feat: REST API + Web-Frontend für Kalenderübersicht

- FastAPI Backend mit /api/events, /api/events/{id}, /api/health Endpoints
- Optionale Suche nach Event-Titel (Query Parameter ?search=...)
- Jinja2 Web-Frontend auf / mit Suchfeld
- Shared DB Connection Module (api/database.py)
- Docker Compose: calendar-api Service hinzugefügt
- Sync.py refactored: nutzt shared database.py

docker-compose.yml

@@ -5,6 +5,7 @@ services:
     image: ghcr.io/skoelle/calender_sync:latest
     container_name: calendar-sync
     restart: unless-stopped
+    command: ["python", "sync.py"]
 
     environment:
       - ICS_URL=${ICS_URL}
@@ -22,6 +23,26 @@ services:
       - LOG_LEVEL=${LOG_LEVEL:-INFO}
       - HEALTHCHECK_URL=${HEALTHCHECK_URL:-}
 
+    networks:
+      - docker-backend
+
+  calendar-api:
+    image: ghcr.io/skoelle/calender_sync:latest
+    container_name: calendar-api
+    restart: unless-stopped
+    command: ["uvicorn", "api.main:app", "--host", "0.0.0.0", "--port", "8000"]
+
+    ports:
+      - "${API_PORT:-8000}:8000"
+
+    environment:
+      - DB_HOST=${DB_HOST:-mariadb.fritz.box}
+      - DB_PORT=${DB_PORT:-3306}
+      - DB_NAME=${DB_NAME:-calendar_sync}
+      - DB_USER=${DB_USER}
+      - DB_PASSWORD=${DB_PASSWORD}
+      - LOG_LEVEL=${LOG_LEVEL:-INFO}
+
     labels:
       - "com.centurylinklabs.watchtower.enable=true"