Add complete playout service, chat backend, frontend with HLS player and live chat, Docker integration with health checks, updated CHANGELOG and architecture docs

docker-compose.yml

@@ -11,11 +11,18 @@ services:
       - .env
     volumes:
       - ./data/playlist:/app/playlist:ro
-      - ./data/hls:/app/hls
+      - ./data/media:/app/media:ro
+      - ./data/hls:/app/hls:rw
     networks:
       - linearvoid-net
     depends_on:
       - redis
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8081/health"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 10s
 
   chat:
     build:
@@ -27,11 +34,19 @@ services:
       - .env
     ports:
       - "${CHAT_PORT:-3000}:3000"
+    volumes:
+      - ./data/chat:/app:rw # SQLite database and logs
     networks:
       - linearvoid-net
     depends_on:
       - redis
       - db
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3000/health"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 10s
 
   nginx:
     build: