Three holdover free functions from the pre-M3 era were each
just two or three lines that forwarded to a global. With M3
finished, every call site is one #objc_class method body, so
the wrapper indirection earns nothing — inline them.
Deleted:
uikit_window_getter → body of SxSceneDelegate.window
uikit_window_setter → body of SxSceneDelegate.setWindow
uikit_did_finish_launching → body of
SxAppDelegate.application_didFinishLaunchingWithOptions
The bigger helpers (uikit_keyboard_will_change_frame,
uikit_scene_will_connect, uikit_gl_view_tick/_layout, the four
uikit_gl_view_touches_*) stay — their bodies are 30-80 lines
each, so wrapping them in a small forwarding method body inside
#objc_class is the cleaner factoring.
Chess on iOS-sim: board renders, full game state intact. 183
example tests + zig build test green.
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