feat(trigger): implement subscription refresh logic with enhanced error handling and logging

api/core/trigger/utils/locks.py

@@ -0,0 +1,12 @@
+from collections.abc import Sequence
+from itertools import starmap
+
+
+def build_trigger_refresh_lock_key(tenant_id: str, subscription_id: str) -> str:
+    """Build the Redis lock key for trigger subscription refresh in-flight protection."""
+    return f"trigger_provider_refresh_lock:{tenant_id}_{subscription_id}"
+
+
+def build_trigger_refresh_lock_keys(pairs: Sequence[tuple[str, str]]) -> list[str]:
+    """Build Redis lock keys for a sequence of (tenant_id, subscription_id) pairs."""
+    return list(starmap(build_trigger_refresh_lock_key, pairs))