chore: Adjust default window size and viewport orientation

src/MainWindow.cpp

@@ -21,7 +21,7 @@ MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent)
 {
     setWindowTitle("OpenCAD");
-    resize(1280, 720);
+    resize(1920, 1080);
 
     QMenu *fileMenu = menuBar()->addMenu("&File");
     QAction *newAction = fileMenu->addAction("&New");

src/ViewportWidget.h

@@ -73,7 +73,7 @@ private:
     SketchPlane m_currentPlane = SketchPlane::NONE;
 
     float m_xRot = 35.264f * 16.0f; // Default to isometric view
-    float m_yRot = 45.0f * 16.0f;    // Default to isometric view
+    float m_yRot = -45.0f * 16.0f;    // Default to isometric view
     float m_zoom = -5.0f;
     float m_panX = 0;
     float m_panY = 0;