Host-side window records + message queue; WM_SIZE/WM_MOVE/WM_DESTROY sent
synchronously as Win32 does; PostQuitMessage also queues WM_QUIT. 64-bit
pointer casts ADAPTED. port.ms_window.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
TextBar and DibBar verbatim over the FreeType GDI shim (+GetTextExtentPoint32A);
BlockTexture verbatim except Render, which records the clipped quad as a UI
image of the device CPU texture (UIRenderAddImageNamed). Notices now render;
port.text_bar covers block split, pixels, colour, ClearBar and TipBoard clip.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>