chore: initial import for test contour

src/Service/Performance/PerformanceTrackerService.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Service\Performance;
+
+class PerformanceTrackerService
+{
+    private ?float $startTime = null;
+    private ?float $endTime = null;
+
+    public function start(): void
+    {
+        $this->startTime = microtime(true);
+        $this->endTime = null;
+    }
+
+    public function stop(): void
+    {
+        $this->endTime = microtime(true);
+    }
+
+    public function getDurationMs(): int
+    {
+        if (!$this->startTime) {
+            return 0;
+        }
+        
+        $endTime = $this->endTime ?? microtime(true);
+        return (int)round(($endTime - $this->startTime) * 1000);
+    }
+
+    public function reset(): void
+    {
+        $this->startTime = null;
+        $this->endTime = null;
+    }
+}