feat(xingbang): 兴邦金租 AI 评审平台模块(构建于 mini-OpenClaw)

新增兴邦金租评审项目模块, 作为 mini-OpenClaw 之上的完整交付:
- 五智能体流水线(data_curator/risk_scout/case_finder/approval_advisor/risk_monitor)
- evolution 自进化子系统(轨迹采集+奖励计算+模式归纳prompt增强)
- /api/xingbang/* 端点(config/workflow/stream/evolution/trajectories)
- 运行时产物(客户产出情报卡 + 进化轨迹数据)已 gitignore, 不含隐私

遵循兴邦三档分级审批制度, 数据源指向兴邦实验数据包

backend/app.py

@@ -47,6 +47,7 @@ from api.sessions import router as sessions_router
 from api.tokens import router as tokens_router
 from api.compress import router as compress_router
 from api.config_api import router as config_router
+from api.xingbang_api import router as xingbang_router
 
 app.include_router(chat_router, prefix="/api")
 app.include_router(files_router, prefix="/api")
@@ -54,6 +55,7 @@ app.include_router(sessions_router, prefix="/api")
 app.include_router(tokens_router, prefix="/api")
 app.include_router(compress_router, prefix="/api")
 app.include_router(config_router, prefix="/api")
+app.include_router(xingbang_router)
 
 
 @app.get("/")