style: clean up code formatting and remove trailing whitespace

refactor: reorganize imports and fix type imports

app/api/donations/verify/route.ts

@@ -1,9 +1,9 @@
-import { NextRequest, NextResponse } from "next/server";
+import { type NextRequest, NextResponse } from "next/server";
 import { abacatePay } from "@/lib/abacatepay";
 import {
   checkRateLimit,
-  getClientIP,
   createRateLimitResponse,
+  getClientIP,
 } from "@/lib/rate-limiter";
 
 export async function GET(request: NextRequest) {
@@ -21,7 +21,7 @@ export async function GET(request: NextRequest) {
     if (!billingId) {
       return NextResponse.json(
         { success: false, error: "ID da cobrança é obrigatório" },
-        { status: 400 }
+        { status: 400 },
       );
     }
 
@@ -42,7 +42,7 @@ export async function GET(request: NextRequest) {
         error:
           error instanceof Error ? error.message : "Erro ao verificar cobrança",
       },
-      { status: 500 }
+      { status: 500 },
     );
   }
 }