apply_input_env() hard-pinned PUNKTFUNK_INPUT_BACKEND=libei for KWin, and
default_backend() reads that env first — so the auto-detecting host (the
normal `serve` service) ignored the new KwinFakeInput backend and fell back
to the RemoteDesktop portal path that needs a user to approve. Route KWin to
"kwin" (org_kde_kwin_fake_input); GNOME/Mutter stay on libei (no fake_input
there).
Validated live on a Bazzite KDE box via the auto-detect path:
backend=KwinFakeInput, "KWin fake_input ready (no portal)", input events
forwarded with no errors.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
enricobuehler
9a487576ef