feat(status): auto-present while a game runs

Presentation is worth having automatically while a game runs: it is a
fullscreen app that already holds the screen, and the idle lock, DND and
breaktimer are all unwanted during it.

Detection is a 5s poll for a gamescope process or a Steam game binary,
either one enough. The Steam pattern is bracketed so pgrep -f cannot match
the sh running the check and report a game forever.

The result goes to its own status.gaming file, and presentation becomes the
OR of it and status.presentation. That separation is the point: a game
ending clears only the gaming half, so a presentation set by hand survives
a game session instead of being clobbered on exit.

0 files changed, 0 insertions, 0 deletions