feat: 添加可配置场景注册表与规则引擎

- 新增场景基类、配置加载、注册表与原语模块
- 添加 r10_refund_split 规则及场景 JSON Schema
- 扩展 scan 引擎与 scenarios API
- 新增场景注册表/配置/集成测试
- 更新前端 App、api、labels 支持新场景

frontend/src/App.tsx

@@ -1,12 +1,26 @@
-import { useState } from "react";
+import { useEffect, useState } from "react";
 import Dashboard from "./Dashboard";
 import Clues from "./Clues";
 import NLQ from "./NLQ";
+import { api } from "./api";
+import { setScenarioLabels } from "./labels";
 
 type Tab = "dashboard" | "clues" | "nlq";
 
 export default function App() {
   const [tab, setTab] = useState<Tab>("dashboard");
+  const [, setLabelsReady] = useState(false);
+
+  useEffect(() => {
+    // 启动时从后端拉取场景元数据，动态填充场景展示名（失败则回退到内置兜底）
+    api
+      .listScenarios()
+      .then((items) => {
+        setScenarioLabels(items);
+        setLabelsReady(true);
+      })
+      .catch(() => undefined);
+  }, []);
 
   return (
     <div className="app">

frontend/src/api.ts

@@ -32,6 +32,13 @@ export interface NLQResponse {
   egress: boolean;
 }
 
+export interface ScenarioMeta {
+  code: string;
+  title: string;
+  label: string;
+  risk_domain: string;
+}
+
 async function http<T>(url: string, init?: RequestInit): Promise<T> {
   const resp = await fetch(url, {
     headers: { "Content-Type": "application/json" },
@@ -65,4 +72,5 @@ export const api = {
     }),
   nlq: (question: string) =>
     http<NLQResponse>("/nlq", { method: "POST", body: JSON.stringify({ question }) }),
+  listScenarios: () => http<ScenarioMeta[]>("/scenarios"),
 };

frontend/src/labels.ts

@@ -22,11 +22,19 @@ export const feedbackLabel: Record<string, string> = {
   false_positive: "误报",
 };
 
+// 场景展示名：内置少量兜底，运行时由后端 /scenarios 填充（新增场景无需改前端）
 export const scenarioLabel: Record<string, string> = {
   R8: "政企拆单",
   R9: "养卡骗补",
 };
 
+// 用后端返回的场景元数据就地填充展示名（组件仍读同一对象引用，无需改动）
+export function setScenarioLabels(items: { code: string; label: string }[]): void {
+  for (const it of items) {
+    if (it.code && it.label) scenarioLabel[it.code] = it.label;
+  }
+}
+
 export const providerLabel: Record<string, string> = {
   mock: "本地Mock",
   vllm: "本地vLLM",