Wayland compositors give a pen only to clients that bind zwp_tablet_v2,
which winit 0.30 doesn't, so on Wayland the pen did nothing in the
window. With a pen attached (BTN_TOOL_PEN in /proc/bus/input/devices),
$DISPLAY set and the X11 libraries installed, the window now opens
through Xwayland, where the X11 reader gets pressure, tilt and the
eraser. PHOTOCRAFT_NATIVE_WAYLAND=1 keeps native Wayland.
macOS: the AppKit event monitor was installed before winit created the
shared NSApplication; it now goes in from eframe's app creation. The
pen's button-up (pressure 0) no longer zeroes the pressure of the
stroke's last moves, which reach the UI in the same frame.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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