feat: 双Token认证(Access 2h/Refresh 7d) + 通知系统(转交/驳回自动推送)

backend/app/schemas/notification.py

@@ -0,0 +1,26 @@
+"""通知 Pydantic Schema"""
+from __future__ import annotations
+import uuid
+from datetime import datetime
+from pydantic import BaseModel, Field
+
+
+class NotificationResponse(BaseModel):
+    """通知列表响应"""
+    id: uuid.UUID
+    user_id: str
+    title: str
+    content: str
+    type: str
+    task_id: uuid.UUID | None = None
+    is_read: bool
+    created_at: datetime
+
+    model_config = {"from_attributes": True}
+
+
+class NotificationListResponse(BaseModel):
+    """通知分页列表"""
+    notifications: list[NotificationResponse]
+    total: int
+    unread_count: int