feat: add service-scoped Compose update and restore (#1648)

* feat: add service-scoped Compose update and restore

Allow updating or rebuilding one declared Compose service on multi-service
stacks without recreating siblings, with recovery snapshots, health-gate
observation, and prune holds for rollback images. Full-stack update paths
and single-service UX stay unchanged.

* fix: sanitize service-scoped update log messages for CodeQL

* fix: address service-scoped update audit findings B-01 through B-07

* fix: complete service-scoped update audit metadata and surfaces

* test: wrap Updates readiness tests for deploy-feedback context

* fix: keep service recovery reachable without Deploy Progress

Make failed service-gate recovery discoverable when Deploy Progress is
disabled or dismissed, suppress stale image-scan notification side
effects, normalize ComposeService line endings, and add focused
regression coverage.

* fix: resurface ContainersHealth density and expand on multi-service stacks

Service grouping hid the summary strip and Compact/Detailed/Expand controls that still applied to multi-container stacks.

frontend/src/components/EditorLayout/hooks/useStackActions.test.ts

@@ -50,6 +50,10 @@ function makeEditorState(over: Partial<EditorState> = {}): EditorState {
     setGitSourcePendingMap: vi.fn(),
     setComposeEtag: vi.fn(),
     setEnvEtag: vi.fn(),
+    effectiveServices: [],
+    setEffectiveServices: vi.fn(),
+    serviceUpdateInProgress: null,
+    setServiceUpdateInProgress: vi.fn(),
   };
   return { ...base, ...over } as unknown as EditorState;
 }