One display policy shared by the Craft suite and ArtCraft Launcher. The default feature set is pure Rust, with no windowing or OS dependencies, and supports WebAssembly.

DisplayMode::Auto follows XDG_SESSION_TYPE when its connection is configured. Otherwise it uses a Wayland connection (WAYLAND_DISPLAY or WAYLAND_SOCKET), then X11 (DISPLAY), then lets winit report the missing display. Explicit unavailable choices return a startup error. CRAFT_DISPLAY_BACKEND=auto|wayland|x11 overrides an app's saved preference for one launch. Without an override, an existing explicit app preference is retained.

Enable serde for persisted choices, native for winit helpers, and wgpu or glow for the renderer the consuming eframe app already uses. These features do not choose a new renderer. configure composes with an existing event-loop builder callback. It does not mutate global environment variables, and leaves other operating systems' startup unchanged.

The Wayland adapter requires the suite's patched winit and egui-winit dependencies. Native file drops use the existing egui dropped-file API. Portal transfers retrieve paths off the UI thread and hold the source offer until retrieval completes. Tablet-v2 samples belong to the window that received them: pressure, tilt, barrel rotation and eraser state reach tablet_feed without a second Wayland connection or a permanent polling timer. An app with its own richer pen model may filter tagged tablet Touch contacts with is_native_tablet_touch; finger input and the pointer events remain available.

Native input does not establish physical tablet or compositor acceptance. The suite's runtime checks and hardware acceptance matrix must be completed before declaring a full migration.