feat(monitor): 组头上加一个跳到博主主页的按钮

`creator_hash` 是单向的，拼不出主页地址 —— 所以这个 id 必须在采集时单独存下来。
抖音的资料接口本来就返回 sec_uid，只是之前没落库。

* `monitor_creator_stat` 加 `creator_id` 列（老数据默认空，下一次采集补上）；
* 链接在 `adapters.creator_url()` 里拼，**空串是有意义的返回值**：平台不认识、
  或者没拿到 id，就返回空，界面据此不画按钮 —— 画一个点开 404 的按钮比不画糟；
* 没有作品的博主照样有链接：他恰恰是你想点进去看的那个人。

已知缺口：小红书那条路（爬虫子进程）根本不落创作者资料，所以那边没有链接。

tests/test_monitor_creators.py

@@ -139,6 +139,7 @@ async def _add_stat(
     works: int | None = 42,
     creator_hash: str = CREATOR_HASH,
     captured_at: int = 1,
+    creator_id: str = "",
 ) -> None:
     async with monitor_db.get_session() as session:
         session.add(
@@ -147,6 +148,7 @@ async def _add_stat(
                 run_id=run_id,
                 creator_hash=creator_hash,
                 nickname=NICKNAME,
+                creator_id=creator_id,
                 fans=fans,
                 total_favorited=total_favorited,
                 works_count=works,
@@ -320,3 +322,48 @@ class TestCreatorList:
         assert len(creators) == 2
         assert {row["creator_hash"] for row in creators} == {CREATOR_HASH}
         assert sum(row["note_count"] for row in creators) == 2
+
+
+class TestCreatorProfileLink:
+    """组头上那个「跳到他主页」的按钮。
+
+    它要的是**平台上的主页 id**，不是 ``creator_hash``（哈希单向，拼不出地址）。所以
+    这个 id 是采集资料时单独存下来的；拿不到就返回空串让界面不画按钮。
+    """
+
+    @pytest.mark.asyncio
+    async def test_the_link_is_built_from_the_stored_id(self, client):
+        task_id = await _seed_task(platform="dy")
+        await _add_stat(task_id, run_id=1, fans=1, creator_id="MS4wLjABAAAAsomebody")
+
+        creators = await _creators(client, "dy")
+
+        assert creators[0]["creator_url"] == (
+            "https://www.douyin.com/user/MS4wLjABAAAAsomebody"
+        )
+
+    @pytest.mark.asyncio
+    async def test_no_id_means_no_link(self, client):
+        """没采到主页 id 就不给链接 —— 画一个点开 404 的按钮比不画糟。"""
+        task_id = await _seed_task(platform="dy")
+        await _add_stat(task_id, run_id=1, fans=1, creator_id="")
+
+        assert (await _creators(client, "dy"))[0]["creator_url"] == ""
+
+    @pytest.mark.asyncio
+    async def test_a_creator_with_only_works_has_no_link_either(self, client):
+        """小红书那条路根本不落创作者资料，所以那边永远是空的 —— 这是已知的、可接受的。"""
+        await _seed(platform="xhs")
+
+        assert (await _creators(client, "xhs"))[0]["creator_url"] == ""
+
+    @pytest.mark.asyncio
+    async def test_a_creator_with_no_works_still_gets_the_link(self, client):
+        """**没有作品的博主照样能跳过去** —— 他恰恰是你想点进去看看发的什么的那个人。"""
+        task_id = await _seed_task(platform="dy")
+        await _add_stat(task_id, run_id=1, fans=1, creator_id="MS4wLjABAAAAquiet")
+
+        creators = await _creators(client, "dy")
+
+        assert creators[0]["note_count"] == 0
+        assert creators[0]["creator_url"].endswith("/user/MS4wLjABAAAAquiet")

tests/test_monitor_ingest.py

@@ -852,6 +852,7 @@ def _profile(creator_hash: str = "hash", **extra) -> Dict[str, Any]:
     record: Dict[str, Any] = {
         "creator_hash": creator_hash,
         "nickname": "博主",
+        "creator_id": "MS4wLjABAAAAtestsuid",
         "unique_id": "abc",
         "fans": 12000,
         "total_favorited": 83000,
@@ -976,3 +977,36 @@ class TestCreatorStatSnapshots:
         )
 
         assert [s.fans for s in stats] == [12000, 12300]
+
+
+class TestCreatorIdIsStored:
+    """主页 id 要单独存下来 —— ``creator_hash`` 是单向的，拼不出主页地址。"""
+
+    @pytest.mark.asyncio
+    async def test_the_profile_id_lands_on_the_snapshot(self, db, tmp_path):
+        task = await _make_task(db, platform="dy")
+        run = await _make_run(db, task, started_at=1)
+        _write_run_dir(
+            tmp_path, [_dy_note("1")], comments=[], subdir="douyin", profiles=[_profile()]
+        )
+        await ingest_run(db, run, task, tmp_path)
+
+        stat = await db.scalar(select(MonitorCreatorStat))
+
+        assert stat.creator_id == "MS4wLjABAAAAtestsuid"
+
+    @pytest.mark.asyncio
+    async def test_a_missing_id_is_empty_not_a_crash(self, db, tmp_path):
+        """老数据/别的平台没有这个字段 —— 空串，界面据此不画按钮。"""
+        task = await _make_task(db, platform="dy")
+        run = await _make_run(db, task, started_at=1)
+        _write_run_dir(
+            tmp_path,
+            [_dy_note("1")],
+            comments=[],
+            subdir="douyin",
+            profiles=[_profile(creator_id="")],
+        )
+        await ingest_run(db, run, task, tmp_path)
+
+        assert (await db.scalar(select(MonitorCreatorStat))).creator_id == ""

tests/test_platforms.py

@@ -389,3 +389,30 @@ class TestLegacyKeyMigration:
         assert "xhs_cookie" not in rows
 
         await monitor_db.dispose_engine()
+
+
+class TestCreatorUrl:
+    """博主主页链接。
+
+    注意它要的是**平台上的主页 id**（抖音是 sec_uid），不是 ``creator_hash`` —— 哈希是
+    单向的，拼不出地址。所以这条链路上少任何一环（采集没存 id、平台上没有这个博主、
+    平台不认识）都必须返回空串，让界面干脆不画按钮，而不是给一个点开 404 的链接。
+    """
+
+    def test_douyin(self):
+        assert (
+            adapters.creator_url("dy", "MS4wLjABAAAAabc-123")
+            == "https://www.douyin.com/user/MS4wLjABAAAAabc-123"
+        )
+
+    def test_xiaohongshu(self):
+        assert (
+            adapters.creator_url("xhs", "5f8a1b2c3d4e5f6a7b8c9d0e")
+            == "https://www.xiaohongshu.com/user/profile/5f8a1b2c3d4e5f6a7b8c9d0e"
+        )
+
+    def test_no_id_is_empty_not_a_broken_link(self):
+        assert adapters.creator_url("dy", "") == ""
+
+    def test_an_unknown_platform_is_empty_not_a_crash(self):
+        assert adapters.creator_url("nope", "abc") == ""