```

feat: 添加数据库迁移脚本并更新Dockerfile配置

- 在Dockerfile中添加alembic配置文件和目录的复制指令
- 更新alembic/env.py注册新的模块模型：events、workflows、writebacks
- 生成完整的初始数据库schema迁移脚本，包含以下表：
  - approval_requests, attendance_records, audit_logs, domain_events
  - expenses, feishu_event_receipts, fund_accounts, legacy_sync_runs
  - official_writeback_runs, performance_metrics, policies, procurements
  - projects, report_push_runs, risk_event_actions, risk_events
  - standards, suppliers, work_reports, work_tasks, workflow_actions
  - workflow_instances等21个数据表结构定义
- 在API路由器中添加新模块的路由：events、workflows、writebacks、observability
```

docker-compose.yml

@@ -1,16 +1,86 @@
 services:
+  db:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_USER: ${POSTGRES_USER:-company_ai}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?POSTGRES_PASSWORD is required}
+      POSTGRES_DB: ${POSTGRES_DB:-company_ai}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  redis:
+    image: redis:7-alpine
+    volumes:
+      - redis_data:/data
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  migrate:
+    build: .
+    env_file:
+      - .env
+    environment:
+      DATABASE_URL: postgresql+psycopg://${POSTGRES_USER:-company_ai}:${POSTGRES_PASSWORD:?POSTGRES_PASSWORD is required}@db:5432/${POSTGRES_DB:-company_ai}
+      REDIS_URL: redis://redis:6379/0
+    command: ["alembic", "upgrade", "head"]
+    depends_on:
+      db:
+        condition: service_healthy
+    restart: "no"
+
   api:
     build: .
     env_file:
       - .env
     environment:
+      DATABASE_URL: postgresql+psycopg://${POSTGRES_USER:-company_ai}:${POSTGRES_PASSWORD:?POSTGRES_PASSWORD is required}@db:5432/${POSTGRES_DB:-company_ai}
       REDIS_URL: redis://redis:6379/0
     ports:
       - "8010:8010"
     depends_on:
-      - redis
+      db:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+      migrate:
+        condition: service_completed_successfully
+    healthcheck:
+      test:
+        [
+          "CMD",
+          "python",
+          "-c",
+          "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8010/api/v1/health/live', timeout=3).read()",
+        ]
+      interval: 10s
+      timeout: 5s
+      retries: 5
 
-  redis:
-    image: redis:7-alpine
-    ports:
-      - "6379:6379"
+  worker:
+    build: .
+    env_file:
+      - .env
+    environment:
+      DATABASE_URL: postgresql+psycopg://${POSTGRES_USER:-company_ai}:${POSTGRES_PASSWORD:?POSTGRES_PASSWORD is required}@db:5432/${POSTGRES_DB:-company_ai}
+      REDIS_URL: redis://redis:6379/0
+      TASK_QUEUE_ENABLED: "true"
+    command: ["celery", "-A", "app.tasks.celery_app", "worker", "--loglevel=info"]
+    depends_on:
+      db:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+      migrate:
+        condition: service_completed_successfully
+
+volumes:
+  postgres_data:
+  redis_data: