Update gitignore and remove junk files

.gitignore

@@ -1,23 +1,38 @@
-# --- Python & Jupyter ---
+# --- OS Junk ---
+.DS_Store
+.DS_Store?
+._*
+.Trashes
+Thumbs.db
+
+# --- Python ---
 __pycache__/
 *.py[cod]
-.ipynb_checkpoints/
+*.so
+.venv
+venv/
+env/
+.env
+
+# --- Jupyter Notebooks ---
+.ipynb_checkpoints
 */.ipynb_checkpoints/*
 
-# --- Mac System Files ---
-.DS_Store
-.DS_Store?
+# --- IDEs (PyCharm / VS Code) ---
+.idea/
+.vscode/
+*.swp
 
-# --- Large Data (Important!) ---
+# --- Large Data & Models ---
+# Prevent uploading the massive dataset folder
 rvl_cdip_data/
+data/
 
-# --- Model Weights (Large Files) ---
+# Ignore local heavy model weights (unless tracked by LFS)
 *.pth
 *.pt
 *.ckpt
+*.h5
 
-# --- Environments ---
-.env
-.venv
-env/
-venv/.idea/
+# --- Exception: Keep specific small files if needed ---
+# !training_history.pth