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/data-table-view-options.tsx

@@ -0,0 +1,50 @@
+"use client"
+
+import { DropdownMenuTrigger } from "@radix-ui/react-dropdown-menu"
+import { MixerHorizontalIcon } from "@radix-ui/react-icons"
+import type { Table } from "@tanstack/react-table"
+
+import { Button } from "@/components/ui/button"
+import {
+  DropdownMenu,
+  DropdownMenuCheckboxItem,
+  DropdownMenuContent,
+  DropdownMenuLabel,
+  DropdownMenuSeparator,
+} from "@/components/ui/dropdown-menu"
+
+interface DataTableViewOptionsProps<TData> {
+  table: Table<TData>
+}
+
+export function DataTableViewOptions<TData>({ table }: DataTableViewOptionsProps<TData>) {
+  return (
+    <DropdownMenu>
+      <DropdownMenuTrigger asChild>
+        <Button variant="outline" size="sm" className="ml-auto hidden h-8 lg:flex">
+          <MixerHorizontalIcon className="mr-2 h-4 w-4" />
+          Visualização
+        </Button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent align="end" className="w-[150px]">
+        <DropdownMenuLabel>Alternar colunas</DropdownMenuLabel>
+        <DropdownMenuSeparator />
+        {table
+          .getAllColumns()
+          .filter((column) => typeof column.accessorFn !== "undefined" && column.getCanHide())
+          .map((column) => {
+            return (
+              <DropdownMenuCheckboxItem
+                key={column.id}
+                className="capitalize"
+                checked={column.getIsVisible()}
+                onCheckedChange={(value) => column.toggleVisibility(!!value)}
+              >
+                {column.id}
+              </DropdownMenuCheckboxItem>
+            )
+          })}
+      </DropdownMenuContent>
+    </DropdownMenu>
+  )
+}