fix(auth): migrate frontend to Better Auth

src/lib/api.ts

@@ -27,9 +27,6 @@ export class ApiError extends Error {
 interface ApiRequestOptions extends Omit<RequestInit, 'body'> {
   body?: BodyInit | Record<string, unknown> | null
   auth?: boolean
-  // Kept for callers that explicitly disable retries. Cookie sessions do not
-  // use a refresh-and-retry flow, so this option is intentionally ignored.
-  retry?: boolean
 }
 
 function isJsonBody(body: ApiRequestOptions['body']): body is Record<string, unknown> {
@@ -105,7 +102,7 @@ async function toApiError(response: Response) {
 }
 
 async function request<T>(path: string, options: ApiRequestOptions = {}) {
-  const { body, auth = true, retry: _retry, ...requestOptions } = options
+  const { body, auth = true, ...requestOptions } = options
   const headers = new Headers(requestOptions.headers)
   let requestBody: BodyInit | null | undefined = body as BodyInit | null | undefined