feat: expose admin status to frontend via user API

Add is_admin field to UserResponse schema and update AuthContext to
fetch user profile after login, storing and exposing isAdmin boolean.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.beans/nuzlocke-tracker-5svj--expose-admin-status-to-frontend-via-user-api.md

@@ -1,11 +1,11 @@
 ---
 # nuzlocke-tracker-5svj
 title: Expose admin status to frontend via user API
-status: todo
+status: completed
 type: task
 priority: normal
 created_at: 2026-03-21T10:06:20Z
-updated_at: 2026-03-21T10:06:24Z
+updated_at: 2026-03-21T10:18:26Z
 parent: nuzlocke-tracker-ce4o
 blocked_by:
     - nuzlocke-tracker-dwah
@@ -15,13 +15,21 @@ The frontend needs to know if the current user is an admin so it can show/hide t
 
 ## Checklist
 
-- [ ] Add `is_admin` field to the user response schema (`/api/users/me` endpoint)
+- [x] Add `is_admin` field to the user response schema (`/api/users/me` endpoint)
-- [ ] Update `AuthContext` to fetch `/api/users/me` after login and store `isAdmin` in context
+- [x] Update `AuthContext` to fetch `/api/users/me` after login and store `isAdmin` in context
-- [ ] Expose `isAdmin` boolean from `useAuth()` hook
+- [x] Expose `isAdmin` boolean from `useAuth()` hook
-- [ ] Handle edge case: user exists in Supabase but not yet in local DB (first login creates user row with `is_admin=false`)
+- [x] Handle edge case: user exists in Supabase but not yet in local DB (first login creates user row with `is_admin=false`)
 
 ## Files to change
 
 - `backend/src/app/schemas/user.py` or equivalent — add `is_admin` to response
 - `backend/src/app/api/users.py` — ensure `/me` returns `is_admin`
 - `frontend/src/contexts/AuthContext.tsx` — fetch and store admin status
+
+## Summary of Changes
+
+Added `isAdmin` field to frontend auth system:
+
+- **Backend**: Added `is_admin: bool = False` to `UserResponse` schema in `backend/src/app/api/users.py`
+- **Frontend**: Updated `AuthContext` to fetch `/api/users/me` after login and expose `isAdmin` boolean
+- Edge case handled: `syncUserProfile` returns `false` if API call fails (new user auto-created with `is_admin=false` by backend)

backend/src/app/api/users.py

@@ -16,6 +16,7 @@ class UserResponse(CamelModel):
     id: UUID
     email: str
     display_name: str | None = None
+    is_admin: bool = False
 
 
 @router.post("/me", response_model=UserResponse)

frontend/src/contexts/AuthContext.tsx

@@ -1,11 +1,20 @@
 import { createContext, useContext, useEffect, useState, useCallback, useMemo } from 'react'
 import type { User, Session, AuthError } from '@supabase/supabase-js'
 import { supabase } from '../lib/supabase'
+import { api } from '../api/client'
+
+interface UserProfile {
+  id: string
+  email: string
+  displayName: string | null
+  isAdmin: boolean
+}
 
 interface AuthState {
   user: User | null
   session: Session | null
   loading: boolean
+  isAdmin: boolean
 }
 
 interface AuthContextValue extends AuthState {
@@ -18,22 +27,35 @@ interface AuthContextValue extends AuthState {
 
 const AuthContext = createContext<AuthContextValue | null>(null)
 
+async function syncUserProfile(session: Session | null): Promise<boolean> {
+  if (!session) return false
+  try {
+    const profile = await api.post<UserProfile>('/users/me', {})
+    return profile.isAdmin
+  } catch {
+    return false
+  }
+}
+
 export function AuthProvider({ children }: { children: React.ReactNode }) {
   const [state, setState] = useState<AuthState>({
     user: null,
     session: null,
     loading: true,
+    isAdmin: false,
   })
 
   useEffect(() => {
-    supabase.auth.getSession().then(({ data: { session } }) => {
+    supabase.auth.getSession().then(async ({ data: { session } }) => {
-      setState({ user: session?.user ?? null, session, loading: false })
+      const isAdmin = await syncUserProfile(session)
+      setState({ user: session?.user ?? null, session, loading: false, isAdmin })
     })
 
     const {
       data: { subscription },
-    } = supabase.auth.onAuthStateChange((_event, session) => {
+    } = supabase.auth.onAuthStateChange(async (_event, session) => {
-      setState({ user: session?.user ?? null, session, loading: false })
+      const isAdmin = await syncUserProfile(session)
+      setState({ user: session?.user ?? null, session, loading: false, isAdmin })
     })
 
     return () => subscription.unsubscribe()