fix: Update fetch calls to use relative paths for API requests

src/pages/index.astro

@@ -10,7 +10,7 @@ export interface Props {
 }
 
 // Fetch accounts from API
-const accountsResponse = await fetch('http://localhost:4321/api/accounts');
+const accountsResponse = await fetch('/api/accounts'); // Use relative path
 const accounts: Account[] = await accountsResponse.json();
 
 // Initialize with first account or empty account if none exist
@@ -24,7 +24,7 @@ const initialAccount: Account = accounts[0] || {
 // Fetch initial transactions if we have an account
 let initialTransactions: Transaction[] = [];
 if (initialAccount.id) {
-    const transactionsResponse = await fetch(`http://localhost:4321/api/accounts/${initialAccount.id}/transactions`);
+    const transactionsResponse = await fetch(`/api/accounts/${initialAccount.id}/transactions`); // Use relative path
     initialTransactions = await transactionsResponse.json();
 }
 ---