monitoring(testing): keep quality rollups current

scripts/tests/test_monitoring_query_capacity.py

@@ -154,13 +154,14 @@ def test_daily_availability_backfill_stays_below_query_timeout() -> None:
 
 
 def test_quality_rollups_do_not_run_every_minute() -> None:
-    """Keep high-cardinality quality rollups below the backend saturation cadence."""
+    """Keep quality rollups cheap while avoiding instant-query staleness gaps."""
     manifest = _documents(
         REPO_ROOT / "services/monitoring/vmalert-atlas-availability.yaml"
     )[0]
     quality = yaml.safe_load(manifest["data"]["platform-quality.yaml"])["groups"][0]
 
-    assert quality["interval"] == "5m"
+    assert quality["interval"] == "4m"
+    assert quality["eval_offset"] == "1m"
 
 
 def test_vmalert_reloads_updated_rule_files() -> None:

services/monitoring/vmalert-atlas-availability.yaml

@@ -99,7 +99,10 @@ data:
   platform-quality.yaml: |
     groups:
       - name: platform.quality
-        interval: 5m
+        # Stay inside the five-minute instant-query lookback, including the
+        # group's evaluation and remote-write time.
+        interval: 4m
+        eval_offset: 1m
         rules:
           - record: platform_quality:test_case_status:count_1h
             expr: |