Remove binary model files - will be generated at runtime or loaded from HF Hub

.gitignore

@@ -39,7 +39,9 @@ problem3/
 *.tmp
 *.log
 
-# Model files (optional - include if you want to deploy with models)
-# Uncomment the line below if you DON'T want to include trained models
-# models/
+# Model files (binary files not allowed in HF Spaces git - use XET or generate at runtime)
+models/*.pkl
+models/*.json
+# Keep models directory but exclude contents
+!models/.gitkeep