feat(desktop): use contextual user-message timestamps

packages/ui/src/__tests__/chat-turn-answer-identity.test.tsx

@@ -229,6 +229,27 @@ test('uses human conversation context instead of raw ids in action names', async
   );
 });
 
+test('keeps Astryx auto formatting live for user-message timestamps', async (context) => {
+  const now = Date.UTC(2026, 7, 27, 12);
+  context.mock.timers.enable({ apis: ['Date', 'setInterval'], now });
+  const { container, root } = domRoot();
+  const twoHoursAgo = now - 2 * 60 * 60 * 1_000;
+  const turn = {
+    ...turnWith([{ ...ANSWER, live: false }]),
+    user: { id: 'ask', role: 'user' as const, text: 'ask', ts: twoHoursAgo },
+  };
+
+  await renderTurn(root, turn);
+
+  const timestamp = container.querySelector('.maka-message-time-inline time');
+  assert.ok(timestamp, 'Astryx Timestamp renders the semantic time element');
+  assert.match(timestamp.textContent ?? '', /2 hours ago/);
+  assert.equal(timestamp.getAttribute('tabindex'), '0', 'the absolute-time hover card is keyboard reachable');
+
+  await act(() => context.mock.timers.tick(60 * 60 * 1_000));
+  assert.match(timestamp.textContent ?? '', /3 hours ago/);
+});
+
 /**
  * The live handoff announces itself exactly once, when the answer enters its
  * settled phase. A bubble replayed from history mounts already past the

packages/ui/src/chat-turn.tsx

@@ -193,7 +193,7 @@ const UserMessageBody = memo(function UserMessageBody(props: {
           /* `value` takes ms directly: Timestamp's own parseValue reads
              anything past 1e12 as milliseconds (2001-09-09 onward), and a
              chat message never predates that. */
-          (<Timestamp className="maka-message-time-inline" value={props.ts} format="time" />)
+          (<Timestamp className="maka-message-time-inline" value={props.ts} format="auto" isLive />)
         ) : undefined
       }
       footer={