feat: AtchaV2 Phase 5 — SearchFeature 신규 (장소 검색 + 막차 결과 + 경로 선택 반환) - #343

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/