feat(admin): scaffold Vite+React admin workspace

apps/admin/src/lib/api.ts

@@ -0,0 +1,37 @@
+import { getToken, setToken } from './auth-storage';
+
+export const API_URL = import.meta.env.VITE_API_URL ?? 'http://localhost:3000';
+
+export class ApiError extends Error {
+  constructor(
+    public status: number,
+    message: string
+  ) {
+    super(message);
+    this.name = 'ApiError';
+  }
+}
+
+export async function apiFetch<T>(path: string, init: RequestInit = {}): Promise<T> {
+  const token = getToken();
+  const headers = new Headers(init.headers);
+  if (token) headers.set('Authorization', `Bearer ${token}`);
+  if (init.body && !headers.has('Content-Type')) headers.set('Content-Type', 'application/json');
+  const res = await fetch(`${API_URL}${path}`, { ...init, headers });
+  if (!res.ok) throw new ApiError(res.status, `Request failed: ${res.status}`);
+  const text = await res.text();
+  return (text ? JSON.parse(text) : undefined) as T;
+}
+
+// Sign in: POST /api/auth/sign-in/email, capture the bearer token from the response header.
+export async function signIn(email: string, password: string): Promise<void> {
+  const res = await fetch(`${API_URL}/api/auth/sign-in/email`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ email, password }),
+  });
+  if (!res.ok) throw new ApiError(res.status, 'Inloggen mislukt');
+  const token = res.headers.get('set-auth-token');
+  if (!token) throw new ApiError(500, 'Geen token ontvangen');
+  setToken(token);
+}