[G1-Sync] Manual knowledge update

10_Wiki/Topics/Programming & Language/Continuous Integration (CI).md

@@ -1,25 +1,142 @@
 ---
 id: wiki-20260508-continuous-integration-ci--redir
 title: Continuous Integration (CI)
-category: Programming & Language
-status: merged
-redirect_to: Continuous_Integration_CI
-canonical_id: Continuous_Integration_CI
-aliases: []
+category: 10_Wiki/Topics
+status: verified
+canonical_id: self
+aliases: [CI, Continuous Integration, 지속적 통합]
 duplicate_of: none
 source_trust_level: A
 confidence_score: 0.92
-tags: [redirect]
+verification_status: applied
+tags: [cicd, devops, automation, testing]
 raw_sources: []
-last_reinforced: 2026-05-08
+last_reinforced: 2026-05-10
 github_commit: pending
-inferred_by: Claude Opus 4.7 (auto-merge 2026-05-08)
+tech_stack:
+  language: yaml
+  framework: GitHub Actions, GitLab CI, Jenkins
 ---
 
 # Continuous Integration (CI)
 
-> [!IMPORTANT]
-> 이 문서는 P-Reinforce Phase 2 자동 MERGE에 의해 **[[Continuous_Integration_CI]]**로 통합되었습니다.
+## 매 한 줄
+> **"매 every commit 의 main branch 의 automated build + test"**. 매 Grady Booch (1991) 의 coin → Martin Fowler (2000) 의 popularize → 매 2026 의 trunk-based dev + GitHub Actions 의 dominant practice. 매 integration hell 의 prevent — 매 small frequent merge + fast feedback (<10 min).
 
----
-*Redirected to: [[Continuous_Integration_CI]]*
+## 매 핵심
+
+### 매 Practices
+- **Single source repo** (trunk-based, optionally short-lived feature branches).
+- **Automated build** on every push.
+- **Self-testing build** (unit + integration).
+- **Daily commit** to main (최소).
+- **Build fast** (<10 min target).
+- **Test in clone of prod** (Docker, ephemeral env).
+- **Visible status** (badge, Slack notify).
+- **Fix red main immediately** (revert > forward fix).
+
+### 매 CI vs CD
+- **CI**: build + test on every push — main 의 always green.
+- **CD (Delivery)**: 매 always-shippable artifact + manual prod gate.
+- **CD (Deployment)**: 매 fully automated to prod.
+
+### 매 응용
+1. Pre-merge: PR check (lint, test, type, build).
+2. Post-merge: artifact build + push.
+3. Nightly: e2e, perf, security scan.
+4. Release: tag → publish (npm, container).
+
+## 💻 패턴
+
+### GitHub Actions PR check
+```yaml
+name: pr
+on: { pull_request: { branches: [main] } }
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v3
+      - uses: actions/setup-node@v4
+        with: { node-version: 20, cache: pnpm }
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm lint
+      - run: pnpm typecheck
+      - run: pnpm test --coverage
+      - run: pnpm build
+      - uses: codecov/codecov-action@v4
+```
+
+### Branch protection (main)
+```yaml
+# .github/branch-protection.yml (or via API)
+required_status_checks:
+  strict: true
+  contexts: [ci/lint, ci/test, ci/build]
+required_pull_request_reviews: { required_approving_review_count: 1 }
+enforce_admins: true
+```
+
+### Parallel matrix
+```yaml
+jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        node: [18, 20, 22]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+```
+
+### Cache
+```yaml
+- uses: actions/cache@v4
+  with:
+    path: ~/.pnpm-store
+    key: pnpm-${{ runner.os }}-${{ hashFiles('pnpm-lock.yaml') }}
+```
+
+### Pre-commit (Husky + lint-staged)
+```json
+{ "lint-staged": { "*.{ts,tsx}": ["eslint --fix", "prettier --write"] } }
+```
+
+## 매 결정 기준
+| 상황 | Approach |
+|---|---|
+| GitHub repo | GitHub Actions |
+| GitLab self-host | GitLab CI |
+| Java enterprise | Jenkins (with Jenkinsfile) |
+| Monorepo, perf-critical | Nx Cloud / Turborepo Remote Cache |
+| OSS multi-platform | GitHub Actions + matrix |
+
+**기본값**: 매 GitHub Actions + branch protection + required check.
+
+## 🔗 Graph
+- 부모: [[CI/CD Pipeline]] · [[DevOps]]
+- 변형: [[Continuous Delivery]] · [[Continuous Deployment]]
+- 응용: [[Trunk-Based Development]] · [[Pull Request Workflow]]
+- Adjacent: [[TeamCity]] · [[Jenkins]] · [[GitOps]] · [[Pre-commit Hook]]
+
+## 🤖 LLM 활용
+**언제**: 매 workflow YAML 의 generation, action 의 lookup, matrix 의 expansion.
+**언제 X**: 매 secret handling — 매 OIDC + GitHub Secrets manual review.
+
+## ❌ 안티패턴
+- **Long-lived feature branch**: 매 merge hell — 매 short-lived (<3 day).
+- **Skipping tests** (`[skip ci]` 의 abuse): 매 main 의 break.
+- **Slow CI** (>15 min): 매 PR backlog — 매 cache + parallelize.
+- **Flaky tests** 의 retry abuse: 매 fix 의 root cause.
+- **Manual deploy from laptop**: 매 reproducibility 의 zero — 매 CI 의 only.
+
+## 🧪 검증 / 중복
+- Verified (Fowler "Continuous Integration", GitHub Actions docs).
+- 신뢰도 A.
+
+## 🕓 Changelog
+| 날짜 | 변경 |
+|---|---|
+| 2026-05-08 | Phase 1 |
+| 2026-05-10 | Manual cleanup — practices + Actions/branch protection patterns |