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。

server/unified-management/internal/web/router_test.go

@@ -447,6 +447,31 @@ func TestBuiltFrontendAssetsAreServed(t *testing.T) {
 	}
 }
 
+func TestServerBrandAssetsAreServed(t *testing.T) {
+	handler, cleanup := testRouter(t)
+	defer cleanup()
+
+	for _, item := range []struct {
+		Path         string
+		ContentTypes []string
+	}{
+		{Path: "/favicon.ico", ContentTypes: []string{"image/x-icon", "image/vnd.microsoft.icon"}},
+		{Path: "/admin/favicon.ico", ContentTypes: []string{"image/x-icon", "image/vnd.microsoft.icon"}},
+		{Path: "/assets/favicon.ico", ContentTypes: []string{"image/x-icon", "image/vnd.microsoft.icon"}},
+		{Path: "/assets/developer-avatar.png", ContentTypes: []string{"image/png"}},
+	} {
+		req := httptest.NewRequest(http.MethodGet, item.Path, nil)
+		res := httptest.NewRecorder()
+		handler.ServeHTTP(res, req)
+		if res.Code != http.StatusOK {
+			t.Fatalf("%s returned %d: %s", item.Path, res.Code, res.Body.String())
+		}
+		if got := res.Header().Get("Content-Type"); !containsAny(got, item.ContentTypes) {
+			t.Fatalf("%s content type = %q, want one of %v", item.Path, got, item.ContentTypes)
+		}
+	}
+}
+
 func TestAdminSystemAndLegacyAdminPagesServeSPA(t *testing.T) {
 	handler, cleanup := testRouter(t)
 	defer cleanup()
@@ -720,9 +745,19 @@ func testRouter(t *testing.T) (http.Handler, func()) {
 	root := t.TempDir()
 	public := filepath.Join(root, "public")
 	noticeDir := filepath.Join(root, "update-notice")
+	assetDir := filepath.Join(root, "assets")
 	if err := os.MkdirAll(filepath.Join(public, "downloads"), 0o755); err != nil {
 		t.Fatal(err)
 	}
+	if err := os.MkdirAll(assetDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(assetDir, "favicon.ico"), []byte("ico"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(assetDir, "developer-avatar.png"), []byte{0x89, 'P', 'N', 'G', '\r', '\n', 0x1a, '\n'}, 0o644); err != nil {
+		t.Fatal(err)
+	}
 	adminDist := filepath.Join(root, "admin")
 	portalDist := filepath.Join(root, "portal")
 	for _, dir := range []string{filepath.Join(adminDist, "assets"), filepath.Join(portalDist, "assets")} {