Add the nix-flatpak flake input and wire its NixOS module into the gaming
module to declaratively install io.mrarm.mcpelauncher from Flathub. The
Flatpak build tracks the newer, pairip-protected Bedrock releases ahead of
the nixpkgs mcpelauncher package.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Pin the new inputs the config now depends on (GTK4 screenshare picker,
rycee's firefox-addons tree, the Google Sans Flex font, and spicetify-nix)
and add flake.lock.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
