Make Getting Started dialog resizable and layout-responsive

[Copilot]

The Getting Started content could be clipped and unreadable on some displays because the dialog had fixed bounds. This updates the dialog to support resizing and keeps control layout synchronized with window size.

• Problem surface

  • GettingStartedDialog used fixed positioning and a non-resizable shell, so long onboarding text could be truncated.

• UI behavior changes

  • Resizable shell: enables SWT.RESIZE for the dialog window.
  • Minimum bounds: adds a minimum dialog size to prevent control overlap/collapse.
  • Dynamic layout: introduces centralized layoutControls(...) and invokes it on SWT.Resize so:
    • action buttons are repositioned,
    • the reports checkbox tracks button row,
    • the text area expands/contracts with available client area.

• Result

  • Getting Started text remains accessible instead of being permanently clipped in fixed-size windows.

shell = new Shell(parent, SWT.APPLICATION_MODAL | SWT.DIALOG_TRIM | SWT.RESIZE);
shell.setMinimumSize(new Point(520, 300));

shell.addListener(SWT.Resize, e -> layoutControls(leftBound));
layoutControls(leftBound);