```

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/dashboard/service.py

@@ -16,8 +16,14 @@ from app.modules.business.models import (
     WorkTask,
 )
 from app.modules.business.service import serialize_model
+from app.modules.events.constants import EventStatus
+from app.modules.events.models import DomainEvent
 from app.modules.reports.constants import ReportPushStatus
 from app.modules.risk.service import RiskService
+from app.modules.workflows.constants import WorkflowStatus
+from app.modules.workflows.models import WorkflowInstance
+from app.modules.writebacks.constants import WritebackStatus
+from app.modules.writebacks.models import OfficialWritebackRun
 
 
 class DashboardService:
@@ -41,6 +47,24 @@ class DashboardService:
             RiskEvent.assigned_to.is_(None),
         )
         failed_push_runs = self._count(ReportPushRun, ReportPushRun.status == ReportPushStatus.FAILED)
+        pending_events = self._count(DomainEvent, DomainEvent.status == EventStatus.PENDING)
+        failed_events = self._count(DomainEvent, DomainEvent.status == EventStatus.FAILED)
+        running_workflows = self._count(
+            WorkflowInstance,
+            WorkflowInstance.status == WorkflowStatus.RUNNING,
+        )
+        failed_workflows = self._count(
+            WorkflowInstance,
+            WorkflowInstance.status == WorkflowStatus.FAILED,
+        )
+        disabled_writebacks = self._count(
+            OfficialWritebackRun,
+            OfficialWritebackRun.status == WritebackStatus.DISABLED,
+        )
+        failed_writebacks = self._count(
+            OfficialWritebackRun,
+            OfficialWritebackRun.status == WritebackStatus.FAILED,
+        )
         latest_reports = self.db.execute(
             select(WorkReport).order_by(WorkReport.id.desc()).limit(5)
         ).scalars()
@@ -62,6 +86,12 @@ class DashboardService:
                 "open_risk_events": open_risk_events,
                 "unassigned_open_risks": unassigned_open_risks,
                 "failed_push_runs": failed_push_runs,
+                "pending_events": pending_events,
+                "failed_events": failed_events,
+                "running_workflows": running_workflows,
+                "failed_workflows": failed_workflows,
+                "disabled_writebacks": disabled_writebacks,
+                "failed_writebacks": failed_writebacks,
                 "risk_level": risk_summary["risk_level"],
                 "risk_score": float(risk_summary["risk_score"]),
             },