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

backend/app/main.py

@@ -10,6 +10,7 @@ from app import __version__
 from app.api.clues import router as clues_router
 from app.api.datahub import router as datahub_router
 from app.api.nlq import router as nlq_router
+from app.api.scenarios import router as scenarios_router
 from app.config import get_settings
 
 
@@ -30,6 +31,7 @@ app = FastAPI(
 app.include_router(datahub_router)
 app.include_router(clues_router)
 app.include_router(nlq_router)
+app.include_router(scenarios_router)
 
 
 @app.get("/health")