feat(dashboard): enrich RH modals with charts, stats and progress bars
Headcount modal:
- Horizontal bar chart: top 10 empresas by activos
- Summary stats row: empresa con más empleados + promedio
- % del Total column with mini progress bars in table
- KPI sub-labels: empresa count, rotación health indicator
Nómina modal:
- Horizontal bar chart: top 10 empresas by masa salarial
- PieChart donut: masa salarial vs beneficios distribution
- % del Total column with progress bars in table
- KPI sub-labels: empresa count, % beneficios, vs mes anterior
Co-Authored-By: Claude Opus 4.6 (1M context) noreply@anthropic.com