initial: bootstrap from BukidBountyApp base

app/Support/AppVersion.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Support;
+
+class AppVersion
+{
+    /**
+     * Get the current app asset version derived from the Vite manifest's last modified time.
+     */
+    public static function get(): string
+    {
+        // Try manifest path
+        $manifestPath = BASE_PATH . '/public/build/.vite/manifest.json';
+        
+        if (file_exists($manifestPath)) {
+            return (string) filemtime($manifestPath);
+        }
+        
+        // Fallback for non-build environments
+        return '1';
+    }
+}