add gitattributes and gitignore

.gitattributes

@@ -33,3 +33,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
+*.referenceobject filter=lfs diff=lfs merge=lfs -text

.gitignore

@@ -0,0 +1,31 @@
+# macOS system files
+.DS_Store
+
+# Git LFS pointer file safety (optional if using Git LFS)
+*.lfs
+
+# Thumbnails or Finder previews
+._*
+
+# Xcode project user data (if you're using Xcode in this repo)
+*.xcuserstate
+*.xcuserdata/
+
+# Backup files
+*.swp
+*.swo
+*.bak
+*~
+
+# Python cache (if using training scripts)
+__pycache__/
+*.pyc
+
+# VSCode settings (if you use it)
+.vscode/
+
+# Ignore system trash
+.Trashes
+
+# Ignore model artifacts not under version control
+*.mlmodelc