fix(agents): treat legacy mcp partial readback as auxiliary

apps/api/src/services/ai_agent_autonomous_runtime_control.py

@@ -59,6 +59,7 @@ _AUXILIARY_RUNTIME_RECEIPT_QUERY_NAMES = {
     "alertmanager_event_counts",
     "grouped_alert_event_counts",
     "db_context_exit",
+    "legacy_mcp_counts",
 }
 _CONSUMER_RECEIPT_FALLBACK_ERROR_TYPES = {
     "RuntimeReceiptDbContextTimeout",

apps/api/tests/test_ai_agent_autonomous_runtime_control.py

@@ -1675,6 +1675,7 @@ def test_runtime_receipt_auxiliary_alert_query_partial_does_not_block_runtime_tr
             {"status": "sent", "total": 3, "recent": 1},
         ],
         partial_query_failures=[
+            {"query_name": "legacy_mcp_counts", "error_type": "DBAPIError"},
             {"query_name": "alert_operation_counts", "error_type": "DBAPIError"},
             {
                 "query_name": "alertmanager_event_counts",