docs: fix Steam Deck installation and add grid artwork hint

Running flatpak run from the terminal does not work in Gaming Mode —
the app must be added as a non-Steam game to be launchable from the
Steam UI. The grid artwork hint helps users avoid a bare, icon-less
library entry.
This commit is contained in:
Andre
2026-05-17 09:58:04 +02:00
parent 1bd5ce410a
commit c6c7fcf01c
3 changed files with 51 additions and 3 deletions
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