fc-ttsreader: bump to v202604241332 (XL sprint — sidebar shell + CHAP + offline ZIP + breaker)

Merges four XL-sprint lanes to TtsReader master:
- FcSidebarLayout swap (MainLayout + NavMenu, deletes 88-line shell CSS)
- ID3 CHAP chapter markers in rendered MP3s (Apple Podcasts chapter list)
- POST /api/v1/projects/{id}/export/zip offline bundle + MCP tool
- Per-engine TtsCircuitBreaker with Kokoro→Piper fallback + /voices
  engine-health panel + GET /api/v1/voices/engines/status

153/153 tests green on Linux dotnet build. Image imported to
rke2-server / rke2-agent1 / rke2-agent2. No app env changes beyond
the image tag.

apps/fc-ttsreader/fc-ttsreader.yaml

@@ -142,7 +142,7 @@ spec:
         fsGroupChangePolicy: OnRootMismatch
       containers:
         - name: web
-          image: localhost/fc-ttsreader-web:v202604240117
+          image: localhost/fc-ttsreader-web:v202604241332
           imagePullPolicy: Never
           ports:
             - containerPort: 5217