provider-routing 3

OpenRouter Provider List — 填写 OpenRouter 请求使用的提供商列表与量化位数限制，作为 provider.only / provider.order / provider.quantizations 注入；可选地把请求改经 billion-context 压缩代理。配置由插件自持（$DSH_HOME/openrouter-providers.json），不依赖 settings 命名空间注册，因此同时适配 DSH 0.1.5-rc.1 ~ 0.2.1-alpha.1。配

Provider discovery, matching, health checks, and pre-output failover for DeepSeek Harness.

DSH web plugin that ranks OpenRouter upstream providers by quality, speed, cache-heavy price, context, and uptime, then safely switches the active route.