fix(priority): expose runtime readback freshness

apps/api/src/services/awoooi_priority_work_order_readback.py

@@ -812,6 +812,7 @@ def load_latest_awoooi_priority_work_order_readback(
     _enrich_from_current_readbacks(payload)
     _require_mainline_consistency(payload, str(path))
     _apply_commander_inserted_requirement_work_items(payload)
+    _mark_runtime_generated_at(payload)
     return payload
 
 
@@ -960,6 +961,8 @@ def apply_controlled_cd_lane_live_metric_readback(
             active_blockers
         )
 
+    _mark_runtime_generated_at(payload)
+
 
 def apply_stockplatform_public_api_runtime_readback(
     payload: dict[str, Any],
@@ -3329,6 +3332,27 @@ def _apply_commander_inserted_requirement_work_items(
     )
 
 
+def _mark_runtime_generated_at(payload: dict[str, Any]) -> None:
+    snapshot_generated_at = str(
+        payload.get("snapshot_generated_at") or payload.get("generated_at") or ""
+    )
+    runtime_generated_at = _taipei_now_iso()
+
+    if snapshot_generated_at:
+        payload["snapshot_generated_at"] = snapshot_generated_at
+    payload["generated_at"] = runtime_generated_at
+    payload["runtime_readback_generated_at"] = runtime_generated_at
+
+    summary = _dict(payload.setdefault("summary", {}))
+    if snapshot_generated_at:
+        summary["snapshot_generated_at"] = snapshot_generated_at
+    summary["generated_at"] = runtime_generated_at
+    summary["runtime_readback_generated_at"] = runtime_generated_at
+
+    rollups = _dict(payload.setdefault("rollups", {}))
+    rollups["runtime_readback_generated_at_present"] = True
+
+
 def _require_schema(payload: dict[str, Any], label: str) -> None:
     actual = payload.get("schema_version")
     if actual != _SCHEMA_VERSION: