chore: initial commit

Laimiao agent v2 service: agent orchestration, sessions, billing,
gateway client, skills catalog, auth, config, plus tests.

docker-compose.yml

@@ -0,0 +1,39 @@
+services:
+  agent:
+    build: .
+    image: laimiao-agent:latest
+    init: true
+    restart: unless-stopped
+    env_file:
+      - .env
+    environment:
+      NODE_ENV: production
+      HOST: 0.0.0.0
+      PORT: "8100"
+      DATA_DIR: /app/data
+    ports:
+      - "127.0.0.1:8100:8100"
+    read_only: true
+    tmpfs:
+      - /tmp:rw,noexec,nosuid,nodev,size=64m
+    volumes:
+      - agent-data:/app/data
+    user: "1000:1000"
+    cap_drop:
+      - ALL
+    security_opt:
+      - no-new-privileges:true
+    pids_limit: 256
+    healthcheck:
+      test:
+        - CMD
+        - node
+        - -e
+        - "fetch('http://127.0.0.1:8100/health').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))"
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 20s
+
+volumes:
+  agent-data: