fix: keep running containers until stack pull/build succeeds (#1657)

* fix: keep running containers until stack pull/build succeeds

Acquire images before reconcile, capture a recovery generation for
compensation, and only remove classified orphans after handoff.

* fix: address recovery audit blockers for safe stack updates

Retire abandoned and expired recovery artifacts, probe compensated
runtimes before reporting rollback success, preserve local Docker when
deleting a node, validate the exact Compose invocation before capture,
and repair updateStack return-contract fixtures.

* fix: resolve ESLint errors blocking CI on this branch

Unused-import and unused-variable errors left over from the stack
deletion refactor: MeshService in stacks.ts (its opt-out cascade moved
into DeployedStackDeletionService), a redundant pruneVolumes
destructure in deleteDeployedStack (the real one is re-derived from
the same input object inside runDeletionBody), and an unused beforeAll
import in a Docker-integration test stub. Also scopes the webhook
pull-action case body in a block to satisfy no-case-declarations;
purely syntactic, no behavior change.

* fix: harden recovery probe, cleanup retry, and failed-pull Docker test

Reject absent or unhealthy expected replicas before reporting rollback
success, keep cleanup records until artifacts are actually removed, fail
closed when a mesh override cannot be generated, and assert a real
failed pull leaves the original container running.

* fix: verify recovery probe image identity and stack-scoped override paths

Reject recovered runtimes that use the wrong image or leave scale-zero
services running, and confine tombstone override deletion to the intent
stack directory so forged cross-stack paths cannot be swept.

* test: batch notification cap fixtures in a SQLite transaction

Unbatched 1200-row inserts were timing out at the default 30s under
CI load even though the same assertions pass in under 2s when green.

.github/workflows/ci.yml

@@ -49,6 +49,10 @@ jobs:
         working-directory: ./backend
         run: npm test
 
+      - name: Docker integration tests (dedicated Vitest config)
+        working-directory: ./backend
+        run: npm run test:docker-integration
+
       - name: Lint (ESLint)
         working-directory: ./backend
         run: npm run lint