feat: initial commit - finanzas app

Complete personal finance management application with:
- Dashboard with financial metrics and alerts
- Credit card management and payments
- Fixed and variable debt tracking
- Monthly budget planning
- Intelligent alert system
- Responsive design with Tailwind CSS

Tech stack: Next.js 14, TypeScript, Zustand, Recharts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

components/dashboard/DashboardHeader.tsx

@@ -0,0 +1,63 @@
+'use client'
+
+import { RefreshCw } from 'lucide-react'
+import { getMonthName } from '@/lib/utils'
+import { cn } from '@/lib/utils'
+
+interface DashboardHeaderProps {
+  onRefresh?: () => void
+  isRefreshing?: boolean
+}
+
+export function DashboardHeader({
+  onRefresh,
+  isRefreshing = false,
+}: DashboardHeaderProps) {
+  const now = new Date()
+  const currentMonth = now.getMonth() + 1
+  const currentYear = now.getFullYear()
+  const monthName = getMonthName(currentMonth)
+
+  // Formatear fecha actual
+  const formattedDate = new Intl.DateTimeFormat('es-AR', {
+    weekday: 'long',
+    day: 'numeric',
+    month: 'long',
+    year: 'numeric',
+  }).format(now)
+
+  return (
+    <div className="flex flex-col gap-4 border-b border-slate-700 bg-slate-800/50 px-6 py-4 sm:flex-row sm:items-center sm:justify-between">
+      <div>
+        <h1 className="text-2xl font-bold text-white">
+          Dashboard
+          <span className="ml-2 text-lg font-normal text-slate-400">
+            {monthName} {currentYear}
+          </span>
+        </h1>
+        <p className="mt-1 text-sm capitalize text-slate-400">
+          {formattedDate}
+        </p>
+      </div>
+
+      {onRefresh && (
+        <button
+          onClick={onRefresh}
+          disabled={isRefreshing}
+          className={cn(
+            'inline-flex items-center gap-2 rounded-lg border border-slate-600',
+            'bg-slate-700 px-4 py-2 text-sm font-medium text-white',
+            'transition-colors hover:bg-slate-600',
+            'focus:outline-none focus:ring-2 focus:ring-emerald-500 focus:ring-offset-2 focus:ring-offset-slate-800',
+            'disabled:cursor-not-allowed disabled:opacity-50'
+          )}
+        >
+          <RefreshCw
+            className={cn('h-4 w-4', isRefreshing && 'animate-spin')}
+          />
+          {isRefreshing ? 'Actualizando...' : 'Actualizar'}
+        </button>
+      )}
+    </div>
+  )
+}