fix(conversations): 优化列表时间显示

frontend/app/javascript/dashboard/components/ui/TimeAgo.vue

@@ -13,6 +13,8 @@ const chineseShortTimestamp = timestamp => {
     .replace(/^(\d+)y$/, '$1年');
 };
 
+export { chineseShortTimestamp };
+
 import { zhCN } from 'date-fns/locale';
 import {
   dynamicTime,
@@ -151,7 +153,7 @@ export default {
       content: tooltipText,
       delay: { show: 1000, hide: 0 },
     }"
-    class="ml-auto leading-4 text-xxs text-n-slate-10 hover:text-n-slate-11"
+    class="ml-auto whitespace-nowrap leading-4 text-xxs text-n-slate-10 hover:text-n-slate-11"
   >
     <span>{{ `${createdAtTime} • ${lastActivityTime}` }}</span>
   </div>

frontend/app/javascript/dashboard/components/ui/specs/TimeAgo.spec.js

@@ -0,0 +1,15 @@
+import { chineseShortTimestamp } from '../TimeAgo.vue';
+
+describe('chineseShortTimestamp', () => {
+  it.each([
+    ['now', '刚刚'],
+    ['1m', '1分钟'],
+    ['1h', '1小时'],
+    ['12h', '12小时'],
+    ['1d', '1天'],
+    ['2mo', '2个月'],
+    ['1y', '1年'],
+  ])('formats %s as %s', (timestamp, expected) => {
+    expect(chineseShortTimestamp(timestamp)).toBe(expected);
+  });
+});