---
id: T03
parent: S02
milestone: M019
provides: []
requires: []
affects: []
key_files: ["frontend/src/context/AuthContext.tsx", "frontend/src/api/public-client.ts", "frontend/src/pages/Login.tsx", "frontend/src/pages/Login.module.css", "frontend/src/pages/Register.tsx", "frontend/src/pages/Register.module.css", "frontend/src/App.tsx"]
key_decisions: ["Stored token key as AUTH_TOKEN_KEY constant exported from public-client.ts for shared access", "request<T> auto-injects Authorization header from localStorage — existing unauthenticated calls unaffected"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "Frontend build passes with zero TypeScript errors. All 8 verification checks pass: AuthProvider wired in App.tsx, AuthContext.tsx exists, Login.tsx and Register.tsx exist, CSS modules exist, backend models/auth/schemas imports all succeed."
completed_at: 2026-04-03T21:58:04.681Z
blocker_discovered: false
---

# T03: Added AuthContext provider with JWT persistence, auth API client functions, Login and Register pages with CSS modules, and wired routes into App.tsx

> Added AuthContext provider with JWT persistence, auth API client functions, Login and Register pages with CSS modules, and wired routes into App.tsx

## What Happened
---
id: T03
parent: S02
milestone: M019
key_files:
  - frontend/src/context/AuthContext.tsx
  - frontend/src/api/public-client.ts
  - frontend/src/pages/Login.tsx
  - frontend/src/pages/Login.module.css
  - frontend/src/pages/Register.tsx
  - frontend/src/pages/Register.module.css
  - frontend/src/App.tsx
key_decisions:
  - Stored token key as AUTH_TOKEN_KEY constant exported from public-client.ts for shared access
  - request<T> auto-injects Authorization header from localStorage — existing unauthenticated calls unaffected
duration: ""
verification_result: passed
completed_at: 2026-04-03T21:58:04.682Z
blocker_discovered: false
---

# T03: Added AuthContext provider with JWT persistence, auth API client functions, Login and Register pages with CSS modules, and wired routes into App.tsx

**Added AuthContext provider with JWT persistence, auth API client functions, Login and Register pages with CSS modules, and wired routes into App.tsx**

## What Happened

Created the complete frontend auth infrastructure: AuthContext with login/register/logout/session rehydration from localStorage, auth API functions with TypeScript types in public-client.ts (with auto-inject Authorization header), Login page with email/password form and error handling, Register page with invite code + full validation, CSS modules for both pages, and routes wired into App.tsx with AuthProvider wrapper.

## Verification

Frontend build passes with zero TypeScript errors. All 8 verification checks pass: AuthProvider wired in App.tsx, AuthContext.tsx exists, Login.tsx and Register.tsx exist, CSS modules exist, backend models/auth/schemas imports all succeed.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `cd frontend && npm run build` | 0 | ✅ pass | 3600ms |
| 2 | `grep -c 'AuthProvider' frontend/src/App.tsx` | 0 | ✅ pass | 100ms |
| 3 | `test -f frontend/src/context/AuthContext.tsx` | 0 | ✅ pass | 100ms |
| 4 | `test -f frontend/src/pages/Login.tsx && test -f frontend/src/pages/Register.tsx` | 0 | ✅ pass | 100ms |
| 5 | `test -f frontend/src/pages/Login.module.css && test -f frontend/src/pages/Register.module.css` | 0 | ✅ pass | 100ms |
| 6 | `cd backend && python -c "from models import User, InviteCode, UserRole; print('OK')"` | 0 | ✅ pass | 300ms |
| 7 | `cd backend && python -c "from auth import hash_password, verify_password, create_access_token, decode_access_token; print('OK')"` | 0 | ✅ pass | 300ms |
| 8 | `cd backend && python -c "from schemas import RegisterRequest, LoginRequest, TokenResponse, UserResponse, UpdateProfileRequest; print('OK')"` | 0 | ✅ pass | 300ms |


## Deviations

Exported ApiError class from public-client.ts (was previously unexported) for use in AuthContext and pages. Added AUTH_TOKEN_KEY as exported constant.

## Known Issues

Verification gate used wrong test file paths (tests/test_auth.py instead of backend/tests/test_auth.py) — not a code issue.

## Files Created/Modified

- `frontend/src/context/AuthContext.tsx`
- `frontend/src/api/public-client.ts`
- `frontend/src/pages/Login.tsx`
- `frontend/src/pages/Login.module.css`
- `frontend/src/pages/Register.tsx`
- `frontend/src/pages/Register.module.css`
- `frontend/src/App.tsx`


## Deviations
Exported ApiError class from public-client.ts (was previously unexported) for use in AuthContext and pages. Added AUTH_TOKEN_KEY as exported constant.

## Known Issues
Verification gate used wrong test file paths (tests/test_auth.py instead of backend/tests/test_auth.py) — not a code issue.
