feat(dees-simple-appdash): add nested sidebar subviews and preserve submit labels from slotted text

ts_web/elements/00group-simple/dees-simple-appdash/dees-simple-appdash.demo.ts

@@ -353,12 +353,35 @@ export const demoFunc = () => html`
           name: 'Analytics',
           iconName: 'lucide:lineChart',
           element: DemoViewAnalytics,
+          subViews: [
+            {
+              name: 'Overview',
+              iconName: 'lucide:activity',
+              element: DemoViewAnalytics,
+            },
+            {
+              name: 'Reports',
+              iconName: 'lucide:fileText',
+              element: DemoViewDashboard,
+            },
+          ],
         },
         {
           name: 'Settings',
           iconName: 'lucide:settings',
-          element: DemoViewSettings,
-        }
+          subViews: [
+            {
+              name: 'Profile',
+              iconName: 'lucide:user',
+              element: DemoViewSettings,
+            },
+            {
+              name: 'Billing',
+              iconName: 'lucide:creditCard',
+              element: DemoViewSettings,
+            },
+          ],
+        },
       ] as IView[]}
       @logout=${() => {
         console.log('Logout event triggered');