fix(desktop): de-duplicate localhost url in output card (hide subtitle when == title)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

desktop/src/components/chat/AssistantOutputTargetCard.test.tsx

@@ -74,10 +74,10 @@ describe('AssistantOutputTargetCard', () => {
     expect(screen.getByText('docs/readme.md')).toBeInTheDocument()
   })
 
-  it('renders a localhost target title + Localhost badge', () => {
+  it('renders a localhost target title + Localhost badge (URL not duplicated)', () => {
     render(<AssistantOutputTargetCard target={localhostTarget} sessionId="s1" />)
-    // Title + subtitle both fall back to href, so it appears twice.
-    expect(screen.getAllByText('http://localhost:5173/').length).toBeGreaterThan(0)
+    // subtitle equals the title for localhost, so the URL renders exactly once.
+    expect(screen.getAllByText('http://localhost:5173/')).toHaveLength(1)
     expect(screen.getByText('assistantOutputs.kind.localhost')).toBeInTheDocument()
   })
 

desktop/src/components/chat/AssistantOutputTargetCard.tsx

@@ -34,6 +34,7 @@ export function AssistantOutputTargetCard({ target, sessionId, workDir }: Props)
         ? t('assistantOutputs.kind.markdown')
         : t('assistantOutputs.kind.image')
   const subtitle = target.subtitle ?? target.normalizedPath ?? target.href
+  const showSubtitle = subtitle !== target.title
 
   const handleOpen = useCallback((event: ReactMouseEvent<HTMLButtonElement>) => {
     event.stopPropagation()
@@ -99,9 +100,11 @@ export function AssistantOutputTargetCard({ target, sessionId, workDir }: Props)
             {badge}
           </span>
         </div>
-        <div className="mt-1 truncate text-xs text-[var(--color-text-tertiary)]" title={subtitle}>
-          {subtitle}
-        </div>
+        {showSubtitle && (
+          <div className="mt-1 truncate text-xs text-[var(--color-text-tertiary)]" title={subtitle}>
+            {subtitle}
+          </div>
+        )}
       </div>
 
       <div className="flex shrink-0 items-center gap-1.5">