feat: 新增风险图谱算法与系统仪表盘及操作反馈体系

后端新增风险图谱算法模块、风险观察与反馈服务、规则 DSL
校验器和可解释性引擎，完善系统仪表盘和财务仪表盘统计，
优化 agent 运行和编排执行链路，清理旧开发文档，前端新增
系统趋势、负载热力图等多种仪表盘图表组件，完善操作反馈
对话框和工作台日期选择器，优化报销创建和审批详情交互，
补充单元测试覆盖。

server/tests/test_agent_runs_service.py

@@ -104,3 +104,43 @@ def test_agent_run_service_updates_existing_tool_call() -> None:
         assert len(fetched.tool_calls) == 1
         assert fetched.tool_calls[0].status == "succeeded"
         assert fetched.tool_calls[0].response_json == {"track_id": "insert_123"}
+
+
+def test_agent_run_service_summarizes_model_and_tool_failures() -> None:
+    with build_session() as db:
+        service = AgentRunService(db)
+        run = service.create_run(
+            agent=AgentName.ORCHESTRATOR.value,
+            source=AgentRunSource.USER_MESSAGE.value,
+            status=AgentRunStatus.SUCCEEDED.value,
+            ontology_json={
+                "parse_strategy": "rule_fallback",
+                "model_invocation_summary": {
+                    "model_guardrail_reason": "model_conflicts_with_application_stage_signal"
+                },
+            },
+        )
+        service.record_tool_call(
+            run_id=run.run_id,
+            tool_type=AgentToolType.LLM.value,
+            tool_name="semantic_ontology.main",
+            request_json={"stage": "semantic_parse"},
+            response_json={"model_guardrail_reason": "model_conflicts_with_application_stage_signal"},
+            status="failed",
+            duration_ms=18,
+            error_message="model_conflicts_with_application_stage_signal",
+        )
+
+        stats = service.summarize_runs(agent=AgentName.ORCHESTRATOR.value, limit=20)
+
+        assert stats.total_runs >= 1
+        assert stats.tool_call_count >= 1
+        assert stats.failed_tool_call_count >= 1
+        assert stats.llm_call_count >= 1
+        assert stats.failed_llm_call_count >= 1
+        assert stats.model_fallback_count >= 1
+        assert stats.model_guardrail_count >= 1
+        assert any(
+            item.get("tool_name") == "semantic_ontology.main"
+            for item in stats.recent_errors
+        )