---
id: T01
parent: S06
milestone: M006
provides: []
requires: []
affects: []
key_files: ["frontend/src/components/AppFooter.tsx", "frontend/vite.config.ts", "frontend/src/App.tsx", "frontend/src/App.css", "frontend/src/vite-env.d.ts"]
key_decisions: ["Used execSync for local git SHA with VITE_GIT_COMMIT env var fallback for Docker builds", "Read package.json version via fs.readFileSync to avoid TS module resolution issues in Vite config"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "Ran npm run build — Vite built successfully (48 modules, 781ms). Verified built JS bundle contains substituted values: version "0.1.0", date 2026-03-30T, and GitHub repo URL. All grep and file-existence checks pass."
completed_at: 2026-03-30T12:00:55.584Z
blocker_discovered: false
---

# T01: Added AppFooter component displaying app version, build date, commit SHA, and GitHub link — wired through Vite define constants with Docker-compatible env fallback

> Added AppFooter component displaying app version, build date, commit SHA, and GitHub link — wired through Vite define constants with Docker-compatible env fallback

## What Happened
---
id: T01
parent: S06
milestone: M006
key_files:
  - frontend/src/components/AppFooter.tsx
  - frontend/vite.config.ts
  - frontend/src/App.tsx
  - frontend/src/App.css
  - frontend/src/vite-env.d.ts
key_decisions:
  - Used execSync for local git SHA with VITE_GIT_COMMIT env var fallback for Docker builds
  - Read package.json version via fs.readFileSync to avoid TS module resolution issues in Vite config
duration: ""
verification_result: passed
completed_at: 2026-03-30T12:00:55.585Z
blocker_discovered: false
---

# T01: Added AppFooter component displaying app version, build date, commit SHA, and GitHub link — wired through Vite define constants with Docker-compatible env fallback

**Added AppFooter component displaying app version, build date, commit SHA, and GitHub link — wired through Vite define constants with Docker-compatible env fallback**

## What Happened

Updated vite.config.ts with a define block injecting three build-time constants (__APP_VERSION__, __BUILD_DATE__, __GIT_COMMIT__) using JSON.stringify wrapping. Created AppFooter.tsx component rendering version, build date, commit link, and repo link. Updated App.tsx to render the footer and App.css with flex column layout to push footer to bottom.

## Verification

Ran npm run build — Vite built successfully (48 modules, 781ms). Verified built JS bundle contains substituted values: version "0.1.0", date 2026-03-30T, and GitHub repo URL. All grep and file-existence checks pass.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `cd frontend && npm run build` | 0 | ✅ pass | 781ms |
| 2 | `grep -q '__APP_VERSION__' vite.config.ts` | 0 | ✅ pass | 10ms |
| 3 | `grep -q 'AppFooter' src/App.tsx` | 0 | ✅ pass | 10ms |
| 4 | `test -f src/components/AppFooter.tsx` | 0 | ✅ pass | 10ms |


## Deviations

None.

## Known Issues

None.

## Files Created/Modified

- `frontend/src/components/AppFooter.tsx`
- `frontend/vite.config.ts`
- `frontend/src/App.tsx`
- `frontend/src/App.css`
- `frontend/src/vite-env.d.ts`


## Deviations
None.

## Known Issues
None.
