feat(expenses): add authoritative pre-review workflow

web/tests/expense-case-timeline.test.mjs

@@ -100,6 +100,48 @@ test('expense case timeline gives returned events an actionable reason', () => {
   assert.equal(timeline.events[0].summary, '住宿票据缺少入住人信息')
 })
 
+test('expense case timeline explains receipt collection, association and AI pre-review', () => {
+  const timeline = buildExpenseCaseTimelineViewModel({
+    events: [
+      {
+        id: 'receipt-1',
+        event_type: 'receipt_received',
+        actor_id: 'employee@example.com',
+        occurred_at: '2026-07-13T01:00:00Z',
+        payload_json: { file_name: '上海出差高铁票.pdf' }
+      },
+      {
+        id: 'association-1',
+        event_type: 'attachment_associated',
+        actor_id: 'employee@example.com',
+        occurred_at: '2026-07-13T01:01:00Z',
+        payload_json: { claim_no: 'BX-20260713-001' }
+      },
+      {
+        id: 'pre-review-1',
+        event_type: 'claim_pre_review_completed',
+        actor_id: 'employee@example.com',
+        occurred_at: '2026-07-13T01:02:00Z',
+        payload_json: {
+          passed: false,
+          blocking_risk_count: 1,
+          message: '自动检测发现 1 条重大风险，请逐条填写原因后再提交审批。'
+        }
+      }
+    ]
+  })
+
+  assert.deepEqual(timeline.events.map((event) => event.label), [
+    '票据已进入费用事件',
+    '票据已归集到报销草稿',
+    '报销单 AI 预审已完成'
+  ])
+  assert.match(timeline.events[0].summary, /上海出差高铁票\.pdf/)
+  assert.match(timeline.events[1].summary, /BX-20260713-001/)
+  assert.equal(timeline.events[2].tone, 'warning')
+  assert.match(timeline.events[2].summary, /1 条重大风险/)
+})
+
 test('expense case timeline explains a historical import without pretending it is a business action', () => {
   const timeline = buildExpenseCaseTimelineViewModel({
     events: [