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/src/utils/expenseApplicationPreview.js

@@ -292,8 +292,20 @@ export function normalizeApplicationPreview(preview = {}) {
     ...resolveApplicationValidationIssues(fields),
     ...resolveApplicationSourceValidationIssues(preview?.sourceText, fields, preview)
   ]
+  const editableFields = Array.isArray(preview?.editableFields)
+    ? preview.editableFields
+    : Array.isArray(preview?.editable_fields)
+      ? preview.editable_fields
+      : null
   return {
     ...preview,
+    ...(editableFields
+      ? {
+          editableFields: editableFields
+            .map((field) => String(field || '').trim())
+            .filter(Boolean)
+        }
+      : {}),
     fields,
     missingFields,
     validationIssues,
@@ -301,6 +313,37 @@ export function normalizeApplicationPreview(preview = {}) {
   }
 }
 
+function resolveApplicationPreviewEditableFields(preview = {}) {
+  const source = Array.isArray(preview?.editableFields)
+    ? preview.editableFields
+    : Array.isArray(preview?.editable_fields)
+      ? preview.editable_fields
+      : null
+  if (!Array.isArray(source)) {
+    return null
+  }
+  const fields = new Set(
+    source
+      .map((field) => String(field || '').trim())
+      .filter(Boolean)
+  )
+  if (fields.has('time')) {
+    fields.add('time_return')
+  }
+  return fields
+}
+
+function isApplicationPreviewFieldEditable(preview = {}, item = {}, rowKey = '') {
+  if (item.editable === false) {
+    return false
+  }
+  const editableFields = resolveApplicationPreviewEditableFields(preview)
+  if (!editableFields) {
+    return true
+  }
+  return editableFields.has(rowKey)
+}
+
 export function applyApplicationBusinessTimeContext(preview = {}, businessTimeContext = null) {
   if (!businessTimeContext || typeof businessTimeContext !== 'object') {
     return normalizeApplicationPreview(preview)
@@ -394,7 +437,7 @@ export function buildApplicationPreviewRows(preview = {}) {
           ...item,
           label: '出发时间',
           value: tripDates.startDate || '待补充',
-          editable: item.editable !== false,
+          editable: isApplicationPreviewFieldEditable(normalized, item, 'time'),
           highlight: Boolean(item.highlight),
           missing
         },
@@ -402,7 +445,7 @@ export function buildApplicationPreviewRows(preview = {}) {
           key: 'time_return',
           label: '返回时间',
           value: tripDates.endDate || '待补充',
-          editable: item.editable !== false,
+          editable: isApplicationPreviewFieldEditable(normalized, item, 'time_return'),
           highlight: Boolean(item.highlight),
           missing
         }
@@ -415,7 +458,7 @@ export function buildApplicationPreviewRows(preview = {}) {
       ...item,
       label: resolveApplicationFieldLabel(item, fields),
       value,
-      editable: item.editable !== false,
+      editable: isApplicationPreviewFieldEditable(normalized, item, item.key),
       highlight: Boolean(item.highlight),
       missing: item.required !== false && !isApplicationPreviewValueProvided(rawValue)
     }]
@@ -484,6 +527,10 @@ export function buildApplicationTemplatePreview(currentUser = {}) {
 export function buildLocalApplicationPreviewMessage(preview) {
   const normalized = normalizeApplicationPreview(preview)
   const modelReviewStatus = String(normalized.modelReviewStatus || '').trim()
+  const editMode = Boolean(normalized.applicationEditMode || normalized.application_edit_mode)
+  if (editMode) {
+    return '我已载入原申请信息。请只修改事由、时间、地点和出行方式；职级、负责人、标准和费用会按规则带入或重新测算。'
+  }
   return [
     modelReviewStatus === 'completed'
       ? '我已完成模型复核，并整理成下方表格。请核查识别结果；点击对应行即可直接编辑。'