fc-ttsreader: bump to v202604242301readwithtimings

Picks up Lane 1δ + 3β:
- Lane 3β: GET /reader-embed iframe-friendly host route + public-
  read CORS for /api/v1/voices and /_content/.../embed/
- Lane 1δ: GET /api/v1/voices/preview-with-timings — pairs
  synthesized audio with per-word alignment timings (faster-
  whisper or estimated fallback) so embed bundle / FcReaderOverlay
  / in-app /voices preview can word-highlight in one round-trip
- Latest FlowerCore.UI.Components from Common master:
  FcReaderOverlay annotation popover (Lane 2γ) + <fc-reader>
  standalone embed bundle (Phase 3)

Built from FlowerCore.TtsReader@06ef815 (master) against
FlowerCore.Common@d23d4c3 (master).
Image imported on rke2-server / rke2-agent1 / rke2-agent2.

apps/fc-ttsreader/fc-ttsreader.yaml

@@ -142,7 +142,7 @@ spec:
         fsGroupChangePolicy: OnRootMismatch
       containers:
         - name: web
-          image: localhost/fc-ttsreader-web:v202604241555backlog
+          image: localhost/fc-ttsreader-web:v202604242301readwithtimings
           imagePullPolicy: Never
           ports:
             - containerPort: 5217