- ChartContainer: replace stroke-border/fill-muted (ShadCN tokens we
don't have) with var(--chart-grid) so recharts CSS overrides actually work
- Dashboard chart: remove YAxis (ShadCN interactive bar has none)
- Remove unused formatAxisValue, formatAxisDuration, tick calculations
- Exact ShadCN structure: CartesianGrid vertical={false}, XAxis with
tickMargin/minTickGap, single Bar with fill var(--color-{metric})
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add ChartContainer, ChartConfig, ChartTooltip, ChartTooltipContent
primitives ported from ShadCN's chart pattern. Refactor all 3 chart
locations (dashboard, funnels, uptime) to use CSS variable-driven
theming instead of duplicated CHART_COLORS_LIGHT/DARK objects.
- Add --chart-1 through --chart-5, --chart-grid, --chart-axis CSS vars
- Remove duplicated color objects from 3 files (-223 lines)
- Add accessibilityLayer to all charts
- Rounded bar corners on funnel chart
- Tooltips use Tailwind dark classes instead of imperative style props
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
