feat(web): AI 工作台意图规划与规划思考模型

- 新增 workbenchAiIntentPlannerModel，基于 LLM function_call 解析建单/草稿/提交意图，区分 model 与 rule_fallback 来源
- 新增 workbenchAiPlanningThinkingModel 合并规划思考事件流，按 eventId 去重合并
- application gate/preview 模型接入意图规划，usePersonalWorkbenchAiMode/useWorkbenchAiStewardFlow/useWorkbenchAiActionRouter 链路适配，支持上下文提交
- steward 服务与 stewardPlanModel 适配新动作结构，receipt-folder-view 微调样式
- 新增 intent-planner-model/application-context-submit/steward-actions-service 测试，更新 gate-model/action-router/plan-message-copy/fast-preview 测试

web/tests/workbench-ai-application-context-submit.test.mjs

@@ -0,0 +1,166 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+
+import { useWorkbenchAiApplicationPreviewFlow } from '../src/composables/workbenchAiMode/useWorkbenchAiApplicationPreviewFlow.js'
+
+function createRef(value) {
+  return { value }
+}
+
+function createInlineMessage(role, content, options = {}) {
+  return {
+    id: options.id || `msg-${Math.random().toString(16).slice(2)}`,
+    role,
+    content,
+    text: content,
+    paragraphs: String(content || '').split(/\n+/).filter(Boolean),
+    pending: Boolean(options.pending),
+    ...options
+  }
+}
+
+function buildApplicationPreviewFlowHarness(messages) {
+  const conversationMessages = createRef(messages)
+  const applicationSubmitConfirmOpen = createRef(false)
+  const applicationSubmitConfirmContext = createRef(null)
+  const persisted = createRef(0)
+
+  const flow = useWorkbenchAiApplicationPreviewFlow({
+    activateInlineConversation: () => {},
+    applicationPreviewEditor: createRef({}),
+    applicationSubmitConfirmContext,
+    applicationSubmitConfirmOpen,
+    assistantDraft: createRef(''),
+    cancelApplicationPreviewEditor: () => {},
+    clearAiModeFiles: () => {},
+    closeWorkbenchDatePicker: () => {},
+    commitApplicationPreviewEditor: async () => true,
+    conversationId: createRef('conversation-context-submit'),
+    conversationMessages,
+    conversationStarted: createRef(true),
+    createInlineMessage,
+    currentUser: createRef({ username: 'zhangsan@example.com', name: '张三' }),
+    handleApplicationPreviewEditorKeydown: () => {},
+    inlineConversationAutoScrollPinned: createRef(true),
+    isApplicationPreviewEditing: createRef(false),
+    openApplicationPreviewEditor: () => {},
+    persistCurrentConversation: () => { persisted.value += 1 },
+    pushInlineApplicationActionUserMessage: (text) => {
+      conversationMessages.value.push(createInlineMessage('user', text))
+    },
+    pushInlineUserMessage: (text) => {
+      conversationMessages.value.push(createInlineMessage('user', text))
+    },
+    refreshApplicationPreviewEstimate: async (preview) => preview,
+    removeWorkbenchDateTag: () => {},
+    replaceInlineMessage: (id, nextMessage) => {
+      const index = conversationMessages.value.findIndex((item) => item.id === id)
+      if (index >= 0) {
+        conversationMessages.value.splice(index, 1, nextMessage)
+      } else {
+        conversationMessages.value.push(nextMessage)
+      }
+    },
+    resolveApplicationPreviewEditorDateMax: () => '',
+    resolveApplicationPreviewEditorDateMin: () => '',
+    resolveApplicationPreviewEditorControl: () => null,
+    resolveApplicationPreviewEditorOptions: () => [],
+    resolveInlineThinkingEvents: (message) => message?.stewardPlan?.thinkingEvents || [],
+    resolveLatestInlineUserPrompt: () => '2026-02-20 至 2026-02-23，去上海出差，交通火车，保存草稿',
+    scrollInlineConversationToBottom: () => {},
+    sending: createRef(false),
+    toast: () => {}
+  })
+
+  return {
+    applicationSubmitConfirmOpen,
+    conversationMessages,
+    flow,
+    persisted
+  }
+}
+
+test('workbench saved application draft can be submitted by contextual text without re-planning', async () => {
+  const originalFetch = globalThis.fetch
+  const requests = []
+  globalThis.fetch = async (url, options = {}) => {
+    const normalizedUrl = String(url)
+    if (normalizedUrl.includes('/reimbursements/claims')) {
+      return {
+        ok: true,
+        async json() {
+          return { items: [] }
+        }
+      }
+    }
+    if (normalizedUrl.includes('/reimbursements/application-preview-action')) {
+      const body = JSON.parse(String(options.body || '{}'))
+      requests.push({ url: normalizedUrl, body })
+      return {
+        ok: true,
+        async json() {
+          return {
+            status: 'succeeded',
+            result: {
+              draft_payload: {
+                claim_id: 'claim-saved-draft',
+                claim_no: 'A20260220',
+                status: 'submitted',
+                approval_stage: '直属领导审批'
+              }
+            }
+          }
+        }
+      }
+    }
+    throw new Error(`unexpected request: ${normalizedUrl}`)
+  }
+
+  try {
+    const previewMessage = createInlineMessage('assistant', '申请核对表', {
+      id: 'application-preview-1',
+      applicationPreview: {
+        readyToSubmit: true,
+        fields: {
+          applicationType: '差旅费用申请',
+          time: '2026-02-20 至 2026-02-23',
+          location: '上海',
+          reason: '辅助国网仿生产服务器部署',
+          days: '4天',
+          transportMode: '火车',
+          amount: '1200元'
+        },
+        missingFields: [],
+        validationIssues: []
+      },
+      draftPayload: {
+        claim_id: 'claim-saved-draft',
+        claim_no: 'A20260220',
+        status: 'draft'
+      }
+    })
+    const harness = buildApplicationPreviewFlowHarness([
+      createInlineMessage('user', '2026-02-20 至 2026-02-23，去上海出差，交通火车，保存草稿'),
+      previewMessage,
+      createInlineMessage('assistant', '### 申请草稿已保存', {
+        draftPayload: previewMessage.draftPayload
+      })
+    ])
+
+    const handled = harness.flow.handleInlineApplicationPreviewTextAction(
+      '提交这个单据',
+      createRef(false)
+    )
+    assert.equal(handled, true)
+    await new Promise((resolve) => setTimeout(resolve, 0))
+
+    assert.equal(harness.applicationSubmitConfirmOpen.value, false)
+    assert.equal(requests.length, 1)
+    assert.equal(requests[0].body.context_json.application_edit_claim_id, 'claim-saved-draft')
+    assert.equal(requests[0].body.context_json.application_edit_mode, true)
+    assert.match(harness.conversationMessages.value.at(-1).content, /申请单据已生成/)
+    assert.ok(harness.persisted.value > 0)
+  } finally {
+    globalThis.fetch = originalFetch
+  }
+})