The agent's SSH socket was only exported via the zsh integration, so a
GUI client launched outside a shell (rofi launcher, autostarted apps)
couldn't use gpg-agent for SSH. Add a home.sessionVariables export
resolving the socket with gpgconf --list-dirs agent-ssh-socket — the
same lookup the shell integration uses, so the two can't drift — which
reaches GUI apps via the login shell that starts Hyprland (the path
NIXOS_OZONE_WL already takes).
Eval-verified: the var resolves to the gpgconf substitution; the home
config still builds.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add modules/home/keys.nix (nomarchy.keys.enable, default on): one agent —
services.gpg-agent with enableSshSupport fronts SSH, so a single pinentry
handles every passphrase (GPG signing/decryption and SSH key unlocks).
pinentry-qt for a reliable native-Wayland prompt under Hyprland, themed by
Stylix's Qt config. Cache TTLs 30 min / 2 h.
SSH_AUTH_SOCK is exported by the agent's zsh integration (terminal git/ssh
is the supported path). gnome-keyring stays the Secret Service — modern
versions run no SSH agent, so there's no socket contention; screen lock
doesn't flush the agent cache.
nix flake check passes.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
