Add CI/CD and CODEBASE_SETUP for Community (Armor)

[nv78]

Summary

• Adds .github/workflows/ci.yml — runs npm ci --legacy-peer-deps and npm run build on every PR and push to main
• Adds .github/workflows/deploy.yml — manual workflow to build and deploy the React app to S3 + CloudFront (supports production and staging environments)
• Adds CODEBASE_SETUP.md — developer onboarding guide covering prerequisites, quick start, environment variables, production build, and CI/CD instructions
• Adds .gitignore for Node artifacts (node_modules/, build/, .env, .DS_Store)

Test plan

• Verify CI workflow triggers on a test PR and the build step completes successfully
• Confirm required GitHub Actions secrets (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, S3_BUCKET_FRONTEND, CLOUDFRONT_DISTRIBUTION_ID, REACT_APP_BACK_END_HOST, REACT_APP_FRONT_END_HOST) are configured in the repo settings before running Deploy
• Trigger the Deploy workflow manually from Actions UI and confirm S3 sync + CloudFront invalidation succeed
• Review CODEBASE_SETUP.md for accuracy against the actual frontend setup

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Generated by Claude Code

[nv78]

✅ Ready to merge

CI status: All checks passing (Frontend — Lint & Build: success)

What's in this PR:

• .github/workflows/ci.yml — frontend lint + build on every PR and push to main. PRs that break the build will be blocked.
• .github/workflows/deploy.yml — manual S3+CloudFront deploy. Triggered via GitHub Actions → "Run workflow".
• CODEBASE_SETUP.md — onboarding guide for the Community (Armor) frontend.
• .gitignore — added Node/build artifacts.

Before merging, confirm:

• GitHub Secrets are set: AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION, S3_BUCKET_FRONTEND, CLOUDFRONT_DISTRIBUTION_ID, REACT_APP_BACK_END_HOST, REACT_APP_FRONT_END_HOST

This is a frontend-only repo so no ECS/backend secrets needed. Safe to merge now.

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Generated by Claude Code