修复登录注册验证码bug

src/api/token.ts

@@ -1,4 +1,4 @@
-const AUTH_EVENT = "auth-change"
+export const AUTH_EVENT = "auth-change"
 
 const TOKEN_KEY = "auth_token"
 const USER_KEY = "auth_user"
@@ -8,6 +8,11 @@ export function readCookie(name: string): string | null {
   return match ? decodeURIComponent(match[1]) : null
 }
 
+export function clearCookie(name: string) {
+  // biome-ignore lint/suspicious/noDocumentCookie: Cookie Store API 兼容性不足，标准做法是覆盖写入
+  document.cookie = `${name}=; max-age=0; path=/`
+}
+
 export function getUserToken(): string | null {
   return localStorage.getItem(TOKEN_KEY)
 }