**The cloud Anthropic model dropdown was empty.** The model-list route fetched Claude models correctly, but the auto-discovered-provider pass that ran afterward re-listed them with the OpenAI SDK (`Authorization: Bearer`), which 401s against the Anthropic API (it requires `x-api-key`) and overwrote the good result with an empty list. `AnthropicProvider` now lists models via the `anthropic` SDK, so the dropdown populates again.
