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>
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