feat: 新增预算费控模型与报销审批流引擎

后端新增预算费控服务和报销单审批流模块，引入申请人费用画像
算法，优化知识库 RAG 运行时和同步逻辑，完善报销单工作流常
量和明细同步，更新差旅报销规则电子表格，前端新增预算分析
组件和数字员工模型，完善审批对话框和洞察面板交互，优化侧
边栏和顶栏样式，补充单元测试。

server/src/app/services/knowledge.py

@@ -602,7 +602,15 @@ class KnowledgeService:
             status_payload = status_map.get(document_id) or {}
             rag_status = str(status_payload.get("status") or "").strip().lower()
             linked_run_status = resolve_linked_ingest_run_status(entry, db=self.db)
-            if linked_run_status == AgentRunStatus.FAILED.value and rag_status in {
+            if not status_payload:
+                if (
+                    current_status == KNOWLEDGE_INGEST_STATUS_SYNCING
+                    and linked_run_status == AgentRunStatus.FAILED.value
+                ):
+                    desired_status = KNOWLEDGE_INGEST_STATUS_FAILED
+                else:
+                    continue
+            elif linked_run_status == AgentRunStatus.FAILED.value and rag_status in {
                 "pending",
                 "processing",
                 "preprocessed",