refactor: 教学版移除全平台用户个人信息采集与持久化

- 用户 ID 转为匿名 creator_hash，昵称中间脱敏，IP/头像/主页/签名/性别不再采集
- 覆盖 xhs/weibo/bilibili/douyin/kuaishou/tieba/zhihu 7 个平台
- 删除 7 张 creator 档案 ORM 表，15 张内容/评论表新增 creator_hash 列
- B 站禁用粉丝/关注/联系人列表抓取
- 新增 tools/user_hash.py 与 4 个平台的 mock+SQLite 端到端测试

测试: pytest tests/test_no_user_info.py tests/test_weibo_no_user_info.py tests/test_douyin_no_user_info.py tests/test_kuaishou_no_user_info.py (21 passed)

store/weibo/_store_impl.py

@@ -35,7 +35,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 
 import config
 from base.base_crawler import AbstractStore
-from database.models import WeiboCreator, WeiboNote, WeiboNoteComment
+from database.models import WeiboNote, WeiboNoteComment
 from tools import utils, words
 from tools.async_file_writer import AsyncFileWriter
 from database.db_session import get_session
@@ -58,6 +58,13 @@ def calculate_number_of_files(file_store_path: str) -> int:
         return 1
 
 
+def _filter_model_fields(model_cls, item: Dict) -> Dict:
+    """只保留目标 ORM 模型已有的列，避免把已删除/多余字段（如 avatar/gender/
+    profile_url/ip_location/user_id）传给 ORM 构造而报错。教学版兜底保护。"""
+    allowed = {col.name for col in model_cls.__table__.columns}
+    return {k: v for k, v in item.items() if k in allowed}
+
+
 class WeiboCsvStoreImplement(AbstractStore):
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
@@ -88,13 +95,14 @@ class WeiboCsvStoreImplement(AbstractStore):
     async def store_creator(self, creator: Dict):
         """
         Weibo creator CSV storage implementation
+        教学版：不采集/持久化创作者个人信息，空操作。
         Args:
             creator:
 
         Returns:
 
         """
-        await self.writer.write_to_csv(item_type="creators", item=creator)
+        pass
 
 
 class WeiboDbStoreImplement(AbstractStore):
@@ -108,6 +116,8 @@ class WeiboDbStoreImplement(AbstractStore):
         Returns:
 
         """
+        # 教学版兜底：过滤掉已删除/多余字段，确保不会把 user_id/avatar 等传给 ORM
+        content_item = _filter_model_fields(WeiboNote, content_item)
         note_id = int(content_item.get("note_id"))
         content_item["note_id"] = note_id
         async with get_session() as session:
@@ -135,6 +145,8 @@ class WeiboDbStoreImplement(AbstractStore):
         Returns:
 
         """
+        # 教学版兜底：过滤掉已删除/多余字段，确保不会把 user_id/avatar 等传给 ORM
+        comment_item = _filter_model_fields(WeiboNoteComment, comment_item)
         comment_id = int(comment_item.get("comment_id"))
         comment_item["comment_id"] = comment_id
         comment_item["note_id"] = int(comment_item.get("note_id", 0) or 0)
@@ -162,29 +174,14 @@ class WeiboDbStoreImplement(AbstractStore):
     async def store_creator(self, creator: Dict):
         """
         Weibo creator DB storage implementation
+        教学版：不采集/持久化创作者个人信息，空操作（WeiboCreator 表已删除）。
         Args:
             creator:
 
         Returns:
 
         """
-        user_id = int(creator.get("user_id"))
-        creator["user_id"] = user_id
-        async with get_session() as session:
-            stmt = select(WeiboCreator).where(WeiboCreator.user_id == user_id)
-            res = await session.execute(stmt)
-            db_creator = res.scalar_one_or_none()
-            if db_creator:
-                db_creator.last_modify_ts = utils.get_current_timestamp()
-                for key, value in creator.items():
-                    if hasattr(db_creator, key):
-                        setattr(db_creator, key, value)
-            else:
-                creator["add_ts"] = utils.get_current_timestamp()
-                creator["last_modify_ts"] = utils.get_current_timestamp()
-                db_creator = WeiboCreator(**creator)
-                session.add(db_creator)
-            await session.commit()
+        pass
 
 
 class WeiboJsonStoreImplement(AbstractStore):
@@ -217,13 +214,14 @@ class WeiboJsonStoreImplement(AbstractStore):
     async def store_creator(self, creator: Dict):
         """
         creator JSON storage implementation
+        教学版：不采集/持久化创作者个人信息，空操作。
         Args:
             creator:
 
         Returns:
 
         """
-        await self.writer.write_single_item_to_json(item_type="creators", item=creator)
+        pass
 
 
 class WeiboJsonlStoreImplement(AbstractStore):
@@ -238,7 +236,8 @@ class WeiboJsonlStoreImplement(AbstractStore):
         await self.writer.write_to_jsonl(item_type="comments", item=comment_item)
 
     async def store_creator(self, creator: Dict):
-        await self.writer.write_to_jsonl(item_type="creators", item=creator)
+        # 教学版：不采集/持久化创作者个人信息，空操作。
+        pass
 
 
 class WeiboSqliteStoreImplement(WeiboDbStoreImplement):
@@ -291,19 +290,11 @@ class WeiboMongoStoreImplement(AbstractStore):
     async def store_creator(self, creator_item: Dict):
         """
         Store creator information to MongoDB
+        教学版：不采集/持久化创作者个人信息，空操作。
         Args:
             creator_item: Creator data
         """
-        user_id = creator_item.get("user_id")
-        if not user_id:
-            return
-
-        await self.mongo_store.save_or_update(
-            collection_suffix="creators",
-            query={"user_id": user_id},
-            data=creator_item
-        )
-        utils.logger.info(f"[WeiboMongoStoreImplement.store_creator] Saved creator {user_id} to MongoDB")
+        pass
 
 
 class WeiboExcelStoreImplement: