convert qml project to qtwidgets

ui/src/MainWindow.cpp

@@ -0,0 +1,27 @@
+//
+// Created by arjun-flowylabs on 1/10/2026.
+//
+
+#include "MainWindow.h"
+#include <QPushButton>
+#include <QVBoxLayout>
+
+MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
+{
+    QWidget *centralWidget = new QWidget(this);
+    QVBoxLayout *layout = new QVBoxLayout(centralWidget);
+    QPushButton *button = new QPushButton("Clickable Button", centralWidget);
+
+    layout->addWidget(button);
+    layout->setAlignment(button, Qt::AlignCenter);
+    setCentralWidget(centralWidget);
+}
+
+void MainWindow::resizeEvent(QResizeEvent *event)
+{
+    QMainWindow::resizeEvent(event); // Let layout finish first
+}
+
+MainWindow::~MainWindow()
+{
+}