管理员默认密码 admin/admin，首次登录强制改密码；增加服务器部署配置

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

docker-compose.yml

@@ -24,7 +24,7 @@ services:
       postgres:
         condition: service_healthy
     ports:
-      - "8000:8000"
+      - "4001:8000"
     command: ["uvicorn", "src.api:app", "--host", "0.0.0.0", "--port", "8000"]
 
   web:
@@ -40,7 +40,7 @@ services:
     depends_on:
       - postgres
     ports:
-      - "8080:8080"
+      - "4000:8080"
     volumes:
       - ./data:/app/auth
     restart: unless-stopped