feat: EOD 23:15 seal + midnight seed shell for video/fans

Move daily snapshot/fans to 23:15 and add 00:01 seed that clones
last_completed ok=1 rows into today without advancing completed.
Evening runs force through seed markers; growth previous is per-aid
adjacent. Home shows short-update clock + 全站数据 date, and 收录视频
counts.

tests/test_web_queries.py

@@ -626,6 +626,61 @@ def test_snapshot_recent_next_run_follows_completion():
             db.close()
 
 
+
+def test_overview_adjacent_previous_with_seed_and_dual_fields():
+    """seed 当日行存在时，播放增量按片相邻成功日；overview 暴露更新时刻与总数。"""
+    import json
+
+    with tempfile.TemporaryDirectory() as tmp:
+        db, q = setup(tmp)
+        try:
+            repo = Repository(db)
+            today = "2026-11-01"
+            # 克隆上一完成日到今天（不推进 last_completed）
+            for aid in (101, 102):
+                prev = repo.get_snapshot(DATES[-1], aid)
+                metrics = {
+                    k: int(prev[k]) for k in (
+                        "view", "like", "coin", "favorite", "share", "reply", "danmaku"
+                    )
+                }
+                repo.upsert_snapshot(
+                    today, aid, metrics=metrics, ok=True, err=None,
+                    captured_at=FIXED_NOW, src="seed",
+                )
+            repo.kv_set("snapshot:seeded:" + today, "1")
+            # 小时短更新任务记录
+            repo.kv_set(
+                "task:last:snapshot_recent",
+                json.dumps({
+                    "name": "snapshot_recent", "ok": True,
+                    "started_at": FIXED_NOW - 60, "finished_at": FIXED_NOW - 30,
+                    "error": None, "summary": {},
+                }),
+            )
+            DASHBOARD_CACHE.clear()
+            overview = q.overview()
+            assert overview["data_date"] == DATES[-1]
+            assert overview["updated_at"] == FIXED_NOW - 30
+            assert overview["counts"]["total"] == (
+                overview["counts"]["active"]
+                + overview["counts"]["unfaved"]
+                + overview["counts"]["removed"]
+            )
+            # 当前=seed(=完成日数值)，相邻 previous=完成日本身 → 增量 0
+            assert overview["view_delta_available"] is True
+            assert overview["view_delta"] == 0
+
+            growth = q.list_videos(sort="growth", growth_days=1)
+            assert growth["available"] is True
+            for item in growth["items"]:
+                if item["aid"] in (101, 102):
+                    assert item["growth"]["available"] is True
+                    assert item["growth"]["delta"] == 0
+                    assert item["growth"]["gap_days"] == 1
+        finally:
+            db.close()
+
 def main_test():
     test_overview()
     test_video_listing_filters_and_sorting()
@@ -643,6 +698,7 @@ def main_test():
     test_system_next_runs_follow_last_completion_not_wall_clock()
     test_growth_auto_falls_back_to_one_day()
     test_snapshot_recent_next_run_follows_completion()
+    test_overview_adjacent_previous_with_seed_and_dual_fields()
     print("OK: Web 查询层总览/榜单/详情/UP/时长效率/粉丝/候选/系统/访问统计测试全部通过")