Remove unused files and implement API routes for account and transaction management

src/pages/api/accounts/[id]/transactions/index.ts

@@ -0,0 +1,15 @@
+import type { APIRoute } from "astro";
+import { transactions } from "../../../../../data/store";
+
+export const GET: APIRoute = async ({ params }) => {
+  const accountTransactions = transactions.filter(
+    (t) => t.accountId === params.id
+  );
+
+  return new Response(JSON.stringify(accountTransactions), {
+    status: 200,
+    headers: {
+      "Content-Type": "application/json",
+    },
+  });
+};