feat: implement admin dashboard with full CRUD functionality

server/api/customers/index.get.ts

@@ -0,0 +1,24 @@
+import { defineEventHandler, createError } from 'h3';
+import { db } from '~/server/db';
+import { customers } from '~/server/db/schema';
+
+export default defineEventHandler(async () => {
+  try {
+    // Select specific fields to avoid exposing sensitive data like passwords
+    const allCustomers = await db.select({
+      CustomerID: customers.id,
+      Name: customers.name,
+      Contact: customers.contact,
+      Gender: customers.gender,
+      IDCard: customers.idCard,
+    }).from(customers);
+    
+    return allCustomers;
+  } catch (error) {
+    console.error('Error fetching customers:', error);
+    return createError({
+      statusCode: 500,
+      statusMessage: 'Failed to fetch customers',
+    });
+  }
+});