fix(nas): NAS 监控两检语义修——dmsk 事件驱动域 mtime 阈值放宽 80h(两日 lane exit=0 而 mtime 48h+实证)/vps-mirror 班前查昨日 DONE(早班查当日必空假黄) [nas]

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

scripts/nas_sync/nas_monitor_check.py

@@ -93,9 +93,10 @@ def build_checks(now):
         add(f"nas-corpus_{lane}", f"corpus {lane} 新鲜",
             freshness(age, 34), {"age_h": round(age, 1) if age is not None else None})
 
-    # dmsk 三表 dt 分区(07:10 班)
+    # dmsk 三表 dt 分区(07:10 班)——事件驱动域: 无新披露不写盘(09-26 实证两日
+    # lane exit=0 而 mtime 48h+), mtime 弱信号, 阈值放宽到 80h(漏两个日窗才黄)
     age = dir_age_hours(DMSK_ROOT, now)
-    add("nas-dmsk", "dmsk 三表分区新鲜", freshness(age, 34),
+    add("nas-dmsk", "dmsk 三表分区新鲜", freshness(age, 80),
         {"age_h": round(age, 1) if age is not None else None})
 
     # hot_rank: 昨交易日文件 + .pushed marker + 当日 cron.log FAIL 行
@@ -113,13 +114,15 @@ def build_checks(now):
     add("nas-hot_rank-log", "hot_rank 日志无 FAIL",
         "yellow" if log_fail else "green", {"fail_today": log_fail})
 
-    # vps-mirror 当日 DONE 且 fail=0(本监控挂其班尾, 查的是刚结束这班)
+    # vps-mirror 完成度: >=17:00 查当日 DONE fail=0; 班前(16:00 未到)查昨日
+    # (09-26 实证: 早班查当日必空=假黄)
+    want_day = now.strftime("%Y-%m-%d") if now.hour >= 17 else \
+        (now - dt.timedelta(days=1)).strftime("%Y-%m-%d")
     mirror_ok = False
     try:
         with open(os.path.join(MIRROR_DIR, "push.log"), encoding="utf-8",
                   errors="replace") as fh:
-            lines = [l for l in fh.read().splitlines()
-                     if now.strftime("%Y-%m-%d") in l]
+            lines = [l for l in fh.read().splitlines() if want_day in l]
         mirror_ok = any("vps-mirror DONE" in l and "fail=0" in l
                         for l in lines[-20:])
     except OSError: