feat: comprehensive project improvements

- Fix 14 Clippy warnings across server and bot-sdk
- Add 67 unit tests (32 bot-sdk, 34 server, 1 doctest)
- Add Prometheus metrics endpoint (/api/metrics)
- Add structured JSON logging (EIFELDC_LOG_FORMAT=json)
- Add release workflow (Docker push + GitHub Release + Tauri builds)
- Add rate limiting middleware (EIFELDC_RATE_LIMIT)
- Add CORS restriction (EIFELDC_CORS_ORIGINS)
- Add session token expiry (EIFELDC_SESSION_TTL)
- Add input validation (username/password/homeserver length limits)
- Add upload size limit (EIFELDC_MAX_UPLOAD_MB)
- Upgrade Tauri client from v1 to v2
- Add session store with SQLite persistence
- Add proper error types and cleanup across all crates
- Format all code with cargo fmt
- Update CI pipeline with fmt, clippy, test, frontend, and Tauri checks
- Add README with full API reference and setup guide

infra/docker-compose.yml

@@ -1,5 +1,3 @@
-version: "3.8"
-
 services:
   eifeldc:
     build:
@@ -12,12 +10,21 @@ services:
     environment:
       - EIFELDC_STATIC_DIR=/usr/share/eifeldc/client
       - RUST_LOG=eifeldc_server=info,tower_http=info
+      - LIVEKIT_API_KEY=${LIVEKIT_API_KEY:-devkey}
+      - LIVEKIT_API_SECRET=${LIVEKIT_API_SECRET:-devsecret}
+      - LIVEKIT_URL=ws://livekit:7880
+      - SYNAPSE_URL=http://synapse:8008
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:3000/api/current-user"]
       interval: 15s
       timeout: 5s
       retries: 3
       start_period: 10s
+    deploy:
+      resources:
+        limits:
+          memory: 512M
+          cpus: "1.0"
     logging:
       driver: json-file
       options:
@@ -48,6 +55,11 @@ services:
       timeout: 5s
       retries: 5
       start_period: 30s
+    deploy:
+      resources:
+        limits:
+          memory: 1G
+          cpus: "2.0"
     logging:
       driver: json-file
       options:
@@ -72,6 +84,11 @@ services:
       interval: 5s
       timeout: 5s
       retries: 5
+    deploy:
+      resources:
+        limits:
+          memory: 512M
+          cpus: "1.0"
     logging:
       driver: json-file
       options:
@@ -95,6 +112,32 @@ services:
         max-size: "10m"
         max-file: "3"
 
+  livekit:
+    image: livekit/livekit-server:latest
+    container_name: eifeldc-livekit
+    restart: unless-stopped
+    ports:
+      - "7880:7880"
+      - "7881:7881"
+      - "7882:7882/udp"
+      - "50000-50200:50000-50200/udp"
+    environment:
+      - LIVEKIT_KEYS=${LIVEKIT_API_KEY:-devkey}: ${LIVEKIT_API_SECRET:-devsecret}
+    command: --dev --node-ip ${LIVEKIT_NODE_IP:-127.0.0.1}
+    healthcheck:
+      test: ["CMD", "wget", "--spider", "-q", "http://localhost:7880"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+      start_period: 5s
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "3"
+    networks:
+      - eifeldc
+
   nginx:
     image: nginx:alpine
     container_name: eifeldc-nginx
@@ -110,6 +153,8 @@ services:
         condition: service_healthy
       synapse:
         condition: service_healthy
+      livekit:
+        condition: service_healthy
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:80/"]
       interval: 15s