Gemini CLI is being replaced by Antigravity CLI; no users have gemini_cli
or gemini_api models in their registries. Drop claude→gemini from _FALLBACK
so Claude CLI failures surface directly instead of routing to a dead binary.
Gemini API orchestrator (google-genai SDK) is unaffected.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>