```

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_users/models.py

@@ -0,0 +1,63 @@
+from datetime import datetime, time
+
+from sqlalchemy import DateTime, Integer, String, Time, UniqueConstraint
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.core.database import Base
+from app.core.utils.time import utc_now
+from app.modules.feishu_users.constants import (
+    DEFAULT_FEISHU_USER_TIMEZONE,
+    FeishuUserRole,
+    FeishuUserStatus,
+)
+
+
+class FeishuUser(Base):
+    __tablename__ = "feishu_users"
+    __table_args__ = (
+        UniqueConstraint(
+            "tenant_key",
+            "open_id",
+            name="uq_feishu_user_tenant_open_id",
+        ),
+    )
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    code: Mapped[str] = mapped_column(String(64), unique=True, index=True)
+    tenant_key: Mapped[str] = mapped_column(String(128), index=True)
+    open_id: Mapped[str] = mapped_column(String(128), index=True)
+    union_id: Mapped[str | None] = mapped_column(String(128), nullable=True, index=True)
+    user_id: Mapped[str | None] = mapped_column(String(128), nullable=True, index=True)
+    role: Mapped[str] = mapped_column(
+        String(32),
+        default=FeishuUserRole.USER,
+        index=True,
+    )
+    status: Mapped[str] = mapped_column(
+        String(32),
+        default=FeishuUserStatus.ACTIVE,
+        index=True,
+    )
+    timezone: Mapped[str] = mapped_column(
+        String(64),
+        default=DEFAULT_FEISHU_USER_TIMEZONE,
+    )
+    quiet_hours_start: Mapped[time | None] = mapped_column(Time, nullable=True)
+    quiet_hours_end: Mapped[time | None] = mapped_column(Time, nullable=True)
+    last_active_at: Mapped[datetime] = mapped_column(DateTime, default=utc_now, index=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=utc_now, index=True)
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime,
+        default=utc_now,
+        onupdate=utc_now,
+    )
+
+
+class FeishuAdminBootstrapTombstone(Base):
+    """Irreversible marker preventing a deleted initial admin from re-bootstrap."""
+
+    __tablename__ = "feishu_admin_bootstrap_tombstones"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    identity_hash: Mapped[str] = mapped_column(String(64), unique=True, index=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=utc_now, index=True)