Feat v0.3.7 package audit

- Fix 6 chat-extension manifests: "name" → "title" (was blocking install)
- Add "type": "surface" to hello-dashboard, icd-test-runner, sdk-test-runner
- Add dormant status to packages schema (SQLite + Postgres)
- Installer auto-detects requires: ["chat"] → sets dormant + disabled
- Enable endpoint returns 409 for dormant packages
- Relax dependency check: pending_review libraries allowed
- Admin UI: dormant badge, disabled Enable button, Dormant stat card
- 4 new handler tests (143 total passing)
- Docker audit: all 16 packages install correctly

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/store/package_iface.go

@@ -25,7 +25,7 @@ type PackageStore interface {
 	SetEnabled(ctx context.Context, id string, enabled bool) error
 
 	// SetStatus transitions a package's lifecycle status.
-	// Valid statuses: active, pending_review, suspended.
+	// Valid statuses: active, pending_review, suspended, dormant.
 	SetStatus(ctx context.Context, id string, status string) error
 
 	// Delete removes a non-core package. Core packages cannot be deleted.