feat: prepare Zhinian desktop client for pilot release

tests/unit/chat-message-utils.test.ts

@@ -0,0 +1,20 @@
+import { describe, expect, it } from 'vitest';
+import { extractText } from '@/pages/Chat/message-utils';
+
+describe('chat message display cleanup', () => {
+  it('removes Feishu channel metadata prefix but keeps user text', () => {
+    const content = [
+      'System: [2026-04-27 11:20:03 GMT+8] Feishu[default] DM | ou_256bec6880a8c77271bc610c5e42fe89 [msg:om_x100b51d910e2e0f0c3b6494c6bf8a9c]',
+      '',
+      '喂',
+    ].join('\n');
+
+    expect(extractText({ role: 'user', content })).toBe('喂');
+  });
+
+  it('removes pure Feishu channel metadata from user display text', () => {
+    const content = 'System: [2026-04-27 11:20:03 GMT+8] Feishu[default] DM | ou_256bec6880a8c77271bc610c5e42fe89 [msg:om_x100b51d910e2e0f0c3b6494c6bf8a9c]';
+
+    expect(extractText({ role: 'user', content })).toBe('');
+  });
+});