feat(workspace): 增加工作活动日报引擎

apps/web/lib/work-activity.test.ts

@@ -0,0 +1,33 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+
+import type { WorkActivity } from './work-activity';
+import { mergeWorkActivities } from './work-activity';
+
+function activity(id: string, summary: string): WorkActivity {
+  return {
+    id,
+    actorId: '张三',
+    date: '2026-06-26',
+    occurredAt: `2026-06-26T0${id.length}:00:00.000Z`,
+    sourceType: 'dev_task',
+    sourceId: id,
+    action: 'dev_task_started',
+    category: 'progress',
+    title: summary,
+    summary,
+  };
+}
+
+test('mergeWorkActivities preserves remote records and appends local records', () => {
+  const merged = mergeWorkActivities([activity('act-1', '远端记录')], [activity('act-2', '本地新增')]);
+
+  assert.deepEqual(merged.map((item) => item.id), ['act-1', 'act-2']);
+});
+
+test('mergeWorkActivities lets newer local records replace the same id', () => {
+  const merged = mergeWorkActivities([activity('act-1', '远端旧记录')], [activity('act-1', '本地新记录')]);
+
+  assert.equal(merged.length, 1);
+  assert.equal(merged[0].summary, '本地新记录');
+});