1、修改前台登陆样式背景可使用视频

2、增加后台配置前台背景样式

video-gen-admin/src/api/index.ts

@@ -276,6 +276,22 @@ export async function uploadLogo(file: File): Promise<{ url: string }> {
   return { url: res.url };
 }
 
+export async function uploadLoginVideo(file: File): Promise<{ url: string }> {
+  const form = new FormData();
+  form.append('file', file);
+  const token = localStorage.getItem('auth_token');
+  const res = await fetch(`${import.meta.env.VITE_API_BASE || 'http://localhost:8000'}/api/admin/upload-login-video`, {
+    method: 'POST',
+    headers: token ? { Authorization: `Bearer ${token}` } : {},
+    body: form,
+  });
+  if (!res.ok) {
+    const err = await res.json().catch(() => ({}));
+    throw new Error(err?.detail || '上传失败');
+  }
+  return res.json();
+}
+
 function setMaybe(params: URLSearchParams, key: string, value: unknown): void {
   if (value !== undefined && value !== null && String(value) !== '') params.set(key, String(value));
 }