```

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/feishu/app_tickets.py

@@ -0,0 +1,63 @@
+from sqlalchemy import select
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.orm import Session
+
+from app.core.utils.time import utc_now
+from app.modules.feishu.models import FeishuAppTicket
+
+APP_TICKET_EVENT_TYPE = "app_ticket"
+APP_TICKET_PAYLOAD_KEY = "app_ticket"
+
+
+class FeishuAppTicketService:
+    """Persist the latest ticket received through a verified Feishu event."""
+
+    def __init__(self, db: Session):
+        self.db = db
+
+    def get_ticket(self, app_id: str) -> str | None:
+        app_id_value = str(app_id).strip()
+        if not app_id_value:
+            return None
+        return self.db.scalar(
+            select(FeishuAppTicket.app_ticket).where(
+                FeishuAppTicket.app_id == app_id_value
+            )
+        )
+
+    def store_verified(self, app_id: str, ticket: str) -> FeishuAppTicket:
+        app_id_value = str(app_id).strip()
+        ticket_value = str(ticket).strip()
+        if not app_id_value or not ticket_value:
+            raise ValueError("Verified Feishu app ticket fields are required")
+
+        now = utc_now()
+        record = self.db.execute(
+            select(FeishuAppTicket)
+            .where(FeishuAppTicket.app_id == app_id_value)
+            .with_for_update()
+        ).scalar_one_or_none()
+        if record is None:
+            record = FeishuAppTicket(
+                app_id=app_id_value,
+                app_ticket=ticket_value,
+                received_at=now,
+                updated_at=now,
+            )
+            try:
+                with self.db.begin_nested():
+                    self.db.add(record)
+                    self.db.flush()
+            except IntegrityError:
+                record = self.db.execute(
+                    select(FeishuAppTicket)
+                    .where(FeishuAppTicket.app_id == app_id_value)
+                    .with_for_update()
+                ).scalar_one()
+
+        record.app_ticket = ticket_value
+        record.received_at = now
+        record.updated_at = now
+        self.db.commit()
+        self.db.refresh(record)
+        return record