initial commit: add .gitignore

.gitignore

@@ -0,0 +1,39 @@
+# Dependencies
+node_modules/
+.expo/
+dist/
+build/
+
+# Python cache
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.pytest_cache/
+.venv/
+venv/
+env/
+
+# Database & Credentials
+*.db
+*.db-journal
+.env
+.env.*
+secrets.json
+
+# IDEs and Editors
+.vscode/
+.idea/
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Temporary directories
+temp_git/
+scratch/