070ac2a719
Salvage of the surviving hunk of #3296 by @Mibayy. The PR's gateway _handle_provider_command hunk targets code removed on main (/provider was absorbed into /model + /status, which already read model.base_url); the hermes status mislabel was the remaining live symptom: _effective_provider_label() only checked the legacy OPENAI_BASE_URL env var, so a custom endpoint configured canonically in config.yaml still displayed as OpenRouter.