chore: Add .gitignore for build artifacts

Ignore node_modules, dist, tsbuildinfo and other common artifacts

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,41 @@
+# Dependencies
+node_modules/
+
+# Build output
+dist/
+build/
+
+# TypeScript build info
+*.tsbuildinfo
+tsconfig.tsbuildinfo
+tsconfig.node.tsbuildinfo
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Environment
+.env
+.env.local
+.env.*.local
+
+# Logs
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Testing
+coverage/
+.nyc_output/
+
+# Misc
+*.local
+.eslintcache