Scaffold @forte/admin package with React, Vite, shadcn/ui, TanStack Router

Sets up the admin frontend with login page, auth guard, API client, Zustand
auth store, and all shadcn/ui components. Vite proxies /v1 to backend in dev.

packages/admin/src/lib/api-client.ts

@@ -0,0 +1,77 @@
+import { useAuthStore } from '@/stores/auth.store'
+
+class ApiError extends Error {
+  statusCode: number
+  details?: unknown
+
+  constructor(message: string, statusCode: number, details?: unknown) {
+    super(message)
+    this.name = 'ApiError'
+    this.statusCode = statusCode
+    this.details = details
+  }
+}
+
+async function request<T>(method: string, path: string, body?: unknown): Promise<T> {
+  const { token } = useAuthStore.getState()
+
+  const headers: Record<string, string> = {
+    'Content-Type': 'application/json',
+  }
+
+  if (token) {
+    headers['Authorization'] = `Bearer ${token}`
+  }
+
+  const res = await fetch(path, {
+    method,
+    headers,
+    body: body ? JSON.stringify(body) : undefined,
+  })
+
+  if (res.status === 401) {
+    useAuthStore.getState().logout()
+    window.location.href = '/login'
+    throw new ApiError('Unauthorized', 401)
+  }
+
+  const json = await res.json()
+
+  if (!res.ok) {
+    throw new ApiError(
+      json.error?.message ?? 'Request failed',
+      res.status,
+      json.error?.details,
+    )
+  }
+
+  return json as T
+}
+
+function buildQueryString(params?: Record<string, unknown>): string {
+  if (!params) return ''
+  const searchParams = new URLSearchParams()
+  for (const [key, value] of Object.entries(params)) {
+    if (value !== undefined && value !== null && value !== '') {
+      searchParams.set(key, String(value))
+    }
+  }
+  const qs = searchParams.toString()
+  return qs ? `?${qs}` : ''
+}
+
+export const api = {
+  get: <T>(path: string, params?: Record<string, unknown>) =>
+    request<T>('GET', `${path}${buildQueryString(params)}`),
+
+  post: <T>(path: string, body: unknown) =>
+    request<T>('POST', path, body),
+
+  patch: <T>(path: string, body: unknown) =>
+    request<T>('PATCH', path, body),
+
+  del: <T>(path: string) =>
+    request<T>('DELETE', path),
+}
+
+export { ApiError }