perf: sparkline SVG propio en KpiCard — recharts fuera del bundle inicial - #27
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…cial (closes #25) - Sustituye el AreaChart de recharts por SVG propio (curva monotone + gradiente + animacion framer-motion) para los sparklines de 14 puntos del dashboard - Quita recharts del manualChunks: queda embebido en el chunk lazy de Rentabilidad - JS inicial: 1070 KB -> 674 KB (-37%), recharts (411 KB) ya no se descarga en el arranque - Verificado: build OK, lint sin errores, tests 34/34, Playwright (dashboard 3.6s vs 4.0s movil 4G+CPUx4, Rentabilidad carga recharts sin errores)
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Closes #25
Qué
Sustituye el AreaChart de recharts en KpiCard (usado en el dashboard) por un SVG propio (curva monotone + gradiente + animación con framer-motion) para los sparklines de ~14 puntos.
Además quita recharts del manualChunks: queda embebido en el chunk lazy de Rentabilidad, donde sí se usa.
Por qué
recharts (~411 KB, 38% del JS inicial) se descargaba en el arranque solo para dibujar sparklines de 14 puntos en el dashboard. En móvil (390px, red 4G + CPU x4) el tiempo a UI interactiva era ~4 s.
Resultado medido
Verificado