feat(dialog): migrate Manager dialog to Reka-UI (Phase 4)

Flip useManagerDialog onto the Reka renderer added in Phase 0. Public API
of useManagerDialog and useDialogService is unchanged.

- dialogComponentProps.renderer='reka' + size='full' + Manager content
  sizing (matches legacy .manager-dialog: 1724px × 80vh, expanding to
  2200×1320 above 3000px viewports).
- modal=false to keep SingleSelect / SearchAutocomplete PrimeVue overlays
  working (focus trap + body pointer-events). Same reason Settings flipped
  to non-modal in Phase 3.
- New useManagerDialog.test.ts pins the renderer flip against regression.

Parent FE-571, this phase FE-576.

src/workbench/extensions/manager/composables/useManagerDialog.test.ts

@@ -0,0 +1,61 @@
+/**
+ * Manager dialog migration regression net: `useManagerDialog().show()` must
+ * route through the Reka renderer at the legacy Manager dimensions (1724px
+ * max-width × 80vh, expanding at 3000px). Catches accidental reverts of the
+ * Phase 4 renderer flip.
+ */
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+
+const showDialog = vi.hoisted(() => vi.fn())
+const closeDialog = vi.hoisted(() => vi.fn())
+
+vi.mock('@/stores/dialogStore', () => ({
+  useDialogStore: () => ({ showDialog, closeDialog })
+}))
+
+import { ManagerTab } from '@/workbench/extensions/manager/types/comfyManagerTypes'
+import { useManagerDialog } from '@/workbench/extensions/manager/composables/useManagerDialog'
+
+describe('useManagerDialog', () => {
+  beforeEach(() => {
+    showDialog.mockReset()
+    closeDialog.mockReset()
+  })
+
+  it("show() opens the Reka renderer with size 'full' and Manager content sizing", () => {
+    useManagerDialog().show()
+    const [args] = showDialog.mock.calls[0]
+    expect(args.key).toBe('global-manager')
+    expect(args.dialogComponentProps.renderer).toBe('reka')
+    expect(args.dialogComponentProps.size).toBe('full')
+    expect(args.dialogComponentProps.contentClass).toContain('max-w-[1724px]')
+    expect(args.dialogComponentProps.contentClass).toContain('h-[80vh]')
+    expect(args.dialogComponentProps.contentClass).toContain('max-h-[1026px]')
+    expect(args.dialogComponentProps.contentClass).toContain(
+      'min-[3000px]:max-w-[2200px]'
+    )
+  })
+
+  it('show() uses non-modal Reka so nested PrimeVue overlays keep focus and pointer events', () => {
+    useManagerDialog().show()
+    const [args] = showDialog.mock.calls[0]
+    expect(args.dialogComponentProps.modal).toBe(false)
+  })
+
+  it('show(initialTab) forwards initialTab to ManagerDialog props', () => {
+    useManagerDialog().show(ManagerTab.UpdateAvailable)
+    const [args] = showDialog.mock.calls[0]
+    expect(args.props.initialTab).toBe(ManagerTab.UpdateAvailable)
+  })
+
+  it('show(initialTab, initialPackId) forwards initialPackId to ManagerDialog props', () => {
+    useManagerDialog().show(ManagerTab.All, 'pack-123')
+    const [args] = showDialog.mock.calls[0]
+    expect(args.props.initialPackId).toBe('pack-123')
+  })
+
+  it('hide() closes the global-manager dialog', () => {
+    useManagerDialog().hide()
+    expect(closeDialog).toHaveBeenCalledWith({ key: 'global-manager' })
+  })
+})

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

@@ -5,6 +5,9 @@ import ManagerDialog from '@/workbench/extensions/manager/components/manager/Man
 
 const DIALOG_KEY = 'global-manager'
 
+const MANAGER_CONTENT_CLASS =
+  'w-[90vw] max-w-[1724px] sm:max-w-[1724px] h-[80vh] max-h-[1026px] min-[3000px]:max-w-[2200px] min-[3000px]:max-h-[1320px] rounded-2xl overflow-hidden'
+
 export function useManagerDialog() {
   const dialogService = useDialogService()
   const dialogStore = useDialogStore()
@@ -21,6 +24,15 @@ export function useManagerDialog() {
         onClose: hide,
         initialTab,
         initialPackId
+      },
+      dialogComponentProps: {
+        renderer: 'reka',
+        // Manager hosts PrimeVue overlays (SingleSelect, SearchAutocomplete)
+        // teleported to body. Reka's modal mode traps focus and disables body
+        // pointer-events, breaking those overlays. Mirrors Settings.
+        modal: false,
+        size: 'full',
+        contentClass: MANAGER_CONTENT_CLASS
       }
     })
   }