```

feat: 添加飞书用户模块和订阅功能支持

- 新增feishu_users模块用于处理飞书用户身份验证和权限管理
- 新增subscriptions模块用于处理订阅相关功能
- 新增personalization模块用于个性化服务
- 在alembic迁移配置中注册新的模型模块
- 在API路由器中添加feishu_users和subscriptions路由
- 实现事件调度服务的改进，包括错误处理和状态更新优化
- 添加飞书命令处理的权限检查机制
- 实现飞书应用票据事件处理
- 改进审计日志记录功能
```

app/modules/subscriptions/services/__init__.py

@@ -0,0 +1,39 @@
+from app.modules.subscriptions.services.delivery import (
+    DeliveryGenerationRequest,
+    DeliveryGenerator,
+    DeliverySendRequest,
+    DeliverySender,
+    DeliveryService,
+    PermanentDeliveryError,
+    RetryableDeliveryError,
+)
+from app.modules.subscriptions.services.management import SubscriptionManagementService
+from app.modules.subscriptions.services.scanner import SubscriptionScanner
+from app.modules.subscriptions.services.schedule import (
+    NormalizedSchedule,
+    ScheduleParseError,
+    is_in_quiet_hours,
+    next_occurrence,
+    next_quiet_end,
+    parse_schedule,
+    validate_timezone,
+)
+
+__all__ = [
+    "DeliveryGenerationRequest",
+    "DeliveryGenerator",
+    "DeliverySendRequest",
+    "DeliverySender",
+    "DeliveryService",
+    "NormalizedSchedule",
+    "PermanentDeliveryError",
+    "RetryableDeliveryError",
+    "ScheduleParseError",
+    "SubscriptionManagementService",
+    "SubscriptionScanner",
+    "is_in_quiet_hours",
+    "next_occurrence",
+    "next_quiet_end",
+    "parse_schedule",
+    "validate_timezone",
+]