fix: allow ssh-agent to work proprely

hosts/rick/includes/home-manager.nix

@@ -14,6 +14,7 @@ _:
         export NO_AT_BRIDGE=1
         export XDG_SESSION_TYPE=wayland
         export XDG_CURRENT_DESKTOP=sway
+        export SSH_AUTH_SOCK=$XDG_RUNTIME_DIR/ssh-agent.socket
         exec ~/.local/bin/sway.sh
     fi
     '';