fix: 后端 API 修复

- deps.py: 依赖注入优化
- matches.py: 比赛列表查询修复
- predict.py: 预测接口参数校验修复
- orchestrator.py: 多 Agent 编排逻辑修复

src/api/deps.py

@@ -187,8 +187,13 @@ async def rate_limit_predict(request: Request) -> None:
     client_ip = get_client_ip(request)
 
     if not _predict_limiter.is_allowed(client_ip):
-        logger.warning("rate limit exceeded for %s", client_ip)
+        logger.warning("rate limit exceeded for %s", ip)
         raise HTTPException(
             status_code=429,
             detail="请求过于频繁,请稍后再试(每分钟最多 10 次)",
         )
+
+
+def get_predict_rate_limit_remaining(request: Request) -> int:
+    """查询当前 IP 剩余的预测配额(用于响应中提示前端)。"""
+    return _predict_limiter.remaining(get_client_ip(request))