Capture the deliberately-parked items after live-validating the session-aware
backend selector on the Bazzite F44 box (Desktop KDE + Gaming both at the
client's resolution, warm reuse, Feature B mid-stream switch both directions).
Top follow-ups: (1) F44 gamescope teardown corrupts the GPU context (try SIGKILL
teardown, else keep the managed session warm); (2) mid-stream-switch input is
flaky until a reconnect (portal opens before the systemd/D-Bus activation env
settles — fix: import-environment on switch); (3) the KWin virtual output isn't
set primary. Plus polish: input-loss window on switch, the recovered NVENC
invalid-param log, the 4090 HEVC ~800Mbps cap, restore-guard/keep-warm
interaction, and promoting Feature B from opt-in to default.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
