API key auth only provides short-lived session tokens (8hrs or until session restart) with no refresh mechanism, unlike OAuth which persists via .credentials.json. Remove the non-functional API key settings UI and all supporting code (frontend state, Tauri commands, keyring storage, container env var injection, and fingerprint-based recreation checks) to avoid user confusion. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>