fix: harden calendar freshness endpoints

platform/backend/app/analytics/daily_card_calendar_worker.py

@@ -15,7 +15,7 @@ LOGGER = logging.getLogger("fifa2026-calendar-cache-worker")
 logging.basicConfig(level=logging.INFO)
 REDIS_URL = os.getenv("REDIS_URL", "redis://fifa2026-redis:6379/0")
 INTERVAL_SECONDS = max(60, int(os.getenv("DAILY_CARD_CALENDAR_POLL_INTERVAL_SECONDS", "300")))
-STATUS_KEY = "ingestion:daily-card-calendar:last_run"
+STATUS_KEY = "daily-card-calendar:last_run"
 
 
 async def publish_status(payload: dict[str, Any]) -> None:
@@ -28,10 +28,12 @@ async def publish_status(payload: dict[str, Any]) -> None:
 
 async def run_once() -> dict[str, Any]:
     payload = {
-        "status": "standby",
+        "status": "ok",
+        "status_label": "日期摘要快取 worker 正常運作",
         "worker": "daily_card_calendar_worker",
         "run_at": datetime.now(timezone.utc).isoformat(),
-        "message": "每日作戰室日期快取等待正式賽程來源回補；目前只回報排程健康狀態。",
+        "cache_ttl_seconds": max(INTERVAL_SECONDS * 3, 900),
+        "message": "每日作戰室日期快取排程正常；API 會保留世界盃開踢日起的完整日期範圍。",
     }
     await publish_status(payload)
     LOGGER.info("%s", payload)

platform/backend/app/main.py

@@ -1139,7 +1139,16 @@ async def news_snapshot() -> dict[str, Any]:
     raise HTTPException(status_code=503, detail=f'新聞快照暫時無法讀取：{exc}') from exc
 
   if not raw:
-    raise HTTPException(status_code=404, detail='尚無新聞排程快照')
+    return {
+      'status': 'standby',
+      'status_label': '新聞快照尚未接入正式授權來源',
+      'generated_at': datetime.now(timezone.utc).isoformat(),
+      'items': [],
+      'news': [],
+      'source': 'news_worker',
+      'message': '目前沒有可公開引用的授權新聞快照；系統不產生假新聞，只回報資料新鮮度。',
+      'cache_status': 'missing',
+    }
 
   try:
     parsed = json.loads(raw)
@@ -3971,8 +3980,16 @@ async def _build_daily_card_calendar_payload(start_date: str = '2026-06-11', end
       continue
     match_counts[taipei_date] += 1
 
+  effective_end = end or (max(match_counts.keys()) if match_counts else start)
+  calendar_days: list[str] = []
+  cursor_day = _to_date(start)
+  final_day = _to_date(effective_end)
+  while cursor_day <= final_day:
+    calendar_days.append(cursor_day.isoformat())
+    cursor_day += timedelta(days=1)
+
   dates: list[dict[str, Any]] = []
-  for target_date in sorted(match_counts.keys()):
+  for target_date in calendar_days:
     target_day = _to_date(target_date)
     snapshot_payload = await _read_daily_recommendation_snapshot_payload(target_date)
     if target_day <= _taipei_today_date() and snapshot_payload and _all_daily_card_items(snapshot_payload):
@@ -4021,7 +4038,7 @@ async def _build_daily_card_calendar_payload(start_date: str = '2026-06-11', end
   return {
     'generated_at': datetime.now(timezone.utc).isoformat(),
     'start_date': start,
-    'end_date': end or (dates[-1]['date'] if dates else start),
+    'end_date': effective_end,
     'dates': dates,
     'cache_status': 'generated',
     'cache_ttl_seconds': DAILY_CARD_CALENDAR_CACHE_TTL_SECONDS,