Initial MVP for QA asset backend

hy_qa_asset_backend/backend/app/utils/time_utils.py

@@ -0,0 +1,20 @@
+from datetime import datetime, timezone
+
+
+def utc_now() -> datetime:
+    return datetime.now(timezone.utc)
+
+
+def split_cron(cron: str) -> dict[str, str]:
+    parts = cron.split()
+    if len(parts) != 5:
+        raise ValueError("SCHEDULE_CRON 需要使用 5 段 cron 表达式，例如 0 1 * * *")
+    minute, hour, day, month, day_of_week = parts
+    return {
+        "minute": minute,
+        "hour": hour,
+        "day": day,
+        "month": month,
+        "day_of_week": day_of_week,
+    }
+