add postinstall stylesheet path

Author: demonkillerr

src/gui/mainwindow.cpp

@@ -128,15 +128,20 @@ void MainWindow::loadStyleSheet() {
     QFile styleFile(":/stylesheet.qss");
 
     if (!styleFile.exists()) {
-        // Try loading from file system
+        // Try loading from current directory (for development)
         styleFile.setFileName("stylesheet.qss");
     }
 
+    if (!styleFile.exists()) {
+        // Try loading from system installation path
+        styleFile.setFileName("/usr/share/alg-app-store/stylesheet.qss");
+    }
+    
     if (styleFile.open(QFile::ReadOnly)) {
         QString styleSheet = QLatin1String(styleFile.readAll());
         qApp->setStyleSheet(styleSheet);
         styleFile.close();
-        Logger::info("Stylesheet loaded successfully");
+        Logger::info(QString("Stylesheet loaded successfully from: %1").arg(styleFile.fileName()));
     } else {
         Logger::warning("Could not load stylesheet");
     }