fix(daily_check): 期望窗口未到不应判 missed

work #07 (2026-07-03)：daily_check 在日内运行时（如 09:00/12:00/15:00）
误把'还没到时间'的任务标 missed。SCHEDULE 里有 window_end 但 _classify_task
没用到——直接判 last_success vs today_start。

修复：判定 missed 之前先比较 now vs window_end；未到则返回 not_yet
（新状态，不进 alerts），已过但今日未成功走原 missed 路径。解析失败
回落旧逻辑不引入风险。

验证 4 个用例：12:00 kline_daily→not_yet, 18:00 kline_daily→missed,
18:00 longhubang→not_yet, 22:30 longhubang→missed。全部正确。

Co-Authored-By: Claude <noreply@anthropic.com>

bin/daily_sync_check.py

@@ -133,6 +133,28 @@ def _classify_task(
     last_failure = _parse_ts(row.get("last_failure_at"))
     status_field = row.get("status", "idle")
 
+    # 期望窗口是否已过？未到窗口不应判 missed
+    if spec and spec.get("window_end") and not status_field == "running":
+        try:
+            hh, mm = spec["window_end"].split(":")
+            window_end_dt = datetime.combine(check_date, datetime.min.time()).replace(
+                hour=int(hh), minute=int(mm)
+            )
+            if now < window_end_dt:
+                return {
+                    "dataset_id": dataset_id,
+                    "name": row.get("name", ""),
+                    "status": "not_yet",
+                    "reason": f"期望窗口 {spec['window_end']} 未到（now={now.strftime('%H:%M')}）",
+                    "last_success_at": row.get("last_success_at"),
+                    "last_failure_at": row.get("last_failure_at"),
+                    "last_error": row.get("last_error"),
+                    "needs_resync": row.get("needs_resync", 0),
+                    "status_field": status_field,
+                }
+        except (ValueError, AttributeError):
+            pass  # 解析失败回落到旧逻辑
+
     # 还在跑（卡死检测）
     if status_field == "running":
         started = _parse_ts(row.get("started_at"))
@@ -399,6 +421,7 @@ def print_summary(report: dict[str, Any]) -> None:
             "running": "🔄",
             "never_run": "❓",
             "not_expected": "⏸ ",
+            "not_yet": "⏳",
             "disabled": "🚫",
         }.get(t["status"], "·")
         print(f"  {icon} [{t['status']:>13}] {t['dataset_id']:<20} {t['reason']}")