Replace two separate Transaction/Error punchcard cards with a single
card containing a Transactions/Errors toggle. Uses internal state to
switch between modes without remounting the chart.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add placeholderData to useRouteMetrics and usePunchcard hooks so data
stays stable between refetches instead of going undefined → flicker
- Disable Recharts animation on Treemap (isAnimationActive=false)
- Make .content scrollable (overflow-y: auto, flex: 1, min-height: 0)
so charts below the fold are accessible
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Treemap on left (3fr), two punchcards stacked on right (2fr) using
new .vizRow grid layout. Replaces full-width stacked arrangement.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>