getAllAvailableModels() only consulted the static PROVIDER_MODELS catalog,
which has no entry for dynamically-registered compatible providers
(id like openai-compatible-chat-uuid). Fall back to the connection's
own defaultModel/customModels/placeholder, mirroring ModelSelectModal.js.
Add Grok Build to Dashboard → CLI Tools. Apply writes a [model.9router]
custom model to ~/.grok/config.toml and sets [models].default, routing
the xAI Grok TUI through 9Router. Reset removes the slot and restores
the previous default.