feat(package): gitea: wire heatmap reindexing

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

package/gitea/source/services/mirror/mirror_pull.go

@@ -318,6 +318,7 @@ func SyncPullMirror(ctx context.Context, repoID int64) bool {
 	defer gitRepo.Close()
 
 	log.Trace("SyncMirrors [repo: %-v]: %d branches updated", m.Repo, len(results))
+	indexHeatmap := false
 	if len(results) > 0 {
 		if ok := checkAndUpdateEmptyRepository(ctx, m, results); !ok {
 			log.Error("SyncMirrors [repo: %-v]: checkAndUpdateEmptyRepository: %v", m.Repo, err)
@@ -330,6 +331,9 @@ func SyncPullMirror(ctx context.Context, repoID int64) bool {
 		if result.RefName.IsPull() {
 			continue
 		}
+		if result.RefName.IsBranch() && result.RefName.BranchName() == m.Repo.DefaultBranch {
+			indexHeatmap = true
+		}
 
 		// Create reference
 		if result.OldCommitID == "" {
@@ -391,6 +395,11 @@ func SyncPullMirror(ctx context.Context, repoID int64) bool {
 			NewCommitID: newCommitID,
 		}, theCommits)
 	}
+	if indexHeatmap {
+		if err := repo_service.IndexDefaultBranchHeatmapContributions(ctx, m.Repo); err != nil {
+			log.Error("SyncMirrors [repo: %-v]: failed to index heatmap contributions: %v", m.Repo, err)
+		}
+	}
 	log.Trace("SyncMirrors [repo: %-v]: done notifying updated branches/tags - now updating last commit time", m.Repo)
 
 	isEmpty, err := gitRepo.IsEmpty()