feat: when no slot an album gives one recording is its own, every copy is removed and the album fetched again (M498)

Shnabubula's whole album, one 45-minute file, was filed as both Fading Light
and Looking for Answers. Neither slot fits, so wrongSlots had nothing to keep
and held the group. Every copy now goes when each is clearly another song's;
a copy near its slot still holds the group.

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

web/src/routes/collection/duplicates/+page.svelte

@@ -248,6 +248,11 @@
                 {item.details.artist}: {(item.details.titles ?? []).join(' and ')} are different versions,
                 not duplicates. Both kept.
               </p>
+            {:else if item.action === 'duplicate_wrong_file' && !item.details.kept_title}
+              <p class="text-text-primary">
+                {item.details.artist}: one recording was filed as {removed.map((r) => r.title).join(' and ')},
+                and it is none of them. Removed; the album will be fetched again.
+              </p>
             {:else if item.action === 'duplicate_wrong_file'}
               <p class="text-text-primary">
                 {item.details.artist}: the recording of {item.details.kept_title} was also filed as

web/src/routes/collection/duplicates/duplicates.test.ts

@@ -372,6 +372,18 @@ describe('admin duplicates', () => {
             kept_title: 'Void',
             removed: [{ track_id: 't-9', file_path: '/data/Music/Savant/Void/17 - Reach.m4a', title: 'Reach' }]
           }
+        },
+        {
+          id: 'a-4',
+          action: 'duplicate_wrong_file',
+          created_at: ago(HOUR),
+          details: {
+            artist: 'Shnabubula',
+            removed: [
+              { track_id: 't-5', file_path: '/data/Music/Shnabubula/05 - Fading Light.mp3', title: 'Fading Light' },
+              { track_id: 't-10', file_path: '/data/Music/Shnabubula/10 - Looking for Answers.mp3', title: 'Looking for Answers' }
+            ]
+          }
         }
       ]);
       await fireEvent.click(screen.getByRole('tab', { name: /resolved automatically/i }));
@@ -381,6 +393,9 @@ describe('admin duplicates', () => {
         'Savant: the recording of Void was also filed as Reach. Removed from there; the album will be fetched again.'
       );
       expect(items[1]).toContain('/data/Music/Savant/Void/17 - Reach.m4a');
+      expect(items[2]).toContain(
+        'Shnabubula: one recording was filed as Fading Light and Looking for Answers, and it is none of them. Removed; the album will be fetched again.'
+      );
     });
   });