fix: m11_lib query uses result=accepted not result=ok

scripts/m11_lib.py

@@ -37,10 +37,10 @@ def assert_grpc_rate_near(target: float, tolerance: float = 0.10,
     tolerance: fraction (0.10 = ±10%)
     Returns the actual rate, or raises AssertionError.
 
-    Query: sum(rate(ba_ingestd_alerts_received_total{transport="grpc",result="ok"}[window]))
+    Query: sum(rate(ba_ingestd_alerts_received_total{transport="grpc",result="accepted"}[window]))
     """
     query = (
-        f'sum(rate(ba_ingestd_alerts_received_total{{transport="grpc",result="ok"}}[{window_seconds}s]))'
+        f'sum(rate(ba_ingestd_alerts_received_total{{transport="grpc",result="accepted"}}[{window_seconds}s]))'
     )
     results = scrape(query)
     if not results: