Each input that has both a connected link and a popup value now has an "Override" toggle below it (default off). Off = external input wins, popup value is a fallback. On = popup value wins regardless. Applies to: refinement_key (Session tab), feedback_prompt and user_intent_prompt (Refiner tab). All other settings are popup-only and unaffected. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>