Fix Safari playback recovery and episode progress memory

src/app/admin/page.tsx

@@ -344,6 +344,7 @@ interface SiteConfig {
   DanmakuSourceType?: 'builtin' | 'custom';
   DanmakuApiBase: string;
   DanmakuApiToken: string;
+  DanmakuAutoLoadDefault?: boolean;
   TMDBApiKey?: string;
   TMDBProxy?: string;
   TMDBReverseProxy?: string;
@@ -7799,6 +7800,7 @@ const SiteConfigComponent = ({
     DanmakuSourceType: 'builtin',
     DanmakuApiBase: 'https://mtvpls-danmu.netlify.app/87654321',
     DanmakuApiToken: '87654321',
+    DanmakuAutoLoadDefault: true,
     TMDBApiKey: '',
     TMDBProxy: '',
     TMDBReverseProxy: '',
@@ -7896,6 +7898,7 @@ const SiteConfigComponent = ({
         DanmakuApiBase:
           config.SiteConfig.DanmakuApiBase || 'http://localhost:9321',
         DanmakuApiToken: config.SiteConfig.DanmakuApiToken || '87654321',
+        DanmakuAutoLoadDefault: config.SiteConfig.DanmakuAutoLoadDefault !== false,
         TMDBApiKey: config.SiteConfig.TMDBApiKey || '',
         TMDBProxy: config.SiteConfig.TMDBProxy || '',
         TMDBReverseProxy: config.SiteConfig.TMDBReverseProxy || '',
@@ -8538,6 +8541,34 @@ const SiteConfigComponent = ({
               </div>
             </>
           )}
+
+          <div className='flex items-center justify-between'>
+            <div>
+              <h4 className='text-sm font-medium text-gray-700 dark:text-gray-300'>
+                默认自动加载弹幕
+              </h4>
+              <p className='text-xs text-gray-500 dark:text-gray-400 mt-1'>
+                新用户或未设置本地偏好时，播放页是否默认自动匹配并加载弹幕。用户仍可在个人设置中自行覆盖。
+              </p>
+            </div>
+            <label className='flex items-center cursor-pointer'>
+              <div className='relative'>
+                <input
+                  type='checkbox'
+                  className='sr-only peer'
+                  checked={siteSettings.DanmakuAutoLoadDefault !== false}
+                  onChange={() =>
+                    setSiteSettings((prev) => ({
+                      ...prev,
+                      DanmakuAutoLoadDefault: prev.DanmakuAutoLoadDefault === false,
+                    }))
+                  }
+                />
+                <div className='w-11 h-6 bg-gray-300 rounded-full peer-checked:bg-green-500 transition-colors dark:bg-gray-600'></div>
+                <div className='absolute top-0.5 left-0.5 w-5 h-5 bg-white rounded-full transition-transform peer-checked:translate-x-5'></div>
+              </div>
+            </label>
+          </div>
         </div>
       </details>