fix(updater): tighten manual release fallback

apps/web/src/app/app-update-notification-panel.component.spec.ts

@@ -65,7 +65,9 @@ describe('AppUpdateNotificationPanelComponent', () => {
         fixture.detectChanges();
 
         expect(
-            fixture.nativeElement.querySelector('[data-test-id="app-update-notification"]')
+            fixture.nativeElement.querySelector(
+                '[data-test-id="app-update-notification"]'
+            )
         ).not.toBeNull();
     });
 
@@ -86,7 +88,9 @@ describe('AppUpdateNotificationPanelComponent', () => {
             })
         );
         expect(
-            fixture.nativeElement.querySelector('[data-test-id="app-update-notification"]')
+            fixture.nativeElement.querySelector(
+                '[data-test-id="app-update-notification"]'
+            )
         ).not.toBeNull();
     });
 
@@ -103,4 +107,34 @@ describe('AppUpdateNotificationPanelComponent', () => {
 
         expect(window.electron.downloadAppUpdate).toHaveBeenCalledTimes(1);
     });
+
+    it('labels unsupported platform action as a GitHub release link', () => {
+        const open = jest.spyOn(window, 'open').mockImplementation(() => null);
+        statusHandler?.({
+            ...availableStatus,
+            supportedSelfUpdate: false,
+        });
+        fixture.detectChanges();
+
+        const button = fixture.nativeElement.querySelector(
+            '[data-test-id="app-update-notification-download"]'
+        ) as HTMLButtonElement;
+
+        expect(button.textContent).toContain(
+            'SETTINGS.APP_UPDATE_OPEN_RELEASE'
+        );
+        expect(button.querySelector('mat-icon')?.textContent?.trim()).toBe(
+            'open_in_new'
+        );
+
+        button.click();
+
+        expect(window.electron.downloadAppUpdate).not.toHaveBeenCalled();
+        expect(open).toHaveBeenCalledWith(
+            availableStatus.manualDownloadUrl,
+            '_blank',
+            'noreferrer'
+        );
+        open.mockRestore();
+    });
 });

apps/web/src/app/app-update-notification-panel.component.ts

@@ -1,4 +1,11 @@
-import { Component, computed, OnDestroy, OnInit, signal, inject } from '@angular/core';
+import {
+    Component,
+    computed,
+    OnDestroy,
+    OnInit,
+    signal,
+    inject,
+} from '@angular/core';
 import { MatButtonModule } from '@angular/material/button';
 import { MatDialog } from '@angular/material/dialog';
 import { MatIconModule } from '@angular/material/icon';
@@ -46,7 +53,10 @@ import { AppUpdateReleaseNotesDialogComponent } from './settings/app-update-rele
                         }}
                     </strong>
                     @if (status()?.progress; as progress) {
-                        <progress [value]="progress.percent" max="100"></progress>
+                        <progress
+                            [value]="progress.percent"
+                            max="100"
+                        ></progress>
                     }
                 </div>
 
@@ -76,13 +86,14 @@ import { AppUpdateReleaseNotesDialogComponent } from './settings/app-update-rele
                             mat-flat-button
                             type="button"
                             [disabled]="
-                                status()?.status === appUpdateStatuses.Downloading
+                                status()?.status ===
+                                appUpdateStatuses.Downloading
                             "
                             (click)="downloadUpdate()"
                             data-test-id="app-update-notification-download"
                         >
-                            <mat-icon>download</mat-icon>
-                            {{ 'SETTINGS.APP_UPDATE_DOWNLOAD' | translate }}
+                            <mat-icon>{{ primaryActionIcon() }}</mat-icon>
+                            {{ primaryActionLabelKey() | translate }}
                         </button>
                     }
                 </div>
@@ -175,6 +186,16 @@ export class AppUpdateNotificationPanelComponent implements OnInit, OnDestroy {
             ? 'SETTINGS.APP_UPDATE_DOWNLOADED'
             : 'SETTINGS.APP_UPDATE_AVAILABLE'
     );
+    readonly primaryActionLabelKey = computed(() =>
+        this.status()?.supportedSelfUpdate === false
+            ? 'SETTINGS.APP_UPDATE_OPEN_RELEASE'
+            : 'SETTINGS.APP_UPDATE_DOWNLOAD'
+    );
+    readonly primaryActionIcon = computed(() =>
+        this.status()?.supportedSelfUpdate === false
+            ? 'open_in_new'
+            : 'download'
+    );
     readonly isVisible = computed(() => {
         const status = this.status();