test: 建立桌面端自动化回归测试体系并完善跨平台 CI

(cherry picked from commit 74267ae2f63f8256c3da84b04f5b330e6e9d4c67)

tests/unit/message-pagination.test.ts

@@ -0,0 +1,23 @@
+import { describe, expect, it } from 'vitest'
+import type { Message } from '../../src/shared/types'
+import { mergeMessagePages } from '../../src/renderer/src/utils/message-pages'
+
+const makeMessage = (id: string, createTime: number): Message => ({
+  id,
+  from: 'user',
+  type: '文本',
+  datetime: new Date(createTime * 1000).toISOString(),
+  content: id,
+  isSender: false,
+  createTime
+})
+
+describe('message pagination', () => {
+  it('sorts older pages and removes overlapping records', () => {
+    const merged = mergeMessagePages(
+      [makeMessage('oldest', 1), makeMessage('overlap', 2)],
+      [makeMessage('overlap', 2), makeMessage('latest', 3)]
+    )
+    expect(merged.map((message) => message.id)).toEqual(['oldest', 'overlap', 'latest'])
+  })
+})