feat(*): 空间界面 - 统一工作台浮层并收敛画布模型选择焦点样式

web/src/layouts/user-layout.tsx

@@ -1,4 +1,4 @@
-import type { ReactNode } from "react";
+import { useLayoutEffect, type ReactNode } from "react";
 import { useLocation } from "react-router";
 
 import { CanvasDeleteProjectsDialog } from "@/components/canvas/canvas-delete-projects-dialog";
@@ -9,6 +9,13 @@ import { isSpatialWorkbenchPath } from "@/lib/workspace-routes";
 export default function UserLayout({ children }: { children: ReactNode }) {
     const { pathname } = useLocation();
     const spatialWorkbench = isSpatialWorkbenchPath(pathname);
+
+    useLayoutEffect(() => {
+        // Ant Design 浮层挂载在 body，必须用路由级标记隔离用户工作台与画布编辑器、运营后台。
+        document.body.classList.toggle("app-spatial-overlays", spatialWorkbench);
+        return () => document.body.classList.remove("app-spatial-overlays");
+    }, [spatialWorkbench]);
+
     return (
         <div className={cn("app-user-workspace h-dvh overflow-hidden text-foreground", spatialWorkbench && "app-spatial-workspace")}>
             <AppWorkspaceShell>{children}</AppWorkspaceShell>