Build single-purpose, throwaway HTML editors for one specific piece of data — drag-and-drop boards, form-based config editors, side-by-side prompt tuners, dataset curators, annotation tools. Always end with a Submit button (calls `submitToClaude`) so the result can be sent back to the agent. Use whenever the user wants to triage, reorder, edit, annotate, curate, prioritize, or pick values where typing prose would be tedious — Linear tickets, feature flags, prompts, datasets, transcripts, anything.
