feat: initial commit — asaas-checkout template white-label

Template genérico de checkout com ASAAS, parametrizado via env vars.
Inclui fluxo completo: checkout → pedido → polling → webhook → admin.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

components/overview.tsx

@@ -0,0 +1,32 @@
+"use client"
+
+import { Bar, BarChart, ResponsiveContainer, XAxis, YAxis } from "recharts"
+
+interface OverviewProps {
+  data: number[]
+}
+
+export function Overview({ data }: OverviewProps) {
+  const months = ["Jan", "Fev", "Mar", "Abr", "Mai", "Jun", "Jul", "Ago", "Set", "Out", "Nov", "Dez"]
+
+  const chartData = data.map((value, index) => ({
+    name: months[index],
+    total: value,
+  }))
+
+  return (
+    <ResponsiveContainer width="100%" height={350}>
+      <BarChart data={chartData}>
+        <XAxis dataKey="name" stroke="#888888" fontSize={12} tickLine={false} axisLine={false} />
+        <YAxis
+          stroke="#888888"
+          fontSize={12}
+          tickLine={false}
+          axisLine={false}
+          tickFormatter={(value) => `R$${value}`}
+        />
+        <Bar dataKey="total" fill="#adfa1d" radius={[4, 4, 0, 0]} />
+      </BarChart>
+    </ResponsiveContainer>
+  )
+}