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/steward-plan-message-copy.test.mjs

@@ -71,3 +71,55 @@ test('steward plan summary guides bare reimbursement intent into scene selection
   assert.match(action.description, /先进入报销助手选择具体费用类型/)
   assert.equal(action.payload.carry_text, '我要报销')
 })
+
+test('steward suggested action carries server executable application action step', () => {
+  const plan = {
+    plan_id: 'plan-application-submit',
+    tasks: [
+      {
+        task_id: 'task-app-1',
+        task_type: 'expense_application',
+        title: '上海出差申请',
+        assigned_agent: 'application_assistant',
+        requested_action: 'submit',
+        ontology_fields: {
+          expense_type: 'travel',
+          time_range: '2026-02-20 至 2026-02-23',
+          location: '上海',
+          reason: '辅助国网仿生产服务器部署',
+          transport_mode: 'train'
+        },
+        missing_fields: [],
+        action_steps: [
+          { step_id: 'task-app-1:01', action_type: 'fill_application_fields', status: 'planned' },
+          { step_id: 'task-app-1:02', action_type: 'build_application_preview', status: 'planned' },
+          { step_id: 'task-app-1:03', action_type: 'validate_required_fields', status: 'planned' },
+          { step_id: 'task-app-1:04', action_type: 'run_duplicate_precheck', status: 'planned' },
+          {
+            step_id: 'task-app-1:05',
+            action_type: 'submit_application',
+            status: 'pending_confirmation',
+            requires_confirmation: true
+          }
+        ]
+      }
+    ],
+    confirmation_groups: [
+      {
+        confirmation_id: 'confirm-task-app-1',
+        action_type: 'confirm_create_application',
+        target_task_id: 'task-app-1'
+      }
+    ],
+    next_action: 'confirm_task'
+  }
+
+  const [action] = buildStewardSuggestedActions(plan)
+
+  assert.equal(action.payload.steward_execute_action, true)
+  assert.equal(action.payload.steward_action_type, 'submit_application')
+  assert.equal(action.payload.steward_action_step.step_id, 'task-app-1:05')
+  assert.equal(action.payload.steward_action_requires_confirmation, true)
+  assert.equal(action.payload.steward_current_task.requested_action, 'submit')
+  assert.equal(action.payload.steward_current_task.action_steps.at(-1).action_type, 'submit_application')
+})