fix(archsetup): add system config improvements and gnome-keyring setup

- Enable chrony service and create /etc/sysconfig/chronyd to suppress warning
- Configure wireless regulatory domain (US) for full WiFi capabilities
- Configure paccache to retain 3 package versions
- Pre-create gnome-keyring with 'login' default (auto-unlocks at login)
- Add rtkit package for pipewire realtime scheduling
- Add validation test for gnome-keyring setup
- Add system action .desktop files (logout, shutdown, reboot, suspend, lock)

1 files changed, 7 insertions, 0 deletions

diff --git a/dotfiles/system/.local/share/applications/lock-screen.desktop b/dotfiles/system/.local/share/applications/lock-screen.desktop
new file mode 100644
index 0000000..2bd7afa
--- /dev/null
+++ b/dotfiles/system/.local/share/applications/lock-screen.desktop
@@ -0,0 +1,7 @@
+[Desktop Entry]
+Name=Lock Screen
+Comment=Lock the screen
+Exec=slock
+Icon=system-lock-screen
+Type=Application
+Categories=System;