Module pivot_melt 

Pivot / Melt modal rendering.

Phase 4: Pivot tab UI. Phase 5: Melt tab UI.

Functions

render_shell

Render the Pivot and Melt modal: tab bar, tab-specific body, footer. Uses border_color for default borders and active_color for focused elements. text_primary and text_inverse are used for text-input cursor (same as query prompt).