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/archiver/archiver.go

@@ -65,9 +65,9 @@ func ArchiveJob(job *schema.Job, ctx context.Context) (*schema.Job, error) {
 		return nil, err
 	}
 
-	job.Statistics = make(map[string]schema.JobStatistics)
+	job.Statistics = schema.JobStatisticsSet{Metrics: make(map[string]schema.JobStatistics, len(jobData.Metrics))}
 
-	for metric, data := range jobData {
+	for metric, data := range jobData.Metrics {
 		avg, min, max := 0.0, math.MaxFloat32, -math.MaxFloat32
 		nodeData, ok := data["node"]
 		if !ok {
@@ -82,7 +82,7 @@ func ArchiveJob(job *schema.Job, ctx context.Context) (*schema.Job, error) {
 		}
 
 		// Round AVG Result to 2 Digits
-		job.Statistics[metric] = schema.JobStatistics{
+		job.Statistics.Metrics[metric] = schema.JobStatistics{
 			Unit: schema.Unit{
 				Prefix: archive.GetMetricConfig(job.Cluster, metric).Unit.Prefix,
 				Base:   archive.GetMetricConfig(job.Cluster, metric).Unit.Base,