服务端媒体源导入/保存/客户端输出链路修复：支持 snake/camel、subcategories/sources，默认客户端可见，保存后发布兼容 media-types.json。

新增数据库同步 Job API、持久化状态、实时输出、最新任务恢复，以及系统日志聚合接口。
管理端优化：日志中心、运维实时状态框、同步输出自动滚动、仪表盘“输出”列、真实延迟空态、本地 favicon/avatar。
新增 server/unified-management/assets/favicon.ico 和 developer-avatar.png，并接好 /favicon.ico、/admin/favicon.ico、/setup/favicon.ico、/assets/*。
WinUI 随机放映室卡片优先显示子接口原始 Description。
Inno 安装器输出框改为选区末尾 + SendMessage 滚动到底部。

installer/ymhut_box_winui.iss

@@ -226,6 +226,9 @@ const
   InstallOutputFlushLines = 16;
   InstallOutputTrimCharacters = 65000;
   InstallOutputKeepCharacters = 48000;
+  EM_SCROLLCARET = $00B7;
+  WM_VSCROLL = $0115;
+  SB_BOTTOM = 7;
   BundledVCRedistIncluded = {#BundleVCRedist};
   BundledWebView2Included = {#BundleWebView2};
   WebView2ClientKey = 'SOFTWARE\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}';
@@ -245,6 +248,9 @@ var
   InstallOutputPendingLineCount: Integer;
   InstallOutputBuffer: string;
 
+function SendMessage(hWnd: Longint; Msg: Longint; wParam: Longint; lParam: Longint): Longint;
+  external 'SendMessageW@user32.dll stdcall';
+
 function NormalizePathPrefix(const Value: string): string;
 begin
   Result := Lowercase(AddBackslash(ExpandConstant(Value)));
@@ -449,6 +455,9 @@ begin
     Exit;
 
   InstallOutputMemo.SelStart := Length(InstallOutputMemo.Text);
+  InstallOutputMemo.SelLength := 0;
+  SendMessage(InstallOutputMemo.Handle, EM_SCROLLCARET, 0, 0);
+  SendMessage(InstallOutputMemo.Handle, WM_VSCROLL, SB_BOTTOM, 0);
 end;
 
 procedure FlushInstallOutput();