feat: add expandable sidebar with persistent toggle and hover-to-expand

- Logo click toggles sidebar expansion to show link titles (persisted)
- Layout button hover temporarily expands sidebar
- More/Bookmarks menus open on hover, close when hovering other items
- Context menus on More/Bookmarks activators (show all, add link)
- Theme-colored dividers between menu sections
- Tooltips suppressed when sidebar expanded
- Settings sub-nav coexists with expanded sidebar (wider drawer)
- Layout button always visible, navigates home on click
- Icon type hints added to NavLinkDialog
- Navigation settings reordered, confirm hidden when new-tab enabled

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: mrmees

src/App.vue

@@ -4,7 +4,10 @@
     :class="{ 'no-pointer-events': dragState }"
   >
     <app-tools-drawer v-model="toolsdrawer" />
-    <app-nav-drawer v-model="navdrawer" />
+    <app-nav-drawer
+      v-model="navdrawer"
+      :sidebar-expanded.sync="sidebarExpanded"
+    />
 
     <inline-svg
       v-if="showBackgroundLogo && !isMobileViewport"
@@ -15,6 +18,7 @@
     <app-bar
       @toolsdrawer="handleToolsDrawerChange"
       @navdrawer="handleNavDrawerChange"
+      @sidebarExpand="handleSidebarExpandToggle"
     />
 
     <flash-message
@@ -380,6 +384,22 @@ export default class App extends Mixins(StateMixin, FilesMixin, BrowserMixin) {
     this.navdrawer = !this.navdrawer
   }
 
+  get sidebarExpanded (): boolean {
+    return this.$typedState.config.uiSettings.navigation?.sidebarExpanded ?? false
+  }
+
+  set sidebarExpanded (value: boolean) {
+    this.$typedDispatch('config/saveByPath', {
+      path: 'uiSettings.navigation.sidebarExpanded',
+      value,
+      server: true
+    })
+  }
+
+  handleSidebarExpandToggle () {
+    this.sidebarExpanded = !this.sidebarExpanded
+  }
+
   handleDragOver (event: DragEvent) {
     if (
       this.socketConnected &&

src/components/layout/AppBar.vue

@@ -6,13 +6,14 @@
     :color="$vuetify.theme.currentTheme.appbar"
     :height="$globals.HEADER_HEIGHT"
   >
-    <router-link
+    <div
       v-if="!isMobileViewport"
-      :to="{ name: 'home' }"
       class="toolbar-logo"
+      style="cursor: pointer;"
+      @click="$emit('sidebarExpand')"
     >
       <app-icon />
-    </router-link>
+    </div>
 
     <div class="toolbar-title">
       <app-btn