Auto-minify CSS/JS: dev mode deletes .min, prod mode regenerates

- helper/minify.php: PHP-based CSS/JS minifier with timestamp caching
- Dev mode ON: deletes all .min.css and .min.js files
- Dev mode OFF: regenerates .min files from source if stale or missing
- Covers template.css, light/dark standard/custom theme CSS, template.js
- No external build tools needed — template is self-contained

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/index.php

@@ -70,6 +70,10 @@ if ($params_favicon_source) {
     }
 }
 
+// Minification: dev mode ON → delete .min files; OFF → regenerate if stale
+require_once __DIR__ . '/helper/minify.php';
+MokoMinifyHelper::sync(JPATH_ROOT . '/' . $templatePath, (bool) $params_developmentmode);
+
 // Core template CSS + JS — use minified when not in development mode
 if ($params_developmentmode) {
 	$wa->useStyle('template.base');       // css/template.css