新增管理员接口 GET /profiles/{user_id}/stats，返回用户全部/公开上传数和收藏数

app/schemas.py

@@ -252,3 +252,13 @@ class AdminCloudVisibilityIn(BatchIdsIn):
 
 class BatchUpdateOut(BaseModel):
     updated: int
+
+
+class ProfileStatsOut(BaseModel):
+    user_id: uuid.UUID
+    username: str
+    email: str
+    created_at: datetime
+    cloud_count: int
+    public_cloud_count: int
+    collection_count: int