Add environment variable example and update .gitignore

- Created a new .env.example file to provide a template for environment variables, including database connection details, JWT settings, encryption keys, and external API keys.
- Updated .gitignore to include additional test output directories and archive files, ensuring that unnecessary files are not tracked by Git.
- Removed outdated approval test reports and scripts that are no longer needed, streamlining the project structure.

These changes improve the clarity of environment configuration and maintain a cleaner repository.

scripts/dev/start-all-parallel.bat

@@ -95,7 +95,7 @@ echo ============================================
 echo [완료] 모든 서비스가 시작되었습니다!
 echo ============================================
 echo.
-echo [DATABASE] PostgreSQL: http://39.117.244.52:11132
+echo [DATABASE] PostgreSQL: http://211.115.91.141:11134
 echo [BACKEND]  Node.js API: http://localhost:8080/api
 echo [FRONTEND] Next.js:     http://localhost:9771
 echo.

scripts/dev/start-all-parallel.ps1

@@ -150,7 +150,7 @@ Write-Host "============================================" -ForegroundColor Cyan
 Write-Host "[완료] 모든 서비스가 시작되었습니다!" -ForegroundColor Green
 Write-Host "============================================" -ForegroundColor Cyan
 Write-Host ""
-Write-Host "[DATABASE] PostgreSQL: http://39.117.244.52:11132" -ForegroundColor White
+Write-Host "[DATABASE] PostgreSQL: http://211.115.91.141:11134" -ForegroundColor White
 Write-Host "[BACKEND]  Node.js API: http://localhost:8080/api" -ForegroundColor White
 Write-Host "[FRONTEND] Next.js:     http://localhost:9771" -ForegroundColor White
 Write-Host ""

scripts/dev/start-all-parallel.sh

@@ -92,7 +92,7 @@ echo "============================================"
 echo "🎉 모든 서비스가 시작되었습니다!"
 echo "============================================"
 echo ""
-echo "[DATABASE] PostgreSQL: http://39.117.244.52:11132"
+echo "[DATABASE] PostgreSQL: http://211.115.91.141:11134"
 echo "[BACKEND]  Node.js API: http://localhost:8080/api"
 echo "[FRONTEND] Next.js:     http://localhost:9771"
 echo ""

scripts/dev/start-backend.sh

@@ -29,7 +29,7 @@ echo "============================================"
 echo "백엔드 서비스가 시작되었습니다!"
 echo "============================================"
 echo ""
-echo "[DATABASE] PostgreSQL: http://39.117.244.52:11132"
+echo "[DATABASE] PostgreSQL: http://211.115.91.141:11134"
 echo "[BACKEND]  Node.js API: http://localhost:8080/api"
 echo ""
 echo "상태 확인: docker-compose -f docker/dev/docker-compose.backend.mac.yml ps"