sync: 2 new components + 2 improvements from fn_registry

- funnel_chart (new) — conversion funnel with gradient bars
- heatmap_grid (new) — generic rows × cols intensity matrix
- alert (1.1.0) — success/warning/info variants added
- data_table (1.1.0) — density prop (compact/cozy/roomy) added

Source: claude.ai/design export — Ads Analytics Dashboard.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

components/index.ts

@@ -36,7 +36,11 @@ export type { Series } from './chart_container'
 
 // Data
 export { DataTable } from './data_table'
-export type { DataTableProps, ColumnDef } from './data_table'
+export type { DataTableProps, ColumnDef, DataTableDensity } from './data_table'
+export { FunnelChart } from './funnel_chart'
+export type { FunnelChartProps, FunnelStage } from './funnel_chart'
+export { HeatmapGrid } from './heatmap_grid'
+export type { HeatmapGridProps, HeatmapColumn } from './heatmap_grid'
 
 // Mantine Provider
 export { FnMantineProvider } from './mantine_provider'