feat(pchome): close freshness and multi-market decision gaps

scheduler.py

@@ -94,7 +94,10 @@ def _safe_driver_title(driver, task_label, url):
 
 def _save_stats(task_name, data):
     """將任務統計結果寫入 JSON 檔案"""
-    stats_file = os.path.join(os.path.dirname(__file__), 'data', 'scheduler_stats.json')
+    stats_file = os.getenv(
+        'SCHEDULER_STATS_PATH',
+        os.path.join(os.path.dirname(__file__), 'data', 'scheduler_stats.json'),
+    )
     try:
         stats = {}
         if os.path.exists(stats_file):
@@ -2043,7 +2046,12 @@ def run_auto_import_task():
             stats = {
                 "file_count": result.get('file_count', 0),
                 "imported_count": result.get('imported_count', 0),
-                "status": "Success"
+                "status": "Degraded" if result.get('status') in {'upstream_stale', 'upstream_missing'} else "Success",
+                "upstream_status": result.get('status'),
+                "latest_sales_date": result.get('latest_sales_date'),
+                "data_lag_days": result.get('data_lag_days'),
+                "decision_ready": result.get('decision_ready'),
+                "requires_upstream_acquisition": result.get('requires_upstream_acquisition', False),
             }
 
             # V-New: 發送 Telegram 和 Line 通知（僅當有匯入新檔案時）