```

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/personalization/models.py

@@ -0,0 +1,131 @@
+from datetime import datetime
+from uuid import uuid4
+
+from sqlalchemy import DateTime, ForeignKey, Integer, String, Text, UniqueConstraint
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.core.database import Base
+from app.core.utils.time import utc_now
+from app.modules.feishu_users.models import FeishuUser
+from app.modules.personalization.constants import (
+    CONVERSATION_CODE_PREFIX,
+    PREFERENCE_CODE_PREFIX,
+    PreferenceSource,
+)
+
+
+def _public_code(prefix: str) -> str:
+    return f"{prefix}-{uuid4().hex}"
+
+
+class UserPreference(Base):
+    __tablename__ = "user_preferences"
+    __table_args__ = (
+        UniqueConstraint(
+            "owner_id",
+            "category",
+            "normalized_value",
+            name="uq_user_preference_owner_category_value",
+        ),
+    )
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    code: Mapped[str] = mapped_column(
+        String(64),
+        default=lambda: _public_code(PREFERENCE_CODE_PREFIX),
+        unique=True,
+        index=True,
+    )
+    owner_id: Mapped[int] = mapped_column(
+        ForeignKey("feishu_users.id", ondelete="CASCADE"),
+        index=True,
+    )
+    owner: Mapped[FeishuUser] = relationship()
+    category: Mapped[str] = mapped_column(String(32), index=True)
+    value: Mapped[str] = mapped_column(Text)
+    normalized_value: Mapped[str] = mapped_column(String(1000))
+    source: Mapped[str] = mapped_column(
+        String(32),
+        default=PreferenceSource.EXPLICIT,
+        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 AIConversation(Base):
+    __tablename__ = "ai_conversations"
+    __table_args__ = (
+        UniqueConstraint(
+            "owner_id",
+            "chat_type",
+            "chat_key",
+            name="uq_ai_conversation_owner_chat",
+        ),
+    )
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    code: Mapped[str] = mapped_column(
+        String(64),
+        default=lambda: _public_code(CONVERSATION_CODE_PREFIX),
+        unique=True,
+        index=True,
+    )
+    owner_id: Mapped[int] = mapped_column(
+        ForeignKey("feishu_users.id", ondelete="CASCADE"),
+        index=True,
+    )
+    owner: Mapped[FeishuUser] = relationship()
+    chat_type: Mapped[str] = mapped_column(String(32), index=True)
+    chat_key: Mapped[str] = mapped_column(String(256), 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,
+        index=True,
+    )
+    messages: Mapped[list["AIConversationMessage"]] = relationship(
+        back_populates="conversation",
+        cascade="all, delete-orphan",
+        passive_deletes=True,
+        order_by="AIConversationMessage.id",
+    )
+
+
+class AIConversationMessage(Base):
+    __tablename__ = "ai_conversation_messages"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    conversation_id: Mapped[int] = mapped_column(
+        ForeignKey("ai_conversations.id", ondelete="CASCADE"),
+        index=True,
+    )
+    role: Mapped[str] = mapped_column(String(32), index=True)
+    content: Mapped[str] = mapped_column(Text)
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=utc_now, index=True)
+    conversation: Mapped[AIConversation] = relationship(back_populates="messages")
+
+
+class PersonalDataErasureRequest(Base):
+    __tablename__ = "personal_data_erasure_requests"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    owner_id: Mapped[int] = mapped_column(
+        ForeignKey("feishu_users.id", ondelete="CASCADE"),
+        unique=True,
+        index=True,
+    )
+    owner: Mapped[FeishuUser] = relationship()
+    token_hash: Mapped[str] = mapped_column(String(64))
+    expires_at: Mapped[datetime] = mapped_column(DateTime, 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,
+    )