[PC-000] CI/CD 캐싱 개선 및 기능 추가

[comst19]

1. ⭐️ 변경된 내용

• CI Gradle 캐싱 구조 정리
• CD 파이프라인 캐싱 설정 수정
• 캐시 전체 삭제용 Cache Clean 워크플로우 추가

2. 🖼️ 스크린샷(선택)

3. 💡 알게된 부분

• Gradle 캐시 설정에 따라 빌드 산출물이 재사용될 수 있음

4. 📌 이 부분은 꼭 봐주세요!

• 캐시 관련 이슈 발생 시 Cache Clean 워크플로우 실행

Summary by CodeRabbit

• Chores
  • Optimized build pipeline with improved Gradle configuration for faster, more reliable builds.
  • Implemented cache cleanup workflow for improved CI/CD infrastructure maintenance.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

📝 Walkthrough

Walkthrough

Three GitHub Actions workflows updated: Gradle cache management replaced with dedicated Setup Gradle action across CI and CD pipelines, Gradle commands now run with --no-daemon flag, QA and Release deployment logic updated with conditional targeting, and new cache cleanup workflow introduced.

Changes

Cohort / File(s)	Summary
Gradle Setup & Daemon Changes \.github/workflows/android_ci.yml, \.github/workflows/android_cd.yml	Replaced explicit Gradle cache blocks with gradle/actions/setup-gradle@v4 action. Added generate-job-summary: true. Updated build steps (assembleDebug, ktlintcheck, test, assembleqa, bundleRelease) to run with --no-daemon flag.
Deployment Conditional Logic \.github/workflows/android_cd.yml	Added QA and Release deployment sections with environment-based conditions. Updated Build QA APK and Build Release Bundle steps to reference github.event.inputs.target for conditional execution.
Cache Management \.github/workflows/cache-clean.yml	New workflow file triggered on workflow_dispatch. Installs gh-actions-cache extension, lists up to 100 cache keys, and deletes each identified cache.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~22 minutes

Possibly related PRs

• [PC-1494] cd 수정 (qa, release 브랜치 작업 구분) #184: Modifies .github/workflows/android_cd.yml with similar QA vs. Release branch workflow logic and workflow_dispatch target conditions.

Suggested labels

머지 해도될듯염🌟

Suggested reviewers

• kkh725
• tgyuuAn

Poem

🐰 A rabbit hops through workflows bright,
Gradle caches cleaned with all its might,
No daemons dance, just actions pure,
QA and Release paths sure,
Workflows streamlined—oh, what a sight! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the main changes: CI/CD caching improvements and new functionality. It accurately reflects the modifications to Gradle caching in CI/CD workflows and the addition of a new Cache Clean workflow.
Description check	✅ Passed	The description follows the required template with all four sections completed. Section 1 lists the specific changes, Section 3 provides a learning point about Gradle caching, and Section 4 includes implementation notes about using the Cache Clean workflow.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

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[comst19]

@CodeRabbit 리뷰해줘

[coderabbitai]

@comst19, PR을 리뷰하겠습니다.

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