UI: add desktop sidenav collapse/expand with width animation

Sidenav width is now driven by signals — 250px expanded, 50px collapsed — with a matching margin-left animation on mat-sidenav-content. The toolbar button toggles between sidebar-close and sidebar-open icons, and the logo is hidden when the rail is collapsed. Desktop-only; mobile overlay sidenav keeps its existing behaviour.

ui-ngx/src/app/modules/home/home.component.html

@@ -17,16 +17,26 @@
 -->
 <mat-sidenav-container>
   <mat-sidenav #sidenav class="tb-site-sidenav mat-elevation-z2"
+               [class.tb-desktop]="sidenavDesktop()"
                [disableClose]="sidenavOpened"
                (click)="sidenavClicked()"
                [mode]="sidenavMode"
-               [opened]="sidenavOpened && !forceFullscreen">
+               [opened]="sidenavOpened && !forceFullscreen"
+               [style.width]="sidenavWidth()">
     <header class="tb-nav-header">
       <mat-toolbar class="tb-nav-header-toolbar">
         <div class="flex flex-1 flex-row justify-between">
-          <tb-logo [src]="logo" class="tb-logo-title"></tb-logo>
-          @if (sidenavDesktop) {
-            <button mat-icon-button class="tb-mat-32"><tb-icon class="tb-mat-20">sidebar-close</tb-icon></button>
+          @if (showLogo()) {
+            <tb-logo [src]="logo" class="tb-logo-title"></tb-logo>
+          }
+          @if (sidenavDesktop()) {
+            <button mat-icon-button class="tb-mat-32" (click)="toggleSidenav()">
+              @if (sidenavCollapsed()) {
+                <tb-icon class="tb-mat-20">sidebar-open</tb-icon>
+              } @else {
+                <tb-icon class="tb-mat-20">sidebar-close</tb-icon>
+              }
+            </button>
           }
         </div>
       </mat-toolbar>
@@ -38,7 +48,9 @@
       <tb-user-menu></tb-user-menu>
     </mat-toolbar>
   </mat-sidenav>
-  <mat-sidenav-content>
+  <mat-sidenav-content class="tb-site-content"
+                       [class.tb-desktop]="sidenavDesktop()"
+                       [style.margin-left]="sidenavWidth()">
     <div class="flex flex-col" role="main" style="height: 100%;">
       <mat-toolbar class="tb-primary-toolbar flex flex-row">
         <button mat-icon-button id="main"

ui-ngx/src/app/modules/home/home.component.scss

@@ -13,6 +13,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
+$sidenav-anim-timing: 400ms cubic-bezier(0.25, 0.8, 0.25, 1);
+
 :host {
   display: flex;
   width: 100%;
@@ -26,6 +29,9 @@
     @media (max-width:456px) {
       width: calc(100% - 56px);
     }
+    &.tb-desktop {
+      transition: width $sidenav-anim-timing;
+    }
     .tb-nav-header {
       z-index: 2;
       flex-shrink: 0;
@@ -60,6 +66,12 @@
       }
     }
   }
+  mat-sidenav-content.tb-site-content {
+    &.tb-desktop {
+      margin-left: 250px;
+      transition: margin-left $sidenav-anim-timing;
+    }
+  }
   .tb-primary-toolbar {
     z-index: 2;
     height: 56px;

ui-ngx/src/app/modules/home/home.component.ts

@@ -14,7 +14,17 @@
 /// limitations under the License.
 ///
 
-import { AfterViewInit, Component, ElementRef, Inject, OnDestroy, OnInit, ViewChild } from '@angular/core';
+import {
+  AfterViewInit,
+  Component,
+  computed,
+  ElementRef,
+  Inject,
+  OnDestroy,
+  OnInit,
+  signal,
+  ViewChild
+} from '@angular/core';
 import { skip, startWith, Subject } from 'rxjs';
 import { Store } from '@ngrx/store';
 import { debounceTime, distinctUntilChanged, takeUntil } from 'rxjs/operators';
@@ -52,10 +62,15 @@ export class HomeComponent extends PageComponent implements AfterViewInit, OnIni
 
   sidenavMode: 'over' | 'push' | 'side' = 'side';
   sidenavOpened = true;
-  sidenavDesktop = true;
+
+  sidenavDesktop = signal(true);
+  sidenavCollapsed = signal(false);
+  sidenavWidth = computed(() => this.sidenavDesktop() ? (this.sidenavCollapsed() ? '50px' : '250px') : '');
 
   logo = 'assets/logo_title_black.svg';
 
+  showLogo= computed(() => !this.sidenavDesktop() || !this.sidenavCollapsed());
+
   @ViewChild('sidenav')
   sidenav: MatSidenav;
 
@@ -84,7 +99,7 @@ export class HomeComponent extends PageComponent implements AfterViewInit, OnIni
     const isGtSm = this.breakpointObserver.isMatched(MediaBreakpoints['gt-sm']);
     this.sidenavMode = isGtSm ? 'side' : 'over';
     this.sidenavOpened = isGtSm;
-    this.sidenavDesktop = isGtSm;
+    this.sidenavDesktop.set(isGtSm);
 
     this.breakpointObserver
       .observe(MediaBreakpoints['gt-sm'])
@@ -93,11 +108,11 @@ export class HomeComponent extends PageComponent implements AfterViewInit, OnIni
           if (state.matches) {
             this.sidenavMode = 'side';
             this.sidenavOpened = true;
-            this.sidenavDesktop = true;
+            this.sidenavDesktop.set(true);
           } else {
             this.sidenavMode = 'over';
             this.sidenavOpened = false;
-            this.sidenavDesktop = false;
+            this.sidenavDesktop.set(false);
           }
         }
       );
@@ -124,6 +139,10 @@ export class HomeComponent extends PageComponent implements AfterViewInit, OnIni
     }
   }
 
+  toggleSidenav() {
+    this.sidenavCollapsed.update(state => !state);
+  }
+
   toggleFullscreen() {
     if (screenfull.isEnabled) {
       screenfull.toggle();