Replace custom SVG chart implementations with Recharts components:
- Treemap: uses Recharts Treemap with custom content renderer for
SLA-colored cells, labels, and click navigation
- PunchcardHeatmap: uses Recharts ScatterChart with custom Rectangle
shape for weekday x hour heatmap grid cells
Both use ResponsiveContainer (no more explicit width/height props) and
rechartsTheme from the design system for consistent tooltip styling.
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>
Treemap: rectangle area = transaction volume, color = SLA compliance
(green→red). Shows apps at L1, routes at L2. Click navigates deeper.
Punchcard heatmap: 7-day rolling weekday x 24-hour grid showing
transaction volume and error patterns. Two side-by-side views
(transactions + errors) reveal temporal clustering.
Backend: new GET /search/stats/punchcard endpoint aggregating
stats_1m_all/app by DOW x hour over rolling 7 days.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
