Upgrading to Angular 20:

Replaced checked in package-lock.json by regenerated one.
Ran ng update @angular/core@20 @angular/cli@20
Ran npm install @angular-builders/jest@^20.0.0 @fortawesome/angular-fontawesome@^3.0.0 @swimlane/ngx-graph@^11
Ran npm install ngx-mat-select-search@^8.0.2.
Ran ng update @angular/material@20.
Updated all eslint and typescript to the latest versions.
Removed @angular-devkit/schematics.
Updated fontawesome.
Updated rxjs and tslib.
Moved required node version from 16 to 20.
Updated jest-preset-angular.
Set preserveWhitespaces to false.
Corrected two type declarations in two typescript files to make ng serve run without errors.
Removed unused angular-devkit/schematics from view-user.component.ts .
Updated list of supported browsers.
Upgraded prettier.
Ran prettier . --write the first time.
Ran prettier . --write the second time.
Ran ng generate @angular/core:inject with defaults, excepted a handful of files.
Fixed remaining eslint problems.
Added dist directory to ignores in eslint.config.js.
Let prettier fix formatting, almost everything is just line breaks.
Made htmlhint ignore @if and @for Angular constructs.
Updated node version in Github workflow to 22.12.0 (build.yml).
Updated .env.ts.
Updated Angular datetime format strings from YYYY-MM-DD to yyyy-MM-dd.
Merged changes from dev into angular20 branch.

src/app/system/manage-jobs/scheduler-jobs/manage-scheduler-jobs.component.html

@@ -6,14 +6,18 @@
       }}</span>
     </h2>
   </div>
-  <button mat-raised-button class="suspend" (click)="suspendScheduler()" *ngIf="schedulerActive">
-    <fa-icon icon="times-circle" class="m-r-10"></fa-icon>
-    {{ 'labels.buttons.Suspend' | translate }}
-  </button>
-  <button mat-raised-button class="activate" (click)="activateScheduler()" *ngIf="!schedulerActive">
-    <fa-icon icon="times-circle" class="m-r-10"></fa-icon>
-    {{ 'labels.buttons.Activate' | translate }}
-  </button>
+  @if (schedulerActive) {
+    <button mat-raised-button class="suspend" (click)="suspendScheduler()">
+      <fa-icon icon="times-circle" class="m-r-10"></fa-icon>
+      {{ 'labels.buttons.Suspend' | translate }}
+    </button>
+  }
+  @if (!schedulerActive) {
+    <button mat-raised-button class="activate" (click)="activateScheduler()">
+      <fa-icon icon="times-circle" class="m-r-10"></fa-icon>
+      {{ 'labels.buttons.Activate' | translate }}
+    </button>
+  }
 </div>
 
 <div class="container">
@@ -52,14 +56,15 @@
           </mat-checkbox>
         </th>
         <td mat-cell *matCellDef="let row">
-          <mat-checkbox
-            class="m-r-10"
-            *ngIf="!row.currentlyRunning"
-            (click)="$event.stopPropagation()"
-            (change)="$event ? selection.toggle(row) : null"
-            [checked]="selection.isSelected(row)"
-          >
-          </mat-checkbox>
+          @if (!row.currentlyRunning) {
+            <mat-checkbox
+              class="m-r-10"
+              (click)="$event.stopPropagation()"
+              (change)="$event ? selection.toggle(row) : null"
+              [checked]="selection.isSelected(row)"
+            >
+            </mat-checkbox>
+          }
         </td>
       </ng-container>
 
@@ -85,27 +90,31 @@
       <ng-container matColumnDef="previousRunTime">
         <th mat-header-cell *matHeaderCellDef mat-sort-header>{{ 'labels.inputs.Previous Run' | translate }}</th>
         <td mat-cell *matCellDef="let job">
-          <div *ngIf="job.lastRunHistory">
-            <fa-icon
-              *ngIf="job.lastRunHistory.status === 'success'"
-              class="success"
-              [matTooltip]="'tooltips.Successful' | translate"
-              matTooltipPosition="right"
-              icon="check-circle"
-              size="lg"
-            ></fa-icon>
-            <fa-icon
-              *ngIf="!(job.lastRunHistory.status === 'success')"
-              class="fail"
-              [matTooltip]="'tooltips.Failed' | translate"
-              matTooltipPosition="right"
-              icon="times-circle"
-              size="lg"
-            ></fa-icon>
-            <span *ngIf="job.lastRunHistory" class="m-l-5">
-              {{ job.lastRunHistory.jobRunStartTime | datetimeFormat }}</span
-            >
-          </div>
+          @if (job.lastRunHistory) {
+            <div>
+              @if (job.lastRunHistory.status === 'success') {
+                <fa-icon
+                  class="success"
+                  [matTooltip]="'tooltips.Successful' | translate"
+                  matTooltipPosition="right"
+                  icon="check-circle"
+                  size="lg"
+                ></fa-icon>
+              }
+              @if (!(job.lastRunHistory.status === 'success')) {
+                <fa-icon
+                  class="fail"
+                  [matTooltip]="'tooltips.Failed' | translate"
+                  matTooltipPosition="right"
+                  icon="times-circle"
+                  size="lg"
+                ></fa-icon>
+              }
+              @if (job.lastRunHistory) {
+                <span class="m-l-5"> {{ job.lastRunHistory.jobRunStartTime | datetimeFormat }}</span>
+              }
+            </div>
+          }
         </td>
       </ng-container>
 
@@ -131,16 +140,17 @@
       <ng-container matColumnDef="errorLog">
         <th mat-header-cell *matHeaderCellDef mat-sort-header>{{ 'labels.inputs.Error Log' | translate }}</th>
         <td mat-cell *matCellDef="let job" class="center">
-          <button
-            mat-icon-button
-            class="errorlog"
-            (click)="showErrorLog(job)"
-            *ngIf="jobWithError(job)"
-            matTooltip="{{ 'labels.inputs.Error Log' | translate }}"
-            matTooltipPosition="right"
-          >
-            <fa-icon icon="exclamation-circle" size="lg"></fa-icon>
-          </button>
+          @if (jobWithError(job)) {
+            <button
+              mat-icon-button
+              class="errorlog"
+              (click)="showErrorLog(job)"
+              matTooltip="{{ 'labels.inputs.Error Log' | translate }}"
+              matTooltipPosition="right"
+            >
+              <fa-icon icon="exclamation-circle" size="lg"></fa-icon>
+            </button>
+          }
         </td>
       </ng-container>