test(desktop): keep rebased checks green

apps/desktop/src/app/chat/close-tab.test.ts

@@ -14,6 +14,9 @@ vi.mock('@/app/right-sidebar/terminal/terminals', () => ({
 }))
 
 vi.mock('@/components/pane-shell/tree/store', () => ({
+  // preview.ts stamps explicit opens against the focused tree group.
+  $activeTreeGroup: atom(null),
+  $layoutTree: atom(null),
   closeFocusedSessionTab: () => closeFocusedSessionTab(),
   closeFocusedToolTab: () => closeFocusedToolTab()
 }))

apps/desktop/src/app/chat/preview-tile.tsx

@@ -37,8 +37,8 @@ import { explicitOpenBlocksZone, PREVIEW_TILE_PREFIX } from '@/store/preview-exp
 import { canOpenBrowserWindow } from '@/store/windows'
 
 import { paneMirror } from './pane-mirror'
-import { forgetPreviewConsole } from './right-rail/preview-console-store'
 import { PreviewTilePane } from './right-rail/preview'
+import { forgetPreviewConsole } from './right-rail/preview-console-store'
 
 /** The target behind a tile id, or null once its tab is gone. */
 function targetFor(tabId: string): PreviewTarget | null {
@@ -228,7 +228,12 @@ export function watchPreviewTiles(): void {
 
     // Do not copy this zone over an explicit open that lives in a different
     // group. A focus change after that open lifts the guard.
-    if (explicitOpenBlocksZone(groupId, $previewTabs.get().map(tab => tab.id))) {
+    if (
+      explicitOpenBlocksZone(
+        groupId,
+        $previewTabs.get().map(tab => tab.id)
+      )
+    ) {
       return
     }
 

apps/desktop/src/app/chat/right-rail/preview-reader.test.ts

@@ -1,15 +1,12 @@
 import { beforeEach, describe, expect, it } from 'vitest'
 
 import { group, split } from '@/components/pane-shell/tree/model'
-import {
-  $layoutTree,
-  noteActiveTreeGroup,
-  noteHoveredTreeGroup
-} from '@/components/pane-shell/tree/store'
+import { $layoutTree, noteActiveTreeGroup, noteHoveredTreeGroup } from '@/components/pane-shell/tree/store'
 import { $rightRailActiveTabId, selectRightRailTab } from '@/store/layout'
 import { $previewTabs, closeRightRail, openPreview, type PreviewTarget } from '@/store/preview'
 
 import { watchPreviewTiles } from '../preview-tile'
+
 import { PREVIEW_READ_MAX_CHARS, readActivePreview, registerPreviewPageReader } from './preview-reader'
 
 function urlTarget(url: string): PreviewTarget {