[FEAT/#129] Firebase Crashlytics 설정

[vahkjsdf]

Related issue 🛠

• closed [FEAT] Firebase Crashlytics 설정 #129

Work Description ✏️

• firebase crashlytics 연동
  • debug 빌드는 수집 X, release 빌드만 수집
• firebase analytics 자동 수집 활성화
  • 사용자 수, 리텐션, 기기/OS, Activity 단위 screen_view 등 자동 수집 이벤트만 수집

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📝 Walkthrough

Walkthrough

Firebase Crashlytics 플러그인과 라이브러리를 Gradle 설정에 추가했습니다. 매니페스트에 Crashlytics 수집 설정을 연결하고, debug와 release 빌드에서 수집 여부를 지정했습니다. Analytics 수집도 활성화했습니다.

Changes

Crashlytics 설정

Layer / File(s)	Summary
Gradle 연결 gradle/libs.versions.toml, build.gradle.kts, app/build.gradle.kts	버전 카탈로그에 Crashlytics 플러그인과 라이브러리를 등록하고, 최상위 및 앱 모듈에 연결했습니다.
빌드 유형별 수집 설정 app/build.gradle.kts, app/src/main/AndroidManifest.xml	debug 빌드에서는 Crashlytics 수집을 비활성화하고 release 빌드에서는 활성화하도록 설정했습니다. 매니페스트에서 Analytics 수집을 활성화하고 Crashlytics 수집 값을 플레이스홀더로 지정했습니다.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Feature

Merge Risk: 🔵 Low · up to c52c2

The Crashlytics SDK is included in debug builds despite collection being disabled there. This is a small, debug-artifact-only configuration issue; move the dependency to releaseImplementation.

Security Architecture Review

Security architecture risk: 🟡 Moderate · up to c52c2

Crashlytics is restricted to release builds, but Analytics changes from disabled to enabled for every build. This broadens default external telemetry collection. The relationship to consent, report contents, and collection behavior during upgrades or rollback remains unverified.

Retained concerns

• Medium · security · observed: The existing Analytics-disabled default is removed for every build variant, independently of the release-only Crashlytics collection policy. Inspected startup and logout paths do not apply a telemetry collection gate. This expands configured external collection beyond release crash reporting; a consent violation or sensitive-data disclosure has not been established.

Security review details

Security Blast Radius

• inferred — The configured collection expansion is app-wide rather than limited to an authenticated feature: Analytics is enabled in the shared manifest, and release Crashlytics has no sign-in condition in its build policy. Effective payload contents, identity linkage, and backend access scope remain unverified.

Trust Boundaries and Controls

• observed — Device-token registration waits for sign-in, and logout attempts device-token deletion before authentication cleanup. Signup sends privacy and marketing agreement fields. None of these inspected paths changes Analytics or Crashlytics collection, so they do not establish a telemetry enforcement boundary.

Hardening Proposals

• proposed — Define separate Analytics and Crashlytics collection policies, including intended debug behavior and any consent requirements. Validate effective variant manifests and SDK behavior across restart, upgrade, withdrawal, queued uploads, and rollback before treating the policy as lifecycle-enforced.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	직접 연결된 이슈 #129는 Firebase Crashlytics 설정을 요구합니다. PR은 Crashlytics Gradle 플러그인과 라이브러리를 등록하고, 앱 모듈에 플러그인과 의존성을 추가합니다. AndroidManifest.xml은 ${crashlyticsCollectionEnabled}를 사용하며, app/build.gradle.kts…
Out of Scope Changes check	✅ Passed	변경 사항은 #129의 Firebase Crashlytics 설정과 직접 연결됩니다. Crashlytics 플러그인, 라이브러리, 빌드별 수집 설정, 매니페스트 메타데이터, Firebase Analytics 수집 활성화만 변경되었습니다. 검토된 요약에서 관련 없는 변경은 확인되지 않습니다.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2…
Title check	✅ Passed	제목이 Firebase Crashlytics 설정이라는 주요 변경 사항을 명확하게 설명하며, 관련 이슈 번호와 작업 유형도 포함합니다.
Description check	✅ Passed	관련 이슈, 작업 내용, 스크린샷, 미완료 작업 섹션을 모두 포함합니다. Crashlytics 수집 범위와 Analytics 자동 수집 활성화 내용도 설명합니다.

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Actionable comments posted: 1

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• 🪄 Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at @app/build.gradle.kts:
- Line 119: In the dependency block, change the Firebase Crashlytics dependency
from implementation to releaseImplementation so it is included only in the
release variant.

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📥 Commits

Reviewing files that changed from the base of the PR and between 7849073 and c52c2fa.

📒 Files selected for processing (4)

• app/build.gradle.kts
• app/src/main/AndroidManifest.xml
• build.gradle.kts
• gradle/libs.versions.toml

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