feat(web): AI 工作台多 task 串行推进与会话适配

- useWorkbenchAiApplicationPreviewFlow/useWorkbenchAiActionRouter/useWorkbenchAiCommandIntents 支持 task1 完成后自动推进 task2，确认按钮直接拉起申请预览，草稿/提交成功后继续推进下一 task
- workbenchAiIntentPlannerModel/workbenchAiMessageModel/workbenchAiCommandIntentModel 适配多 task 意图规划与消息结构
- aiApplicationPreviewActions/aiApplicationPrecheckModel/aiExpenseDraftModel/aiWorkbenchConversationStore 草稿与会话存储适配
- PersonalWorkbenchAiMode 与样式适配，更新 preview-actions/expense-draft/conversation-store/fast-preview/action-router/command-intent/intent-planner 测试

web/tests/ai-expense-draft-model.test.mjs

@@ -3,6 +3,7 @@ import test from 'node:test'
 
 import {
   applyAiExpenseAnswer,
+  buildAiExpenseDraftPrefillValues,
   buildAiExpenseStepPrompt,
   buildAiExpenseSummary,
   createAiExpenseDraft,
@@ -71,3 +72,41 @@ test('summary lists every filled field and the linked application', () => {
   assert.match(summary, /AP-202606-001/)
   assert.match(summary, /85元/)
 })
+
+test('buildAiExpenseDraftPrefillValues maps task ontology fields onto draft fields', () => {
+  const values = buildAiExpenseDraftPrefillValues({
+    expense_type: 'meal',
+    amount: '2000元',
+    time_range: '昨天',
+    reason: '客户招待',
+    location: '上海',
+    unrelated_field: 'ignore me'
+  })
+  assert.equal(values.amount, '2000元')
+  assert.equal(values.time_range, '昨天')
+  assert.equal(values.reason, '客户招待')
+  assert.equal(values.location, '上海')
+  assert.equal(values.unrelated_field, undefined)
+})
+
+test('createAiExpenseDraft with prefillValues skips already filled steps', () => {
+  const draft = createAiExpenseDraft('meal', '业务招待费', {
+    amount: '2000元',
+    reason: '客户招待'
+  })
+  // reason 已填,跳到下一个未填字段 time_range
+  assert.equal(draft.values.amount, '2000元')
+  assert.equal(draft.values.reason, '客户招待')
+  assert.equal(draft.stepKey, 'time_range')
+})
+
+test('createAiExpenseDraft with all prefillValues lands on summary', () => {
+  const draft = createAiExpenseDraft('meal', '业务招待费', {
+    reason: '客户招待',
+    time_range: '昨天',
+    location: '上海',
+    amount: '2000元',
+    attachments: '稍后上传'
+  })
+  assert.ok(isAiExpenseDraftComplete(draft))
+})