📝 Add comprehensive .gitignore

✨ Features:
- Node.js dependencies excluded
- Environment variables protected
- IDE and OS files ignored
- Test and temporary files excluded
- Professional repository hygiene

🛡️ Secure and clean repository setup

.gitignore

@@ -0,0 +1,35 @@
+# Dependencies
+node_modules/
+dist/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Environment variables
+.env
+.env.local
+.env.production
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Test files
+test-*.js
+quick-test.js
+parallel-test.js
+*TEST*.json
+*REPORT*.json
+
+# Temporary files
+temp/
+tmp/
+*.tmp