Route Claude Code to any Anthropic-compatible gateway while it still thinks it's first-party (no request downgrade), with model-alias mapping, request capture, and per-provider egress proxy. 将 Claude Code 路由到任意 Anthropic 兼容网关并让本地仍以为是第一方(请求不降级),支持模型别名映射、请求捕获和基于 provider 的出口代理。