0.160.1

• Fix answering pending questions from the remote UI without SSE subscribers; the first editor or HTTP answer wins.
• Fix GitHub Copilot gpt-5.6-*/gpt-6-* models sent to Chat Completions (unsupported_api_for_model) when the /models catalog is unavailable: gpt >= 5.3 route to Responses by name.
• Keep the catalog API and reasoning variants of hidden GitHub Copilot models (e.g. disabled policy) that are listed explicitly under the provider models config.