Cleanup and handle error in AppTagger

cmd/cc-backend/main.go

@@ -279,8 +279,6 @@ func initSubsystems() error {
 		return fmt.Errorf("initializing archive: %w", err)
 	}
 
-	// Note: metricstore.Init() is called later in runServer() with proper configuration
-
 	// Handle database re-initialization
 	if flagReinitDB {
 		if err := importer.InitDB(); err != nil {

internal/tagger/detectApp.go

@@ -174,7 +174,9 @@ func (t *AppTagger) Match(job *schema.Job) {
 			for _, re := range a.patterns {
 				if re.MatchString(jobscriptLower) {
 					if !r.HasTag(id, t.tagType, a.tag) {
-						r.AddTagOrCreateDirect(id, t.tagType, a.tag)
+						if _, err := r.AddTagOrCreateDirect(id, t.tagType, a.tag); err != nil {
+							cclog.Errorf("AppTagger: failed to add tag '%s' to job %d: %v", a.tag, id, err)
+						}
 					}
 					break out
 				}