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/tests/test_agent_runs_service.py

@@ -49,6 +49,27 @@ def test_agent_run_service_marks_stale_knowledge_sync_run_failed_on_read() -> No
         assert all(item.run_id != created.run_id for item in running_runs)
 
 
+def test_agent_run_service_marks_stale_llm_wiki_run_failed_on_read() -> None:
+    with build_session() as db:
+        service = AgentRunService(db)
+        created = service.create_run(
+            agent=AgentName.HERMES.value,
+            source=AgentRunSource.SCHEDULE.value,
+            status=AgentRunStatus.RUNNING.value,
+            route_json={
+                "job_type": "llm_wiki_sync",
+                "heartbeat_at": (datetime.now(UTC) - timedelta(minutes=31)).isoformat(),
+                "requested_document_ids": [],
+            },
+        )
+
+        fetched = service.get_run(created.run_id)
+
+        assert fetched is not None
+        assert fetched.status == AgentRunStatus.FAILED.value
+        assert fetched.error_message == "Knowledge index heartbeat timed out."
+
+
 def test_agent_run_service_updates_existing_tool_call() -> None:
     with build_session() as db:
         service = AgentRunService(db)