feat: Add CI/CD pipeline and code quality improvements

- Add GitHub Actions workflow for automated CI/CD
- Configure Node.js 18.x and 20.x matrix testing
- Add TypeScript type checking step
- Add ESLint code quality checks with enhanced rules
- Add Prettier formatting verification
- Add production build validation
- Upload build artifacts for deployment
- Set up automated testing on push/PR
- Replace console.log with environment-aware logger
- Add pre-commit hooks for code quality
- Exclude archive folder from linting

🤖 Generated with [Claude Code](https://claude.ai/code)

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

.env.production

@@ -0,0 +1,13 @@
+# 프로덕션 환경 설정
+# 민감한 정보는 서버 환경에서 설정하고 클라이언트에 노출하지 않음
+
+# Appwrite 관련 설정 (프로덕션)
+VITE_APPWRITE_ENDPOINT=https://a11.ism.kr/v1
+VITE_APPWRITE_PROJECT_ID=68182a300039f6d700a6
+VITE_APPWRITE_DATABASE_ID=default
+VITE_APPWRITE_TRANSACTIONS_COLLECTION_ID=transactions
+
+VITE_DISABLE_LOVABLE_BANNER=true
+
+# 주의: API 키는 프로덕션에서 서버 환경 변수로 관리
+# 클라이언트에 노출되어서는 안되는 민감한 정보들은 제외됨