brush-api-refactor.md

layerchart	minor

breaking(Brush): Redesign brush API

Breaking changes:

• Remove mode prop ('integrated' | 'separated') — sync behavior is now driven by presence of x/y props
• Remove resetOnEnd — call e.brush.reset() in your onBrushEnd handler instead
• Remove ignoreResetClick — replaced by clickToReset (default true)
• Remove onReset event — check brush.active === false in onBrushEnd/onChange instead

New features:

• Add BrushState.move({ x?, y? }) for programmatic selection control (like d3's brush.move())
• Add BrushState.selectAll() to select the full domain extent
• Add BrushState.reset() to clear the selection
• Add clickToReset prop (default true)
• Add zoomOnBrush prop on Chart for simplified charts to opt into brush-to-zoom
• Move domain clamping, edge adjustment, and range computation logic into BrushState class
• Add BrushChartContext interface for easier testing