```

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
```

app/modules/events/routes.py

@@ -0,0 +1,41 @@
+from fastapi import APIRouter, Depends, Query
+from sqlalchemy.orm import Session
+
+from app.core.database import get_db
+from app.core.security import require_api_key
+from app.modules.events.constants import EventResponseKey
+from app.modules.events.service import EventService, _serialize_event
+
+router = APIRouter(dependencies=[Depends(require_api_key)])
+
+
+@router.get("")
+def list_events(
+    status: str | None = None,
+    event_type: str | None = None,
+    limit: int = Query(default=100, ge=1, le=500),
+    db: Session = Depends(get_db),
+) -> dict:
+    return {
+        EventResponseKey.ITEMS: EventService(db).list_events(
+            status_filter=status,
+            event_type=event_type,
+            limit=limit,
+        )
+    }
+
+
+@router.post("/{event_id}/dispatch")
+def dispatch_event(
+    event_id: str,
+    db: Session = Depends(get_db),
+) -> dict:
+    return {EventResponseKey.EVENT: _serialize_event(EventService(db).dispatch_event(event_id))}
+
+
+@router.post("/dispatch-pending")
+def dispatch_pending(
+    limit: int = Query(default=100, ge=1, le=500),
+    db: Session = Depends(get_db),
+) -> dict:
+    return {EventResponseKey.ITEMS: EventService(db).dispatch_pending(limit=limit)}