docs: mark fs-container-app done in Phase E

Author: FreeSynergy

de/todo/TODO.md

@@ -142,10 +142,9 @@ D24.[ ] fs-bridge-sdk → löschen
 
 **Reihenfolge:**
 
-**Erledigt ✅:** fs-config, fs-bus, fs-db, fs-inventory, fs-session, fs-registry, fs-init, fs-icons, fs-browser, fs-store, fs-lenses, fs-tasks, fs-bots, fs-managers
+**Erledigt ✅:** fs-config, fs-bus, fs-db, fs-inventory, fs-session, fs-registry, fs-init, fs-icons, fs-browser, fs-store, fs-lenses, fs-tasks, fs-bots, fs-managers, fs-container-app
 
 ```
-E15.[ ] fs-container-app — Container-App Manager UI (nach Phase C4)
 E16.[ ] fs-ai       — AI Runtime + Proxy (nach Phase C3)
 E17.[ ] fs-node     — Server (Auth, S3, Federation, externer Zugriff)
         → größtes und komplexestes Repo, erst wenn alle Libs stabil sind