Erinnerungen & Routinen (A3): Wecker in MC2 + Hermes-Tools

- services/reminders.py: persistenter Store (/srv/models/mc2-reminders.json),
  Wecker-Loop feuert in Briefkasten (Lucy spricht) + Telegram; repeat
  daily/weekdays/weekly; naive Zeiten = Commander-TZ (Europe/Berlin, Box ist UTC);
  verpasste Einmal-Erinnerungen feuern verspätet nach (ehrlich markiert)
- routers/reminders.py: GET/POST/DELETE /api/reminders
- mcp_mc.py: reminder_create/list/delete (Guards, ISO aus Sofort-Kontext)
- announce.notify_telegram als gemeinsamer Helper (sentry nutzt ihn jetzt)
- requirements: tzdata (zoneinfo-Fallback, Windows-Dev)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

backend/app.py

@@ -18,8 +18,8 @@ from fastapi.staticfiles import StaticFiles
 from starlette.requests import Request
 
 from config import FRONTEND_DIST, VERSION
-from routers import agent, connect, gateway_proxy, health, maintenance, memory, models, routing, system, voice
-from services import sentry, warmer
+from routers import agent, connect, gateway_proxy, health, maintenance, memory, models, reminders as reminders_router, routing, system, voice
+from services import reminders, sentry, warmer
 
 # Zentrales Logging — Level via MC_LOG_LEVEL (INFO default). Eine Konfiguration
 # für alle Module (logging.getLogger(__name__)).
@@ -39,6 +39,7 @@ async def lifespan(app: FastAPI):
         log.info("Hirn-Re-Warm-Wächter aktiv (Intervall %ss, Hirn dynamisch aus Hermes-Config)", warmer.INTERVAL)
     if sentry.ENABLED:
         tasks.append(asyncio.create_task(sentry.sentry_loop()))
+    tasks.append(asyncio.create_task(reminders.reminders_loop()))
     try:
         yield
     finally:
@@ -73,6 +74,7 @@ app.include_router(connect.router)
 app.include_router(memory.router)
 app.include_router(agent.router)
 app.include_router(voice.router)  # Sprache: STT/TTS-Proxy + Hermes-Agent-Chat (Voice-Tab)
+app.include_router(reminders_router.router)  # Erinnerungen/Routinen (A3) — feuern in den Briefkasten
 app.include_router(gateway_proxy.router)  # OpenAI-kompatibler /v1-Gateway (model:auto)
 app.include_router(maintenance.router)