Initial commit of LightMVC framework files.

app/Controllers/ApiController.php

@@ -0,0 +1,14 @@
+<?php
+namespace App\Controllers;
+
+use Core\Controller;
+
+class ApiController extends Controller
+{
+    public function ping()
+    {
+        // Simple health-check endpoint
+        $this->response->setHeader('Content-Type', 'application/json');
+        $this->response->setBody(json_encode(['status' => 'ok', 'time' => microtime(true)]));
+    }
+}