fix: extract version from debian/changelog at build time, not runtime

$version in InstalledVersions is now a '0.0.0' placeholder replaced by
debian/rules with PKG_VERSION (dpkg-parsechangelog) at dh_install time.
Debian packages carry no git history, so the changelog is the only
reliable version source; APP_VERSION define remains for Ease\Shared.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Vitexus

debian/autoload.php

@@ -26,7 +26,7 @@
         $versions = array_merge($versions, $d['versions'] ?? []);
     }
     $name    = 'unknown';
-    $version = defined('APP_VERSION') ? APP_VERSION : '0.0.0';
+    $version = '0.0.0';
     $versions[$name] = ['pretty_version' => $version, 'version' => $version,
         'reference' => null, 'type' => 'library', 'install_path' => __DIR__,
         'aliases' => [], 'dev_requirement' => false];

debian/rules

@@ -22,5 +22,7 @@ override_dh_install:
 		debian/php-vitexsoftware-ease-html-widgets/usr/share/php/EaseHtmlWidgets/autoload.php
 	sed -i "s|: 'unknown'|: '$(PKG_SOURCE)'|" \\
 		debian/php-vitexsoftware-ease-html-widgets/usr/share/php/EaseHtmlWidgets/autoload.php
+	sed -i "s|: '0.0.0'|: '$(PKG_VERSION)'|" \\
+		debian/php-vitexsoftware-ease-html-widgets/usr/share/php/EaseHtmlWidgets/autoload.php
 	sed -i "2a defined('APP_VERSION') || define('APP_VERSION', '$(PKG_VERSION)');" \
 		debian/php-vitexsoftware-ease-html-widgets/usr/share/php/EaseHtmlWidgets/autoload.php