fix: add php_minimum, remove stale version comment [skip bump]

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

src/templateDetails.xml

@@ -43,6 +43,7 @@
 	<authorEmail>hello@mokoconsulting.tech</authorEmail>
 	<copyright>(C)GNU General Public License Version 3 - 2026 Moko Consulting</copyright>
 	<description><![CDATA[<p><img src="https://img.shields.io/gitea/v/release/MokoConsulting/MokoOnyx?gitea_url=https%3A%2F%2Fgit.mokoconsulting.tech&amp;logo=gitea&amp;logoColor=white&amp;label=version" alt="Version" /> <img src="https://img.shields.io/badge/license-GPL--3.0--or--later-green.svg?logo=gnu&amp;logoColor=white" alt="License" /> <img src="https://img.shields.io/badge/Joomla-5.x%20%7C%206.x-red.svg?logo=joomla&amp;logoColor=white" alt="Joomla" /> <img src="https://img.shields.io/badge/PHP-8.1%2B-777BB4.svg?logo=php&amp;logoColor=white" alt="PHP" /></p> <h3>MokoOnyx</h3> <p>  <strong>MokoOnyx</strong> is a modern, lightweight enhancement layer built on Joomla's Cassiopeia template.  It adds Font Awesome 7, Bootstrap 5 helpers, automatic Table of Contents, advanced Dark Mode theming,  and optional Google Tag Manager / GA4 integration — all with minimal core overrides for maximum upgrade compatibility. </p> <h4>Custom Colour Themes</h4> <p>  Copy <code>templates/mokoonyx/templates/light.custom.css</code> to  <code>media/templates/site/mokoonyx/css/theme/light.custom.css</code>  (or dark equivalent), customise the CSS variables, then select "Custom" in the Theme tab. </p> <h4>Custom CSS &amp; JavaScript</h4> <ul>  <li><code>media/templates/site/mokoonyx/css/user.css</code> — custom CSS overrides</li>  <li><code>media/templates/site/mokoonyx/js/user.js</code> — custom JavaScript</li> </ul> <p>These files survive template updates.</p>]]></description>
+	<php_minimum>8.1.0</php_minimum>
 	<inheritable>1</inheritable>
 	<files>
 		<filename>component.php</filename>
@@ -365,5 +366,4 @@
 		</fields>
 	</config>
 </extension>
-<!-- dev release 01.00.26 -->