test(desktop): assert the lane on LogoShell directly, not via the sweep

Cursor found the one shell the enumeration could go silent on. `LogoShell` sits under the
`app/(landing)/` prefix allowlist, and this PR replaced its `min-h-screen` with
`desktop-title-bar-page` — so stripping the reservation also strips its last viewport
token and the sweep stops watching it. Doubly exempt, and it is the shell behind
not-found, the interfaces shell (chat, resume), the desktop handoff and the public-file
gates.

`AuthShell` already had a dedicated assertion; `LogoShell` now has the same. Verified by
stripping its reservation: caught now, silent before.

This is the documented enumeration limit made concrete rather than a new class of problem
— a root leaves the sweep when it stops claiming the viewport. The general fix is still to
treat route entry points as window roots, which pulls in seven unassessed pages and
belongs in its own change.

Author: waleedlatif1

apps/sim/app/_shell/desktop-title-bar-surfaces.test.ts

@@ -36,6 +36,7 @@ const workspaceChrome = read(
 const sidebar = read('../workspace/[workspaceId]/w/components/sidebar/sidebar.tsx')
 const globalStyles = read('../_styles/globals.css')
 const desktopTitleBar = read('../_shell/desktop-title-bar.tsx')
+const logoShell = read('../(landing)/components/logo-shell/logo-shell.tsx')
 const pageHeaderBar = read('../../components/page-header-bar.ts')
 const resourceHeader = read(
   '../workspace/[workspaceId]/components/resource/components/resource-header/resource-header.tsx'
@@ -57,6 +58,16 @@ describe('desktop title-bar surface audit', () => {
     expect(authLayout).toContain('<AuthShell>')
   })
 
+  it('keeps the lane on the shell the non-auth desktop surfaces wear', () => {
+    // `LogoShell` backs not-found, the interfaces shell (chat, resume), the desktop handoff
+    // and the public-file gates. It needs its own assertion rather than relying on the
+    // enumeration: it sits under the `app/(landing)/` prefix allowlist, and stripping its
+    // reservation would also strip its last viewport token, so the sweep would fall silent
+    // on the very shell those surfaces depend on.
+    expect(logoShell).toContain('desktop-title-bar-page')
+    expect(logoShell).toContain('<DesktopTitleBarLane />')
+  })
+
   it('mounts a real drag surface across login and workspace title-bar lanes', () => {
     const dragRegion = globalStyles.match(/\.desktop-window-drag-region\s*\{([^}]*)\}/)?.[1]