---
id: T02
parent: S04
milestone: M001
provides: []
requires: []
affects: []
key_files: ["frontend/package.json", "frontend/vite.config.ts", "frontend/tsconfig.json", "frontend/tsconfig.app.json", "frontend/index.html", "frontend/src/main.tsx", "frontend/src/App.tsx", "frontend/src/App.css", "frontend/src/api/client.ts", "frontend/src/pages/ReviewQueue.tsx", "frontend/src/pages/MomentDetail.tsx", "frontend/src/vite-env.d.ts"]
key_decisions: ["API client uses bare fetch() with a shared request() helper — no external HTTP library needed", "ReviewQueue page fetches data on mount with useEffect + Promise.all for queue and stats in parallel"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "npm run build succeeds producing dist/index.html. npx tsc --noEmit passes with zero TypeScript errors. API client exports all key functions verified by grep. All 3 slice-level checks pass: test_review.py 24/24, full suite 40/40, route count = 9."
completed_at: 2026-03-29T23:21:39.477Z
blocker_discovered: false
---

# T02: Bootstrapped React + Vite + TypeScript frontend with typed API client for all 9 review endpoints, React Router shell, and admin CSS foundation

> Bootstrapped React + Vite + TypeScript frontend with typed API client for all 9 review endpoints, React Router shell, and admin CSS foundation

## What Happened
---
id: T02
parent: S04
milestone: M001
key_files:
  - frontend/package.json
  - frontend/vite.config.ts
  - frontend/tsconfig.json
  - frontend/tsconfig.app.json
  - frontend/index.html
  - frontend/src/main.tsx
  - frontend/src/App.tsx
  - frontend/src/App.css
  - frontend/src/api/client.ts
  - frontend/src/pages/ReviewQueue.tsx
  - frontend/src/pages/MomentDetail.tsx
  - frontend/src/vite-env.d.ts
key_decisions:
  - API client uses bare fetch() with a shared request() helper — no external HTTP library needed
  - ReviewQueue page fetches data on mount with useEffect + Promise.all for queue and stats in parallel
duration: ""
verification_result: passed
completed_at: 2026-03-29T23:21:39.478Z
blocker_discovered: false
---

# T02: Bootstrapped React + Vite + TypeScript frontend with typed API client for all 9 review endpoints, React Router shell, and admin CSS foundation

**Bootstrapped React + Vite + TypeScript frontend with typed API client for all 9 review endpoints, React Router shell, and admin CSS foundation**

## What Happened

Replaced the placeholder frontend with a full React 18 + Vite 6 + TypeScript 5.6 application. Created package.json with react, react-dom, react-router-dom dependencies plus Vite/TypeScript tooling. Added vite.config.ts with React plugin and /api dev proxy to localhost:8001. Set up strict TypeScript config targeting ES2020 with bundler module resolution. Built the app shell with BrowserRouter routes (/admin/review → ReviewQueue, /admin/review/:momentId → MomentDetail, * → redirect). Created src/api/client.ts — a fully typed API client with TypeScript interfaces matching all backend Pydantic schemas and 9 exported functions (fetchQueue, fetchStats, approveMoment, rejectMoment, editMoment, splitMoment, mergeMoments, getReviewMode, setReviewMode). ReviewQueue page fetches real data on mount with loading/error states.

## Verification

npm run build succeeds producing dist/index.html. npx tsc --noEmit passes with zero TypeScript errors. API client exports all key functions verified by grep. All 3 slice-level checks pass: test_review.py 24/24, full suite 40/40, route count = 9.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `cd frontend && npm run build && test -f dist/index.html` | 0 | ✅ pass | 2700ms |
| 2 | `cd frontend && npx tsc --noEmit` | 0 | ✅ pass | 1000ms |
| 3 | `grep -q 'fetchQueue|approveMoment|getReviewMode' frontend/src/api/client.ts` | 0 | ✅ pass | 10ms |
| 4 | `cd backend && python -m pytest tests/test_review.py -v` | 0 | ✅ pass | 11220ms |
| 5 | `cd backend && python -m pytest tests/ -v` | 0 | ✅ pass | 133380ms |
| 6 | `cd backend && python -c 'from routers.review import router; print(len(router.routes))'` | 0 | ✅ pass | 500ms |


## Deviations

Added src/vite-env.d.ts for Vite type declarations (required for TypeScript). ReviewQueue page fetches real data with loading/error states instead of bare placeholder text.

## Known Issues

None.

## Files Created/Modified

- `frontend/package.json`
- `frontend/vite.config.ts`
- `frontend/tsconfig.json`
- `frontend/tsconfig.app.json`
- `frontend/index.html`
- `frontend/src/main.tsx`
- `frontend/src/App.tsx`
- `frontend/src/App.css`
- `frontend/src/api/client.ts`
- `frontend/src/pages/ReviewQueue.tsx`
- `frontend/src/pages/MomentDetail.tsx`
- `frontend/src/vite-env.d.ts`


## Deviations
Added src/vite-env.d.ts for Vite type declarations (required for TypeScript). ReviewQueue page fetches real data with loading/error states instead of bare placeholder text.

## Known Issues
None.
