update the new school year model

src/api/http.ts

@@ -11,6 +11,25 @@ export function setStoredToken(token: string | null): void {
   else localStorage.removeItem(TOKEN_KEY)
 }
 
+export function decodeJwtPayload<T = unknown>(token: string): T | null {
+  try {
+    const payload = token.split('.')[1]
+    if (!payload) return null
+
+    const base64 = payload.replace(/-/g, '+').replace(/_/g, '/')
+    const json = decodeURIComponent(
+      atob(base64)
+        .split('')
+        .map((char) => `%${char.charCodeAt(0).toString(16).padStart(2, '0')}`)
+        .join(''),
+    )
+
+    return JSON.parse(json) as T
+  } catch {
+    return null
+  }
+}
+
 export class ApiHttpError extends Error {
   readonly status: number
   readonly body: unknown
@@ -30,24 +49,36 @@ export async function apiFetch<T>(
 ): Promise<T> {
   const attachAuth = opts.attachAuth !== false
   const headers = new Headers(init.headers)
-  if (!headers.has('Accept')) headers.set('Accept', 'application/json')
+
+  if (!headers.has('Accept')) {
+    headers.set('Accept', 'application/json')
+  }
 
   const token = getStoredToken()
+
   if (attachAuth && token && !headers.has('Authorization')) {
     headers.set('Authorization', `Bearer ${token}`)
   }
 
   const url = apiUrl(path)
+
   let res: Response
+
   try {
-    res = await fetch(url, { ...init, headers })
+    res = await fetch(url, {
+      ...init,
+      headers,
+    })
   } catch (e) {
     const hint = import.meta.env.DEV
-      ? ' Start the API and ensure Vite can reach it (see vite.config.ts; default proxy is http://localhost:8080 unless VITE_PROXY_API is set).'
+      ? ' Start the API and ensure Vite can reach it. Default proxy is http://localhost:8000 unless VITE_PROXY_API or VITE_API_ORIGIN is set.'
       : ''
+
     const reason = e instanceof Error ? e.message : 'Failed to fetch'
+
     throw new ApiHttpError(`Network error: ${reason}.${hint}`, 0, null)
   }
+
   const body: unknown = await res.json().catch(() => null)
 
   if (!res.ok) {
@@ -55,6 +86,7 @@ export async function apiFetch<T>(
       typeof body === 'object' && body !== null && 'message' in body
         ? String((body as { message?: unknown }).message ?? '')
         : ''
+
     throw new ApiHttpError(msg || `HTTP ${res.status}`, res.status, body)
   }