fix: the backup test result says its count through plural(), and the panel tests read the size and folder field as shown

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/src/lib/components/admin/BackupPanel.test.ts

@@ -71,7 +71,7 @@ describe('BackupPanel', () => {
     expect(verdict()).toMatch(/^ ?Backed up /);
     expect(verdict()).toMatch(/Next backup /);
     const runs = screen.getByRole('list', { name: /latest backups/i });
-    expect(runs.textContent).toMatch(/Scheduled · database\/minstrel-20261102T030000Z\.tar · 12 MB/);
+    expect(runs.textContent).toMatch(/Scheduled · database\/minstrel-20261102T030000Z\.tar · 12\.0 MB/);
     expect(runs.textContent).toMatch(/Saved/);
   });
 
@@ -181,7 +181,7 @@ describe('BackupPanel', () => {
 
   test('the folder destination asks for a path, not a bucket', async () => {
     await renderPanel(status({ config: { ...base.config, destination: 'folder', folder: '/backups' } }));
-    expect(screen.getByLabelText(/^folder$/i)).toHaveProperty('value', '/backups');
+    expect(screen.getByRole('textbox', { name: /^folder$/i })).toHaveProperty('value', '/backups');
     expect(screen.queryByLabelText(/^bucket$/i)).toBeNull();
   });
 });

web/src/lib/components/admin/BackupSettings.svelte

@@ -13,6 +13,7 @@
   import SettingsGroup from '#lib/components/settings/SettingsGroup.svelte';
   import SettingRow from '#lib/components/settings/SettingRow.svelte';
   import Segmented from '#lib/components/settings/Segmented.svelte';
+  import { plural } from '#lib/utils/plural.js';
   import { hourLabel, when } from './backupTime.js';
 
   // Where the nightly backup goes and when. The form keeps its own drafts,
@@ -175,7 +176,7 @@
         {#if check.backups === 0}
           No backups there yet.
         {:else}
-          {check.backups} {check.backups === 1 ? 'backup' : 'backups'} there, the newest from {when(check.latest!)}.
+          {plural(check.backups, 'backup', 'backups')} there, the newest from {when(check.latest!)}.
         {/if}
       </p>
     {/if}