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>

internal/graph/schema.resolvers.go

@@ -528,7 +528,7 @@ func (r *queryResolver) JobMetrics(ctx context.Context, id string, metrics []str
 	}
 
 	res := []*model.JobMetricWithName{}
-	for name, md := range data {
+	for name, md := range data.Metrics {
 		for scope, metric := range md {
 			res = append(res, &model.JobMetricWithName{
 				Name:   name,
@@ -581,7 +581,7 @@ func (r *queryResolver) ScopedJobStats(ctx context.Context, id string, metrics [
 	}
 
 	res := make([]*model.NamedStatsWithScope, 0)
-	for name, scoped := range data {
+	for name, scoped := range data.Metrics {
 		for scope, stats := range scoped {
 
 			mdlStats := make([]*model.ScopedStats, 0)
@@ -939,7 +939,7 @@ func (r *queryResolver) NodeMetricsList(ctx context.Context, cluster string, sub
 			cclog.Warnf("error in nodeMetrics resolver: %s", err)
 		}
 
-		for metric, scopedMetrics := range data[hostname] {
+		for metric, scopedMetrics := range data[hostname].Metrics {
 			for scope, scopedMetric := range scopedMetrics {
 				host.Metrics = append(host.Metrics, &model.JobMetricWithName{
 					Name:   metric,