feat: sync live-count, exemplar annotation modules, and update .gitignore

.gitignore

@@ -73,6 +73,11 @@ weights/
 *.sqlite
 *.sqlite3
 
+# Asset exceptions
+!backend/assets/
+!backend/assets/**
+
+
 # Training Logs & Caches
 *.log
 *.tfevents*