```

feat(feishu): 添加飞书入站事件inbox和混合数据库协调功能

- 实现飞书入站事件持久化inbox机制，支持状态管理、租约锁定和重试退避
- 添加混合数据库基线协调工具，确保平台PostgreSQL结构安全对齐
- 增加运行组件心跳检测和readiness就绪检查机制
- 实现app_ticket事件的安全轮换和验证处理
- 添加生产环境运行编排和fail-closed安全机制
- 支持webhook快速确认和长连接独立进程处理
- 完善个人数据擦除时的待处理事件清理功能
```

app/modules/feishu/constants.py

@@ -21,6 +21,20 @@ class FeishuEventSource(StrEnum):
     LONG_CONNECTION = "long_connection"
 
 
+class FeishuInboundStatus(StrEnum):
+    PENDING = "pending"
+    PROCESSING = "processing"
+    SUCCEEDED = "succeeded"
+    RETRY = "retry"
+    FAILED = "failed"
+
+
+class FeishuEventTransport(StrEnum):
+    DISABLED = "disabled"
+    WEBHOOK = "webhook"
+    LONG_CONNECTION = "long_connection"
+
+
 class FeishuPayloadKey(StrEnum):
     APP_ACCESS_TOKEN = "app_access_token"
     APP_ID = "app_id"
@@ -180,6 +194,10 @@ FEISHU_RECEIVE_ID_MISSING = "receive_id or FEISHU_DEFAULT_CHAT_ID is required"
 FEISHU_SUCCESS_CODE = 0
 FEISHU_DEFAULT_TOKEN_EXPIRE_SECONDS = 7200
 FEISHU_TOKEN_EXPIRE_SAFETY_SECONDS = 300
+FEISHU_INBOUND_BATCH_SIZE = 100
+FEISHU_INBOUND_LEASE_SECONDS = 300
+FEISHU_INBOUND_MAX_ATTEMPTS = 4
+FEISHU_INBOUND_RETRY_DELAYS_SECONDS = (60, 300, 900)
 FEISHU_AI_REPLY_TITLE = "AI 回复"
 FEISHU_EMPTY_CARD_TEXT = "暂无数据"
 FEISHU_MENTION_PATTERN = r"@\S+"