Update tests and ROADMAP for navigation mode fixes

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

Author: Copilot

ROADMAP.md

@@ -1050,6 +1050,21 @@ The `FlowDesigner` is a canvas-based flow editor that bridges the gap between th
 
 **Tests:** All 32 ObjectView tests and 29 useNavigationOverlay tests pass.
 
+### ListView Multi-Navigation Mode Support — split/popover/page/new_window (February 2026)
+
+**Root Cause:** While `drawer`/`modal` modes worked in the Console ObjectView, the remaining 4 navigation modes had gaps:
+1. Console's `onNavigate` callback relied on implicit fallthrough for `view` action (page mode) — not explicit.
+2. `PluginObjectView`'s `formLayout` only mapped `drawer`/`modal` modes; `split`/`popover` fell through to the default layout (`drawer`), rendering the wrong overlay type.
+3. `PluginObjectView` lacked `NavigationOverlay` integration for `split` (resizable side-by-side panels) and `popover` (compact dialog preview).
+
+**Fix:**
+- Console `onNavigate` now explicitly checks for `action === 'view'` (page mode) alongside the existing `'new_window'` check.
+- `PluginObjectView` `formLayout` now includes `split` and `popover` branches.
+- `PluginObjectView` imports and renders `NavigationOverlay` from `@object-ui/components` for both `split` mode (with `mainContent` wrapping the grid) and `popover` mode (Dialog fallback when no `popoverTrigger`).
+- Split mode close button properly resets form state via `handleFormCancel`.
+
+**Tests:** Updated split/popover tests to verify `NavigationOverlay` rendering (close panel button for split, dialog role for popover). Added split close-and-return test. All 29 PluginObjectView tests and 37 Console ObjectView tests pass.
+
 ### ListView Grouping Mode Empty Rows (February 2026)
 
 **Root Cause:** When grouping is enabled in list view, `buildGroupTableSchema` in `ObjectGrid.tsx` sets `pagination: false` but inherits `pageSize: 10` from the parent schema. The `DataTableRenderer` filler row logic (`Array.from({ length: Math.max(0, pageSize - paginatedData.length) })`) pads each group table with empty rows up to `pageSize`, creating many blank lines.

packages/plugin-view/src/__tests__/ObjectView.test.tsx

@@ -300,8 +300,9 @@ describe('ObjectView', () => {
 
       fireEvent.click(screen.getByTestId('grid-row'));
 
-      // Split mode should trigger form display in view mode
+      // Split mode renders NavigationOverlay with split panels including a close button
       expect(screen.getByTestId('object-form')).toBeDefined();
+      expect(screen.getByLabelText('Close panel')).toBeDefined();
     });
 
     it('should open form in view mode when popover navigation mode is clicked', () => {
@@ -315,8 +316,30 @@ describe('ObjectView', () => {
 
       fireEvent.click(screen.getByTestId('grid-row'));
 
-      // Popover mode should trigger form display in view mode
+      // Popover mode renders NavigationOverlay Dialog fallback (no popoverTrigger)
       expect(screen.getByTestId('object-form')).toBeDefined();
+      expect(screen.getByRole('dialog')).toBeDefined();
+    });
+
+    it('should close split panel and return to normal view', () => {
+      const schema: ObjectViewSchema = {
+        type: 'object-view',
+        objectName: 'contacts',
+        navigation: { mode: 'split' },
+      };
+
+      render(<ObjectView schema={schema} dataSource={mockDataSource} />);
+
+      // Open split panel
+      fireEvent.click(screen.getByTestId('grid-row'));
+      expect(screen.getByLabelText('Close panel')).toBeDefined();
+
+      // Close split panel
+      fireEvent.click(screen.getByLabelText('Close panel'));
+
+      // Form should be gone, grid should remain
+      expect(screen.queryByLabelText('Close panel')).toBeNull();
+      expect(screen.getByTestId('object-grid')).toBeDefined();
     });
   });