lukeandClaude Opus 4.6
486842d2d1
- costs.html: summary cards, 4 Chart.js charts, expensive calls table, sessions table with drill-down, session detail view - costs.css: dark theme matching existing style.css variables, responsive grid layout, card/table/chart styling - costs.js: parallel API fetching, Chart.js rendering (timeline, doughnut, bar, session bars), session detail drill-down, period tab filtering Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>