feat(web): 报销单新增关联申请单门控与草稿检测流程

- 新增 travelReimbursementAssociationGateModel，查询可关联申请单/草稿报销单并生成跳过/选择/单独新建动作，区分差旅费与业务招待费类型
- travelReimbursementApplicationLinkModel 补充 buildLinkedApplicationReferenceIndex/buildRequiredApplicationActions 等关联构建逻辑
- useTravelReimbursementSuggestedActions 接入 select_required_application/skip 系列动作，'我要报销'入口改为先走关联门控
- useWorkbenchAiActionRouter 新增 SKIP_REQUIRED_APPLICATION_LINK/SKIP_REIMBURSEMENT_DRAFT_CHECK 动作分发
- useWorkbenchAiExpenseFlow 暴露 startAiReimbursementAssociationGate，stewardPlanModel 待处理流程适配
- 新增 workbench-ai-action-router、workbench-ai-reimbursement-association-gate 测试并更新 guided-flow、steward-plan 测试

web/tests/workbench-ai-action-router.test.mjs

@@ -0,0 +1,138 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+
+import { buildInlineApplicationPreview } from '../src/composables/workbenchAiMode/workbenchAiApplicationPreviewModel.js'
+import { buildStewardSuggestedActions } from '../src/views/scripts/stewardPlanModel.js'
+import { useWorkbenchAiActionRouter } from '../src/composables/workbenchAiMode/useWorkbenchAiActionRouter.js'
+
+test('workbench steward application confirmation opens inline application preview directly', () => {
+  const [action] = buildStewardSuggestedActions({
+    plan_id: 'steward-plan-ready-application',
+    plan_status: 'ready',
+    tasks: [
+      {
+        task_id: 'task-application-beijing',
+        task_type: 'expense_application',
+        title: '费用申请 2026-06-23 北京',
+        summary: '明天前往北京出差3天，支撑客户现场实施。',
+        assigned_agent: 'application_assistant',
+        ontology_fields: {
+          expense_type: 'travel',
+          time_range: '2026-06-23 至 2026-06-25',
+          location: '北京',
+          days: '3天',
+          reason: '支撑客户现场实施'
+        },
+        missing_fields: ['transport_mode']
+      }
+    ],
+    confirmation_groups: [
+      {
+        confirmation_id: 'confirm-application-beijing',
+        action_type: 'confirm_create_application',
+        target_task_id: 'task-application-beijing'
+      }
+    ]
+  })
+
+  let previewPayload = null
+  let fallbackConversationStarted = false
+  const router = useWorkbenchAiActionRouter({
+    aiExpenseDraft: { value: null },
+    applicationFlow: {
+      isInlineSuggestedActionDisabled: () => false,
+      executeInlineApplicationPreviewAction: () => {}
+    },
+    assistantDraft: { value: '' },
+    attachmentFlow: {
+      confirmAiAttachmentAssociation: () => {}
+    },
+    emit: () => {},
+    expenseFlow: {
+      linkAiExpenseApplication: () => {},
+      pushInlineExpenseSceneSelectionPrompt: () => {},
+      startAiApplicationPreviewFromAction: (payload) => {
+        previewPayload = payload
+      },
+      startAiExpenseDraft: () => {}
+    },
+    focusAiModeInput: () => {},
+    hasInlineAttachmentOcrDetails: () => false,
+    resolveLatestInlineUserPrompt: () => '',
+    selectedFiles: { value: [] },
+    startInlineConversation: () => {
+      fallbackConversationStarted = true
+    },
+    toast: () => {},
+    toggleInlineAttachmentOcrDetails: () => {}
+  })
+
+  router.handleInlineSuggestedAction(action)
+
+  assert.equal(fallbackConversationStarted, false)
+  assert.equal(previewPayload?.flow_id, 'travel_application')
+  assert.equal(previewPayload?.expense_type, 'travel')
+  assert.equal(previewPayload?.expense_type_label, '差旅费')
+  assert.match(previewPayload?.carry_text || '', /支撑客户现场实施/)
+
+  const preview = buildInlineApplicationPreview(previewPayload.expense_type_label, previewPayload.carry_text, {
+    name: '测试用户',
+    departmentName: '交付部',
+    position: '实施顾问',
+    managerName: '张经理',
+    grade: 'P5'
+  })
+  assert.equal(preview.fields.time, '2026-06-23 至 2026-06-25')
+  assert.equal(preview.fields.location, '北京')
+  assert.equal(preview.fields.reason, '支撑客户现场实施')
+  assert.equal(preview.fields.days, '3天')
+  assert.equal(preview.fields.transportMode, '')
+})
+
+test('workbench reimbursement skip link action opens new reimbursement flow', () => {
+  let sceneSelectionPayload = null
+  let fallbackConversationStarted = false
+  const router = useWorkbenchAiActionRouter({
+    aiExpenseDraft: { value: null },
+    applicationFlow: {
+      isInlineSuggestedActionDisabled: () => false,
+      executeInlineApplicationPreviewAction: () => {}
+    },
+    assistantDraft: { value: '' },
+    attachmentFlow: {
+      confirmAiAttachmentAssociation: () => {}
+    },
+    emit: () => {},
+    expenseFlow: {
+      linkAiExpenseApplication: () => {},
+      pushInlineExpenseSceneSelectionPrompt: (sourceText, label) => {
+        sceneSelectionPayload = { sourceText, label }
+      },
+      startAiApplicationPreviewFromAction: () => {},
+      startAiExpenseDraft: () => {}
+    },
+    focusAiModeInput: () => {},
+    hasInlineAttachmentOcrDetails: () => false,
+    resolveLatestInlineUserPrompt: () => '',
+    selectedFiles: { value: [] },
+    startInlineConversation: () => {
+      fallbackConversationStarted = true
+    },
+    toast: () => {},
+    toggleInlineAttachmentOcrDetails: () => {}
+  })
+
+  router.handleInlineSuggestedAction({
+    label: '不关联，单独新建报销单',
+    action_type: 'skip_required_application_link',
+    payload: {
+      original_message: '我要报销'
+    }
+  })
+
+  assert.equal(fallbackConversationStarted, false)
+  assert.deepEqual(sceneSelectionPayload, {
+    sourceText: '我要报销',
+    label: '不关联，单独新建报销单'
+  })
+})