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/src/views/scripts/stewardPlanModel.js

@@ -28,6 +28,13 @@ const AGENT_LABELS = {
   expense: '报销助手'
 }
 
+const EXECUTABLE_STEWARD_ACTION_TYPES = new Set([
+  'save_application_draft',
+  'submit_application',
+  'create_reimbursement_draft',
+  'associate_attachments'
+])
+
 export function buildStewardPlanRequest({
   rawText = '',
   files = [],
@@ -102,10 +109,12 @@ export function normalizeStewardPlan(rawPlan = {}, options = {}) {
             summary: String(item.summary || ''),
             status: String(item.status || ''),
             confidence: Number(item.confidence || 0),
+            requestedAction: String(item.requested_action || item.requestedAction || ''),
             ontologyFields: item.ontology_fields || item.ontologyFields || {},
             missingFields,
             missingFieldItems: buildStewardFieldItems(missingFields, taskType),
-            confirmationRequired: item.confirmation_required ?? item.confirmationRequired ?? true
+            confirmationRequired: item.confirmation_required ?? item.confirmationRequired ?? true,
+            actionSteps: normalizeStewardActionSteps(item.action_steps || item.actionSteps)
           }
         })
       : [],
@@ -137,6 +146,26 @@ export function normalizeStewardPlan(rawPlan = {}, options = {}) {
   }
 }
 
+function normalizeStewardActionSteps(rawSteps = []) {
+  if (!Array.isArray(rawSteps)) {
+    return []
+  }
+  return rawSteps
+    .map((step) => ({
+      step_id: String(step?.step_id || step?.stepId || ''),
+      action_type: String(step?.action_type || step?.actionType || ''),
+      label: String(step?.label || ''),
+      target_task_id: String(step?.target_task_id || step?.targetTaskId || ''),
+      status: String(step?.status || 'planned'),
+      requires_confirmation: Boolean(step?.requires_confirmation ?? step?.requiresConfirmation),
+      depends_on: Array.isArray(step?.depends_on || step?.dependsOn)
+        ? step.depends_on || step.dependsOn
+        : [],
+      payload: step?.payload && typeof step.payload === 'object' ? step.payload : {}
+    }))
+    .filter((step) => step.step_id && step.action_type)
+}
+
 export function buildStewardPlanMessageText(plan) {
   const normalized = normalizeStewardPlan(plan)
   if (isOffTopicPlan(normalized)) {
@@ -353,6 +382,7 @@ export function buildStewardSuggestedActions(plan) {
   const targetSessionType = actionType === 'confirm_create_application'
     ? SESSION_TYPE_APPLICATION
     : SESSION_TYPE_EXPENSE
+  const executableStep = resolveExecutableStewardActionStep(task)
   return [
     {
       label: buildNextActionLabel(actionType, task),
@@ -372,6 +402,7 @@ export function buildStewardSuggestedActions(plan) {
         steward_confirmation_id: String(action.confirmation_id || action.confirmationId || ''),
         steward_plan_id: normalized.planId,
         steward_next_task_id: task?.taskId || '',
+        ...buildStewardExecuteActionPayload(executableStep, task),
         steward_current_task: buildStewardTaskPayload(task),
         steward_remaining_task_count: normalized.tasks.filter((item) => item.taskId !== task?.taskId).length,
         steward_remaining_tasks: buildRemainingTaskPayload(normalized, task?.taskId)
@@ -380,6 +411,26 @@ export function buildStewardSuggestedActions(plan) {
   ]
 }
 
+function resolveExecutableStewardActionStep(task = null) {
+  const steps = Array.isArray(task?.actionSteps || task?.action_steps)
+    ? task.actionSteps || task.action_steps
+    : []
+  return [...steps].reverse().find((step) => EXECUTABLE_STEWARD_ACTION_TYPES.has(String(step.action_type || step.actionType || ''))) || null
+}
+
+function buildStewardExecuteActionPayload(step, task) {
+  if (!step) {
+    return {}
+  }
+  return {
+    steward_execute_action: true,
+    steward_action_type: String(step.action_type || step.actionType || ''),
+    steward_action_step: step,
+    steward_action_requires_confirmation: Boolean(step.requires_confirmation ?? step.requiresConfirmation),
+    steward_action_task_id: task?.taskId || task?.task_id || ''
+  }
+}
+
 function normalizePendingFlowConfirmation(rawPlan = {}) {
   const rawPending = rawPlan.pending_flow_confirmation || rawPlan.pendingFlowConfirmation || {}
   const rawCandidates = Array.isArray(rawPlan.candidate_flows || rawPlan.candidateFlows)
@@ -779,7 +830,9 @@ function buildStewardTaskPayload(task) {
     title: task.title || '',
     summary: task.summary || '',
     assigned_agent: task.assignedAgent || task.assigned_agent || '',
+    requested_action: task.requestedAction || task.requested_action || '',
     ontology_fields: task.ontologyFields || task.ontology_fields || {},
-    missing_fields: task.missingFields || task.missing_fields || []
+    missing_fields: task.missingFields || task.missing_fields || [],
+    action_steps: task.actionSteps || task.action_steps || []
   }
 }