feat: 小财管家意图规划与报销提交编排增强

- 完善管家意图识别、模型计划构建与规划器调度
- 重构差旅报销提交编排器与管家计划流程前端交互
- 优化报销消息项样式与文档中心视图
- 新增小财管家与附件上传风险前置复核设计文档
- 补充管家规划器与文档中心测试覆盖

web/tests/documents-center-status-filter.test.mjs

@@ -222,6 +222,10 @@ test('documents center can mark all unread documents as read from toolbar', () =
     documentsCenterView,
     /function markAllDocumentsRead\(\) \{[\s\S]*viewedDocumentKeys\.value = markDocumentsViewed\(allReadableDocumentRows\.value, viewedDocumentKeys\.value\)/
   )
+  assert.match(
+    documentsCenterView,
+    /function resolveLiveDocumentRow\(row\) \{[\s\S]*isNewDocument: isNewDocument\(row, viewedDocumentKeys\.value\)[\s\S]*const visibleRows = computed\(\(\) => \{[\s\S]*\.map\(resolveLiveDocumentRow\)/
+  )
   assert.match(documentListSharedStyles, /\.mark-read-btn\s*\{[\s\S]*border:\s*1px solid #fecaca;/)
 })