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-api/app/api/v1/auth.py

@@ -342,7 +342,7 @@ async def get_site_info(db: AsyncSession = Depends(get_db)):
     """Public endpoint returning site name, logo, agreement and copyright info."""
     result = await db.execute(
         select(SystemConfig).where(SystemConfig.key.in_([
-            "site_name", "site_logo", "user_agreement_privacy_url", "site_copyright", "operation_manual"
+            "site_name", "site_logo", "user_agreement_privacy_url", "site_copyright", "operation_manual", "login_bg_video"
         ]))
     )
     configs = result.scalars().all()
@@ -365,6 +365,7 @@ async def get_site_info(db: AsyncSession = Depends(get_db)):
         "user_agreement_privacy_url": to_full_url(info.get("user_agreement_privacy_url")),
         "site_copyright": info.get("site_copyright", "© 2024 民众智创 版权所有"),
         "operation_manual": info.get("operation_manual", ""),
+        "login_bg_video": to_full_url(info.get("login_bg_video")) if info.get("login_bg_video") else "",
     }