[refactor] Manager dialog simplification (#8041)

## Summary
Simplifies the Manager dialog by consolidating components and using
BaseModalLayout with v-model support for right panel state.

## Changes
- **Consolidation**: Merged ManagerDialogContent, ManagerHeader,
ManagerNavSidebar, RegistrySearchBar, and SearchFilterDropdown into
single ManagerDialog component
- **Right panel**: Added v-model:rightPanelOpen to BaseModalLayout for
external panel state control; clicking a node card now auto-opens the
info panel
- **Cleanup**: Removed unused useResponsiveCollapse composable, TabItem
and SearchOption types
- **UI tweaks**: Moved action buttons (Install All/Update All) from
header-right-area to contentFilter area


[manager-capture.webm](https://github.com/user-attachments/assets/2dd6092a-965d-4885-8ba6-6a2cc51f024a)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8041-refactor-Manager-dialog-simplification-2e86d73d3650815ba699e49a2748b682)
by [Unito](https://www.unito.io)

---------

Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: github-actions <github-actions@github.com>

src/workbench/extensions/manager/composables/useManagerState.ts

@@ -7,6 +7,7 @@ import { api } from '@/scripts/api'
 import { useDialogService } from '@/services/dialogService'
 import { useCommandStore } from '@/stores/commandStore'
 import { useSystemStatsStore } from '@/stores/systemStatsStore'
+import { useManagerDialog } from '@/workbench/extensions/manager/composables/useManagerDialog'
 import { ManagerTab } from '@/workbench/extensions/manager/types/comfyManagerTypes'
 
 export enum ManagerUIState {
@@ -19,6 +20,7 @@ export function useManagerState() {
   const systemStatsStore = useSystemStatsStore()
   const { systemStats, isInitialized: systemInitialized } =
     storeToRefs(systemStatsStore)
+  const managerDialog = useManagerDialog()
 
   /**
    * The current manager UI state.
@@ -186,11 +188,9 @@ export function useManagerState() {
             detail: t('manager.legacyMenuNotAvailable'),
             life: 3000
           })
-          dialogService.showManagerDialog({ initialTab: ManagerTab.All })
+          await managerDialog.show(ManagerTab.All)
         } else {
-          dialogService.showManagerDialog(
-            options?.initialTab ? { initialTab: options.initialTab } : undefined
-          )
+          await managerDialog.show(options?.initialTab)
         }
         break
     }