port `3080`.
+Web serving on port `3080`.
 
 ## 2. "Signup": claim an instance (~2s)
 
 A user signing up is one small claim — `warmPoolRef` plus a pod label:
 
 ```bash
-kubectl apply -f 30-claim-alice.yaml
+kubectl apply -f manifests/30-claim-alice.yaml
 kubectl -n dsh-demo wait sandboxclaim dsh-alice --for=condition=Ready --timeout=60s
 ```
 
@@ -105,20 +164,21 @@ kubectl -n dsh-demo get sandboxes --show-labels
 
 Three things worth noticing:
 
-- **The sandbox keeps its pool-generated name** (`dsh-pool-…`), not the claim's name —
+- **The sandbox keeps its pool-generated name** (`dsh-pool-…`), not the claim's
-  adoption re-labels an existing warm sandbox rather than creating one. A platform must always
+  name — adoption re-labels an existing warm sandbox rather than creating one. A
-  resolve user → sandbox through `claim.status.sandbox.name`.
+  platform must always resolve user → sandbox through `claim.status.sandbox.name`.
-- The `agents.x-k8s.io/warm-pool-sandbox` label is **gone** from the adopted sandbox (it left
+- The `agents.x-k8s.io/warm-pool-sandbox` label is **gone** from the adopted
-  the pool's inventory), and the pool has already started replenishing back to 2 spares.
+  sandbox (it left the pool's inventory), and the pool has already started
+  replenishing back to 2 spares.
 - The pod carries the claim's `additionalPodMetadata` label
   (`sandbox.users.io/dsh-user=alice`), and
-  `kubectl -n dsh-demo get sandbox $SB -o jsonpath='{.status.serviceFQDN}'` shows the stable
+  `kubectl -n dsh-demo get sandbox $SB -o jsonpath='{.status.serviceFQDN}'` shows
-  DNS name the gateway proxies to.
+  the stable DNS name the gateway proxies to.
 
 ## 3. Talk to the instance
 
-DSH Web needs its launch token on first contact — a bare `/` returns `401`. The token is in the
+DSH Web needs its launch token on first contact — a bare `/` returns `401`. The
-pod logs:
+token is in the pod logs:
 
 ```bash
 kubectl -n dsh-demo logs "$SB" | grep -m1 '?token='
@@ -127,16 +187,16 @@ kubectl -n dsh-demo port-forward "pod/$SB" 18081:3080
 # open http://localhost:18081/?token=... (from the log line)
 ```
 
-> **Local port note:** DSH Web listens on `3080` **in-cluster**. If `3080` is already in use
+> **Local port note:** DSH Web listens on `3080` **in-cluster**. If `3080` is
-> on your workstation (e.g. by a local DSH), forward to a different local port (here `18081`),
+> already in use on your workstation (e.g. by a local DSH), forward to a
-> never `3080`. `localhost` is always in DSH's trusted-host list, so the forwarded request is
+> different local port (here `18081`), never `3080`. `localhost` is always in
-> accepted.
+> DSH's trusted-host list, so the forwarded request is accepted.
 
-> **Why the pod stays up:** this claim was applied by hand, so it carries no gateway ownership
+> **Why the pod stays up:** this claim was applied by hand, so it carries no
-> annotation (`aaas.example.com/managed-by`). The gateway's idle sweeper only suspends claims it
+> gateway ownership annotation (`aaas.example.com/managed-by`). The gateway's idle
-> created through `POST /users`; the resource-layer claims from these manifests are never
+> sweeper only suspends claims it created through `POST /users`; the resource-layer
-> touched. You can deploy the gateway (step 8) and still keep a sandbox you are port-forwarding
+> claims from these manifests are never touched. You can deploy the gateway
-> to.
+> (step 8) and still keep a sandbox you are port-forwarding to.
 
 ## 4. Write state on the PVC
 
@@ -161,20 +221,20 @@ kubectl -n dsh-demo wait sandbox "$SB" --for=condition=Ready --timeout=180s
 kubectl -n dsh-demo exec "$SB" -- cat /home/node/.dsh/marker.txt   # "remember me"
 ```
 
-> **Why resume works:** the pod template sets `fsGroupChangePolicy: OnRootMismatch`. DSH requires
+> **Why resume works:** the pod template sets `fsGroupChangePolicy: OnRootMismatch`.
-> its `.credentials.yaml` to be `0600`, while the kubelet's default fsGroup policy widens every
+> DSH requires its `.credentials.yaml` to be `0600`, while the kubelet's default
-> file to `0660` on each pod start — a resumed sandbox would crash-loop. See
+> fsGroup policy widens every file to `0660` on each pod start — a resumed sandbox
-> [Troubleshooting](#troubleshooting) for the one-time fix on sandboxes created before this
+> would crash-loop. See [Troubleshooting](#troubleshooting) for the one-time fix
-> setting existed.
+> on sandboxes created before this setting existed.
 
 ## 7. Injection policy rejects env-carrying claims
 
 ```bash
-kubectl apply -f 40-claim-rejected.yaml
+kubectl apply -f manifests/40-claim-rejected.yaml
 kubectl -n dsh-demo get sandboxclaim dsh-mallory \
   -o jsonpath='{.status.conditions[?(@.type=="Ready")].reason}'
 # EnvVarsInjectionRejected — the claim never bound a sandbox
-kubectl delete -f 40-claim-rejected.yaml
+kubectl delete -f manifests/40-claim-rejected.yaml
 ```
 
 ## 8. The gateway: signup, browser proxy, idle-suspend, wake-on-connect
@@ -182,59 +242,72 @@ kubectl delete -f 40-claim-rejected.yaml
 ### Deploy it
 
 ```bash
-# Published image (on kind, load it into the cluster; on a real cluster it is
+# Published image (on kind, load it into the cluster; on a real cluster the
-# pulled from GHCR):
+# kubelet pulls it from GHCR):
-docker pull ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway
+GW=ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox/dsh-agents-as-a-service/gateway:dsh-v0.2.1-rc.3-r4
-kind load docker-image ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway --name <kind-cluster>
+docker pull "$GW"
+kind load docker-image "$GW" --name <kind-cluster>
 
-# ... or build it locally and tag it exactly as 50-gateway.yaml expects:
+# ... or build it locally and tag it exactly as manifests/50-gateway.yaml
-docker build -t ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway gateway/
+# expects (make gateway builds dsh-aaas-gateway:dev):
-kind load docker-image ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway --name <kind-cluster>
+make gateway
+docker tag dsh-aaas-gateway:dev "$GW"
+kind load docker-image "$GW" --name <kind-cluster>
 
-kubectl apply -f 50-gateway.yaml
+kubectl apply -f manifests/50-gateway.yaml
 kubectl -n dsh-demo rollout status deploy/dsh-gateway --timeout=120s
 kubectl -n dsh-demo port-forward svc/dsh-gateway 18080:8080
 ```
 
 > The gateway binds `8080`; the local port-forward uses `18080` and never `3080`.
 >
-> **Re-deploying after a new image?** The workflow publishes the mutable `:gateway` tag and the
+> **Image pull policy.** `manifests/50-gateway.yaml` uses
-> Deployment uses `imagePullPolicy: IfNotPresent`, so a node that already cached the tag keeps
+> `imagePullPolicy: IfNotPresent` with the release identity, so a locally built
-> the old image across `kubectl apply`/`rollout restart`. Pin the digest for a reproducible
+> image must be loaded into the cluster under exactly that name (kind:
-> rollout (the workflow's `Inspect image` step and `docker buildx imagetools inspect` both show
+> `kind load`). A node that already cached a different tag is the usual cause of
-> it):
+> "my new build is not running"; pin the digest for a reproducible rollout:
 >
 > ```bash
 > kubectl -n dsh-demo set image deploy/dsh-gateway \
->   gateway=ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox@sha256:<digest>
+>   gateway=ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox/dsh-agents-as-a-service/gateway@sha256:<digest>
 > kubectl -n dsh-demo rollout status deploy/dsh-gateway --timeout=120s
 > ```
 >
-> **Applying over an existing install?** Run `kubectl diff -f 10-sandboxtemplate.yaml`
+> **Applying over an existing install?** Run
-> first. Cluster-specific fields such as `nodeAffinity` and the warm-pool replica count are
+> `kubectl diff -f manifests/10-sandboxtemplate.yaml` first. Cluster-specific
-> intentionally not in the repo manifests; preserve them with a targeted patch instead of a
+> fields such as `nodeAffinity` and the warm-pool replica count are intentionally
+> not in the repo manifests; preserve them with a targeted patch instead of a
 > blind apply. Moving the probes to `/favicon.svg` is the crash-loop fix.
 >
-> The template also sets `fsGroupChangePolicy: OnRootMismatch` (see the note in step 6).
+> The template also sets `fsGroupChangePolicy: OnRootMismatch` (see the note in
-> Existing `Sandbox` objects snapshot their pod template, so a template apply does not update
+> step 6). Existing `Sandbox` objects snapshot their pod template, so a template
-> them: patch each sandbox's `spec.podTemplate.spec.securityContext.fsGroupChangePolicy` and
+> apply does not update them: patch each sandbox's
+> `spec.podTemplate.spec.securityContext.fsGroupChangePolicy` and
 > `chmod 600` its `.credentials.yaml`, or recreate it.
+>
+> The optional gVisor/`nodeSelector` fields are pod-spec changes too: existing
+> Sandboxes snapshot them, and warm-pool spares are not replaced by a template
+> edit. See [optional hardening](docs/optional-hardening.md) for the patch and
+> recreation commands. A provider-key Secret change likewise needs pod
+> recreation to take effect.
 
 ### Browser flow
 
-Open <http://localhost:18080>. The landing page has a one-field signup form. Enter `bob`, and
+Open <http://localhost:18080>. The landing page has a one-field signup form.
-the gateway:
+Enter `bob`, and the gateway:
 
 1. creates the `SandboxClaim` over the warm pool,
 2. waits for it to become `Ready`,
-3. sets an `HttpOnly`, `SameSite=Lax` cookie `dsh_gw_session=<user>:<token>` on the browser,
+3. sets an `HttpOnly`, `SameSite=Lax` cookie `dsh_gw_session=<user>:<token>` on
+   the browser,
 4. redirects to `/u/bob/`, where the DSH Web UI loads through the gateway.
 
-From then on every request under `/u/bob/` (assets, API calls, SSE, WebSocket) is proxied to
+From then on every request under `/u/bob/` (assets, API calls, SSE, WebSocket) is
-bob's sandbox. The DSH launch token and DSH's own auth cookie stay in the gateway; the browser
+proxied to bob's sandbox. The DSH launch token and DSH's own auth cookie stay in
-only holds the gateway cookie.
+the gateway; the browser only holds the gateway cookie.
 
-The same flow with `curl`, no JavaScript (the session cookie is the only credential):
+The same flow with `curl`, no JavaScript (the session cookie is the only
+credential):
 
 ```bash
 JAR=$(mktemp)
@@ -252,48 +325,53 @@ curl -s -b "$JAR" -H 'Origin: http://localhost:18080' -X DELETE http://localhost
 ```
 
 API clients that prefer bearer tokens can use `POST /users` with a JSON body
-(`{"user":"bob"}`) and the returned one-time token, `POST /login` to exchange a token for a
+(`{"user":"bob"}`) and the returned one-time token, `POST /login` to exchange a
-cookie, and `Authorization: Bearer <token>` on subsequent calls.
+token for a cookie, and `Authorization: Bearer <token>` on subsequent calls.
 
 ### Gateway API
 
 | Route | Purpose |
 | --- | --- |
 | `GET /healthz` | Liveness/readiness; no cluster access |
-| `GET /` | Landing page: signup, token login, logout |
+| `GET /` | Landing page: signup, token login, logout. With SSO it auto-provisions and connects instead. |
 | `POST /users` | Signup. JSON or form; `201` (JSON), `202` (waking), `303` (browser redirect), `409` if user exists; sets the session cookie |
 | `POST /login` | Exchange a bearer token for the session cookie |
 | `POST /logout` | Clear the session cookie |
+| `POST /recreate` | SSO only: delete the authenticated user's claim (wiping workspace data) and provision a fresh one; `303` to `/u/{user}/`. Cookie-authenticated calls must be same-origin. |
 | `GET /users/{user}` | Derived state (`Ready`/`Waking`/`Suspended`) |
 | `DELETE /users/{user}` | Delete claim (cascades sandbox + PVC) |
 | `GET /u/{user}` | `308` redirect to `/u/{user}/` |
 | `GET /u/{user}/**` | HTTP/SSE proxy to the user's DSH Web |
 | `WS /u/{user}/**` | WebSocket proxy to the user's DSH Web |
 
+The full API reference, configuration table, auth semantics and failure matrix
+live in the [gateway README](gateway/README.md).
+
 ### How the DSH handshake works
 
-DSH does not expose an API for its launch token; it prints a URL containing `?token=…` in the
+DSH does not expose an API for its launch token; it prints a URL containing
-pod logs. For each `(user, pod UID, Host)` the gateway:
+`?token=…` in the pod logs. For each `(user, pod UID, Host)` the gateway:
 
-1. resolves the claim → sandbox → pod (annotation `agents.x-k8s.io/pod-name`, or the sandbox
+1. resolves the claim → sandbox → pod (annotation `agents.x-k8s.io/pod-name`, or
-   name as pod name),
+   the sandbox name as pod name),
-2. reads the pod's logs (last `DSH_LOG_TAIL_LINES` lines) and parses the most recent
+2. reads the pod's logs (last `DSH_LOG_TAIL_LINES` lines) and parses the most
-   `dsh web: …?token=…` line,
+   recent `dsh web: …?token=…` line,
 3. requests `http://<serviceFQDN>:3080/?token=…` with the browser's `Host`,
 4. captures DSH's `dsh-auth-*` `Set-Cookie` response and caches it,
-5. injects that cookie (and strips the browser's `Cookie`/`Authorization` and any `?token=`)
+5. injects that cookie (and strips the browser's `Cookie`/`Authorization` and any
-   on every proxied HTTP and WebSocket request,
+   `?token=`) on every proxied HTTP and WebSocket request,
-6. refreshes the handshake once if DSH answers `401`, and drops the cached cookie when the
+6. refreshes the handshake once if DSH answers `401`, and drops the cached cookie
-   sandbox suspends or is deleted.
+   when the sandbox suspends or is deleted.
 
-This is why the gateway's RBAC includes `pods` `get`/`list` and `pods/log` `get`. It is also
+This is why the gateway's RBAC includes `pods` `get`/`list` and `pods/log`
-the most fragile part of the design; see [Limitations](#limitations).
+`get`. It is also the most fragile part of the design; see
+[Limitations](#limitations).
 
 ### DSH_TRUSTED_HOSTS
 
-DSH rejects requests whose `Host` is not allow-listed (`localhost` and `127.0.0.1` are always
+DSH rejects requests whose `Host` is not allow-listed (`localhost` and
-trusted). Because the gateway forwards the browser's `Host`, set the public hostname in the
+`127.0.0.1` are always trusted). Because the gateway forwards the browser's
-template:
+`Host`, set the public hostname in the template:
 
 ```yaml
 env:
@@ -301,36 +379,184 @@ env:
     value: "dsh.example.com"   # comma or space separated; empty for port-forward only
 ```
 
-The same applies to a local `docker run`: the printed token URL uses `DSH_PUBLIC_URL` if set,
+The same applies to a local `docker run`: the printed token URL uses
-otherwise `http://localhost:${DSH_PORT}`.
+`DSH_PUBLIC_URL` if set, otherwise `http://localhost:<DSH_PORT>`.
 
 ### WebSocket
 
-The gateway is a Starlette ASGI app and proxies WebSocket upgrades with a bidirectional pump, so
+The gateway is a Starlette ASGI app and proxies WebSocket upgrades with a
-the DSH web GUI is fully interactive. Requirements:
+bidirectional pump, so the DSH web GUI is fully interactive. Requirements:
 
-- the ingress/load balancer in front of the gateway must pass `Upgrade`/`Connection` headers;
+- the ingress/load balancer in front of the gateway must pass `Upgrade`/`Connection`
-  `60-ingress.yaml` is a starting point (Traefik handles upgrades by default),
+  headers; [`manifests/exposure/ingress/60-ingress.yaml`](manifests/exposure/ingress/60-ingress.yaml)
-- idle suspension is disabled for users with in-flight proxied requests or open WebSockets, so
+  is a starting point (Traefik handles upgrades by default),
-  a long-running chat stream is not cut off mid-turn,
+- idle suspension is disabled for users with in-flight proxied requests or open
-- the upstream upgrade dials the sandbox **pod IP**, forwards no `Host`/`Origin`, and performs
+  WebSockets, so a long-running chat stream is not cut off mid-turn,
-  the launch-token handshake under that same `pod-IP:3080` authority. DSH fences on `Host`
+- the upstream upgrade dials the sandbox **pod IP**, forwards no `Host`/`Origin`,
-  (only its bind address, loopback, or an allow-listed host passes) and binds its auth cookie to
+  and performs the launch-token handshake under that same `pod-IP:3080` authority.
-  the request authority (`payload.authority === authority`), while `websockets` derives `Host`
+  DSH fences on `Host` (only its bind address, loopback, or an allow-listed host
-  from the URI and cannot be overridden. A browser-host cookie or forwarded origin makes the
+  passes) and binds its auth cookie to the request authority
-  upgrade fail (`401`/`403`, surfaced as close `1011`), which the client retries forever as
+  (`payload.authority === authority`), while `websockets` derives `Host` from the
-  `[connection] connection lost, retry #N`,
+  URI and cannot be overridden. A browser-host cookie or forwarded origin makes
-- missing/invalid gateway auth is rejected right after the upgrade with close code `4401`
+  the upgrade fail (`401`/`403`, surfaced as close `1011`), which the client
-  (WebSocket auth has no HTTP `401` path); cross-origin or Origin-less upgrades with the cookie
+  retries forever as `[connection] connection lost, retry #N`,
-  are rejected the same way (CSWSH protection), so clients must send a matching `Origin`;
+- missing/invalid gateway auth is rejected right after the upgrade with close code
-  upstream bridging failures close with `1011`.
+  `4401` (WebSocket auth has no HTTP `401` path); cross-origin or Origin-less
+  upgrades with the cookie are rejected the same way (CSWSH protection), so
+  clients must send a matching `Origin`; upstream bridging failures close with
+  `1011`.
 
 ### Path routing
 
-Each user's DSH Web is served under `/u/<user>/`. DSH injects `<base href="./">` and uses
+Each user's DSH Web is served under `/u/<user>/`. DSH injects `<base href="./">`
-relative asset/API URLs, so the UI works under a path prefix without a per-user hostname or
+and uses relative asset/API URLs, so the UI works under a path prefix without a
-wildcard DNS. The gateway also rewrites absolute-path `Location` headers into `/u/<user>/…` and
+per-user hostname or wildcard DNS. The gateway also rewrites absolute-path
-redirects `/u/<user>` to the trailing-slash form with `308` so relative URLs resolve correctly.
+`Location` headers into `/u/<user>/…` and redirects `/u/<user>` to the
+trailing-slash form with `308` so relative URLs resolve correctly.
+
+## 9. Expose it: choose exactly one variant
+
+The base manifests expose nothing outside the cluster (`dsh-gateway` is a
+ClusterIP Service on port `8080`). Pick **one** variant — they are alternatives,
+not a stack. Details, commands and the switch procedure are in the
+[exposure README](manifests/exposure/README.md).
+
+> Apply the base resources first, then the variant **by path**. Do not use
+> `kubectl apply -R`: it would apply both variants and create two paths to the
+> same gateway, which is unsafe once SSO is enabled.
+
+Both variants also ship NetworkPolicies: `ingress/61-networkpolicy.yaml` limits
+gateway ingress to Traefik pods, and `gateway-api-sso/75-networkpolicies.yaml`
+limits the gateway to oauth2-proxy and oauth2-proxy egress to DNS, public HTTPS
+and the gateway. They are part of the variant; see the
+[exposure README](manifests/exposure/README.md) and
+[optional hardening](docs/optional-hardening.md).
+
+### Option A — plain Ingress (gateway's own session auth)
+
+```bash
+# Replace the dsh.example.com host and TLS Secret (or drop the tls: block for
+# plain HTTP), then:
+kubectl apply -f manifests/exposure/ingress/
+```
+
+1. Set `DSH_TRUSTED_HOSTS` in `manifests/10-sandboxtemplate.yaml` to the same
+   public host (the gateway forwards the browser's `Host`) and re-apply the
+   template.
+2. Set `COOKIE_SECURE=true` on the gateway once the Ingress serves HTTPS:
+   `kubectl -n dsh-demo set env deploy/dsh-gateway COOKIE_SECURE=true`.
+   (The base manifest keeps `false` so the plain-HTTP port-forward demo works.)
+3. Verify: `curl -sI https://<host>/healthz` returns `200`; sign up in a browser
+   at `https://<host>/`.
+4. `manifests/exposure/ingress/61-networkpolicy.yaml` is part of this variant:
+   it allows only Traefik pods to reach the gateway on `8080`. Adjust its
+   selector if your ingress controller uses a different pod label or
+   `hostNetwork`; if kubelet probes fail, see the hardening doc.
+
+Keep the router free of buffering/compression middlewares: they break WebSocket
+upgrades and streaming.
+
+### Option B — Gateway API + GitHub SSO (oauth2-proxy)
+
+`manifests/exposure/gateway-api-sso/` puts a TLS `Gateway` + `HTTPRoute` in
+front of **oauth2-proxy**, which authenticates the browser against GitHub
+(restricted to a configured organization) and forwards to the gateway with
+`X-Forwarded-User` set. The gateway trusts that header only when
+`AUTH_PROXY_HEADER` is set (SSO is **opt-in**).
+
+Prerequisites:
+
+- Gateway API CRDs and a Gateway implementation; the manifests assume
+  `gatewayClassName: traefik` (the CRD version is pinned as
+  `GATEWAY_API_VERSION` in `versions.env`).
+- A GitHub OAuth App whose homepage/callback match the public FQDN
+  (`https://<host>/` and `https://<host>/oauth2/callback`).
+- The oauth2-proxy credentials Secret (template:
+  `73-oauth2-proxy-secret.yaml.example`) and a TLS Secret for the Gateway
+  listener (template: `74-tls-secret.yaml.example`).
+
+Steps:
+
+```bash
+# 1. Real Secrets; the committed *.yaml.example files are templates only.
+kubectl -n dsh-demo create secret generic oauth2-proxy \
+  --from-literal=client-id='<GitHub OAuth App client ID>' \
+  --from-literal=client-secret='<GitHub OAuth App client secret>' \
+  --from-literal=cookie-secret="$(python3 -c 'import secrets; print(secrets.token_urlsafe(32))')"
+kubectl -n dsh-demo create secret tls dsh-demo-tls --cert=tls.crt --key=tls.key
+
+# 2. Replace dsh-demo.example.com (70/71/72) and your-github-org (72).
+
+# 3. Enable SSO on the gateway and trust the public host in the template.
+kubectl -n dsh-demo set env deploy/dsh-gateway \
+  AUTH_PROXY_HEADER=X-Forwarded-User COOKIE_SECURE=true
+#    ... and set DSH_TRUSTED_HOSTS=dsh-demo.example.com in
+#    manifests/10-sandboxtemplate.yaml, then re-apply the template.
+
+# 4. Apply the variant.
+kubectl apply -f manifests/exposure/gateway-api-sso/
+```
+
+Verification:
+
+```bash
+kubectl get gateway dsh-gateway -n dsh-demo -o yaml        # Programmed=True
+kubectl get httproute -n dsh-demo -o wide                  # backend oauth2-proxy:4180, Accepted
+kubectl get deploy oauth2-proxy -n dsh-demo                # 1/1 Ready
+kubectl get endpoints oauth2-proxy -n dsh-demo             # backend present
+kubectl -n dsh-demo logs deploy/oauth2-proxy --tail=50     # no config errors
+```
+
+Browser check: open `https://<host>/` — you are redirected to GitHub, and after
+signing in as a member of the allowed organization the gateway auto-provisions
+your sandbox (the first page can show `Provisioning`) and connects you. A
+non-member is denied before reaching the gateway. GitHub logins are lowercase
+DNS-1123 labels, so they map 1:1 onto the gateway's `user` validation. The SSO
+landing page also offers **Recreate sandbox** (`POST /recreate`), which deletes
+the claim — wiping the workspace PVC — and provisions a fresh one.
+
+Sign-out: the gateway `/logout` clears `dsh_gw_session`; oauth2-proxy's session
+can be cleared at `/oauth2/sign_out`.
+
+> **SSO trust boundary — read this before enabling it.** After SSO is on, the
+> `dsh-gateway` Service must be reachable **only** through oauth2-proxy (it is
+> ClusterIP). The variant's `75-networkpolicies.yaml` restricts pod traffic
+> accordingly: the gateway accepts traffic only from oauth2-proxy pods,
+> oauth2-proxy only from the Gateway implementation, and oauth2-proxy egress is
+> limited to DNS, public HTTPS and the gateway. Anyone who can reach
+> `dsh-gateway:8080` directly can still send `X-Forwarded-User: <victim>` and be
+> treated as that user, so never add a second path (the Ingress variant, a
+> shared-host port-forward, a permissive policy). To turn SSO off, remove the
+> variable (`kubectl -n dsh-demo set env deploy/dsh-gateway AUTH_PROXY_HEADER-`)
+> and delete the SSO variant; the gateway falls back to bearer-token/session
+> auth.
+
+### Switching variants
+
+Delete the variant you had before applying the other one
+(`kubectl delete -f manifests/exposure/ingress/`), revert
+`AUTH_PROXY_HEADER`/`COOKIE_SECURE`, and verify with
+`kubectl -n dsh-demo get ingress,gateway,httproute` that exactly one path to the
+gateway remains.
+
+## Optional hardening
+
+The base walkthrough is deliberately portable. Four opt-in layers are documented
+in [optional hardening](docs/optional-hardening.md):
+
+- **gVisor** — uncomment `runtimeClassName: gvisor` before applying, or patch an
+  existing install. Requires a `gvisor` RuntimeClass and capable nodes.
+  `kubectl port-forward` does not work under gVisor; the gateway path does.
+- **nodeSelector** — uncomment and replace the placeholder node label to pin
+  sandboxes and the gateway to a dedicated pool; add a toleration for tainted
+  pools.
+- **Sandbox NetworkPolicy** —
+  `kubectl apply -f manifests/optional/network-policy/` allows only
+  gateway→sandbox on `3080` and sandbox→DNS/public `443`.
+- **Provider keys** — create `dsh-provider-keys-extra` as shown in step 1.
+
+Apply each independently and re-run the walkthrough. `kubectl apply -f manifests/`
+is non-recursive, so the optional manifest is not applied by the base step.
 
 ## Troubleshooting
 
@@ -346,36 +572,81 @@ redirects `/u/<user>` to the trailing-slash form with `308` so relative URLs res
 | Console spams `[connection] connection lost, retry #N` | The upstream WS upgrade is being rejected, surfaced as close `1011`. The gateway dials the sandbox **pod IP**, forwards no `Host`/`Origin`, and handshakes under the same `pod-IP:3080` authority DSH binds its cookie to; an older gateway image, or a sandbox with an empty `status.podIPs`, hits this loop |
 | `manifest.webmanifest` returns `401` in the console | Browsers fetch the Web App Manifest without credentials, so the gateway's session cookie is absent and the request fails closed. The UI is unaffected; only the PWA install prompt is lost |
 | Signup is slow / `202` then `Waking` | Warm pool exhausted (`kubectl get sandboxes -l agents.x-k8s.io/warm-pool-sandbox`); scale the pool |
-| `403` from the Kubernetes API in gateway logs | The gateway ServiceAccount is missing claim/sandbox/pod-log verbs (see `50-gateway.yaml`) |
+| `403` from the Kubernetes API in gateway logs | The gateway ServiceAccount is missing claim/sandbox/pod-log verbs (see `manifests/50-gateway.yaml`) |
-| Step 3: `pod "$SB" not found` after deploying the gateway | The claim was suspended by the idle sweeper. Claims created by the gateway carry `aaas.example.com/managed-by=dsh-gateway`; hand-applied claims (steps 1–7) do not and are never swept. Upgrade the gateway to a build that honors the marker, or resume the sandbox: `kubectl -n dsh-demo patch sandbox "$SB" --type merge -p '{"spec":{"operatingMode":"Running"}}'` |
+| Gateway pod `ErrImagePull` / `ImagePullBackOff` (especially on kind) | The manifest uses `imagePullPolicy: IfNotPresent` with the release identity. Build with `make gateway`, retag to exactly the manifest's image, `kind load docker-image <that-ref>`, or set the Deployment image to your local tag / pinned digest. On a real cluster, make sure the GHCR package is readable (public or a pull secret) |
-| Resume crash-loops: `credentials-local: … is readable beyond its owner (mode 660)` | The pod template lacks `fsGroupChangePolicy: OnRootMismatch`, so the kubelet's default fsGroup policy rewrote `.credentials.yaml` to `0660`; DSH requires `0600` and refuses to start. New installs get the policy from the template. For an existing sandbox: suspend it, run a throwaway pod on `dsh-home-$SB` to `chmod 600 /home/node/.dsh/.credentials.yaml`, patch the sandbox's `podTemplate` with the policy, then resume. |
+| Step 3: `pod "$SB" not found` after deploying the gateway | The claim was suspended by the idle sweeper. Claims created by the gateway carry `aaas.example.com/managed-by=dsh-gateway`; hand-applied claims (steps 1–7) do not and are never swept. Resume the sandbox: `kubectl -n dsh-demo patch sandbox "$SB" --type merge -p '{"spec":{"operatingMode":"Running"}}'` |
+| Resume crash-loops: `credentials-local: … is readable beyond its owner (mode 660)` | The pod template lacks `fsGroupChangePolicy: OnRootMismatch`, so the kubelet's default fsGroup policy rewrote `.credentials.yaml` to `0660`; DSH requires `0600` and refuses to start. New installs get the policy from the template. For an existing sandbox: suspend it, run a throwaway pod on `dsh-home-$SB` to `chmod 600 /home/node/.dsh/.credentials.yaml`, patch the sandbox's `podTemplate` with the policy, then resume |
+| SSO: GitHub login succeeds but the gateway asks for a token / returns `401` to `/recreate` | `AUTH_PROXY_HEADER` is not set on `deploy/dsh-gateway` (SSO is opt-in). Set `AUTH_PROXY_HEADER=X-Forwarded-User` and confirm the request actually reaches the gateway through oauth2-proxy |
+| SSO: gateway treats a caller as another user / bad `X-Forwarded-User` accepted | Trust boundary violation: something other than oauth2-proxy can reach `dsh-gateway:8080`. Remove the second path (Ingress/Gateway/port-forward), keep the Service ClusterIP, and only re-enable SSO once the proxy is the sole entry point. Never put a trusted identity header in front of a service that is directly reachable |
+| SSO: oauth2-proxy `cookie_secret must be 16, 24, or 32 bytes ... but is 44 bytes` | The cookie secret was generated as standard base64. Use URL-safe unpadded base64 (see `73-oauth2-proxy-secret.yaml.example`) |
+| SSO: redirect loop (`ERR_TOO_MANY_REDIRECTS`) | oauth2-proxy `--redirect-url` / callback does not match the public FQDN, or TLS is not terminating at the Gateway listener; fix the OAuth App URLs and the manifest placeholders |
+| SSO: DSH rejects the public host behind the proxy | Add the public hostname to `DSH_TRUSTED_HOSTS` in `manifests/10-sandboxtemplate.yaml`; the gateway forwards the browser's `Host` |
+| Pods `Pending` after setting `nodeSelector` | No node matches the label, the pool is full, or a tainted pool needs a toleration; inspect `kubectl describe pod` and the node labels |
+| gVisor: `kubectl port-forward` fails or the connection is refused | Port-forward is incompatible with gVisor; reach DSH through the gateway (or a reachable Service/Sandbox Router) |
+| Sandbox cannot reach a model API after applying the optional NetworkPolicy | The policy allows DNS and public TCP `443` only; a proxy, custom base URL, port `80` or non-443 endpoint needs an explicit egress rule |
+| Gateway cannot reach a sandbox after applying an exposure NetworkPolicy | Check that the CNI enforces NetworkPolicy and that the Traefik/oauth2-proxy pod labels match; kubelet probes may also need the node CIDR |
+| New provider key not visible in a sandbox | Pod env is stamped at creation: delete the warm-pool spares and recreate claimed pods. A key saved in DSH's credential store also wins over env |
 
 ## Limitations
 
 Deliberately **not** production code:
 
-- **Single replica.** Idle clocks, in-flight tracking, and the handshake cache are in memory.
+- **Single replica.** Idle clocks, in-flight tracking, and the handshake cache
-  Running two gateway replicas would double-suspend or lose wake tracking; scale up only after
+  are in memory. Running two gateway replicas would double-suspend or lose wake
-  moving that state to a shared store.
+  tracking; scale up only after moving that state to a shared store.
-- **Log scraping.** The launch token is recovered from pod logs. Log rotation, a restarted pod,
+- **Log scraping.** The launch token is recovered from pod logs. Log rotation, a
-  or a changed DSH log format can break the handshake until the next `401` refresh.
+  restarted pod, or a changed DSH log format can break the handshake until the
-- **Shared provider key.** `DEEPSEEK_API_KEY` is shared by all tenants via the template. Real
+  next `401` refresh.
-  multi-tenancy needs per-tenant credentials or an egress proxy.
+- **Shared provider keys.** `DEEPSEEK_API_KEY` and any keys in the optional
-- **No TLS in the gateway.** Terminate TLS at an Ingress/reverse proxy and set
+  `dsh-provider-keys-extra` Secret are shared by all tenants via the template.
+  Tenants can override a key through DSH's stored credential file on their PVC,
+  but the platform does not manage that. Real multi-tenancy needs per-tenant
+  credentials or an egress proxy.
+- **No TLS in the gateway.** Terminate TLS at an Ingress or Gateway and set
   `COOKIE_SECURE=true`.
-- **In-memory user directory.** Users are claims + annotations; there is no database, password
+- **SSO trust is hop-based.** `AUTH_PROXY_HEADER` trusts whoever sets the header.
-  reset, or admin API. Tokens are stored only as SHA-256 hashes in claim annotations.
+  The SSO variant ships `75-networkpolicies.yaml`, which restricts the gateway
-- **Bearer tokens in URLs.** Avoid putting the signup token in a URL/log; the browser flow uses
+  to oauth2-proxy and oauth2-proxy egress to the gateway/DNS/public HTTPS; a
-  the `HttpOnly` cookie instead.
+  custom exposure without that policy has no signature, mTLS or network
+  enforcement.
+- **Isolation is opt-in.** gVisor, the sandbox NetworkPolicy and the exposure
+  policies are opt-in; without them, sandboxes share the host kernel and can
+  reach the cluster network. The base example is a demo, not a hardened
+  multi-tenant platform.
+- **OAuth org is the only authorization.** Any GitHub user in the configured
+  organization gets an auto-provisioned sandbox; there is no per-user allow-list,
+  quota, or admin API.
+- **In-memory user directory.** Users are claims + annotations; there is no
+  database, password reset, or admin API. Tokens are stored only as SHA-256
+  hashes in claim annotations.
+- **Bearer tokens in URLs.** Avoid putting the signup token in a URL/log; the
+  browser flow uses the `HttpOnly` cookie instead.
 
 ## Cost model
 
-The same economics as the upstream pattern: suspend-when-idle plus warm pools turn an
+The same economics as the upstream pattern: suspend-when-idle plus warm pools turn
-always-on instance into a sub-second cold-start pause per return-after-absence, at a fraction
+an always-on instance into a sub-second cold-start pause per return-after-absence,
-of the cost.
+at a fraction of the cost.
 
 ## Cleanup
 
 ```bash
+# Delete an exposure variant first if you applied one (optional; namespace
+# deletion below removes everything):
+kubectl delete -f manifests/exposure/ingress/          # or gateway-api-sso/
+# Then the whole example:
 kubectl delete namespace dsh-demo
 ```
+
+If you created the oauth2-proxy/TLS Secrets or the GitHub OAuth App for step 9,
+delete the Secrets with the namespace and revoke the OAuth App in GitHub.
+
+## More
+
+- [Gateway README](gateway/README.md) — API, configuration, auth/SSO, failure
+  semantics, limitations.
+- [Architecture](docs/architecture.md) — container/sequence diagrams, ADRs,
+  security and RBAC, failure modes, evolution path.
+- [Exposure README](manifests/exposure/README.md) — the two variants in detail.
+- [Optional hardening](docs/optional-hardening.md) — gVisor, nodeSelector,
+  NetworkPolicy and extra provider keys, with verification and rollback.

examples/dsh-agents-as-a-service/docs/architecture.md

@@ -1,7 +1,7 @@
 # Architecture
 
-This document describes the browser-usable **agents-as-a-service** platform in
+This document describes the browser-usable **agents-as-a-service** platform in this example
-[`examples/dsh-agents-as-a-service/`](../examples/dsh-agents-as-a-service/): how the gateway,
+([README](../README.md), [manifests](../manifests/), [gateway](../gateway/)): how the gateway,
 Kubernetes, and DSH Web fit together, and why the design looks the way it does.
 
 Scope: one Kubernetes namespace (`dsh-demo`), one shared DSH Web image, one gateway deployment,
@@ -49,6 +49,31 @@ Responsibilities:
 | **DSH Web pod** | One `dsh web` process per user, state on the per-user PVC, listening on `3080`. |
 | **Warm pool** | Keeps `N` Ready sandboxes so signup is a label flip instead of a cold start. |
 
+## Exposure variants
+
+The base manifests deploy the gateway as a ClusterIP Service (`dsh-gateway:8080`) and expose
+nothing outside the cluster. Two **mutually exclusive** variants live under
+[`manifests/exposure/`](../manifests/exposure/):
+
+| Variant | Entry point | Authentication | Notes |
+| --- | --- | --- | --- |
+| [Ingress](../manifests/exposure/ingress/60-ingress.yaml) | Traefik `Ingress` + optional TLS | the gateway's own signup/session cookie | simplest; no external IdP; set `COOKIE_SECURE=true` with HTTPS |
+| [Gateway API + SSO](../manifests/exposure/gateway-api-sso/70-gateway.yaml) | Gateway API `Gateway`/`HTTPRoute` terminating TLS | GitHub OAuth via [oauth2-proxy](../manifests/exposure/gateway-api-sso/72-oauth2-proxy.yaml), identity forwarded as `X-Forwarded-User` | requires `AUTH_PROXY_HEADER` on the gateway; the trust boundary applies |
+
+They are alternatives, not a stack: applying both creates a second path to the same gateway
+and defeats SSO. When SSO is enabled, the Service must stay ClusterIP and be reachable only
+through oauth2-proxy — otherwise any client can send `X-Forwarded-User` itself and be treated
+as that user. The gateway ignores the header unless `AUTH_PROXY_HEADER` is set. See the
+[exposure README](../manifests/exposure/README.md) and the
+[gateway README](../gateway/README.md#sso-opt-in).
+
+Each variant also ships a NetworkPolicy: `ingress/61-networkpolicy.yaml` limits gateway ingress
+to Traefik pods, and `gateway-api-sso/75-networkpolicies.yaml` limits the gateway to
+oauth2-proxy, oauth2-proxy ingress to the Gateway implementation, and oauth2-proxy egress to
+DNS/public HTTPS/the gateway. The SSO policy turns the trust boundary into pod-traffic
+enforcement; the caveats (Traefik label, `hostNetwork`, kubelet probes) are in
+[optional hardening](optional-hardening.md).
+
 ## Flows
 
 ### Signup (browser)
@@ -247,7 +272,7 @@ sequenceDiagram
 
 ## Security and RBAC
 
-The gateway runs with a namespace-scoped ServiceAccount (`50-gateway.yaml`):
+The gateway runs with a namespace-scoped ServiceAccount (`manifests/50-gateway.yaml`):
 
 | API group | Resource | Verbs | Why |
 | --- | --- | --- | --- |
@@ -272,8 +297,14 @@ Notes and limits:
 - **TLS is external.** The gateway serves plain HTTP; terminate TLS at the Ingress and set
   `COOKIE_SECURE=true`. Without TLS, session cookies are replayable on the network.
 - **Tenant isolation** is pod + PVC separation; all tenants share one namespace, one DSH binary,
-  and one `DEEPSEEK_API_KEY`. Add NetworkPolicies and per-tenant credentials before calling it
+  and the shared provider keys (`dsh-provider-keys` plus the optional
-  multi-tenant-grade.
+  `dsh-provider-keys-extra`). `manifests/optional/network-policy/` adds an opt-in sandbox
+  NetworkPolicy, and gVisor/`nodeSelector` are opt-in PodSpec fields. Add per-tenant
+  credentials before calling it multi-tenant-grade.
+- **Optional hardening is opt-in.** gVisor, node selection, the sandbox/exposure NetworkPolicies
+  and extra provider keys are documented in [optional hardening](optional-hardening.md). The
+  base manifests stay portable (no gVisor RuntimeClass, no active node labels, no
+  NetworkPolicy and no extra Secret required).
 - **No gateway rate limiting.** Signup can create claims until the cluster or warm pool is
   exhausted; put limits at the ingress for real deployments.
 
@@ -288,6 +319,10 @@ Notes and limits:
 | DSH auth cookie expired mid-session | Proxy `401` once, then recovers | Gateway refreshes the handshake once |
 | Upstream pod name changed after resume | Cached cookie keyed by old pod UID is useless | Cache is invalidated on suspend; next request re-handshakes |
 | Two gateway replicas | Double suspend/wake races | Keep `replicas: 1` until state is externalized |
+| Optional NetworkPolicy blocks DNS/probes | Sandbox 502/503, pod restarts, failed `getent` | Check the CNI, DNS selector/NodeLocal address and kubelet-probe traffic; see the hardening doc |
+| gVisor + `kubectl port-forward` | Forward refuses or returns nothing | Port-forward is incompatible with gVisor; use the gateway or a reachable Service |
+| Provider key added but missing in the pod | Requests still fail with `MISSING_CREDENTIAL` | Pod env is stamped at creation; recreate spares/pods. A stored credential wins over env |
+| `nodeSelector` matches no node | Pod `Pending`, `0/N nodes are available` | Fix the label, pool capacity or taint/toleration; RuntimeClass scheduling may also constrain it |
 
 ## Upstream feature request: remove log scraping
 

examples/dsh-agents-as-a-service/docs/optional-hardening.md

@@ -0,0 +1,513 @@
+# Optional hardening: gVisor, nodeSelector, NetworkPolicy and provider keys
+
+The base example is deliberately portable: it runs on kind and GKE without a
+gVisor runtime, a tainted node pool or a NetworkPolicy-capable CNI, and it
+boots with only the required `dsh-provider-keys` Secret. This document covers
+four **opt-in** layers:
+
+| Layer | Where it lives | What it changes |
+| --- | --- | --- |
+| gVisor | commented `runtimeClassName` in the SandboxTemplates and Deployments | puts DSH and/or the gateway in a userspace kernel |
+| nodeSelector | commented `nodeSelector` in the same files | pins pods to a chosen node pool |
+| NetworkPolicy | `manifests/optional/network-policy/`, `manifests/exposure/*/` | limits sandbox, gateway and proxy connectivity |
+| Provider keys | optional `dsh-provider-keys-extra` Secret | injects extra provider API keys into every sandbox |
+
+Each layer is independent. Enable only what the cluster supports and test the
+walkthrough after each change.
+
+## 1. gVisor
+
+### What it changes
+
+The DSH sandbox and the gateway (and optionally oauth2-proxy) run under the
+`gvisor` RuntimeClass. `agent-sandbox` passes `runtimeClassName` straight to the
+PodSpec; no CRD change is involved.
+
+### Prerequisites
+
+- A `RuntimeClass` named `gvisor`:
+
+  ```bash
+  kubectl get runtimeclass gvisor -o yaml
+  ```
+
+- Nodes capable of running it (`runsc` installed and registered with the
+  container runtime). How you get there is cluster-specific:
+  - GKE Sandbox: create a node pool with `--sandbox=type=gvisor`; GKE labels
+    the nodes `sandbox.gke.io/runtime: gvisor`, taints them
+    `sandbox.gke.io/runtime=gvisor:NoSchedule`, and its `gvisor` RuntimeClass
+    applies the matching affinity and toleration automatically.
+  - Self-managed: install gVisor, create the `gvisor` RuntimeClass with
+    `handler: runsc`, and label/taint a dedicated node pool yourself.
+- A scheduling plan: a gVisor RuntimeClass without capable nodes makes pods
+  fail to start. Use the RuntimeClass `scheduling` fields or the optional
+  `nodeSelector`/toleration described in section 2.
+
+### Enable it
+
+**Fresh install:** uncomment `runtimeClassName: gvisor` before applying:
+
+- [`manifests/10-sandboxtemplate.yaml`](../manifests/10-sandboxtemplate.yaml)
+- [`manifests/50-gateway.yaml`](../manifests/50-gateway.yaml)
+- [`manifests/exposure/gateway-api-sso/72-oauth2-proxy.yaml`](../manifests/exposure/gateway-api-sso/72-oauth2-proxy.yaml)
+  (only with the SSO variant)
+- [minimal sandbox-template.yaml](../../minimal-single-tenant/manifests/sandbox-template.yaml)
+
+**Existing install:** a template edit does not update existing Sandboxes, and
+warm-pool spares use `OnReplenish`, so patch explicitly. Plan a maintenance
+window: claimed users are disconnected when their pod is recreated.
+
+```bash
+# 1. The blueprint for future sandboxes.
+kubectl -n dsh-demo patch sandboxtemplate dsh-web --type merge \
+  -p '{"spec":{"podTemplate":{"spec":{"runtimeClassName":"gvisor"}}}}'
+
+# 2. Warm-pool spares: delete them; the pool replenishes from the template.
+kubectl -n dsh-demo delete sandboxes -l agents.x-k8s.io/warm-pool-sandbox
+
+# 3. Claimed sandboxes: snapshot their pod template, then suspend/resume.
+for sb in $(kubectl -n dsh-demo get sandboxes \
+  -l '!agents.x-k8s.io/warm-pool-sandbox' -o jsonpath='{.items[*].metadata.name}'); do
+  kubectl -n dsh-demo patch sandbox "$sb" --type merge \
+    -p '{"spec":{"podTemplate":{"spec":{"runtimeClassName":"gvisor"}}}}'
+  kubectl -n dsh-demo patch sandbox "$sb" --type merge \
+    -p '{"spec":{"operatingMode":"Suspended"}}'
+  kubectl -n dsh-demo patch sandbox "$sb" --type merge \
+    -p '{"spec":{"operatingMode":"Running"}}'
+done
+
+# 4. The gateway (and oauth2-proxy when the SSO variant is installed).
+kubectl -n dsh-demo patch deploy dsh-gateway --type merge \
+  -p '{"spec":{"template":{"spec":{"runtimeClassName":"gvisor"}}}}'
+kubectl -n dsh-demo rollout status deploy/dsh-gateway --timeout=180s
+# kubectl -n dsh-demo patch deploy oauth2-proxy --type merge \
+#   -p '{"spec":{"template":{"spec":{"runtimeClassName":"gvisor"}}}}'
+```
+
+If the pool's nodes are tainted and the RuntimeClass does not already add a
+toleration, add the matching `tolerations` block (section 2) in the same patch
+or in the manifests.
+
+### Verify
+
+```bash
+SB=$(kubectl -n dsh-demo get sandboxclaim dsh-alice -o jsonpath='{.status.sandbox.name}')
+POD=$(kubectl -n dsh-demo get sandbox "$SB" \
+  -o jsonpath='{.metadata.annotations.agents\.x-k8s\.io/pod-name}'); POD=${POD:-$SB}
+
+kubectl -n dsh-demo get pod "$POD" -o jsonpath='{.spec.runtimeClassName}{"\n"}'
+# gvisor
+kubectl -n dsh-demo exec "$POD" -- uname -r
+kubectl -n dsh-demo get node "$(kubectl -n dsh-demo get pod "$POD" -o jsonpath='{.spec.nodeName}')" \
+  -o jsonpath='{.status.nodeInfo.kernelVersion}{"\n"}'
+```
+
+The pod's `runtimeClassName` is authoritative. The kernel release reported by
+`uname -r` inside a gVisor pod is the sandbox kernel, not the host kernel; on
+GKE it looks like `4.19.0-gvisor`.
+
+### Caveats
+
+- **`kubectl port-forward` does not work with gVisor.** The multi-tenant
+  gateway path (HTTP/WebSocket to the pod) works; the minimal example's
+  port-forward quickstart does not. Use the gateway example or a reachable
+  Service (NodePort/LoadBalancer/Sandbox Router) instead.
+- gVisor has performance overhead and does not implement every syscall. Test
+  DSH and the agent tools you rely on (`git`, `gh`, `uv`, language toolchains).
+- Node scheduling is the hard part. A `gvisor` RuntimeClass on a cluster with
+  no capable nodes leaves pods unschedulable or failing at container start.
+- Existing Sandboxes are snapshots. The loop above is required for every
+  claimed sandbox; deleting the `SandboxClaim` would also delete its PVC and
+  workspace data, so do not use claim re-creation as a shortcut.
+- A resumed sandbox starts cold; the startup probe gives it up to 120s.
+
+### Roll back
+
+```bash
+kubectl -n dsh-demo patch sandboxtemplate dsh-web --type merge \
+  -p '{"spec":{"podTemplate":{"spec":{"runtimeClassName":null}}}}'
+for sb in $(kubectl -n dsh-demo get sandboxes -o jsonpath='{.items[*].metadata.name}'); do
+  kubectl -n dsh-demo patch sandbox "$sb" --type merge \
+    -p '{"spec":{"podTemplate":{"spec":{"runtimeClassName":null}}}}'
+done
+kubectl -n dsh-demo delete sandboxes -l agents.x-k8s.io/warm-pool-sandbox
+kubectl -n dsh-demo patch deploy dsh-gateway --type merge \
+  -p '{"spec":{"template":{"spec":{"runtimeClassName":null}}}}'
+# kubectl -n dsh-demo patch deploy oauth2-proxy --type merge \
+#   -p '{"spec":{"template":{"spec":{"runtimeClassName":null}}}}'
+```
+
+Recreate the pods (delete spares, suspend/resume claimed sandboxes, let the
+Deployment roll out) so the cleared field takes effect.
+
+## 2. nodeSelector
+
+### What it changes
+
+Pods get a `nodeSelector` so they land only on nodes carrying the chosen label.
+The same field is available in both SandboxTemplates and both Deployments;
+the shipped value is **commented out** because active cluster-specific
+scheduling does not belong in the repository.
+
+### Choose a label
+
+```bash
+kubectl get nodes --show-labels
+```
+
+- **GKE Sandbox:** the nodes carry `sandbox.gke.io/runtime: gvisor` and are
+  tainted `sandbox.gke.io/runtime=gvisor:NoSchedule`. With
+  `runtimeClassName: gvisor`, GKE already schedules the pod onto those nodes;
+  add a `nodeSelector` only when you need a specific sandbox pool or
+  ComputeClass (`cloud.google.com/compute-class: <name>`).
+- **Self-managed:** label the pool you want, for example
+  `dsh.example.com/node-pool: gvisor`, and use that label.
+- **General pinning:** any stable node-pool label works. Keep the real key and
+  value in a local patch; the manifests use `dsh.example.com/node-pool` as an
+  obvious placeholder.
+
+### Enable it
+
+Uncomment and replace the placeholder before a fresh apply:
+
+```yaml
+      nodeSelector:
+        dsh.example.com/node-pool: gvisor
+```
+
+For an existing install, patch the template, each claimed Sandbox and the
+Deployments, then recreate pods exactly as in section 1:
+
+```bash
+kubectl -n dsh-demo patch sandboxtemplate dsh-web --type merge \
+  -p '{"spec":{"podTemplate":{"spec":{"nodeSelector":{"dsh.example.com/node-pool":"gvisor"}}}}}'
+# ... same warm-pool delete / claimed-sandbox suspend-resume / Deployment
+# patch and rollout as in section 1, with nodeSelector instead of
+# runtimeClassName.
+```
+
+If the selected nodes are tainted, add a matching toleration. This is the
+companion block; do **not** uncomment it unless the pool is actually tainted:
+
+```yaml
+      tolerations:
+        - key: dsh.example.com/node-pool
+          operator: Equal
+          value: gvisor
+          effect: NoSchedule
+```
+
+GKE Sandbox's taint is `sandbox.gke.io/runtime=gvisor:NoSchedule`; the GKE
+`gvisor` RuntimeClass adds that toleration automatically, so a manual copy is
+only needed when you schedule without the RuntimeClass or with a different
+pool.
+
+### Verify and troubleshoot
+
+```bash
+kubectl -n dsh-demo get pod "$POD" -o wide
+kubectl -n dsh-demo get pod "$POD" -o jsonpath='{.spec.nodeSelector}{"\n"}'
+kubectl -n dsh-demo describe pod "$POD" | sed -n '/Events:/,$p'
+```
+
+- `Pending` with `0/N nodes are available`: the label is wrong, the pool is
+  full, or the pod needs a toleration for a taint.
+- A pod-level `nodeSelector` is merged with the RuntimeClass
+  `scheduling.nodeSelector`. If both are set and conflict, no node matches.
+- Labels changed after scheduling do not move running pods. Patch/recreate.
+- A `nodeSelector` that excludes every gVisor node is a valid way to keep the
+  gateway on a normal pool while the sandboxes run under gVisor.
+
+### Roll back
+
+Remove the field from the manifests, or patch it to `null`, then recreate the
+pods:
+
+```bash
+kubectl -n dsh-demo patch sandboxtemplate dsh-web --type merge \
+  -p '{"spec":{"podTemplate":{"spec":{"nodeSelector":null}}}}'
+# ... same per-Sandbox and Deployment loop as section 1.
+```
+
+## 3. NetworkPolicy
+
+The base example does **not** manage NetworkPolicy: the SandboxTemplate is
+`networkPolicyManagement: Unmanaged`, and the gateway has no policy. That keeps
+the walkthrough portable and independent of the sandbox-router; the opt-in
+policies below are standard Kubernetes `NetworkPolicy` objects.
+
+### Optional sandbox policy
+
+[`manifests/optional/network-policy/10-sandbox-networkpolicy.yaml`](../manifests/optional/network-policy/10-sandbox-networkpolicy.yaml)
+selects every Sandbox pod through the agent-sandbox tracking label
+`agents.x-k8s.io/sandbox-name-hash`. It applies to existing warm-pool and
+claimed sandboxes without recreating them.
+
+```bash
+kubectl apply -f manifests/optional/network-policy/
+kubectl delete -f manifests/optional/network-policy/   # rollback
+```
+
+What it allows:
+
+| Direction | Allowed | Blocked |
+| --- | --- | --- |
+| Ingress | gateway pods (`app: dsh-gateway`) on TCP `3080` | everything else, including other sandboxes and cluster Services |
+| Egress | UDP/TCP `53` to kube-dns and NodeLocal DNSCache; TCP `443` to public IPs | RFC1918, CGNAT, link-local/metadata, cluster Services/API, plain HTTP, other ports |
+
+Verify from inside the pods (NetworkPolicy does not affect `kubectl exec`
+itself, only the traffic the commands generate):
+
+```bash
+SB=$(kubectl -n dsh-demo get sandboxclaim dsh-alice -o jsonpath='{.status.sandbox.name}')
+POD=$(kubectl -n dsh-demo get sandbox "$SB" \
+  -o jsonpath='{.metadata.annotations.agents\.x-k8s\.io/pod-name}'); POD=${POD:-$SB}
+
+# Allowed: gateway -> sandbox.
+kubectl -n dsh-demo exec deploy/dsh-gateway -- python -c \
+  "import urllib.request; print(urllib.request.urlopen('http://$POD:3080/favicon.svg', timeout=5).status)"
+
+# Allowed: DNS and public HTTPS from the sandbox.
+kubectl -n dsh-demo exec "$POD" -- getent hosts api.deepseek.com
+kubectl -n dsh-demo exec "$POD" -- curl -fsS -o /dev/null -w '%{http_code}\n' https://example.com
+
+# Denied: another sandbox cannot reach this one on 3080 (expect a timeout).
+OTHER_SB=$(kubectl -n dsh-demo get sandboxclaim dsh-bob -o jsonpath='{.status.sandbox.name}')
+OTHER_POD=$(kubectl -n dsh-demo get sandbox "$OTHER_SB" \
+  -o jsonpath='{.metadata.annotations.agents\.x-k8s\.io/pod-name}'); OTHER_POD=${OTHER_POD:-$OTHER_SB}
+kubectl -n dsh-demo exec "$OTHER_POD" -- curl --max-time 3 -sS "http://$POD:3080/favicon.svg"
+```
+
+Caveats:
+
+- **The CNI must enforce NetworkPolicy.** If it does not, the file applies but
+  has no effect.
+- DNS: the default assumes CoreDNS/kube-dns pods labelled `k8s-app: kube-dns`
+  and covers NodeLocal DNSCache at `169.254.20.10`. A different DNS layout
+  needs a selector/`ipBlock` edit.
+- **Kubelet probes** from the node are CNI-dependent. If a pod starts failing
+  its probes, allow the node CIDR on the probe port or remove the ingress
+  policy.
+- The policy blocks cluster Services and the Kubernetes API from the sandbox.
+  DSH does not need them, but an agent tool that does needs an explicit rule.
+- It allows any public host on TCP `443`, not an FQDN allowlist. It is network
+  isolation, not data-loss prevention.
+- Custom provider base URLs, an HTTP proxy, port `80`, SSH `git` (port `22`) or
+  a non-443 provider endpoint need explicit egress additions.
+- Do not combine this standalone policy with `networkPolicyManagement: Managed`
+  unless you migrate the rules into `spec.networkPolicy`. NetworkPolicies are
+  additive; the controller's Managed secure default would also be present.
+- `kubectl port-forward` still works for debugging (the connection is local to
+  the pod), except under gVisor.
+
+### Exposure-variant policies
+
+Each exposure variant ships its own policy. They are part of the variant, not a
+separate opt-in step:
+
+- [`manifests/exposure/ingress/61-networkpolicy.yaml`](../manifests/exposure/ingress/61-networkpolicy.yaml)
+  allows only Traefik pods (`app.kubernetes.io/name: traefik`) to reach the
+  gateway on `8080`.
+- [`manifests/exposure/gateway-api-sso/75-networkpolicies.yaml`](../manifests/exposure/gateway-api-sso/75-networkpolicies.yaml)
+  allows only oauth2-proxy to reach the gateway, only the Gateway
+  implementation (Traefik) to reach oauth2-proxy, and limits oauth2-proxy
+  egress to DNS, public HTTPS (GitHub) and the gateway.
+
+The SSO policy is what turns the trust boundary in the
+[exposure README](../manifests/exposure/README.md) into network enforcement.
+The `dsh-gateway` Service must still stay ClusterIP; do not apply both exposure
+variants.
+
+Verify the negative case from a sandbox pod (it is not the proxy):
+
+```bash
+kubectl -n dsh-demo exec "$POD" -- curl --max-time 3 -sS http://dsh-gateway:8080/healthz
+# expected: timeout/connection failure
+```
+
+Then verify the real browser path through the Ingress or Gateway, and confirm
+the gateway/proxy pods are `Ready`. If Traefik uses `hostNetwork` or a
+different pod label, replace the `podSelector` with the correct selector or an
+`ipBlock`. As with the sandbox policy, kubelet probes can be affected on some
+CNIs.
+
+### Gateway egress (documented, not shipped)
+
+The gateway needs DNS, the Kubernetes API, and TCP `3080` to sandbox pods. The
+API server endpoint is cluster-specific (Service CIDR or node IP/port), so an
+egress policy is **not** shipped. If your cluster has a stable API-server CIDR
+and port, add an egress policy like this (replace the placeholders; verify the
+port, commonly `443` or `6443`):
+
+```yaml
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: dsh-gateway-egress
+  namespace: dsh-demo
+spec:
+  podSelector:
+    matchLabels:
+      app: dsh-gateway
+  policyTypes:
+    - Egress
+  egress:
+    - to:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: kube-system
+          podSelector:
+            matchLabels:
+              k8s-app: kube-dns
+      ports:
+        - protocol: UDP
+          port: 53
+        - protocol: TCP
+          port: 53
+    - to:
+        - ipBlock:
+            cidr: 10.96.0.1/32   # placeholder: API-server Service/cluster endpoint
+      ports:
+        - protocol: TCP
+          port: 443
+    - to:
+        - podSelector:
+            matchExpressions:
+              - key: agents.x-k8s.io/sandbox-name-hash
+                operator: Exists
+      ports:
+        - protocol: TCP
+          port: 3080
+```
+
+Cilium users can express the API server as `toEntities: kube-apiserver` (or
+`toServices`) instead of a CIDR. Do not apply the sample blindly: a wrong CIDR
+or port silently breaks signup/proxy.
+
+## 4. Optional provider keys
+
+### How injection works
+
+The SandboxTemplate injects two Secrets via `envFrom`:
+
+- `dsh-provider-keys` — required by the walkthrough; holds
+  `DEEPSEEK_API_KEY`.
+- `dsh-provider-keys-extra` — optional; referenced with `optional: true`, so a
+  missing Secret does not block sandbox startup. Every key in it becomes an
+  environment variable in every sandbox.
+
+Create the extra Secret before the warm pool (pod env is stamped at creation):
+
+```bash
+kubectl -n dsh-demo create secret generic dsh-provider-keys-extra \
+  --from-literal=OPENROUTER_API_KEY="sk-or-..." \
+  --from-literal=GEMINI_API_KEY="..." \
+  --from-literal=NVIDIA_API_KEY="nvapi-..." \
+  --dry-run=client -o yaml | kubectl apply -f -
+```
+
+Use the exact env-var names (uppercase, underscores) — invalid Secret keys are
+skipped by the kubelet with an event. Do not duplicate a key across the two
+Secrets; when the same key exists twice, the later `envFrom` entry wins.
+
+### Supported names (curated)
+
+These are the names DSH v0.2.1-rc.3 resolves through its packaged provider
+catalog; the catalog has more entries, these are the common ones:
+
+| Provider | Environment variable |
+| --- | --- |
+| DeepSeek | `DEEPSEEK_API_KEY` |
+| OpenRouter | `OPENROUTER_API_KEY` |
+| Google Gemini | `GEMINI_API_KEY` |
+| NVIDIA | `NVIDIA_API_KEY` |
+| OpenAI | `OPENAI_API_KEY` |
+| Anthropic | `ANTHROPIC_API_KEY` |
+| Groq | `GROQ_API_KEY` |
+| xAI | `XAI_API_KEY` |
+| Mistral | `MISTRAL_API_KEY` |
+| Together | `TOGETHER_API_KEY` |
+| Cerebras | `CEREBRAS_API_KEY` |
+| Vercel AI Gateway | `AI_GATEWAY_API_KEY` |
+| Hugging Face | `HF_TOKEN` |
+
+Aliases to avoid: `GOOGLE_API_KEY`, `HUGGINGFACE_API_KEY` and
+`VERCEL_AI_GATEWAY_API_KEY`. The packaged catalog looks for `GEMINI_API_KEY`,
+`HF_TOKEN` and `AI_GATEWAY_API_KEY` instead.
+
+### Picking up a key change
+
+A Secret update does not change running pods. The base key and extra keys are
+both snapshotted at container start:
+
+```bash
+# Warm-pool spares: delete them so the pool recreates them from the template.
+kubectl -n dsh-demo delete sandboxes -l agents.x-k8s.io/warm-pool-sandbox
+
+# Running claimed sandboxes: delete the pod (the Sandbox controller recreates
+# it) or suspend/resume the sandbox.
+POD=...   # resolve it as in section 3
+kubectl -n dsh-demo delete pod "$POD"
+```
+
+New claims get the new values automatically. Confirm names without printing
+secret values:
+
+```bash
+kubectl -n dsh-demo exec "$POD" -- sh -c '
+  for k in DEEPSEEK_API_KEY OPENROUTER_API_KEY GEMINI_API_KEY NVIDIA_API_KEY; do
+    if [ -n "$(printenv "$k" || true)" ]; then echo "$k=set"; else echo "$k=unset"; fi
+  done'
+```
+
+### Precedence and shared-key limits
+
+- DSH's stored credential file (`$DSH_HOME/.credentials.yaml`, mode `0600`)
+  **wins over the environment**. If a tenant saved a key through the DSH UI,
+  changing the Secret will not override it.
+- Both Secrets are shared by **every** tenant, and any agent can read its own
+  environment. This is a warm-pool constraint, not tenant isolation. A tenant
+  can override its own key through the DSH credential store on its PVC, but the
+  platform does not manage that; real multi-tenancy needs per-tenant
+  credentials or an egress proxy.
+- The optional Secret is created imperatively; the repository never contains a
+  real key. Keep it out of Git and out of shell history where possible.
+
+## 5. Verification summary
+
+Required locally for any change to this example:
+
+```bash
+make check          # versions, example layout, manifest YAML shape
+yamllint .
+make test           # gateway unit tests (gateway code is untouched)
+```
+
+CI additionally parses every manifest and runs `kubectl apply
+--dry-run=server` against the real agent-sandbox CRDs. The weekly kind e2e
+runs the base walkthrough; it also proves the optional extra Secret may be
+absent.
+
+Manual checks, on a cluster with the relevant CNI/runtime:
+
+- gVisor: pod `runtimeClassName`, `uname -r` differs from the node kernel,
+  gateway proxy works, port-forward limitation acknowledged.
+- nodeSelector: pods land on the intended nodes; no `Pending` events.
+- Sandbox policy: the allow/deny matrix above.
+- Exposure policies: browser path works; a non-proxy pod cannot reach the
+  gateway; probes stay healthy.
+- Provider keys: set/unset output (never the values) and the refresh procedure.
+
+## 6. Rollback summary
+
+| Layer | Rollback |
+| --- | --- |
+| Sandbox policy | `kubectl delete -f manifests/optional/network-policy/` |
+| Exposure policy | delete the exposure variant directory |
+| gVisor | patch `runtimeClassName: null`, recreate pods |
+| nodeSelector | patch `nodeSelector: null`, recreate pods |
+| Provider keys | delete the extra Secret or a key, recreate pods |
+
+No PVC or workspace data is touched by any rollback. Deleting a `SandboxClaim`
+is different: it cascades to the Sandbox **and** its PVC, so do not use claim
+deletion to apply a pod-spec change.

examples/dsh-agents-as-a-service/gateway/.dockerignore

@@ -0,0 +1,11 @@
+# Runtime image only needs the app and its pinned runtime requirements.
+__pycache__/
+*.py[cod]
+.pytest_cache/
+.ruff_cache/
+.venv/
+test_gateway.py
+requirements-dev.txt
+pyproject.toml
+README.md
+coverage.xml

examples/dsh-agents-as-a-service/gateway/README.md

@@ -4,7 +4,7 @@ A single-file, browser-usable control + data plane for
 [DeepSeek Harness Web (DSH)](https://github.com/deepseek-ai/deepseek-harness)
 sandboxes running behind the `agent-sandbox` CRDs.
 
-It does three things:
+It does four things:
 
 1. **Users** — creates a `SandboxClaim` from a warm pool, mints a bearer token
    (only its SHA-256 is stored as a claim annotation), reports derived state,
@@ -15,10 +15,15 @@ It does three things:
 3. **Reverse proxy** — proxies HTTP (including SSE) and WebSocket traffic to
    the sandbox's DSH Web server on `:3080`, including DSH's own cookie
    handshake.
+4. **Optional SSO** — when `AUTH_PROXY_HEADER` is set, trusts the identity
+   header an authenticating reverse proxy (for example oauth2-proxy) forwards,
+   auto-provisions that user, and exposes `POST /recreate` for a clean restart.
 
-DSH is pinned to `dsh-v0.2.1-rc.2` in the example manifests. It binds `:3080`,
+The DSH version pin lives in [`versions.env`](../../../versions.env)
-serves `/`, gates `/api` behind a `dsh-auth-*` cookie and requires a WebSocket
+(`DSH_VERSION` plus the optional repository `RELEASE_REVISION`); the example
-at `/api/remote.mux`.
+manifests and published images use the release identity built from it (currently
+`dsh-v0.2.1-rc.3-r4`). DSH binds `:3080`, serves `/`, gates `/api` behind a
+`dsh-auth-*` cookie and requires a WebSocket at `/api/remote.mux`.
 
 ## Flow
 
@@ -58,10 +63,11 @@ token. A failed handshake returns `503` with `Retry-After: 10`.
 | Method | Path | Auth | Purpose |
 | --- | --- | --- | --- |
 | `GET` | `/healthz` | none | Liveness/readiness. Never touches the cluster. |
-| `GET` | `/` | none | Landing page with signup + token login forms. |
+| `GET` | `/` | none | Landing page with signup + token login forms. With SSO it auto-provisions the proxy-identified user and redirects to their workspace. |
 | `POST` | `/users` | none | Signup. JSON body `{"user": "<dns-1123 label>"}` or form field `user`. JSON returns `201` when Ready, `202` when accepted but still Waking; form returns `303` to `/u/<user>/`. Both set the session cookie. `409` if the user exists, `400` if invalid, `413` if the body is too large. |
 | `POST` | `/login` | none | Form (`user`, `token`) returns `303` to `/u/<user>/`; JSON returns `200`. Sets the session cookie. `401` on a bad token, `404` for an unknown user. |
 | `POST` | `/logout` | none | Clears the session cookie and `303`s to `/`. |
+| `POST` | `/recreate` | trusted proxy header | **SSO only.** Deletes the authenticated user's claim (cascading sandbox + PVC, so workspace data is wiped), waits out finalizers, provisions a fresh claim and `303`s to `/u/<user>/`. `401` without a valid identity header; cookie-authenticated calls must be same-origin. |
 | `GET` | `/users/{user}` | bearer or cookie | Derived state: `Provisioning`, `Waking`, `Ready`, `Suspending`, `Suspended`. |
 | `DELETE` | `/users/{user}` | bearer or cookie | Delete the claim (sandbox + PVC cascade). Cookie-auth mutations require a same-origin `Origin`/`Referer`. |
 | `GET` | `/u/{user}` | — | `308` redirect to `/u/{user}/`. |
@@ -86,6 +92,41 @@ token. A failed handshake returns `503` with `Retry-After: 10`.
   absolute paths are rewritten under `/u/<user>/`, and any `token` query
   parameter is stripped.
 
+### SSO (opt-in)
+
+By default the gateway is the only authenticator: users sign up with a token or
+the session cookie, and the gateway ignores all identity headers. Set
+`AUTH_PROXY_HEADER` to enable SSO behind an authenticating reverse proxy such as
+oauth2-proxy:
+
+```bash
+kubectl -n dsh-demo set env deploy/dsh-gateway AUTH_PROXY_HEADER=X-Forwarded-User
+```
+
+When set, the gateway treats a request carrying that header as authenticated as
+that user, provided the value is a valid DNS-1123 label; the header is never
+trusted when the variable is unset. The landing page then auto-provisions the
+user (creates their claim idempotently, mints a rotated session token) and
+redirects to `/u/<user>/`, and `POST /recreate` becomes available for a clean
+restart. The base manifests leave it unset on purpose; the
+[SSO exposure variant](../manifests/exposure/gateway-api-sso/) documents how to
+enable it on the Deployment (`kubectl set env`). That variant also ships
+`75-networkpolicies.yaml`, which restricts the gateway to oauth2-proxy and
+oauth2-proxy's egress to the gateway, DNS and public HTTPS.
+
+> **Trust boundary — this is the security-critical part.** A trusted identity
+> header is only safe when **nothing else can reach the gateway**. The gateway
+> Service must stay ClusterIP and be reachable exclusively through the
+> authenticating proxy; if a client can reach `dsh-gateway:8080` directly (a
+> second Ingress/Gateway/Route, a port-forward on a shared host, a broad
+> NetworkPolicy), it can send `X-Forwarded-User` itself and impersonate any user.
+> The variant's `75-networkpolicies.yaml` restricts pod traffic to the proxy; a
+> custom exposure without an equivalent policy has no network enforcement.
+> Treat `AUTH_PROXY_HEADER` as "the proxy already authenticated this request",
+> not as an authentication mechanism of its own. Disable SSO by removing the
+> variable: the header is then ignored and bearer-token/session auth applies
+> again.
+
 ### Proxy failure semantics
 
 | Situation | Result |
@@ -123,6 +164,7 @@ can also be injected into `create_app` for tests.
 | `MAX_BODY_MB` | `32` | Maximum buffered request body (and `413` threshold). |
 | `HTTP_TIMEOUT` | `300` | Upstream connect/read timeout in seconds. Proxied streams (SSE, long responses) keep the connect/write budget but have **no read timeout**, so an idle event stream is not cut every five minutes. |
 | `SWEEP_INTERVAL` | `15` | Seconds between idle sweeps. |
+| `AUTH_PROXY_HEADER` | unset | Opt-in SSO: name of the trusted identity header set by an authenticating reverse proxy (e.g. `X-Forwarded-User`). Unset disables SSO and the header is never trusted. Enable only when the Service is reachable exclusively through that proxy (see [SSO](#sso-opt-in)). |
 
 ### Required RBAC
 
@@ -147,12 +189,21 @@ python -m ruff check .
 uvicorn gateway:create_app --factory --host 0.0.0.0 --port 8080
 ```
 
-Container image:
+Container image, from the repository root:
 
 ```bash
-docker build -t dsh-gateway examples/dsh-agents-as-a-service/gateway
+make gateway    # builds dsh-aaas-gateway:dev from this directory
 ```
 
+The equivalent direct build is
+`docker build -t dsh-aaas-gateway:dev examples/dsh-agents-as-a-service/gateway`.
+For kind, retag it to the image reference in
+`examples/dsh-agents-as-a-service/manifests/50-gateway.yaml` and `kind load` it.
+Published images are nested below the main image as
+`<GHCR_IMAGE>/dsh-agents-as-a-service/gateway:<identity>`, where the identity
+comes from [`versions.env`](../../../versions.env) — see
+[`docs/versioning.md`](../../../docs/versioning.md).
+
 The image runs as UID `10000`, sets `PYTHONDONTWRITEBYTECODE=1` and
 `HOME=/tmp` (read-only-rootfs compatible), listens on `8080`, and disables
 uvicorn's access log so bearer tokens in URLs are not logged.
@@ -182,3 +233,9 @@ uvicorn's access log so bearer tokens in URLs are not logged.
   re-runs the handshake once and replays the request.
 * **Only DSH on `:3080` is proxied.** There is no dashboard/API-port split and
   no platform API key injection.
+* **SSO trusts a header.** With `AUTH_PROXY_HEADER` set, any client that can
+  reach the gateway Service directly can spoof the identity header. The gateway
+  cannot enforce the trust boundary itself: keep the Service ClusterIP and
+  reachable only through the authenticating proxy. The SSO exposure variant
+  ships a NetworkPolicy that restricts pod traffic to the proxy; without it
+  there is no mTLS or signed identity assertion.

examples/dsh-agents-as-a-service/gateway/gateway.py

@@ -195,9 +195,7 @@ def derive_state(sandbox: dict | None) -> str:
 
 def token_matches(claim: dict, token: str | None) -> bool:
     """Timing-safe check of a user token against the stored SHA-256."""
-    want = (claim.get("metadata", {}).get("annotations") or {}).get(
+    want = (claim.get("metadata", {}).get("annotations") or {}).get(TOKEN_ANNOTATION, "")
-        TOKEN_ANNOTATION, ""
-    )
     if not token or not want:
         return False
     got = hashlib.sha256(token.encode()).hexdigest()
@@ -331,6 +329,11 @@ class Settings:
     # Connection retries while a Ready pod is still binding its port.
     upstream_attempts: int = 3
     upstream_retry_delay: float = 1.0
+    # Optional identity header (e.g. "X-Forwarded-User") set by an authenticating
+    # reverse proxy such as oauth2-proxy. When configured, requests carrying a
+    # valid user in this header are treated as authenticated (SSO); unset (None)
+    # disables SSO entirely and the header is never trusted.
+    auth_proxy_header: str | None = None
 
     @classmethod
     def from_env(cls) -> Settings:
@@ -348,6 +351,7 @@ class Settings:
             max_body_bytes=_env_int("MAX_BODY_MB", 32) * 1024 * 1024,
             http_timeout=_env_float("HTTP_TIMEOUT", 300.0),
             sweep_interval=_env_float("SWEEP_INTERVAL", 15.0),
+            auth_proxy_header=os.environ.get("AUTH_PROXY_HEADER") or None,
         )
 
 
@@ -496,13 +500,23 @@ class Kubernetes:
             {"spec": {"operatingMode": mode}},
         )
 
+    async def patch_token(self, user: str, token_hash: str) -> None:
+        await self._call(
+            "crd",
+            "patch_namespaced_custom_object",
+            GROUP,
+            VERSION,
+            self.namespace,
+            "sandboxclaims",
+            claim_name(user),
+            {"metadata": {"annotations": {TOKEN_ANNOTATION: token_hash}}},
+        )
+
     # -- pods and logs -----------------------------------------------------
 
     async def get_pod(self, name: str) -> dict | None:
         try:
-            pod = await self._call(
+            pod = await self._call("core", "read_namespaced_pod", name, self.namespace)
-                "core", "read_namespaced_pod", name, self.namespace
-            )
         except ApiException as exc:
             if exc.status == 404:
                 return None
@@ -512,9 +526,7 @@ class Kubernetes:
         # so callers can keep using ``pod.get(...)``.
         return k8s_client.ApiClient().sanitize_for_serialization(pod)
 
-    async def read_pod_logs(
+    async def read_pod_logs(self, name: str, container: str, tail_lines: int) -> str:
-        self, name: str, container: str, tail_lines: int
-    ) -> str:
         result = await self._call(
             "core",
             "read_namespaced_pod_log",
@@ -571,17 +583,66 @@ class Gateway:
                 return token, user
         return None, None
 
+    def remote_user(self, headers) -> str | None:
+        """The user asserted by a trusted reverse proxy, when SSO is enabled.
+
+        Honored only when ``auth_proxy_header`` is configured, and only when the
+        value is a valid dns-1123 label — a spoofed or malformed value is never
+        trusted.
+        """
+        name = self.settings.auth_proxy_header
+        if not name:
+            return None
+        raw = (headers.get(name) or "").strip()
+        return raw if valid_user(raw) else None
+
     def _authorized(
         self,
         claim: dict,
         token: str | None,
         cookie_user: str | None,
         user: str,
+        remote: str | None = None,
     ) -> bool:
+        if remote == user:
+            return True  # identity asserted by the authenticating proxy
         if cookie_user is not None and cookie_user != user:
             return False  # a session for another user never authorizes this one
         return token_matches(claim, token)
 
+    async def _sso_session(self, remote: str, headers, cookies, response: Response) -> dict | None:
+        """Provision ``remote`` idempotently and mint/refresh a session token.
+
+        The authenticating proxy has already verified ``remote``, so it is
+        trusted. A brand-new user is provisioned (claim created, token minted);
+        an existing user whose session cookie is missing or no longer matches
+        gets a rotated token so a fresh cookie can be issued. A still-valid
+        session is reused untouched. Provisioning is non-blocking: the sandbox
+        is awaited by the proxy path (``_resolve_sandbox``), so the landing page
+        can report "Provisioning" instead of stalling for ``WAKE_TIMEOUT``.
+        """
+        claim = await self.k8s.get_claim(remote)
+        token, cookie_user = self.credentials(headers, cookies)
+        if claim is not None and cookie_user == remote and token_matches(claim, token):
+            return claim
+        token = secrets.token_urlsafe(32)
+        token_hash = hashlib.sha256(token.encode()).hexdigest()
+        is_new = claim is None
+        if is_new:
+            try:
+                await self.k8s.create_claim(remote, token_hash, self.settings.pool)
+            except UserExists:
+                # Lost a concurrent signup race: rotate the existing token.
+                is_new = False
+                await self.k8s.patch_token(remote, token_hash)
+            else:
+                await self._touch(remote)
+        else:
+            await self.k8s.patch_token(remote, token_hash)
+            await self._touch(remote)
+        self.set_session(response, remote, token)
+        return await self.k8s.get_claim(remote) if is_new else claim
+
     @staticmethod
     def _mutation_from_cookie(headers, method: str, cookie_user: str | None) -> bool:
         return (
@@ -613,9 +674,7 @@ class Gateway:
         while True:
             async with self.state.lock:
                 if not self.state.maintenance.get(user):
-                    self.state.in_flight[user] = (
+                    self.state.in_flight[user] = self.state.in_flight.get(user, 0) + 1
-                        self.state.in_flight.get(user, 0) + 1
-                    )
                     self.state.last_activity[user] = time.time()
                     return True
             if time.monotonic() > deadline:
@@ -624,9 +683,7 @@ class Gateway:
 
     async def _release(self, user: str) -> None:
         async with self.state.lock:
-            self.state.in_flight[user] = max(
+            self.state.in_flight[user] = max(self.state.in_flight.get(user, 1) - 1, 0)
-                self.state.in_flight.get(user, 1) - 1, 0
-            )
             self.state.last_activity[user] = time.time()
 
     # -- sandbox / handshake helpers --------------------------------------
@@ -655,9 +712,7 @@ class Gateway:
             # Wake-on-connect: safe in ANY state, including mid-suspension.
             self._clear_handshake(user)
             try:
-                await self.k8s.patch_operating_mode(
+                await self.k8s.patch_operating_mode(sandbox["metadata"]["name"], "Running")
-                    sandbox["metadata"]["name"], "Running"
-                )
             except Exception as exc:
                 raise SandboxUnavailable("could not wake the sandbox") from exc
             sandbox = await self.wait_ready(user, self.settings.wake_timeout)
@@ -671,10 +726,7 @@ class Gateway:
 
     def _pod_name(self, sandbox: dict) -> str:
         annotations = sandbox.get("metadata", {}).get("annotations") or {}
-        return (
+        return annotations.get(POD_NAME_ANNOTATION) or sandbox["metadata"]["name"]
-            annotations.get(POD_NAME_ANNOTATION)
-            or sandbox["metadata"]["name"]
-        )
 
     @staticmethod
     def _pod_ip(sandbox: dict) -> str | None:
@@ -718,16 +770,11 @@ class Gateway:
                 self.settings.dsh_log_tail_lines,
             )
         except ApiException as exc:
-            raise HandshakeError(
+            raise HandshakeError(f"could not read logs for {pod_name}: {exc}") from exc
-                f"could not read logs for {pod_name}: {exc}"
-            ) from exc
         launch_token = parse_dsh_launch_token(logs)
         if not launch_token:
             raise HandshakeError("DSH launch token not found in pod logs")
-        url = (
+        url = f"http://{fqdn}:{self.settings.dsh_port}/?token={quote(launch_token, safe='')}"
-            f"http://{fqdn}:{self.settings.dsh_port}/"
-            f"?token={quote(launch_token, safe='')}"
-        )
         headers = {
             "Host": host,
             "X-Forwarded-Host": host,
@@ -743,9 +790,7 @@ class Gateway:
         except httpx.HTTPError as exc:
             raise HandshakeError(f"DSH handshake failed: {exc}") from exc
         if response.status_code >= 400:
-            raise HandshakeError(
+            raise HandshakeError(f"DSH handshake returned {response.status_code}")
-                f"DSH handshake returned {response.status_code}"
-            )
         cookie = extract_dsh_cookies(response.headers.get_list("set-cookie"))
         if not cookie:
             raise HandshakeError("DSH handshake set no dsh-auth cookie")
@@ -767,7 +812,63 @@ class Gateway:
     async def healthz(self, request: Request) -> JSONResponse:
         return JSONResponse({"status": "ok"})
 
-    async def landing(self, request: Request) -> HTMLResponse:
+    @staticmethod
+    def _sso_page(user: str, state: str) -> str:
+        """Minimal SSO landing: connect to the sandbox, or offer to recreate it.
+
+        No signup/token forms — the authenticating proxy has already identified
+        the user. A "Provisioning" sandbox refreshes itself until a pod exists;
+        any other state auto-connects to ``/u/<user>/`` and offers the single
+        "Recreate sandbox" action.
+        """
+        safe_user = html.escape(user)
+        path = quote(user)
+        if state == "Provisioning":
+            status = "Provisioning"
+            body = (
+                '<meta http-equiv="refresh" content="3">'
+                "<p>Provisioning your sandbox… this can take a minute.</p>"
+            )
+        else:
+            status = html.escape(state)
+            confirm = (
+                "onsubmit=\"return confirm('Delete this sandbox and start fresh? "
+                "Your workspace data will be wiped.')\""
+            )
+            body = (
+                f'<meta http-equiv="refresh" content="1;url=/u/{path}/">'
+                "<p>Connecting to your sandbox…</p>"
+                f'<form method="post" action="/recreate" {confirm}>'
+                '<button type="submit">Recreate sandbox</button></form>'
+            )
+        return (
+            '<!doctype html><html lang="en"><head><meta charset="utf-8">'
+            '<meta name="viewport" content="width=device-width, initial-scale=1">'
+            "<title>DSH sandbox</title><style>"
+            "body{font-family:system-ui,sans-serif;max-width:42rem;margin:3rem auto;"
+            "padding:0 1rem;line-height:1.5}"
+            "form{margin:1rem 0}button{padding:.4rem 1rem}"
+            "</style></head><body>"
+            "<h1>DeepSeek Harness sandbox</h1>"
+            f"<p>Signed in as <strong>{safe_user}</strong>.</p>"
+            f"<p>Sandbox status: <strong>{status}</strong>.</p>"
+            f"{body}"
+            "</body></html>"
+        )
+
+    async def landing(self, request: Request) -> Response:
+        remote = self.remote_user(request.headers)
+        if remote:
+            # SSO: auto-provision + connect. A temporary response captures the
+            # session cookie minted by _sso_session; the real page is rendered
+            # once the sandbox state is known.
+            response = HTMLResponse()
+            claim = await self._sso_session(remote, request.headers, request.cookies, response)
+            sandbox = await self._sandbox_of(claim) if claim else None
+            page = HTMLResponse(self._sso_page(remote, derive_state(sandbox)))
+            if "set-cookie" in response.headers:
+                page.headers["set-cookie"] = response.headers["set-cookie"]
+            return page
         token, user = self.credentials(request.headers, request.cookies)
         session = ""
         if user and token:
@@ -826,14 +927,10 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
     @staticmethod
     def _wants_form(request: Request) -> bool:
         ctype = request.headers.get("content-type", "").lower()
-        return ctype.startswith(
+        return ctype.startswith(("application/x-www-form-urlencoded", "multipart/form-data"))
-            ("application/x-www-form-urlencoded", "multipart/form-data")
-        )
 
     async def _read_payload(self, request: Request) -> dict:
-        if request.headers.get("content-type", "").lower().startswith(
+        if request.headers.get("content-type", "").lower().startswith("application/json"):
-            "application/json"
-        ):
             data = await self._read_body(request)
             try:
                 payload = json.loads(data)
@@ -870,9 +967,7 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
             return self._error(413, "request body too large")
         user = payload.get("user", "")
         if not valid_user(user):
-            return self._error(
+            return self._error(400, "body must be {'user': '<dns-1123 label>'}")
-                400, "body must be {'user': '<dns-1123 label>'}"
-            )
         if await self.k8s.get_claim(user) is not None:
             return self._error(409, "user exists")
         token = secrets.token_urlsafe(32)
@@ -932,7 +1027,7 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
         if claim is None:
             return self._error(404, "not found")
         token, cookie_user = self.credentials(request.headers, request.cookies)
-        if not self._authorized(claim, token, cookie_user, user):
+        if not self._authorized(claim, token, cookie_user, user, self.remote_user(request.headers)):
             return self._error(401, "unauthorized")
         sandbox = await self._sandbox_of(claim)
         return JSONResponse(
@@ -951,7 +1046,7 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
         if claim is None:
             return self._error(404, "not found")
         token, cookie_user = self.credentials(request.headers, request.cookies)
-        if not self._authorized(claim, token, cookie_user, user):
+        if not self._authorized(claim, token, cookie_user, user, self.remote_user(request.headers)):
             return self._error(401, "unauthorized")
         if self._mutation_from_cookie(request.headers, "DELETE", cookie_user):
             return self._error(403, "cross-origin request rejected")
@@ -960,9 +1055,37 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
         async with self.state.lock:
             self.state.last_activity.pop(user, None)
             self.state.in_flight.pop(user, None)
-        return JSONResponse(
+        return JSONResponse({"user": user, "note": "claim deleted; sandbox and PVC cascade"})
-            {"user": user, "note": "claim deleted; sandbox and PVC cascade"}
+
-        )
+    async def recreate(self, request: Request) -> Response:
+        """Delete and re-provision the SSO user's sandbox for a clean start.
+
+        SSO-only: the identity comes from the trusted proxy header. Deleting the
+        claim cascades to the sandbox pod and its PVC, wiping user state; we poll
+        until the claim is fully gone (finalizers) before recreating to avoid a
+        name-collision 409, then reconnect.
+        """
+        remote = self.remote_user(request.headers)
+        if not remote:
+            return self._error(401, "unauthorized")
+        _token, cookie_user = self.credentials(request.headers, request.cookies)
+        if cookie_user is not None and cookie_user != remote:
+            return self._error(401, "unauthorized")
+        if self._mutation_from_cookie(request.headers, "POST", cookie_user):
+            return self._error(403, "cross-origin request rejected")
+        await self.k8s.delete_claim(remote)
+        self._clear_handshake(remote)
+        async with self.state.lock:
+            self.state.last_activity.pop(remote, None)
+            self.state.in_flight.pop(remote, None)
+        # Wait out any finalizer so the claim name is reusable.
+        for _ in range(30):
+            if await self.k8s.get_claim(remote) is None:
+                break
+            await asyncio.sleep(1)
+        response = RedirectResponse(f"/u/{remote}/", status_code=303)
+        await self._sso_session(remote, request.headers, request.cookies, response)
+        return response
 
     # -- HTTP proxy --------------------------------------------------------
 
@@ -970,41 +1093,38 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
         user = request.path_params["user"]
         if not valid_user(user):
             return self._error(404, "unknown user")
+        remote = self.remote_user(request.headers)
         claim = await self.k8s.get_claim(user)
         if claim is None:
+            if remote == user:
+                # SSO first hit straight at a deep link: let landing bootstrap.
+                return RedirectResponse("/", status_code=303)
             return self._error(404, "unknown user")
         token, cookie_user = self.credentials(request.headers, request.cookies)
-        if not self._authorized(claim, token, cookie_user, user):
+        if remote == user and not (cookie_user == user and token_matches(claim, token)):
+            # SSO user without a valid session cookie: bootstrap, then continue.
+            return RedirectResponse("/", status_code=303)
+        if not self._authorized(claim, token, cookie_user, user, remote):
             return self._error(401, "unauthorized")
         if self._mutation_from_cookie(request.headers, request.method, cookie_user):
             return self._error(403, "cross-origin request rejected")
 
         if not await self._acquire(user):
-            return self._error(
+            return self._error(503, "gateway busy, retry shortly", {"Retry-After": "5"})
-                503, "gateway busy, retry shortly", {"Retry-After": "5"}
-            )
         streaming = False
         try:
             sandbox, fqdn = await self._resolve_sandbox(user, claim)
             host = request.headers.get("host", "")
-            cookie, _, was_cached = await self.dsh_cookie(
+            cookie, _, was_cached = await self.dsh_cookie(user, sandbox, fqdn, host)
-                user, sandbox, fqdn, host
-            )
             body = await self._read_body(request)
 
-            upstream = await self._send_upstream(
+            upstream = await self._send_upstream(request, user, fqdn, cookie, body)
-                request, user, fqdn, cookie, body
-            )
             if upstream.status_code == 401 and was_cached:
                 # The cached DSH cookie expired (pod restart, logout, ...):
                 # handshake once more and replay the (already buffered) request.
                 await upstream.aclose()
-                cookie, _, _ = await self.dsh_cookie(
+                cookie, _, _ = await self.dsh_cookie(user, sandbox, fqdn, host, force=True)
-                    user, sandbox, fqdn, host, force=True
+                upstream = await self._send_upstream(request, user, fqdn, cookie, body)
-                )
-                upstream = await self._send_upstream(
-                    request, user, fqdn, cookie, body
-                )
 
             response = StreamingResponse(
                 self._relay(user, upstream),
@@ -1044,8 +1164,7 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
         headers = {
             key: value
             for key, value in request.headers.items()
-            if key.lower() not in OWNED_REQUEST_HEADERS
+            if key.lower() not in OWNED_REQUEST_HEADERS and key.lower() != "content-length"
-            and key.lower() != "content-length"
         }
         host = request.headers.get("host", "")
         headers["host"] = host
@@ -1057,9 +1176,7 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
         else:
             headers["x-forwarded-for"] = ""
         port = host.rsplit(":", 1)[1] if ":" in host else ""
-        headers["x-forwarded-port"] = port or (
+        headers["x-forwarded-port"] = port or ("443" if request.url.scheme == "https" else "80")
-            "443" if request.url.scheme == "https" else "80"
-        )
 
         last_error: Exception | None = None
         for attempt in range(self.settings.upstream_attempts):
@@ -1143,7 +1260,9 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
         if claim is None:
             return await self._ws_reject(websocket, 4401)
         token, cookie_user = self.credentials(websocket.headers, websocket.cookies)
-        if not self._authorized(claim, token, cookie_user, user):
+        if not self._authorized(
+            claim, token, cookie_user, user, self.remote_user(websocket.headers)
+        ):
             return await self._ws_reject(websocket, 4401)
         if cookie_user is not None and not same_origin(websocket.headers):
             return await self._ws_reject(websocket, 4401)
@@ -1167,9 +1286,7 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
                 if ":" in upstream_host and not upstream_host.startswith("["):
                     upstream_host = f"[{upstream_host}]"  # IPv6 literal
                 authority = f"{upstream_host}:{self.settings.dsh_port}"
-                cookie, _, _ = await self.dsh_cookie(
+                cookie, _, _ = await self.dsh_cookie(user, sandbox, fqdn, authority)
-                    user, sandbox, fqdn, authority
-                )
                 url = f"ws://{authority}/{path}"
                 query = filtered_query(websocket.url.query)
                 if query:
@@ -1188,9 +1305,7 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
                     headers["x-forwarded-for"] = websocket.client.host
                 subprotocols = [
                     part.strip()
-                    for part in websocket.headers.get(
+                    for part in websocket.headers.get("sec-websocket-protocol", "").split(",")
-                        "sec-websocket-protocol", ""
-                    ).split(",")
                     if part.strip()
                 ]
                 upstream_cm = self.ws_connect(
@@ -1206,16 +1321,12 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
                 return await self._ws_reject(websocket, 1011)
 
             try:
-                await websocket.accept(
+                await websocket.accept(subprotocol=getattr(upstream, "subprotocol", None))
-                    subprotocol=getattr(upstream, "subprotocol", None)
-                )
             except RuntimeError:
                 pass
             await self._pump(websocket, upstream)
             with contextlib.suppress(Exception):
-                await websocket.close(
+                await websocket.close(code=self._upstream_close_code(upstream))
-                    code=self._upstream_close_code(upstream)
-                )
         finally:
             if upstream_cm is not None:
                 with contextlib.suppress(Exception):
@@ -1255,9 +1366,7 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
             asyncio.create_task(client_to_upstream()),
             asyncio.create_task(upstream_to_client()),
         ]
-        done, pending = await asyncio.wait(
+        done, pending = await asyncio.wait(tasks, return_when=asyncio.FIRST_COMPLETED)
-            tasks, return_when=asyncio.FIRST_COMPLETED
-        )
         for task in pending:
             task.cancel()
         await asyncio.gather(*done, *pending, return_exceptions=True)
@@ -1284,17 +1393,13 @@ against the JSON API. The browser session is an HttpOnly cookie.</p>
                     continue
                 if self.state.in_flight.get(user, 0) > 0:
                     continue  # requests in flight => the user is active
-                idle = time.time() - self.state.last_activity.setdefault(
+                idle = time.time() - self.state.last_activity.setdefault(user, time.time())
-                    user, time.time()
-                )
                 if idle < self.settings.idle_timeout:
                     continue
                 self.state.maintenance[user] = True
             try:
                 print(f"suspending {user} (idle {int(idle)}s)", flush=True)
-                await self.k8s.patch_operating_mode(
+                await self.k8s.patch_operating_mode(sandbox["metadata"]["name"], "Suspended")
-                    sandbox["metadata"]["name"], "Suspended"
-                )
                 self._clear_handshake(user)
             finally:
                 async with self.state.lock:
@@ -1345,18 +1450,15 @@ def create_app(
     k8s = k8s if k8s is not None else Kubernetes(settings.namespace)
     owns_http_client = http_client is None
     if http_client is None:
-        http_client = httpx.AsyncClient(
+        http_client = httpx.AsyncClient(follow_redirects=False, timeout=settings.http_timeout)
-            follow_redirects=False, timeout=settings.http_timeout
+    gateway = Gateway(settings, k8s, http_client, ws_connect or websockets.connect)
-        )
-    gateway = Gateway(
-        settings, k8s, http_client, ws_connect or websockets.connect
-    )
     routes = [
         Route("/healthz", gateway.healthz),
         Route("/", gateway.landing),
         Route("/users", gateway.signup, methods=["POST"]),
         Route("/login", gateway.login, methods=["POST"]),
         Route("/logout", gateway.logout, methods=["POST"]),
+        Route("/recreate", gateway.recreate, methods=["POST"]),
         Route("/users/{user}", gateway.get_user),
         Route("/users/{user}", gateway.delete_user, methods=["DELETE"]),
         Route("/u/{user}", gateway.redirect_to_workspace),

examples/dsh-agents-as-a-service/gateway/requirements-dev.txt

@@ -1,4 +1,5 @@
 -r requirements.txt
 pytest==9.1.1
 pytest-asyncio==1.4.0
+pytest-cov==7.1.0
 ruff==0.17.1

examples/dsh-agents-as-a-service/gateway/test_gateway.py

@@ -45,9 +45,7 @@ FQDN = "dsh-alice-sbx.test-ns.svc.cluster.local"
 
 def dsh_response(status=200, content=b"", headers=None):
     """A MockTransport response that is a real stream (``aiter_raw`` works)."""
-    return httpx.Response(
+    return httpx.Response(status, headers=headers, stream=httpx.ByteStream(content))
-        status, headers=headers, stream=httpx.ByteStream(content)
-    )
 
 
 # --- fakes -----------------------------------------------------------------
@@ -62,6 +60,7 @@ class FakeK8s:
         self.created = []
         self.deleted = []
         self.patches = []
+        self.token_patches = []
         self.conflict_on_create = False
         self.get_claim_error = None
         self.patch_error = None
@@ -92,6 +91,15 @@ class FakeK8s:
             raise self.patch_error
         self.patches.append((name, mode))
 
+    async def patch_token(self, user, token_hash):
+        if self.patch_error is not None:
+            raise self.patch_error
+        self.token_patches.append((user, token_hash))
+        claim = self.claims.get(user)
+        if claim is not None:
+            annotations = claim.setdefault("metadata", {}).setdefault("annotations", {})
+            annotations["aaas.example.com/token-sha256"] = token_hash
+
     async def get_pod(self, name):
         return self.pods.get(name)
 
@@ -106,9 +114,7 @@ class FakeUpstream:
         self.requests = []
         self.handshake_requests = []
         self.handshake_status = 303
-        self.handshake_cookies = [
+        self.handshake_cookies = ["dsh-auth-a=one; Path=/; HttpOnly; SameSite=Strict"]
-            "dsh-auth-a=one; Path=/; HttpOnly; SameSite=Strict"
-        ]
         self.proxy_handler = None
         self.proxy_requests = []
 
@@ -128,9 +134,7 @@ class FakeUpstream:
         self.proxy_requests.append(request)
         if self.proxy_handler is not None:
             return self.proxy_handler(request)
-        return dsh_response(
+        return dsh_response(200, b"hello from DSH", {"content-type": "text/plain"})
-            200, b"hello from DSH", {"content-type": "text/plain"}
-        )
 
 
 class FakeWS:
@@ -195,9 +199,7 @@ def add_user(k8s, user="alice", token=TOKEN, ready=True, pod_name=None, suffix="
         "metadata": {
             "name": claim_name(user),
             "annotations": {
-                "aaas.example.com/token-sha256": hashlib.sha256(
+                "aaas.example.com/token-sha256": hashlib.sha256(token.encode()).hexdigest()
-                    token.encode()
-                ).hexdigest()
             },
         },
         "status": {"sandbox": {"name": sandbox_name}},
@@ -212,10 +214,7 @@ def add_user(k8s, user="alice", token=TOKEN, ready=True, pod_name=None, suffix="
         },
     }
     k8s.pods[pod_name] = {"metadata": {"name": pod_name, "uid": POD_UID}}
-    k8s.logs[pod_name] = (
+    k8s.logs[pod_name] = f"booting\ndsh web: http://10.0.0.7:3080/?token={TOKEN}-launch\n"
-        "booting\n"
-        f"dsh web: http://10.0.0.7:3080/?token={TOKEN}-launch\n"
-    )
     return sandbox_name, pod_name
 
 
@@ -231,9 +230,7 @@ def env():
     )
     k8s = FakeK8s()
     upstream = FakeUpstream()
-    http_client = httpx.AsyncClient(
+    http_client = httpx.AsyncClient(transport=httpx.MockTransport(upstream), timeout=5)
-        transport=httpx.MockTransport(upstream), timeout=5
-    )
     ws_connect = FakeWSConnect()
     app = create_app(
         settings=settings,
@@ -263,9 +260,7 @@ def asgi_client(env, cookies=None):
 
 
 def stale_handshake(env):
-    env.gateway.state.handshake[("alice", POD_UID, "gateway.test")] = (
+    env.gateway.state.handshake[("alice", POD_UID, "gateway.test")] = "dsh-auth-a=stale"
-        "dsh-auth-a=stale"
-    )
 
 
 # --- pure helpers ----------------------------------------------------------
@@ -407,9 +402,7 @@ def test_token_matches_is_timing_safe_hash_check():
     claim = {
         "metadata": {
             "annotations": {
-                "aaas.example.com/token-sha256": hashlib.sha256(
+                "aaas.example.com/token-sha256": hashlib.sha256(TOKEN.encode()).hexdigest()
-                    TOKEN.encode()
-                ).hexdigest()
             }
         }
     }
@@ -431,6 +424,7 @@ def test_settings_from_env(monkeypatch):
     monkeypatch.setenv("COOKIE_MAX_AGE", "100")
     monkeypatch.setenv("MAX_BODY_MB", "2")
     monkeypatch.setenv("HTTP_TIMEOUT", "12.5")
+    monkeypatch.setenv("AUTH_PROXY_HEADER", "X-Forwarded-User")
     settings = Settings.from_env()
     assert settings.namespace == "ns-x"
     assert settings.pool == "pool-x"
@@ -443,6 +437,12 @@ def test_settings_from_env(monkeypatch):
     assert settings.cookie_max_age == 100
     assert settings.max_body_bytes == 2 * 1024 * 1024
     assert settings.http_timeout == 12.5
+    assert settings.auth_proxy_header == "X-Forwarded-User"
+
+
+def test_settings_auth_proxy_header_defaults_to_none(monkeypatch):
+    monkeypatch.delenv("AUTH_PROXY_HEADER", raising=False)
+    assert Settings.from_env().auth_proxy_header is None
 
 
 # --- Kubernetes adapter ----------------------------------------------------
@@ -467,14 +467,9 @@ async def test_kubernetes_create_claim_body(monkeypatch):
     body = args[4]
     assert body["metadata"]["name"] == "dsh-alice"
     assert body["metadata"]["annotations"]["aaas.example.com/token-sha256"] == "hash"
-    assert (
+    assert body["metadata"]["annotations"]["aaas.example.com/managed-by"] == "dsh-gateway"
-        body["metadata"]["annotations"]["aaas.example.com/managed-by"]
-        == "dsh-gateway"
-    )
     assert body["spec"]["warmPoolRef"]["name"] == "test-pool"
-    assert body["spec"]["additionalPodMetadata"]["labels"][
+    assert body["spec"]["additionalPodMetadata"]["labels"]["sandbox.users.io/dsh-user"] == "alice"
-        "sandbox.users.io/dsh-user"
-    ] == "alice"
 
 
 @pytest.mark.asyncio
@@ -606,9 +601,7 @@ async def test_landing_page_has_signup_and_login_forms(env):
 
 @pytest.mark.asyncio
 async def test_landing_page_shows_session_when_cookie_present(env):
-    async with asgi_client(
+    async with asgi_client(env, cookies={"dsh_gw_session": f"alice:{TOKEN}"}) as client:
-        env, cookies={"dsh_gw_session": f"alice:{TOKEN}"}
-    ) as client:
         response = await client.get("/")
     assert "Signed in as" in response.text
     assert "/u/alice/" in response.text
@@ -626,9 +619,7 @@ async def test_workspace_redirect_adds_trailing_slash(env):
 
 
 @pytest.mark.asyncio
-@pytest.mark.parametrize(
+@pytest.mark.parametrize("bad_user", ["Alice", "-alice", "alice-", "", "a_b", 123, None, "a" * 60])
-    "bad_user", ["Alice", "-alice", "alice-", "", "a_b", 123, None, "a" * 60]
-)
 async def test_signup_rejects_invalid_dns1123_label(env, bad_user):
     async with asgi_client(env) as client:
         response = await client.post("/users", json={"user": bad_user})
@@ -762,9 +753,7 @@ async def test_login_json_and_failures(env):
 
 @pytest.mark.asyncio
 async def test_logout_clears_cookie(env):
-    async with asgi_client(
+    async with asgi_client(env, cookies={"dsh_gw_session": f"alice:{TOKEN}"}) as client:
-        env, cookies={"dsh_gw_session": f"alice:{TOKEN}"}
-    ) as client:
         response = await client.post("/logout")
     assert response.status_code == 303
     assert response.headers["location"] == "/"
@@ -779,12 +768,8 @@ async def test_logout_clears_cookie(env):
 async def test_get_user_requires_valid_bearer_or_cookie(env):
     add_user(env.k8s)
     async with asgi_client(env) as client:
-        forbidden = await client.get(
+        forbidden = await client.get("/users/alice", headers={"Authorization": "Bearer wrong"})
-            "/users/alice", headers={"Authorization": "Bearer wrong"}
+        bearer = await client.get("/users/alice", headers={"Authorization": f"Bearer {TOKEN}"})
-        )
-        bearer = await client.get(
-            "/users/alice", headers={"Authorization": f"Bearer {TOKEN}"}
-        )
         cookie = await client.get(
             "/users/alice",
             headers={"Cookie": f"dsh_gw_session=alice:{TOKEN}"},
@@ -820,9 +805,7 @@ async def test_invalid_user_in_path_is_404(env, path):
 async def test_delete_user_requires_auth(env):
     add_user(env.k8s)
     async with asgi_client(env) as client:
-        response = await client.delete(
+        response = await client.delete("/users/alice", headers={"Authorization": "Bearer wrong"})
-            "/users/alice", headers={"Authorization": "Bearer wrong"}
-        )
     assert response.status_code == 401
     assert env.k8s.deleted == []
 
@@ -834,12 +817,8 @@ async def test_delete_with_cookie_requires_same_origin(env):
     cookies = {"dsh_gw_session": f"alice:{TOKEN}"}
     async with asgi_client(env, cookies=cookies) as client:
         missing = await client.delete("/users/alice")
-        cross = await client.delete(
+        cross = await client.delete("/users/alice", headers={"Origin": "http://evil.test"})
-            "/users/alice", headers={"Origin": "http://evil.test"}
+        good = await client.delete("/users/alice", headers={"Origin": "http://gateway.test"})
-        )
-        good = await client.delete(
-            "/users/alice", headers={"Origin": "http://gateway.test"}
-        )
     assert missing.status_code == 403
     assert cross.status_code == 403
     assert good.status_code == 200
@@ -851,9 +830,7 @@ async def test_delete_with_cookie_requires_same_origin(env):
 async def test_delete_with_bearer_does_not_need_origin(env):
     add_user(env.k8s)
     async with asgi_client(env) as client:
-        response = await client.delete(
+        response = await client.delete("/users/alice", headers={"Authorization": f"Bearer {TOKEN}"})
-            "/users/alice", headers={"Authorization": f"Bearer {TOKEN}"}
-        )
     assert response.status_code == 200
 
 
@@ -862,9 +839,7 @@ async def test_delete_missing_claim_is_404(env):
     add_user(env.k8s)
     env.k8s.claims.clear()
     async with asgi_client(env) as client:
-        response = await client.delete(
+        response = await client.delete("/users/alice", headers={"Authorization": f"Bearer {TOKEN}"})
-            "/users/alice", headers={"Authorization": f"Bearer {TOKEN}"}
-        )
     assert response.status_code == 404
 
 
@@ -939,9 +914,9 @@ async def test_missing_cookie_in_handshake_is_503(env):
 @pytest.mark.asyncio
 async def test_pod_annotation_overrides_sandbox_name(env):
     sandbox_name, pod_name = add_user(env.k8s)
-    env.k8s.sandboxes[sandbox_name]["metadata"]["annotations"][
+    env.k8s.sandboxes[sandbox_name]["metadata"]["annotations"]["agents.x-k8s.io/pod-name"] = (
-        "agents.x-k8s.io/pod-name"
+        "custom-pod"
-    ] = "custom-pod"
+    )
     env.k8s.pods["custom-pod"] = {"metadata": {"uid": "other-uid"}}
     env.k8s.logs["custom-pod"] = env.k8s.logs[pod_name]
     async with asgi_client(env, cookies={"dsh_gw_session": f"alice:{TOKEN}"}) as client:
@@ -1063,9 +1038,7 @@ async def test_proxy_upstream_connection_error_is_502(env):
 @pytest.mark.asyncio
 async def test_proxy_body_limit_returns_413(env):
     add_user(env.k8s)
-    env.gateway.settings = Settings(
+    env.gateway.settings = Settings(**{**env.settings.__dict__, "max_body_bytes": 4})
-        **{**env.settings.__dict__, "max_body_bytes": 4}
-    )
     async with asgi_client(env) as client:
         response = await client.post(
             "/u/alice/api/echo",
@@ -1175,9 +1148,7 @@ async def test_proxied_requests_use_the_stream_timeout(env, monkeypatch):
         "server": ("gateway.test", 80),
         "path_params": {"user": "alice", "path": "events"},
     }
-    response = await env.gateway._send_upstream(
+    response = await env.gateway._send_upstream(Request(scope), "alice", FQDN, "dsh-auth-a=1", b"")
-        Request(scope), "alice", FQDN, "dsh-auth-a=1", b""
-    )
     await response.aclose()
 
     assert captured["timeout"].read is None
@@ -1340,9 +1311,7 @@ async def test_sweeper_skips_claim_it_does_not_own(env):
     assert "alice" not in env.gateway.state.last_activity
 
     # ...and does not suspend it even when it looks long-idle.
-    env.gateway.state.last_activity["alice"] = (
+    env.gateway.state.last_activity["alice"] = time.time() - env.settings.idle_timeout - 10
-        time.time() - env.settings.idle_timeout - 10
-    )
     await env.gateway.sweep_once()
     assert env.k8s.patches == []
 
@@ -1351,9 +1320,7 @@ async def test_sweeper_skips_claim_it_does_not_own(env):
 async def test_sweeper_suspends_idle_ready_sandbox(env):
     env.k8s.claims["alice"] = ready_claim()
     env.k8s.sandboxes["dsh-alice-sbx"] = ready_sandbox()
-    env.gateway.state.last_activity["alice"] = (
+    env.gateway.state.last_activity["alice"] = time.time() - env.settings.idle_timeout - 10
-        time.time() - env.settings.idle_timeout - 10
-    )
     env.gateway.state.handshake[("alice", POD_UID, "gateway.test")] = "dsh-auth-a=x"
 
     await env.gateway.sweep_once()
@@ -1413,3 +1380,146 @@ async def test_sweeper_survives_transient_api_error(env):
 
     # The per-user maintenance flag must be released even on failure.
     assert env.gateway.state.maintenance["alice"] is False
+
+
+# --- SSO (reverse-proxy identity) ------------------------------------------
+
+
+def enable_sso(env, header="X-Forwarded-User"):
+    """Flip an env into SSO mode: the gateway trusts the named identity header."""
+    env.settings = Settings(**{**env.settings.__dict__, "auth_proxy_header": header})
+    env.gateway.settings = env.settings
+    return env
+
+
+def test_remote_user_none_when_sso_disabled(env):
+    assert env.gateway.remote_user({"X-Forwarded-User": "alice"}) is None
+
+
+def test_remote_user_returns_valid_and_rejects_invalid(env):
+    enable_sso(env)
+    g = env.gateway
+    assert g.remote_user({"X-Forwarded-User": "alice"}) == "alice"
+    assert g.remote_user({"X-Forwarded-User": "  bob "}) == "bob"
+    assert g.remote_user({"X-Forwarded-User": "UPPER"}) is None
+    assert g.remote_user({"X-Forwarded-User": "bad name"}) is None
+    assert g.remote_user({"X-Forwarded-User": ""}) is None
+    assert g.remote_user({}) is None
+
+
+@pytest.mark.asyncio
+async def test_sso_landing_new_user_shows_provisioning(env):
+    enable_sso(env)
+    async with asgi_client(env) as client:
+        response = await client.get("/", headers={"X-Forwarded-User": "alice"})
+    assert response.status_code == 200
+    assert "text/html" in response.headers["content-type"]
+    assert "Signed in as <strong>alice</strong>" in response.text
+    assert "Provisioning" in response.text
+    assert "Recreate sandbox" not in response.text
+    assert re_cookie_user(response.headers["set-cookie"]) == "alice"
+    assert [c[0] for c in env.k8s.created] == ["alice"]
+    assert env.k8s.token_patches == []
+
+
+@pytest.mark.asyncio
+async def test_sso_landing_ready_connects_and_offers_recreate_only(env):
+    enable_sso(env)
+    add_user(env.k8s)
+    async with asgi_client(env, cookies={"dsh_gw_session": f"alice:{TOKEN}"}) as client:
+        response = await client.get("/", headers={"X-Forwarded-User": "alice"})
+    assert response.status_code == 200
+    assert "Signed in as <strong>alice</strong>" in response.text
+    assert "Recreate sandbox" in response.text
+    # No signup/token forms for SSO users.
+    assert 'action="/users"' not in response.text
+    assert 'action="/login"' not in response.text
+    # Auto-connects to the workspace.
+    assert "url=/u/alice/" in response.text
+    assert env.k8s.created == []
+    assert env.k8s.token_patches == []
+
+
+@pytest.mark.asyncio
+async def test_sso_landing_rotates_token_when_session_missing(env):
+    enable_sso(env)
+    add_user(env.k8s)
+    async with asgi_client(env) as client:
+        response = await client.get("/", headers={"X-Forwarded-User": "alice"})
+    assert response.status_code == 200
+    assert "Recreate sandbox" in response.text
+    assert re_cookie_user(response.headers["set-cookie"]) == "alice"
+    assert [p[0] for p in env.k8s.token_patches] == ["alice"]
+    assert env.k8s.created == []
+
+
+@pytest.mark.asyncio
+async def test_recreate_deletes_and_reprovisions(env):
+    enable_sso(env)
+    add_user(env.k8s)
+    async with asgi_client(env) as client:
+        response = await client.post("/recreate", headers={"X-Forwarded-User": "alice"})
+    assert response.status_code == 303
+    assert response.headers["location"] == "/u/alice/"
+    assert env.k8s.deleted == ["alice"]
+    assert [c[0] for c in env.k8s.created] == ["alice"]
+    assert re_cookie_user(response.headers["set-cookie"]) == "alice"
+
+
+@pytest.mark.asyncio
+async def test_recreate_requires_sso(env):
+    add_user(env.k8s)
+    async with asgi_client(env) as client:
+        response = await client.post("/recreate", headers={"X-Forwarded-User": "alice"})
+    assert response.status_code == 401
+    assert env.k8s.deleted == []
+
+
+@pytest.mark.asyncio
+async def test_recreate_rejects_cross_origin(env):
+    enable_sso(env)
+    add_user(env.k8s)
+    async with asgi_client(env, cookies={"dsh_gw_session": f"alice:{TOKEN}"}) as client:
+        response = await client.post(
+            "/recreate",
+            headers={"X-Forwarded-User": "alice", "Origin": "http://evil.test"},
+        )
+    assert response.status_code == 403
+    assert env.k8s.deleted == []
+
+
+@pytest.mark.asyncio
+async def test_sso_get_user_authorizes_via_header(env):
+    enable_sso(env)
+    add_user(env.k8s)
+    async with asgi_client(env) as client:
+        response = await client.get("/users/alice", headers={"X-Forwarded-User": "alice"})
+    assert response.status_code == 200
+    assert response.json()["user"] == "alice"
+
+
+@pytest.mark.asyncio
+async def test_sso_proxy_redirects_to_bootstrap_without_session(env):
+    enable_sso(env)
+    add_user(env.k8s)
+    async with asgi_client(env) as client:
+        response = await client.get("/u/alice/", headers={"X-Forwarded-User": "alice"})
+    assert response.status_code == 303
+    assert response.headers["location"] == "/"
+
+
+@pytest.mark.asyncio
+async def test_sso_proxy_redirects_to_bootstrap_when_claim_missing(env):
+    enable_sso(env)
+    async with asgi_client(env) as client:
+        response = await client.get("/u/alice/", headers={"X-Forwarded-User": "alice"})
+    assert response.status_code == 303
+    assert response.headers["location"] == "/"
+
+
+@pytest.mark.asyncio
+async def test_spoofed_header_ignored_when_sso_disabled(env):
+    add_user(env.k8s)
+    async with asgi_client(env) as client:
+        response = await client.get("/u/alice/", headers={"X-Forwarded-User": "alice"})
+    assert response.status_code == 401

examples/dsh-agents-as-a-service/manifests/00-prereqs.yaml

@@ -0,0 +1,44 @@
+# DSH "Agents as a Service" — prerequisites: namespace + shared provider keys.
+#
+# The dsh-provider-keys Secret is deliberately NOT committed with a usable
+# value. DEEPSEEK_API_KEY reaches every tenant sandbox (injected via envFrom
+# on the SandboxTemplate, stamped before any user exists — a warm-pool
+# constraint), so a real key committed here would be shared by every install
+# of this example. Generate a fresh value per install (README step 1;
+# scripts/e2e-kind.sh uses a throwaway). Use an upsert: this manifest already
+# creates the empty Secret, so a plain `kubectl create` would fail:
+#
+#   kubectl -n dsh-demo create secret generic dsh-provider-keys \
+#     --from-literal=DEEPSEEK_API_KEY="sk-..." \
+#     --dry-run=client -o yaml | kubectl apply -f -
+#
+# Optional: additional providers (OpenRouter, Gemini, NVIDIA, OpenAI, ...) go
+# in a second, optional Secret. The SandboxTemplate references it with
+# `optional: true`, so sandboxes start even when it does not exist, and every
+# key in it becomes an environment variable. Create it BEFORE the warm pool,
+# because pod env is stamped at pod creation:
+#
+#   kubectl -n dsh-demo create secret generic dsh-provider-keys-extra \
+#     --from-literal=OPENROUTER_API_KEY="sk-or-..." \
+#     --from-literal=GEMINI_API_KEY="..." \
+#     --from-literal=NVIDIA_API_KEY="nvapi-..." \
+#     --dry-run=client -o yaml | kubectl apply -f -
+#
+# Supported env names, precedence, shared-key caveats and the pod-refresh
+# procedure are in docs/optional-hardening.md.
+#
+# All the infrastructure in this example works without a real key; only
+# actual model calls need one.
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: dsh-demo
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: dsh-provider-keys
+  namespace: dsh-demo
+type: Opaque
+# stringData:
+#   DEEPSEEK_API_KEY: "sk-your-key-here"

examples/dsh-agents-as-a-service/manifests/10-sandboxtemplate.yaml

@@ -1,7 +1,10 @@
 # The reusable DSH Web blueprint. Warm pools stamp pod env BEFORE any user
-# exists, so per-user secrets cannot live in pod env; the shared provider key
+# exists, so per-user secrets cannot live in pod env; the shared provider keys
-# is injected via envFrom, and claims that would bypass the warm pool are
+# are injected via envFrom, and claims that would bypass the warm pool are
 # rejected outright (see 40-claim-rejected.yaml).
+#
+# A stripped-down single-tenant variant of this template (no warm pool, no
+# policy enforcement) lives in examples/minimal-single-tenant/.
 apiVersion: extensions.agents.x-k8s.io/v1beta1
 kind: SandboxTemplate
 metadata:
@@ -18,16 +21,31 @@ spec:
   # The gateway routes each user to their DSH Web instance by this name.
   service: true
 
-  # No gateway pod scopes ingress in this standalone demo, so the
+  # The example leaves NetworkPolicy to an optional, opt-in manifest
-  # NetworkPolicy is left unmanaged. A production platform would use
+  # (manifests/optional/network-policy/): the base walkthrough should not
-  # networkPolicyManagement: Managed and restrict ingress to its gateway on
+  # require a policy-capable CNI, and the controller's Managed secure default
-  # :3080 — with the shared provider key, that NetworkPolicy is the per-user
+  # only allows the sandbox-router, which this example does not deploy. If you
-  # isolation boundary.
+  # switch to Managed, define spec.networkPolicy explicitly or the gateway will
+  # be blocked. See docs/optional-hardening.md.
   networkPolicyManagement: Unmanaged
 
   podTemplate:
     spec:
-      # DSH Web is multi-arch (amd64 + arm64); no arch nodeSelector needed.
+      # DSH Web is multi-arch (amd64 + arm64); no arch nodeSelector is needed.
+      #
+      # OPTIONAL: run the sandbox under gVisor. Requires a RuntimeClass named
+      # "gvisor" and nodes that can run it; gVisor breaks `kubectl port-forward`
+      # into the sandbox (use the gateway). Existing Sandboxes snapshot their
+      # pod template, so enabling it later requires patching/recreating them.
+      # See docs/optional-hardening.md.
+      # runtimeClassName: gvisor
+      #
+      # OPTIONAL: pin sandboxes to a dedicated node pool (for example a gVisor
+      # pool). Replace this placeholder with a label your nodes actually carry;
+      # add a matching toleration if the pool is tainted. Active
+      # cluster-specific scheduling belongs in a local patch, not here.
+      # nodeSelector:
+      #   dsh.example.com/node-pool: dsh
       restartPolicy: "OnFailure"
       securityContext:
         runAsUser: 1000   # the 'node' user in the DSH image
@@ -41,11 +59,12 @@ spec:
         # with 0660 and crash-loops before the gateway can proxy to it.
         # OnRootMismatch skips that walk once the volume root already carries
         # the fsGroup ownership/mode applied on the first mount.
-        # Keep in sync with deploy/k8s/sandbox-template.yaml.
+        # Keep in sync with the minimal variant:
+        # examples/minimal-single-tenant/manifests/sandbox-template.yaml.
         fsGroupChangePolicy: OnRootMismatch
       containers:
         - name: dsh-web
-          image: ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.2
+          image: ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.3-r4
           imagePullPolicy: IfNotPresent
           ports:
             - name: web
@@ -53,6 +72,13 @@ spec:
           envFrom:
             - secretRef:
                 name: dsh-provider-keys
+            # Optional extra provider keys (OpenRouter, Gemini, NVIDIA, ...).
+            # The Secret may be absent; every key in it becomes an env var.
+            # Create it before the warm pool, because pod env is stamped at
+            # pod creation. See docs/optional-hardening.md.
+            - secretRef:
+                name: dsh-provider-keys-extra
+                optional: true
           env:
             # Empty => DSH derives links from the request Host, which the
             # gateway forwards (plus X-Forwarded-*). Point this at the
@@ -61,8 +87,10 @@ spec:
               value: ""
             # DSH Host/Origin-fences /api. The gateway forwards the browser's
             # Host, so DSH must trust the public gateway host. Empty is right
-            # for port-forward/localhost; for the optional Ingress set this to
+            # for port-forward/localhost; for either exposure variant set this
-            # the same host as 60-ingress.yaml (e.g. dsh.example.com).
+            # to the public host (e.g. dsh.example.com for
+            # manifests/exposure/ingress/60-ingress.yaml, or
+            # dsh-demo.example.com for the gateway-api-sso/ HTTPRoute).
             - name: DSH_TRUSTED_HOSTS
               value: ""
           # Probes target /favicon.svg: DSH gates / behind its launch-token

examples/dsh-agents-as-a-service/manifests/50-gateway.yaml

@@ -6,11 +6,19 @@
 #   POST /users, POST /login, ...    session cookie auth
 #   /u/<user>/...                    HTTP + WebSocket proxy to the user's DSH
 #
-# Image: ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway
+# Image: the release image published for this example, pinned by tag.
-# For local kind development you can build and load a local tag instead, then
+# imagePullPolicy: IfNotPresent lets a local kind build loaded under the same
-# change `image` below to it:
+# tag be used without a registry round-trip (scripts/e2e-kind.sh builds
-#   docker build -t dsh-aaas-gateway:demo gateway/
+# dsh-aaas-gateway:e2e and overrides this image).
-#   kind load docker-image dsh-aaas-gateway:demo
+#
+# SSO IS OPT-IN: this manifest runs the gateway with its own bearer/session
+# auth only, so AUTH_PROXY_HEADER is intentionally NOT set (see the env
+# block). To put GitHub OAuth in front of it, use
+# manifests/exposure/gateway-api-sso/.
+#
+# This Service is ClusterIP and is the only intended entry point: expose it
+# through exactly ONE of the documented variants in manifests/exposure/
+# (ingress/ or gateway-api-sso/), never both and never directly.
 apiVersion: v1
 kind: ServiceAccount
 metadata:
@@ -76,6 +84,15 @@ spec:
         app: dsh-gateway
     spec:
       serviceAccountName: dsh-gateway
+      # OPTIONAL: run the gateway under gVisor. Requires a RuntimeClass named
+      # "gvisor" and nodes that can run it. See docs/optional-hardening.md.
+      # runtimeClassName: gvisor
+      #
+      # OPTIONAL: pin the gateway to a dedicated node pool. Replace the
+      # placeholder with a label your nodes carry; add a toleration for a
+      # tainted pool. Keep active cluster-specific scheduling in a local patch.
+      # nodeSelector:
+      #   dsh.example.com/node-pool: dsh
       securityContext:
         runAsNonRoot: true
         runAsUser: 10000 # matches USER in gateway/Dockerfile
@@ -84,7 +101,7 @@ spec:
           type: RuntimeDefault
       containers:
         - name: gateway
-          image: ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway
+          image: ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox/dsh-agents-as-a-service/gateway:dsh-v0.2.1-rc.3-r4
           imagePullPolicy: IfNotPresent
           securityContext:
             allowPrivilegeEscalation: false
@@ -105,20 +122,36 @@ spec:
             # gateway created are swept: a claim applied by hand from the
             # resource-layer manifests carries no aaas.example.com/managed-by
             # annotation and is never suspended.
+            #
+            # These are the demo values (360/240). scripts/e2e-kind.sh
+            # overrides both to 60/120 with `kubectl set env` so the smoke
+            # test does not wait six minutes for the sweeper.
             - name: IDLE_TIMEOUT
-              value: "60"
+              value: "360"
             - name: WAKE_TIMEOUT
-              value: "120"
+              value: "240"
             # Container name inside the per-user sandbox pods whose logs carry
             # the DSH launch token.
             - name: DSH_CONTAINER
               value: dsh-web
-            # Cookie dsh_gw_session is HttpOnly + SameSite=Lax. Set to "true"
+            # Cookie dsh_gw_session is HttpOnly + SameSite=Lax. "false" keeps
-            # when this Service is reached over HTTPS (e.g. the optional
+            # the plain-HTTP demo usable through port-forward: a Secure cookie
-            # 60-ingress.yaml with TLS); "false" keeps the plain-HTTP demo
+            # is never sent over HTTP, so login would silently fail.
-            # usable via port-forward.
+            # HTTPS deployments (the ingress/ variant with TLS, or
+            # gateway-api-sso/, which terminates TLS at the Gateway) MUST set
+            # this to "true".
             - name: COOKIE_SECURE
               value: "false"
+            # SSO IS OPT-IN AND DISABLED HERE. With AUTH_PROXY_HEADER unset the
+            # gateway trusts only its own bearer/session auth and ignores every
+            # identity header. Enable it ONLY behind
+            # manifests/exposure/gateway-api-sso/, where oauth2-proxy is the
+            # sole route to this Service: set it to X-Forwarded-User, keep the
+            # Service ClusterIP and reachable only through the proxy, and
+            # terminate TLS in front of the gateway. Otherwise anyone who can
+            # reach :8080 can impersonate any user by sending that header.
+            # - name: AUTH_PROXY_HEADER
+            #   value: X-Forwarded-User
             # Reject proxied request bodies larger than this (413).
             - name: MAX_BODY_MB
               value: "32"

examples/dsh-agents-as-a-service/manifests/exposure/README.md

@@ -0,0 +1,156 @@
+# Exposing the gateway
+
+The base manifests deploy the gateway as a ClusterIP Service
+(`dsh-gateway:8080`) and expose nothing outside the cluster. WebSocket
+upgrades on `/u/<user>/**` are part of the contract, so the entry point must
+forward `Upgrade`/`Connection` headers (Traefik does by default).
+
+There are two **mutually exclusive** exposure variants. Pick exactly one:
+
+| Variant | Entry point | Authentication | TLS |
+| --- | --- | --- | --- |
+| [`ingress/60-ingress.yaml`](ingress/60-ingress.yaml) | Traefik `Ingress` | the gateway's own signup/session cookie | optional, recommended |
+| [`gateway-api-sso/`](gateway-api-sso/72-oauth2-proxy.yaml) | Gateway API `Gateway` + `HTTPRoute` | GitHub OAuth via oauth2-proxy, then the gateway cookie | required (the Gateway listener terminates it) |
+
+Applying both gives the gateway two entry points, and the SSO variant is only
+safe when the gateway is reachable **exclusively** through oauth2-proxy. Do not
+mix them.
+
+Each variant also ships a NetworkPolicy, applied by the same directory apply:
+
+- `ingress/61-networkpolicy.yaml` allows only Traefik pods to reach the gateway
+  on `8080`.
+- `gateway-api-sso/75-networkpolicies.yaml` allows only oauth2-proxy to reach
+  the gateway, only the Gateway implementation (Traefik) to reach oauth2-proxy,
+  and limits oauth2-proxy egress to DNS, public HTTPS (GitHub) and the gateway.
+
+The policies assume Traefik's `app.kubernetes.io/name: traefik` pod label.
+Adjust the selector for another implementation or a `hostNetwork` install; see
+[optional hardening](../../docs/optional-hardening.md) for the probe caveat and
+verification commands.
+
+## Applying a variant
+
+Run these commands from the example root
+(`examples/dsh-agents-as-a-service/`), the same working directory the example
+README uses.
+
+`kubectl apply -f manifests/` is **not recursive**: it applies only the
+top-level numbered files and does not descend into `exposure/`. Apply the base
+resources first, then the chosen variant explicitly:
+
+```bash
+# Base resources: namespace, template, warm pool, claims, gateway.
+kubectl apply -f manifests/
+
+# Plain Ingress exposure:
+kubectl apply -f manifests/exposure/ingress/
+
+# ... or SSO exposure (create the two Secrets and replace the example.com
+# placeholders first — see below):
+kubectl apply -f manifests/exposure/gateway-api-sso/
+```
+
+**Never use `kubectl apply -R`** (recursive): it would apply both variants at
+once and hand out a second, unauthenticated path to the same gateway. Apply the
+variant directory on purpose, or the individual files by name.
+
+`kubectl` only reads `.yaml`, `.yml` and `.json` files from a directory, so
+the `*.yaml.example` secret templates are skipped automatically; create the real
+Secrets imperatively (commands below) before applying the directory.
+
+## `ingress/`: plain Ingress, no SSO
+
+`60-ingress.yaml` routes a host through the cluster's Traefik
+(`ingressClassName: traefik`; k3s ships one) to the gateway Service.
+
+1. Replace the `dsh.example.com` host and the `dsh-example-tls` Secret name
+   with real values, or delete the `tls:` block to serve plain HTTP.
+2. Set `DSH_TRUSTED_HOSTS` in the SandboxTemplate to the same public host:
+   the gateway forwards the browser's `Host`, and DSH rejects unknown hosts on
+   `/api` (see `../10-sandboxtemplate.yaml`).
+3. Set `COOKIE_SECURE=true` on the gateway once the Ingress serves HTTPS:
+   `kubectl -n dsh-demo set env deploy/dsh-gateway COOKIE_SECURE=true`. The
+   base manifest keeps `false` so the plain-HTTP port-forward demo works; a
+   `Secure` cookie is never sent over HTTP, which silently breaks login.
+4. Do not attach buffering or compression middlewares to this router: they
+   break WebSocket upgrades and streaming.
+5. `61-networkpolicy.yaml` is part of this variant: it allows only Traefik pods
+   to reach the gateway on `8080`. Adjust its selector for another ingress
+   controller or `hostNetwork`; if kubelet probes fail, see the hardening doc.
+
+Verify: `curl -sI https://<host>/healthz` returns `200`.
+
+## `gateway-api-sso/`: TLS + GitHub OAuth
+
+`70-gateway.yaml` defines the TLS `Gateway`, `71-httproute.yaml` sends every
+request to oauth2-proxy, and `72-oauth2-proxy.yaml` authenticates the browser
+against GitHub and proxies to the gateway with `X-Forwarded-User` set.
+`75-networkpolicies.yaml` makes this the only network path to the gateway.
+
+Prerequisites:
+
+- Gateway API CRDs and a Gateway implementation installed;
+  `gatewayClassName: traefik` matches the Traefik Gateway provider. The CRD
+  version is pinned in `versions.env` (`GATEWAY_API_VERSION`).
+- The OAuth App credentials and a cookie secret, from
+  `73-oauth2-proxy-secret.yaml.example`.
+- A TLS certificate/key for the public host, from
+  `74-tls-secret.yaml.example`.
+- oauth2-proxy is pinned in the manifest to
+  `quay.io/oauth2-proxy/oauth2-proxy:v7.15.5` (`versions.env`:
+  `OAUTH2_PROXY_IMAGE`).
+
+Steps:
+
+```bash
+# 1. Real Secrets (the committed files are *.yaml.example templates).
+kubectl -n dsh-demo create secret generic oauth2-proxy \
+  --from-literal=client-id='<GitHub OAuth App client ID>' \
+  --from-literal=client-secret='<GitHub OAuth App client secret>' \
+  --from-literal=cookie-secret="$(python3 -c 'import secrets; print(secrets.token_urlsafe(32))')"
+kubectl -n dsh-demo create secret tls dsh-demo-tls --cert=tls.crt --key=tls.key
+
+# 2. Replace dsh-demo.example.com (70/71/72) and your-github-org (72) with
+#    the real public host and allowed GitHub organization.
+
+# 3. Enable SSO on the gateway and trust the public host in the template.
+kubectl -n dsh-demo set env deploy/dsh-gateway \
+  AUTH_PROXY_HEADER=X-Forwarded-User COOKIE_SECURE=true
+# then set DSH_TRUSTED_HOSTS=dsh-demo.example.com in the SandboxTemplate
+# (see ../10-sandboxtemplate.yaml) and re-apply it.
+
+# 4. Apply the variant.
+kubectl apply -f manifests/exposure/gateway-api-sso/
+```
+
+### SSO trust boundary
+
+`AUTH_PROXY_HEADER` is opt-in and deliberately unset in the base gateway
+manifest: the gateway ignores identity headers until it is set. Enabling SSO
+takes all of these:
+
+1. `AUTH_PROXY_HEADER=X-Forwarded-User` on `deploy/dsh-gateway` (step 3
+   above). Without it, oauth2-proxy's login has no effect on the gateway and
+   users are still asked for the gateway's own token.
+2. The gateway Service must be reachable **only through oauth2-proxy**: keep it
+   ClusterIP, route all browser traffic through the `HTTPRoute` →
+   oauth2-proxy → `dsh-gateway` chain, and never apply `ingress/` (or any
+   other path to the Service) while SSO is enabled. A client that can reach
+   `dsh-gateway:8080` directly can set `X-Forwarded-User` itself and
+   impersonate any user.
+3. Keep `75-networkpolicies.yaml` with the variant. It enforces the boundary in
+   the network layer (gateway ← oauth2-proxy ← Traefik, and limited oauth2-proxy
+   egress). A custom exposure without an equivalent policy has no network
+   enforcement.
+
+Also terminate TLS in front of the gateway (the Gateway listener does) and
+leave `COOKIE_SECURE=true` so the session cookie never travels in clear text.
+
+## Switching variants
+
+Delete the variant you had before applying the other one, e.g.
+`kubectl delete -f manifests/exposure/ingress/`, and revert
+`AUTH_PROXY_HEADER`/`COOKIE_SECURE` on the gateway. Verify with
+`kubectl -n dsh-demo get ingress,gateway,httproute` that exactly one path to
+the gateway remains.

examples/dsh-agents-as-a-service/manifests/exposure/gateway-api-sso/70-gateway.yaml

@@ -0,0 +1,25 @@
+# Browser entry point (TLS) for the gateway-api-sso variant: terminates TLS
+# for dsh-demo.example.com and routes through 71-httproute.yaml to
+# oauth2-proxy, which authenticates the browser before the gateway.
+# Mutually exclusive with ../../ingress/ (see ../../README.md). The
+# "dsh-demo-tls" Secret comes from 74-tls-secret.yaml.example.
+apiVersion: gateway.networking.k8s.io/v1
+kind: Gateway
+metadata:
+  name: dsh-gateway
+  namespace: dsh-demo
+  labels:
+    app.kubernetes.io/part-of: dsh-demo
+spec:
+  gatewayClassName: traefik
+  listeners:
+    - name: https
+      port: 8443
+      protocol: HTTPS
+      tls:
+        mode: Terminate
+        certificateRefs:
+          - name: dsh-demo-tls
+      allowedRoutes:
+        namespaces:
+          from: Same

examples/dsh-agents-as-a-service/manifests/exposure/gateway-api-sso/71-httproute.yaml

@@ -0,0 +1,23 @@
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: dsh-gateway
+  namespace: dsh-demo
+  labels:
+    app.kubernetes.io/part-of: dsh-demo
+spec:
+  parentRefs:
+    - name: dsh-gateway
+      namespace: dsh-demo
+      sectionName: https
+  hostnames:
+    # TODO: replace with the actual public FQDN before applying.
+    - dsh-demo.example.com
+  rules:
+    - backendRefs:
+        # Route through oauth2-proxy (GitHub OAuth) first; it authenticates the
+        # browser and forwards to dsh-gateway:8080 with X-Forwarded-User set.
+        # The gateway only trusts that header when AUTH_PROXY_HEADER is set on
+        # its Deployment — see 72-oauth2-proxy.yaml and ../README.md.
+        - name: oauth2-proxy
+          port: 4180

examples/dsh-agents-as-a-service/manifests/exposure/gateway-api-sso/72-oauth2-proxy.yaml

@@ -0,0 +1,145 @@
+# oauth2-proxy — GitHub OAuth login in front of the dsh-gateway.
+#
+# Runs as a reverse proxy: it authenticates the browser against GitHub
+# (restricted to a configured organization), then forwards the request to
+# the dsh-gateway Service with the authenticated identity in X-Forwarded-User
+# (plus X-Auth-Request-* via --set-xauthrequest). The gateway trusts that
+# header only when AUTH_PROXY_HEADER is set on its Deployment.
+#
+# ENABLING SSO TAKES BOTH SIDES (see ../../../exposure/README.md):
+#   1. Set AUTH_PROXY_HEADER=X-Forwarded-User on deploy/dsh-gateway, otherwise
+#      the gateway ignores the header and the login is cosmetic:
+#        kubectl -n dsh-demo set env deploy/dsh-gateway \
+#          AUTH_PROXY_HEADER=X-Forwarded-User COOKIE_SECURE=true
+#   2. Make dsh-gateway reachable ONLY through this proxy: keep the Service
+#      ClusterIP, route browser traffic through 71-httproute.yaml, and do not
+#      apply ../ingress/ (or anything else that reaches the gateway). A
+#      client that can reach dsh-gateway:8080 can spoof X-Forwarded-User and
+#      impersonate any user.
+#
+# 75-networkpolicies.yaml enforces that boundary at the network layer: the
+# gateway accepts traffic only from oauth2-proxy pods, oauth2-proxy only from
+# the Gateway implementation, and oauth2-proxy egress is limited to DNS,
+# public HTTPS and the gateway. Apply it with this variant.
+#
+# TLS terminates at the Gateway listener (70-gateway.yaml); keep
+# --cookie-secure=true and COOKIE_SECURE=true on the gateway.
+#
+# The image is pinned to quay.io/oauth2-proxy/oauth2-proxy:v7.15.5
+# (versions.env: OAUTH2_PROXY_IMAGE). Credentials come from the
+# "oauth2-proxy" Secret (see 73-oauth2-proxy-secret.yaml.example); this
+# manifest never carries secrets.
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: oauth2-proxy
+  namespace: dsh-demo
+  labels:
+    app: oauth2-proxy
+    app.kubernetes.io/part-of: dsh-demo
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: oauth2-proxy
+  template:
+    metadata:
+      labels:
+        app: oauth2-proxy
+        app.kubernetes.io/part-of: dsh-demo
+    spec:
+      # OPTIONAL: run the proxy under gVisor and/or pin it to a node pool.
+      # See ../../../docs/optional-hardening.md.
+      # runtimeClassName: gvisor
+      # nodeSelector:
+      #   dsh.example.com/node-pool: dsh
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 2000
+        runAsGroup: 2000
+        seccompProfile:
+          type: RuntimeDefault
+      containers:
+        - name: oauth2-proxy
+          image: quay.io/oauth2-proxy/oauth2-proxy:v7.15.5
+          imagePullPolicy: IfNotPresent
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop: ["ALL"]
+          args:
+            - --http-address=0.0.0.0:4180
+            - --provider=github
+            # TODO: replace with the GitHub organization allowed to sign in.
+            - --github-org=your-github-org
+            - --email-domain=*
+            # Reverse-proxy target: the gateway backend Service.
+            - --upstream=http://dsh-gateway:8080
+            # Public callback (TLS terminates at the Gateway listener).
+            # TODO: replace with the actual public FQDN.
+            - --redirect-url=https://dsh-demo.example.com/oauth2/callback
+            - --cookie-secure=true
+            - --cookie-name=_oauth2_proxy
+            # Also expose X-Auth-Request-User/Email/Groups upstream.
+            - --set-xauthrequest
+            # Single provider: skip the provider-selection page.
+            - --skip-provider-button
+          env:
+            - name: OAUTH2_PROXY_CLIENT_ID
+              valueFrom:
+                secretKeyRef:
+                  name: oauth2-proxy
+                  key: client-id
+            - name: OAUTH2_PROXY_CLIENT_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: oauth2-proxy
+                  key: client-secret
+            - name: OAUTH2_PROXY_COOKIE_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: oauth2-proxy
+                  key: cookie-secret
+          ports:
+            - name: http
+              containerPort: 4180
+          livenessProbe:
+            httpGet:
+              path: /ping
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 10
+            timeoutSeconds: 1
+            failureThreshold: 3
+          readinessProbe:
+            httpGet:
+              path: /ready
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 10
+            timeoutSeconds: 5
+            failureThreshold: 3
+          resources:
+            requests:
+              cpu: 10m
+              memory: 32Mi
+            limits:
+              cpu: 200m
+              memory: 128Mi
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: oauth2-proxy
+  namespace: dsh-demo
+  labels:
+    app: oauth2-proxy
+    app.kubernetes.io/part-of: dsh-demo
+spec:
+  selector:
+    app: oauth2-proxy
+  ports:
+    - name: http
+      port: 4180
+      targetPort: http

examples/dsh-agents-as-a-service/manifests/exposure/gateway-api-sso/73-oauth2-proxy-secret.yaml.example

@@ -0,0 +1,39 @@
+# EXAMPLE ONLY — do not apply as-is.
+#
+# oauth2-proxy reads its GitHub OAuth credentials and cookie-signing secret from
+# this Secret. Populate real values and apply:
+#
+#   kubectl -n dsh-demo create secret generic oauth2-proxy \
+#     --from-literal=client-id='<GitHub OAuth App client ID>' \
+#     --from-literal=client-secret='<GitHub OAuth App client secret>' \
+#     --from-literal=cookie-secret="$(python3 -c 'import secrets; print(secrets.token_urlsafe(32))')"
+#
+# The cookie secret must decode (base64) to exactly 16, 24, or 32 bytes.
+# oauth2-proxy base64-decodes it, so it must be URL-safe, unpadded base64.
+# Generate it with either of:
+#
+#   python3 -c 'import secrets; print(secrets.token_urlsafe(32))'
+#   openssl rand -base64 32 | tr -- '+/' '-_' | tr -d '='
+#
+# Do NOT use plain `openssl rand -base64 32`: that yields 44 characters of
+# standard base64 (with "=" and possibly "+"/"/"), which oauth2-proxy cannot
+# decode and therefore treats as 44 raw bytes, failing with "cookie_secret must
+# be 16, 24, or 32 bytes ... but is 44 bytes".
+#
+# GitHub OAuth App (https://github.com/settings/developers):
+#   Homepage URL            https://dsh-demo.example.com
+#   Authorization callback  https://dsh-demo.example.com/oauth2/callback
+#   (replace dsh-demo.example.com with the actual public FQDN)
+#
+# NOTE: pass the base64 value as-is via --from-literal (kubectl stores the
+# literal; it does not base64-encode it a second time).
+apiVersion: v1
+kind: Secret
+metadata:
+  name: oauth2-proxy
+  namespace: dsh-demo
+type: Opaque
+stringData:
+  client-id: "<github-oauth-app-client-id>"
+  client-secret: "<github-oauth-app-client-secret>"
+  cookie-secret: "<urlsafe-unpadded-base64-of-32-random-bytes>"

examples/dsh-agents-as-a-service/manifests/exposure/gateway-api-sso/74-tls-secret.yaml.example

@@ -0,0 +1,17 @@
+# EXAMPLE ONLY — do not apply as-is.
+#
+# Copy to tls-secret.yaml and populate with real base64-encoded PEM material,
+# then apply. The secret must live in the dsh-demo namespace and be named
+# "dsh-demo-tls" (referenced by 70-gateway.yaml).
+#
+#   kubectl -n dsh-demo create secret tls dsh-demo-tls \
+#     --cert=tls.crt --key=tls.key --dry-run=client -o yaml > tls-secret.yaml
+apiVersion: v1
+kind: Secret
+metadata:
+  name: dsh-demo-tls
+  namespace: dsh-demo
+type: kubernetes.io/tls
+data:
+  tls.crt: <base64-encoded-certificate>
+  tls.key: <base64-encoded-private-key>

examples/dsh-agents-as-a-service/manifests/exposure/gateway-api-sso/75-networkpolicies.yaml

@@ -0,0 +1,120 @@
+# OPTIONAL with the SSO exposure variant: enforce the trust boundary at the
+# network layer.
+#
+# The chain is Traefik (Gateway API) -> oauth2-proxy -> dsh-gateway. These
+# policies make it the ONLY chain:
+#   - the gateway accepts traffic only from oauth2-proxy pods;
+#   - oauth2-proxy accepts traffic only from the Gateway implementation;
+#   - oauth2-proxy egress is limited to DNS, public HTTPS (GitHub) and the
+#     gateway.
+# The gateway's own egress (Kubernetes API, sandbox pods) is intentionally not
+# restricted here: the API-server endpoint is cluster-specific. See
+# ../../../docs/optional-hardening.md for that recipe.
+#
+# This manifest assumes Traefik, matching gatewayClassName: traefik in
+# 70-gateway.yaml. Adjust the app.kubernetes.io/name selector for another
+# implementation. NetworkPolicy enforcement of kubelet probes is CNI-dependent;
+# if the gateway or proxy fails its probes, allow the node CIDR on the probe
+# port or remove the ingress policy.
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: dsh-gateway-ingress
+  namespace: dsh-demo
+spec:
+  podSelector:
+    matchLabels:
+      app: dsh-gateway
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              app: oauth2-proxy
+      ports:
+        - protocol: TCP
+          port: 8080
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: oauth2-proxy-ingress
+  namespace: dsh-demo
+spec:
+  podSelector:
+    matchLabels:
+      app: oauth2-proxy
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - namespaceSelector: {}
+          podSelector:
+            matchLabels:
+              app.kubernetes.io/name: traefik
+      ports:
+        - protocol: TCP
+          port: 4180
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: oauth2-proxy-egress
+  namespace: dsh-demo
+spec:
+  podSelector:
+    matchLabels:
+      app: oauth2-proxy
+  policyTypes:
+    - Egress
+  egress:
+    # Cluster DNS.
+    - to:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: kube-system
+          podSelector:
+            matchLabels:
+              k8s-app: kube-dns
+      ports:
+        - protocol: UDP
+          port: 53
+        - protocol: TCP
+          port: 53
+    # NodeLocal DNSCache.
+    - to:
+        - ipBlock:
+            cidr: 169.254.20.10/32
+      ports:
+        - protocol: UDP
+          port: 53
+        - protocol: TCP
+          port: 53
+    # The gateway backend.
+    - to:
+        - podSelector:
+            matchLabels:
+              app: dsh-gateway
+      ports:
+        - protocol: TCP
+          port: 8080
+    # GitHub OAuth endpoints are public HTTPS. Private ranges and the metadata
+    # server stay blocked.
+    - to:
+        - ipBlock:
+            cidr: 0.0.0.0/0
+            except:
+              - 10.0.0.0/8
+              - 172.16.0.0/12
+              - 192.168.0.0/16
+              - 169.254.0.0/16
+              - 100.64.0.0/10
+        - ipBlock:
+            cidr: "::/0"
+            except:
+              - "fc00::/7"
+              - "fe80::/10"
+      ports:
+        - protocol: TCP
+          port: 443

examples/dsh-agents-as-a-service/manifests/exposure/ingress/60-ingress.yaml

@@ -1,15 +1,21 @@
 # OPTIONAL browser entry point: expose the gateway through Traefik.
 #
-# Requires 50-gateway.yaml (Service dsh-gateway:8080) and a Traefik install
+# This is the "no SSO" exposure variant and is MUTUALLY EXCLUSIVE with
-# with an IngressClass named "traefik" (k3s ships one). Replace the placeholder
+# ../gateway-api-sso/ — apply exactly one of them (see ../README.md).
-# host below with a name that resolves to your ingress address, and either
+#
-# supply a real TLS Secret or delete the `tls:` block for plain HTTP.
+# Requires the base manifests (Service dsh-gateway:8080 from
+# manifests/50-gateway.yaml) and a Traefik install with an IngressClass named
+# "traefik" (k3s ships one). Replace the placeholder host below with a name
+# that resolves to your ingress address, and either supply a real TLS Secret or
+# delete the `tls:` block for plain HTTP.
 #
 # Two things must match this host:
-#   1. SandboxTemplate (10-sandboxtemplate.yaml): set DSH_TRUSTED_HOSTS to
+#   1. SandboxTemplate (manifests/10-sandboxtemplate.yaml): set
-#      this host so DSH accepts the forwarded Host/Origin on /api.
+#      DSH_TRUSTED_HOSTS to this host so DSH accepts the forwarded Host/Origin
-#   2. Gateway Deployment (50-gateway.yaml): set COOKIE_SECURE to "true"
+#      on /api.
-#      once this Ingress serves HTTPS, so the session cookie is Secure.
+#   2. Gateway Deployment (manifests/50-gateway.yaml): set COOKIE_SECURE to
+#      "true" once this Ingress serves HTTPS, so the session cookie is Secure.
+#      The base manifest sets "false" for the plain-HTTP port-forward demo.
 #
 # WebSocket support is REQUIRED: the browser talks to /u/<user>/... and DSH
 # uses WebSockets for live session traffic. Traefik upgrades WS/SSE
@@ -17,6 +23,10 @@
 # middlewares (e.g. compress, buffering) to this router — they break streaming
 # and upgrades. `path: /` Prefix covers the landing page and every per-user
 # proxy path, so no per-sandbox Ingress is needed.
+#
+# 61-networkpolicy.yaml is part of this variant: it restricts the gateway's
+# ingress to Traefik pods. Adjust its selector if your ingress controller uses
+# a different label or hostNetwork.
 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:

examples/dsh-agents-as-a-service/manifests/exposure/ingress/61-networkpolicy.yaml

@@ -0,0 +1,31 @@
+# OPTIONAL with the Ingress exposure variant: restrict the gateway's ingress
+# to the ingress controller.
+#
+# This manifest assumes Traefik, matching this variant's
+# `ingressClassName: traefik`. Traefik's Helm chart labels its pods
+# app.kubernetes.io/name=traefik; adjust the selector for another controller or
+# for a hostNetwork install (where the source is the node IP, not a pod IP).
+#
+# NetworkPolicy enforcement of kubelet probe traffic is CNI-dependent. If the
+# gateway starts failing its /healthz probes, allow the node CIDR on port 8080
+# or remove this policy. See ../../../docs/optional-hardening.md.
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: dsh-gateway-ingress
+  namespace: dsh-demo
+spec:
+  podSelector:
+    matchLabels:
+      app: dsh-gateway
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - namespaceSelector: {}
+          podSelector:
+            matchLabels:
+              app.kubernetes.io/name: traefik
+      ports:
+        - protocol: TCP
+          port: 8080

examples/dsh-agents-as-a-service/manifests/optional/README.md

@@ -0,0 +1,37 @@
+# Optional manifests
+
+Opt-in manifests that are **not** part of the top-level walkthrough.
+`kubectl apply -f manifests/` is non-recursive, so it does not apply this
+directory; apply a subdirectory explicitly.
+
+## network-policy/
+
+A Kubernetes `NetworkPolicy` for the DSH sandboxes:
+
+- ingress only from the gateway pods on TCP `3080` (HTTP + WebSocket);
+- egress only to DNS and public HTTPS (provider APIs, package mirrors,
+  git-over-HTTPS).
+
+Apply and delete it explicitly:
+
+```bash
+kubectl apply -f manifests/optional/network-policy/
+kubectl delete -f manifests/optional/network-policy/
+```
+
+It requires a CNI that enforces `NetworkPolicy`. The selector uses the
+agent-sandbox controller's pod tracking label, so the policy applies to
+existing warm-pool and claimed sandboxes without recreation.
+
+## gVisor, nodeSelector and provider keys
+
+These are configured in the main manifests or with an extra Secret:
+
+- **gVisor:** uncomment `runtimeClassName: gvisor` in the SandboxTemplate and
+  the Deployments before applying, or patch an existing install.
+- **nodeSelector:** uncomment the field and replace the placeholder node label.
+- **Provider keys:** create the optional `dsh-provider-keys-extra` Secret; the
+  base `dsh-provider-keys` Secret remains the one required key.
+
+Full prerequisites, exact commands, verification and caveats:
+[optional hardening](../../docs/optional-hardening.md).

examples/dsh-agents-as-a-service/manifests/optional/network-policy/10-sandbox-networkpolicy.yaml

@@ -0,0 +1,80 @@
+# OPTIONAL, opt-in tenant network policy for the DSH sandboxes.
+#
+# It is NOT part of the top-level walkthrough. Apply and delete it explicitly:
+#   kubectl apply  -f manifests/optional/network-policy/
+#   kubectl delete -f manifests/optional/network-policy/
+#
+# The selector uses the agent-sandbox controller's pod tracking label, which is
+# present on every Sandbox pod (including warm-pool spares), so the policy
+# applies to existing sandboxes without recreating them. The SandboxTemplate
+# stays networkPolicyManagement: Unmanaged. Do not also switch it to Managed
+# unless you migrate these rules into spec.networkPolicy; NetworkPolicies are
+# additive and the two configurations would be confusing.
+#
+# Requires a CNI that enforces NetworkPolicy. See docs/optional-hardening.md
+# for the connectivity matrix, DNS variants, kubelet-probe caveat and rollback.
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: dsh-sandbox
+  namespace: dsh-demo
+spec:
+  podSelector:
+    matchExpressions:
+      - key: agents.x-k8s.io/sandbox-name-hash
+        operator: Exists
+  policyTypes:
+    - Ingress
+    - Egress
+  ingress:
+    # The gateway is the only intended client of a sandbox (HTTP + WebSocket).
+    - from:
+        - podSelector:
+            matchLabels:
+              app: dsh-gateway
+      ports:
+        - protocol: TCP
+          port: 3080
+  egress:
+    # Cluster DNS. CoreDNS/kube-dns pods carry k8s-app=kube-dns.
+    - to:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: kube-system
+          podSelector:
+            matchLabels:
+              k8s-app: kube-dns
+      ports:
+        - protocol: UDP
+          port: 53
+        - protocol: TCP
+          port: 53
+    # NodeLocal DNSCache, for clusters that do not send DNS to the kube-dns
+    # Service. 169.254.20.10 is its standard link-local address.
+    - to:
+        - ipBlock:
+            cidr: 169.254.20.10/32
+      ports:
+        - protocol: UDP
+          port: 53
+        - protocol: TCP
+          port: 53
+    # Public HTTPS only: provider APIs, package mirrors, git-over-HTTPS.
+    # Private ranges, CGNAT and the metadata server stay blocked.
+    - to:
+        - ipBlock:
+            cidr: 0.0.0.0/0
+            except:
+              - 10.0.0.0/8
+              - 172.16.0.0/12
+              - 192.168.0.0/16
+              - 169.254.0.0/16
+              - 100.64.0.0/10
+        - ipBlock:
+            cidr: "::/0"
+            except:
+              - "fc00::/7"
+              - "fe80::/10"
+      ports:
+        - protocol: TCP
+          port: 443

examples/dsh-agents-as-a-service/scripts/e2e-kind.sh

@@ -1,13 +1,37 @@
 #!/usr/bin/env bash
-# Smoke test for the dsh-agents-as-a-service example: runs the full README
+# End-to-end smoke test for the dsh-agents-as-a-service example: runs the
-# walkthrough non-interactively against the current kubectl context.
+# README walkthrough non-interactively against the current kubectl context.
-# Expects agent-sandbox (with extensions) already installed.
+#
+# Prerequisites:
+#   - A kind cluster whose name matches the current kubectl context, or set
+#     KIND_CLUSTER=<name>.
+#   - agent-sandbox with extensions installed (API v1beta1). The release
+#     manifest is pinned by AGENT_SANDBOX_VERSION in versions.env:
+#       . ../../../versions.env
+#       kubectl apply -f https://github.com/kubernetes-sigs/agent-sandbox/releases/download/${AGENT_SANDBOX_VERSION}/sandbox-with-extensions.yaml
+#   - docker, to build the gateway image (skipped with SKIP_GATEWAY=1).
+#
+# Environment:
+#   SKIP_GATEWAY=1   run only the resource-layer checks (no gateway build/load,
+#                    no signup/proxy/WebSocket/idle/wake checks)
+#   KIND_CLUSTER     kind cluster name for "kind load docker-image"
+#                    (default: derived from the current kubectl context)
+#   GW_LOCAL_IMAGE   local gateway image tag
+#                    (default: dsh-aaas-gateway:e2e)
+#
+# The gateway is built from the working tree (gateway/) and loaded into kind,
+# so this tests the example as checked out, not the published image.
+#
+# The script is destructive only inside the dsh-demo namespace: it creates the
+# namespace (and a throwaway provider key) and DELETES it on exit via the
+# cleanup trap.
 #
 # NOTE: the only local port bound is the gateway port-forward on 18080.
 # The DSH Web container port (3080) is in-cluster only and is never bound
 # on the local host.
 set -euo pipefail
-cd "$(dirname "$0")"
+# Example root: paths below are manifests/... and gateway/... from here.
+cd "$(dirname "$0")/.."
 
 NS=dsh-demo
 pass() { echo "PASS: $1"; }
@@ -20,12 +44,14 @@ cleanup() {
 trap cleanup EXIT
 
 echo "=== 1. install prereqs (throwaway key) + template + warm pool"
-kubectl apply -f 00-prereqs.yaml
+kubectl apply -f manifests/00-prereqs.yaml
 # The provider key is never committed; generate a throwaway value.
 kubectl -n "$NS" delete secret dsh-provider-keys --ignore-not-found >/dev/null
 kubectl -n "$NS" create secret generic dsh-provider-keys \
   --from-literal=DEEPSEEK_API_KEY="sk-test-$(openssl rand -hex 16)"
-kubectl apply -f 10-sandboxtemplate.yaml -f 20-sandboxwarmpool.yaml
+# dsh-provider-keys-extra is intentionally absent: the template's optional
+# envFrom reference must not block the warm pool.
+kubectl apply -f manifests/10-sandboxtemplate.yaml -f manifests/20-sandboxwarmpool.yaml
 for _ in $(seq 1 120); do
   READY=$(kubectl -n "$NS" get sandboxes -l agents.x-k8s.io/warm-pool-sandbox \
     -o jsonpath='{range .items[*]}{.status.conditions[?(@.type=="Ready")].status}{"\n"}{end}' | grep -c True || true)
@@ -37,7 +63,7 @@ pass "warm pool: 2 spares Ready"
 
 echo "=== 2. signup via claim (warm adoption)"
 T0=$(date +%s)
-kubectl apply -f 30-claim-alice.yaml
+kubectl apply -f manifests/30-claim-alice.yaml
 kubectl -n "$NS" wait sandboxclaim dsh-alice --for=condition=Ready --timeout=60s
 ELAPSED=$(( $(date +%s) - T0 ))
 SB=$(kubectl -n "$NS" get sandboxclaim dsh-alice -o jsonpath='{.status.sandbox.name}')
@@ -65,7 +91,7 @@ MARKER=$(kubectl -n "$NS" exec "$POD" -- cat /home/node/.dsh/marker.txt)
 pass "resumed: state survived on the reattached PVC"
 
 echo "=== 6. injection policy rejects env-carrying claims"
-kubectl apply -f 40-claim-rejected.yaml
+kubectl apply -f manifests/40-claim-rejected.yaml
 # Wait for the POSITIVE rejection signal, not merely "not bound yet".
 REASON=""
 for _ in $(seq 1 12); do
@@ -78,19 +104,25 @@ done
   || fail "claim was not rejected (Ready reason='$REASON')"
 BOUND=$(kubectl -n "$NS" get sandboxclaim dsh-mallory -o jsonpath='{.status.sandbox.name}' 2>/dev/null || true)
 [ -z "$BOUND" ] || fail "env-carrying claim unexpectedly bound sandbox '$BOUND'"
-kubectl delete -f 40-claim-rejected.yaml >/dev/null
+kubectl delete -f manifests/40-claim-rejected.yaml >/dev/null
 pass "claim rejected with EnvVarsInjectionRejected and never bound"
 
 echo "=== 7. gateway: browser signup, proxy, idle-suspend, wake-on-connect"
 if command -v docker >/dev/null && command -v kind >/dev/null; then
   KIND_CLUSTER="${KIND_CLUSTER:-$(kubectl config current-context | sed 's/^kind-//')}"
-  # Tag exactly what 50-gateway.yaml references so the smoke test exercises
+  GW_LOCAL_IMAGE="${GW_LOCAL_IMAGE:-dsh-aaas-gateway:e2e}"
-  # the shipped manifest unchanged (imagePullPolicy: IfNotPresent uses the
+  # Test the working tree, not the published image: build the gateway from
-  # image loaded into kind).
+  # gateway/, load it into kind, then point the Deployment at that tag. The
-  GW_IMAGE=ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:gateway
+  # shipped manifest pins the release image; imagePullPolicy: IfNotPresent
-  docker build -q -t "$GW_IMAGE" gateway/ >/dev/null
+  # makes the node use the loaded one.
-  kind load docker-image "$GW_IMAGE" --name "$KIND_CLUSTER" >/dev/null
+  docker build -q -t "$GW_LOCAL_IMAGE" gateway/ >/dev/null
-  kubectl apply -f 50-gateway.yaml
+  kind load docker-image "$GW_LOCAL_IMAGE" --name "$KIND_CLUSTER" >/dev/null
+  kubectl apply -f manifests/50-gateway.yaml
+  kubectl -n "$NS" set image deploy/dsh-gateway gateway="$GW_LOCAL_IMAGE"
+  # Override the demo timeouts from manifests/50-gateway.yaml (360/240) with the
+  # gateway's working-tree defaults, so idle-suspend and wake-on-connect are
+  # exercised in seconds instead of minutes.
+  kubectl -n "$NS" set env deploy/dsh-gateway IDLE_TIMEOUT=60 WAKE_TIMEOUT=120
   kubectl -n "$NS" rollout status deploy/dsh-gateway --timeout=120s
   # Local port-forward uses 18080 (NOT 3080, which stays in-cluster).
   kubectl -n "$NS" port-forward svc/dsh-gateway 18080:8080 >/dev/null 2>&1 &

examples/minimal-single-tenant/README.md

@@ -0,0 +1,152 @@
+# Minimal single-tenant DSH Web
+
+The smallest Kubernetes deployment of DeepSeek Harness (DSH) Web: one
+`SandboxTemplate`, a one-replica warm pool and one claim. It is the "just one
+DSH Web instance" quickstart.
+
+For the full platform — warm pool sizing, per-user claims, a browser-facing
+gateway with cookie sessions, idle-suspend and wake-on-connect — see
+[`examples/dsh-agents-as-a-service/`](../dsh-agents-as-a-service/README.md).
+This example deliberately has no gateway: you reach DSH through a
+`kubectl port-forward` and its launch-token URL.
+
+## Prerequisites
+
+- A Kubernetes cluster with a default StorageClass (kind and GKE both work).
+- The agent-sandbox controller with extensions (API `v1beta1`) installed.
+  The version is pinned as `AGENT_SANDBOX_VERSION` in
+  [`versions.env`](../../versions.env):
+
+  ```bash
+  # from the repository root:
+  . versions.env
+  kubectl apply -f "https://github.com/kubernetes-sigs/agent-sandbox/releases/download/${AGENT_SANDBOX_VERSION}/sandbox-with-extensions.yaml"
+  kubectl -n agent-sandbox-system rollout status deployment --timeout=180s
+  ```
+
+- A DeepSeek API key for real model calls. The pod starts without one; only
+  model requests fail. Optionally create `dsh-provider-keys-extra` for
+  OpenRouter, Gemini, NVIDIA or other provider keys (the template references it
+  with `optional: true`).
+
+## Quickstart
+
+Run these from this example's directory (`examples/minimal-single-tenant/`).
+
+```bash
+# 1. Namespace + shared provider keys. They are injected into the sandbox via
+#    envFrom and are never committed.
+kubectl create namespace dsh-demo
+kubectl -n dsh-demo create secret generic dsh-provider-keys \
+  --from-literal=DEEPSEEK_API_KEY="sk-..."
+
+# Optional: extra providers, injected through a second Secret. Create it before
+# the warm pool so the pods are stamped with the keys.
+kubectl -n dsh-demo create secret generic dsh-provider-keys-extra \
+  --from-literal=OPENROUTER_API_KEY="sk-or-..." \
+  --from-literal=GEMINI_API_KEY="..." \
+  --from-literal=NVIDIA_API_KEY="nvapi-..."
+
+# 2. The template itself (image pinned in the manifest).
+kubectl apply -f manifests/sandbox-template.yaml
+
+# 3. A template only describes pods; a warm pool turns it into running
+#    Sandboxes and a claim adopts one. One replica is enough here.
+kubectl apply -f - <<'EOF'
+apiVersion: extensions.agents.x-k8s.io/v1beta1
+kind: SandboxWarmPool
+metadata:
+  name: dsh-pool
+  namespace: dsh-demo
+spec:
+  replicas: 1
+  sandboxTemplateRef:
+    name: dsh-web-template
+---
+apiVersion: extensions.agents.x-k8s.io/v1beta1
+kind: SandboxClaim
+metadata:
+  name: dsh
+  namespace: dsh-demo
+spec:
+  warmPoolRef:
+    name: dsh-pool
+EOF
+
+kubectl -n dsh-demo wait sandboxclaim/dsh --for=condition=Ready --timeout=180s
+```
+
+## Talk to the instance
+
+DSH gates `/` behind a launch token it prints only in its startup logs. Open
+the printed URL once; DSH then sets its own auth cookie and the UI loads
+normally.
+
+```bash
+SB=$(kubectl -n dsh-demo get sandboxclaim dsh -o jsonpath='{.status.sandbox.name}')
+kubectl -n dsh-demo logs "$SB" | grep -m1 '?token='
+# dsh web: http://<pod-ip>:3080/?token=...
+
+kubectl -n dsh-demo port-forward "pod/$SB" 18081:3080
+# open http://localhost:18081/?token=... from the log line
+```
+
+> **Port note:** DSH Web listens on `3080` in-cluster. If `3080` is already in
+> use on your workstation, forward to another local port (here `18081`), never
+> `3080`. `localhost` is always in DSH's trusted-host list, so the forwarded
+> request is accepted.
+>
+> **gVisor caveat:** if you uncomment `runtimeClassName: gvisor` in the
+> template, `kubectl port-forward` no longer works. Use the multi-tenant gateway
+> example or a reachable Service instead; see
+> [optional hardening](../dsh-agents-as-a-service/docs/optional-hardening.md).
+
+## Network policy and optional hardening
+
+The template omits `networkPolicyManagement`, so the agent-sandbox controller
+uses its Managed secure default: ingress only from the sandbox-router, public
+egress, and no internal cluster DNS. `kubectl port-forward` is local to the pod
+and still works (except under gVisor).
+
+gVisor, an optional `nodeSelector`, extra provider keys and a stricter sandbox
+NetworkPolicy are documented in
+[optional hardening](../dsh-agents-as-a-service/docs/optional-hardening.md).
+
+## Probes and trusted hosts
+
+Two settings in `manifests/sandbox-template.yaml` are easy to get wrong:
+
+- **Probe path.** `/` returns `401` without the launch-token cookie, so a probe
+  there crash-loops the pod. The template probes `/favicon.svg` (served
+  unauthenticated) and gates liveness/readiness behind a `startupProbe`, which
+  gives a cold start (plugin activation, or the first resume) up to 120s before
+  a restart.
+- **Host allow-list.** DSH rejects unknown `Host` headers. `localhost` and
+  `127.0.0.1` are always trusted; if you later front the sandbox with an
+  Ingress or proxy, set `DSH_TRUSTED_HOSTS` to that public host (comma or space
+  separated). The full example explains both exposure variants in
+  [`manifests/exposure/README.md`](../dsh-agents-as-a-service/manifests/exposure/README.md).
+
+The template also sets `fsGroupChangePolicy: OnRootMismatch`. DSH's
+credentials plugin requires `.credentials.yaml` to be `0600`, while the
+kubelet's default fsGroup policy rewrites it to `0660` on every pod start —
+without this policy a recreated or resumed sandbox crash-loops. The rationale
+is spelled out in
+[`10-sandboxtemplate.yaml`](../dsh-agents-as-a-service/manifests/10-sandboxtemplate.yaml).
+
+## Suspend, resume and clean up
+
+```bash
+# Suspend: the pod is deleted, the PVC (state) and Service are kept.
+kubectl -n dsh-demo patch sandbox "$SB" --type merge -p '{"spec":{"operatingMode":"Suspended"}}'
+
+# Resume: a new pod reattaches the same PVC; conversations survive.
+kubectl -n dsh-demo patch sandbox "$SB" --type merge -p '{"spec":{"operatingMode":"Running"}}'
+kubectl -n dsh-demo wait sandbox "$SB" --for=condition=Ready --timeout=180s
+
+# Delete everything this quickstart created.
+kubectl -n dsh-demo delete sandboxclaim dsh
+kubectl delete namespace dsh-demo
+```
+
+Deleting the claim cascades to the sandbox and its PVC.

examples/minimal-single-tenant/manifests/sandbox-template.yaml

@@ -4,11 +4,15 @@
 # multi-tenant platform (warm pool, per-user claims, gateway, idle-suspend),
 # see examples/dsh-agents-as-a-service/.
 #
-# Prerequisites (create these first, or apply 00-prereqs.yaml from the
+# Claims reference this template directly (spec.sandboxTemplateRef): there is
-# examples directory):
+# no warm pool and no per-user platform here. See the README for the full
+# quickstart; in short the prerequisites are:
 #   - Namespace dsh-demo.
 #   - Secret dsh-provider-keys in dsh-demo with key DEEPSEEK_API_KEY
 #     (injected via envFrom; the pod starts without it, only model calls fail).
+#   - Optional: Secret dsh-provider-keys-extra with additional provider keys
+#     (OPENROUTER_API_KEY, GEMINI_API_KEY, NVIDIA_API_KEY, ...). It is
+#     referenced with `optional: true`, so it may be absent.
 # The agent-sandbox controller (v1.0.7, API v1beta1) must be installed.
 apiVersion: extensions.agents.x-k8s.io/v1beta1
 kind: SandboxTemplate
@@ -17,8 +21,22 @@ metadata:
   namespace: dsh-demo
 spec:
   service: true # headless Service per Sandbox -> stable DNS (status.serviceFQDN)
+  # networkPolicyManagement is omitted, so the controller uses its Managed
+  # secure default (ingress only from the sandbox-router, public egress). This
+  # quickstart reaches the sandbox through `kubectl port-forward`, which is
+  # local to the pod. The multi-tenant example documents opt-in policies in
+  # examples/dsh-agents-as-a-service/docs/optional-hardening.md.
   podTemplate:
     spec:
+      # OPTIONAL: run under gVisor. gVisor breaks `kubectl port-forward`, so
+      # this quickstart's only access path will not work; use the multi-tenant
+      # gateway example or a Service/NodePort instead.
+      # runtimeClassName: gvisor
+      #
+      # OPTIONAL: pin to a dedicated node pool. Replace the placeholder with a
+      # node label; add a matching toleration if the pool is tainted.
+      # nodeSelector:
+      #   dsh.example.com/node-pool: dsh
       securityContext:
         runAsNonRoot: true
         runAsUser: 1000 # Matches the UID of the 'node' user
@@ -26,16 +44,15 @@ spec:
         fsGroup: 1000
         # DSH's credentials plugin refuses to start when .credentials.yaml has
         # any group/other permission bit (it creates the file 0600). The
-        # default kubelet fsGroup policy ("Always") recursively ORs 0660 into
+        # default kubelet fsGroup policy ("Always") rewrites it to 0660 on every
-        # every file each time the pod starts, so a recreated/resumed sandbox
+        # pod start, so a recreated or resumed sandbox crash-loops; OnRootMismatch
-        # comes back with 0660 and crash-loops. OnRootMismatch skips that walk
+        # avoids that walk once the volume root already carries the ownership.
-        # once the volume root already has the fsGroup ownership/mode from the
+        # Rationale in full at
-        # first mount. Keep in sync with
+        # examples/dsh-agents-as-a-service/manifests/10-sandboxtemplate.yaml.
-        # examples/dsh-agents-as-a-service/10-sandboxtemplate.yaml.
         fsGroupChangePolicy: OnRootMismatch
       containers:
         - name: dsh-web
-          image: ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.2
+          image: ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox:dsh-v0.2.1-rc.3-r4
           imagePullPolicy: IfNotPresent
           ports:
             - name: web
@@ -43,6 +60,10 @@ spec:
           envFrom:
             - secretRef:
                 name: dsh-provider-keys # Secret with key DEEPSEEK_API_KEY
+            # Optional extra provider keys; an absent Secret is safe.
+            - secretRef:
+                name: dsh-provider-keys-extra
+                optional: true
           env:
             # Empty => DSH derives links from the request Host. Keep it empty
             # when fronting the sandbox with a proxy/gateway.
@@ -50,8 +71,10 @@ spec:
               value: ""
             # DSH Host/Origin-fences /api. Empty trusts only localhost, which
             # is right for `kubectl port-forward`. Set this to the public host
-            # (e.g. dsh.example.com) if you expose DSH behind an Ingress, so
+            # (e.g. dsh.example.com) if you front DSH with a proxy or Ingress,
-            # requests forwarded with the browser's Host are accepted.
+            # so requests forwarded with the browser's Host are accepted. The
+            # full example documents both exposure variants in
+            # examples/dsh-agents-as-a-service/manifests/exposure/README.md.
             - name: DSH_TRUSTED_HOSTS
               value: ""
           volumeMounts:

scripts/check-examples.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+# Enforce the example contract documented in docs/examples.md.
+# Run by "make check" locally and by the CI lint job.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+index=examples/README.md
+fail=0
+err() { echo "check-examples: $*" >&2; fail=1; }
+
+[ -f "$index" ] || err "missing $index"
+
+for dir in examples/*/; do
+  name="$(basename "$dir")"
+  [ "$name" = "_template" ] && continue
+
+  [ -f "${dir}README.md" ] || err "$name: missing README.md"
+  [ -d "${dir}manifests" ] || err "$name: missing manifests/"
+
+  if [ -d "${dir}manifests" ]; then
+    count=$(find "${dir}manifests" -maxdepth 1 -type f -name '*.yaml' | wc -l | tr -d ' ')
+    [ "$count" -gt 0 ] || err "$name: manifests/ has no top-level *.yaml files"
+  fi
+
+  stray=$(find "$dir" -maxdepth 1 -type f -name '*.yaml' | wc -l | tr -d ' ')
+  [ "$stray" -eq 0 ] || err "$name: manifests belong under manifests/, not at the example root"
+
+  if [ -d "${dir}manifests/exposure" ] && [ ! -f "${dir}manifests/exposure/README.md" ]; then
+    err "$name: manifests/exposure/ requires a README.md describing the variants"
+  fi
+
+  if [ -d "${dir}manifests/optional" ] && [ ! -f "${dir}manifests/optional/README.md" ]; then
+    err "$name: manifests/optional/ requires a README.md describing the opt-in manifests"
+  fi
+
+  for component in "$dir"*/; do
+    [ -d "$component" ] || continue
+    case "$(basename "$component")" in
+      manifests|scripts|docs) continue ;;
+    esac
+    if [ -f "${component}Dockerfile" ] && [ ! -f "${component}README.md" ]; then
+      err "$name/$(basename "$component"): component with a Dockerfile needs a README.md"
+    fi
+  done
+
+  if ! grep -Fq "examples/$name/" "$index"; then
+    err "$name: not listed in examples/README.md"
+  fi
+
+  for script in "$dir"scripts/*.sh; do
+    [ -e "$script" ] || continue
+    [ -x "$script" ] || err "$script: must be executable"
+  done
+done
+
+if [ "$fail" -ne 0 ]; then
+  echo "check-examples: FAILED" >&2
+  exit 1
+fi
+echo "check-examples: ok"

scripts/check-manifests.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+"""Parse every example manifest and assert the minimal Kubernetes shape."""
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+try:
+    import yaml
+except ModuleNotFoundError:  # pragma: no cover - environment guard
+    sys.exit("check-manifests: PyYAML is required (python -m pip install pyyaml)")
+
+ROOT = Path(__file__).resolve().parent.parent
+FILES = sorted(ROOT.glob("examples/*/manifests/**/*.yaml"))
+
+if not FILES:
+    sys.exit("check-manifests: no manifests found under examples/*/manifests/")
+
+errors: list[str] = []
+documents = 0
+for path in FILES:
+    relative = path.relative_to(ROOT)
+    try:
+        loaded = list(yaml.safe_load_all(path.read_text(encoding="utf-8")))
+    except yaml.YAMLError as exc:
+        errors.append(f"{relative}: invalid YAML: {exc}")
+        continue
+    for position, document in enumerate(loaded, start=1):
+        if document is None:
+            continue
+        documents += 1
+        if not isinstance(document, dict):
+            errors.append(f"{relative} document {position}: not a mapping")
+            continue
+        missing = [key for key in ("apiVersion", "kind", "metadata") if key not in document]
+        if missing:
+            errors.append(f"{relative} document {position}: missing {', '.join(missing)}")
+            continue
+        metadata = document["metadata"]
+        if not isinstance(metadata, dict) or not metadata.get("name"):
+            errors.append(f"{relative} document {position}: metadata.name is required")
+
+if errors:
+    print("\n".join(errors), file=sys.stderr)
+    sys.exit(1)
+
+print(f"check-manifests: ok ({len(FILES)} files, {documents} documents)")

scripts/check-versions.sh

@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+# Verify that every version pin in the repository agrees with versions.env.
+# Run by "make check" locally and by the CI lint job.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+# shellcheck source=/dev/null
+. ./versions.env
+
+IDENTITY="$DSH_VERSION"
+if [ -n "${RELEASE_REVISION:-}" ]; then
+  IDENTITY="$DSH_VERSION-$RELEASE_REVISION"
+fi
+
+fail=0
+err() { echo "check-versions: $*" >&2; fail=1; }
+expect() { # <file> <literal>
+  if ! grep -Fq -- "$2" "$1"; then
+    err "$1: expected to contain: $2"
+  fi
+}
+
+# Main Dockerfile build args
+expect Dockerfile "ARG DSH_VERSION=$DSH_VERSION"
+expect Dockerfile "ARG PNPM_VERSION=$PNPM_VERSION"
+expect Dockerfile "ARG RELEASE_REVISION=$RELEASE_REVISION"
+
+# Local configuration mirrored for humans
+expect .env.sample "DSH_VERSION=$DSH_VERSION"
+expect .env.sample "PNPM_VERSION=$PNPM_VERSION"
+expect .env.sample "RELEASE_REVISION=$RELEASE_REVISION"
+
+# Image references in the example manifests
+for f in \
+  examples/dsh-agents-as-a-service/manifests/10-sandboxtemplate.yaml \
+  examples/minimal-single-tenant/manifests/sandbox-template.yaml; do
+  expect "$f" "image: $GHCR_IMAGE:$IDENTITY"
+done
+expect examples/dsh-agents-as-a-service/manifests/50-gateway.yaml "image: $GATEWAY_IMAGE:$IDENTITY"
+
+# The gateway image must live below the repository image (one package per
+# example component, no unrelated top-level packages).
+case "$GATEWAY_IMAGE" in
+  "$GHCR_IMAGE"/*) ;;
+  *) err "GATEWAY_IMAGE ($GATEWAY_IMAGE) must be nested below GHCR_IMAGE ($GHCR_IMAGE)" ;;
+esac
+
+# Build tooling must read versions.env instead of hard-coding a version.
+# (scripts/ is excluded: set-version.sh documents usage examples in comments.)
+while IFS= read -r hit; do
+  [ -n "$hit" ] || continue
+  err "hard-coded version outside versions.env: $hit"
+done < <(grep -rnE 'dsh-v[0-9]' .github/workflows Makefile 2>/dev/null || true)
+
+# Prose may mention versions, but only the current identity or its base tag.
+while IFS= read -r token; do
+  [ -n "$token" ] || continue
+  case "$token" in
+    "$IDENTITY"|"$DSH_VERSION") ;;
+    *) err "stale version reference in docs: $token" ;;
+  esac
+done < <(grep -rhoE 'dsh-v[0-9][A-Za-z0-9._-]*' \
+  --include='*.md' --exclude-dir=.git --exclude-dir=.venv --exclude-dir=.uvcache \
+  --exclude=CHANGELOG.md . | sort -u)
+
+if [ "$fail" -ne 0 ]; then
+  echo "check-versions: FAILED" >&2
+  exit 1
+fi
+echo "check-versions: ok ($IDENTITY)"

scripts/set-version.sh

@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+# Rewrite every version pin in one pass, then leave the tree ready for
+# "make check".
+#
+#   ./scripts/set-version.sh dsh-v0.2.2-rc.1        # new DSH ref, no revision
+#   ./scripts/set-version.sh dsh-v0.2.1-rc.3 r3    # same ref, new repo revision
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+new_version="${1:-}"
+new_revision="${2:-}"
+
+case "$new_version" in
+  dsh-v[0-9]*) ;;
+  *) echo "usage: $0 <dsh-vX.Y.Z> [rN]" >&2; exit 2 ;;
+esac
+
+if [ -n "$new_revision" ]; then
+  case "$new_revision" in
+    r[2-9]|r[1-9][0-9]*) ;;
+    *) echo "revision must look like r2, r3, ..." >&2; exit 2 ;;
+  esac
+fi
+
+# shellcheck source=/dev/null
+old_version="$(. ./versions.env; printf '%s' "$DSH_VERSION")"
+# shellcheck source=/dev/null
+old_revision="$(. ./versions.env; printf '%s' "${RELEASE_REVISION:-}")"
+
+old_identity="$old_version"
+[ -z "$old_revision" ] || old_identity="$old_version-$old_revision"
+new_identity="$new_version"
+[ -z "$new_revision" ] || new_identity="$new_version-$new_revision"
+
+if [ "$old_identity" = "$new_identity" ]; then
+  echo "set-version: already at $new_identity"
+  exit 0
+fi
+
+# Replace the identity first (it contains the base version), then the base
+# version itself. CHANGELOG.md is generated from tags, so it is left alone.
+while IFS= read -r file; do
+  [ -f "$file" ] || continue
+  case "$file" in
+    .env.sample|Dockerfile|Makefile|*.md|*.yaml|*.yml|*.sh|*.py|*.toml|*.env) ;;
+    *) continue ;;
+  esac
+  sed -i "s/$old_identity/$new_identity/g; s/$old_version/$new_version/g" "$file"
+done < <(git ls-files)
+
+# versions.env is authoritative: write both keys explicitly so an empty
+# revision is stored as an empty value.
+sed -i "s/^DSH_VERSION=.*/DSH_VERSION=$new_version/" versions.env
+sed -i "s/^RELEASE_REVISION=.*/RELEASE_REVISION=$new_revision/" versions.env
+
+# Values stored separately from the full identity: Dockerfile ARG defaults and
+# the human-facing sample cannot be reached by the identity replacement above.
+sed -i "s/^ARG DSH_VERSION=.*/ARG DSH_VERSION=$new_version/" Dockerfile
+sed -i "s/^ARG RELEASE_REVISION=.*/ARG RELEASE_REVISION=$new_revision/" Dockerfile
+sed -i "s/^DSH_VERSION=.*/DSH_VERSION=$new_version/" .env.sample
+sed -i "s/^RELEASE_REVISION=.*/RELEASE_REVISION=$new_revision/" .env.sample
+
+echo "set-version: $old_identity -> $new_identity"
+echo "set-version: run 'make check' and review the diff"

versions.env

@@ -0,0 +1,26 @@
+# Single source of truth for every pinned version and image name in this
+# repository. Consumed by the Makefile, build.sh, scripts/*.sh and the GitHub
+# Actions workflows. Never hard-code these values elsewhere: run "make check"
+# (scripts/check-versions.sh) to verify every pin.
+
+# Upstream DeepSeek Harness source, and the ref this repository packages.
+DSH_REPO=https://github.com/deepseek-ai/deepseek-harness.git
+DSH_VERSION=dsh-v0.2.1-rc.3
+PNPM_VERSION=11.28.5
+
+# Release identity = DSH_VERSION plus an optional repository revision.
+# An empty RELEASE_REVISION is the first release at this DSH ref; rN (N >= 2)
+# marks a repository-only re-release at the same DSH ref. The dsh-v0.2.1-rc.3
+# image tag is already published on GHCR and tags are immutable, so the current
+# scheme started at -r2; the current identity is dsh-v0.2.1-rc.3-r4.
+RELEASE_REVISION=r4
+
+# Control-plane versions used by the examples and their manifests.
+AGENT_SANDBOX_VERSION=v1.0.7
+GATEWAY_API_VERSION=v1.2.1
+OAUTH2_PROXY_IMAGE=quay.io/oauth2-proxy/oauth2-proxy:v7.15.5
+
+# Registry layout: the main image is the repository itself, and every example
+# component is a nested package below it (<registry>/<owner>/<repo>/<example>/<component>).
+GHCR_IMAGE=ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox
+GATEWAY_IMAGE=ghcr.io/sredevopsorg/deepseek-kubernetes-sandbox/dsh-agents-as-a-service/gateway