Merge branch 'feat/565-add-metric-tooltip' into metric-store-tickets

Resolve conflicts in the generated GraphQL code by regenerating it against
the merged schema. cc-lib v2.13.0 adds Tooltip to schema.MetricConfig and
schema.GlobalMetricListItem, so gqlgen now binds the tooltip field directly
and the hand-written globalMetricListItem/metricConfig resolvers introduced
on the tooltip branch are no longer needed.

Also migrate to the cc-lib v2.13.0 metric container types, which changed
from bare maps to structs carrying array-valued metric groups:

  schema.JobData          map -> {Metrics, Groups}
  schema.ScopedJobStats   map -> {Metrics, Groups}
  job.Statistics          map -> schema.JobStatisticsSet{Metrics, Groups}

Callers index .Metrics, return the zero struct instead of nil, and
deepCopy/DecodeJobStats now also carry the Groups payload through.
archive.GetStatistics returns the full JobStatisticsSet so group
statistics survive the round trip.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

tools/archive-manager/import_test.go

@@ -231,9 +231,9 @@ func TestImportDataIntegrity(t *testing.T) {
 		}
 
 		// Verify metric data exists
-		if len(srcData) != len(dstData) {
+		if len(srcData.Metrics) != len(dstData.Metrics) {
 			t.Errorf("Metric count mismatch for job %d: expected %d, got %d",
-				srcJob.Meta.JobID, len(srcData), len(dstData))
+				srcJob.Meta.JobID, len(srcData.Metrics), len(dstData.Metrics))
 		}
 
 		verifiedJobs++