feat: P1-P3 Console navigation integration — replace HTML5 DnD with @dnd-kit, add nav pinning, add AppSchemaRenderer slots

- P1: Replace native HTML5 DnD in AppSidebar with NavigationRenderer's @dnd-kit
  - Remove custom DndContext, draggable attributes, onDragStart/Over/Drop handlers
  - Delegate to NavigationRenderer with enableReorder + onReorder props
  - Adapt useNavOrder hook to work with NavigationRenderer's onReorder callback
  - PointerSensor + KeyboardSensor with 5px activation distance (from layout pkg)

- P2: Add navigation pin functionality
  - Create useNavPins hook with localStorage persistence
  - Integrate with NavigationRenderer's enablePinning + onPinToggle
  - Apply pin state to navigation items via applyPins()
  - Coexists with existing useFavorites (record-level favorites)

- P3: AppSchemaRenderer migration (Phase 1)
  - Add sidebarHeader, sidebarExtra slots to AppSchemaRenderer
  - AppSidebar delegates navigation rendering to NavigationRenderer
  - Console-specific features preserved (app switcher, user footer, favorites, recent items)
  - Remove duplicated NavigationTree/NavigationItemRenderer code (~120 lines removed)

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

apps/console/src/__tests__/AppSidebar.test.tsx

@@ -72,6 +72,16 @@ vi.mock('../hooks/useFavorites', () => ({
   useFavorites: () => ({ favorites: [], removeFavorite: vi.fn() }),
 }));
 
+vi.mock('../hooks/useNavPins', () => ({
+  useNavPins: () => ({
+    pinnedIds: [],
+    togglePin: vi.fn(),
+    isPinned: () => false,
+    applyPins: (items: any[]) => items,
+    clearPins: vi.fn(),
+  }),
+}));
+
 vi.mock('../utils', () => ({
   resolveI18nLabel: (label: any) => (typeof label === 'string' ? label : label?.en || ''),
 }));