feat: bulk XML upload, period selector, and session persistence

- Add bulk XML CFDI upload support (up to 300MB)
- Add period selector component for month/year navigation
- Fix session persistence on page refresh (Zustand hydration)
- Fix income/expense classification based on tenant RFC
- Fix IVA calculation from XML (correct Impuestos element)
- Add error handling to reportes page
- Support multiple CORS origins
- Update reportes service with proper Decimal/BigInt handling
- Add RFC to tenant view store for proper CFDI classification
- Update README with changelog and new features

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/web/app/(dashboard)/dashboard/page.tsx

@@ -1,9 +1,11 @@
 'use client';
 
+import { useState } from 'react';
 import { Header } from '@/components/layouts/header';
 import { KpiCard } from '@/components/charts/kpi-card';
 import { BarChart } from '@/components/charts/bar-chart';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { PeriodSelector } from '@/components/period-selector';
 import { useKpis, useIngresosEgresos, useAlertas, useResumenFiscal } from '@/lib/hooks/use-dashboard';
 import {
   TrendingUp,
@@ -15,13 +17,13 @@ import {
 } from 'lucide-react';
 
 export default function DashboardPage() {
-  const currentYear = new Date().getFullYear();
-  const currentMonth = new Date().getMonth() + 1;
+  const [año, setAño] = useState(new Date().getFullYear());
+  const [mes, setMes] = useState(new Date().getMonth() + 1);
 
-  const { data: kpis, isLoading: kpisLoading } = useKpis(currentYear, currentMonth);
-  const { data: chartData, isLoading: chartLoading } = useIngresosEgresos(currentYear);
+  const { data: kpis, isLoading: kpisLoading } = useKpis(año, mes);
+  const { data: chartData, isLoading: chartLoading } = useIngresosEgresos(año);
   const { data: alertas, isLoading: alertasLoading } = useAlertas(5);
-  const { data: resumenFiscal } = useResumenFiscal(currentYear, currentMonth);
+  const { data: resumenFiscal } = useResumenFiscal(año, mes);
 
   const formatCurrency = (value: number) =>
     new Intl.NumberFormat('es-MX', {
@@ -32,7 +34,14 @@ export default function DashboardPage() {
 
   return (
     <>
-      <Header title="Dashboard" />
+      <Header title="Dashboard">
+        <PeriodSelector
+          año={año}
+          mes={mes}
+          onAñoChange={setAño}
+          onMesChange={setMes}
+        />
+      </Header>
       <main className="p-6 space-y-6">
         {/* KPIs */}
         <div className="grid gap-4 md:grid-cols-2 lg:grid-cols-4">