feat(desktop): xdg-desktop-portal pinning, wob OSD, mako DND toggle

- xdg-desktop-portal: pin wlr for ScreenCast/Screenshot, gtk for the
  rest, so flatpak browsers (Meet, Slack, Discord) get a working
  screen-share path instead of whatever the portal frontend happens to
  pick first.
- wob: small wayland overlay bar fed via a fifo. New vol-osd.sh /
  brightness-osd.sh wrappers replace the bare pactl/brightnessctl
  invocations in keybinds so adjusting volume or backlight flashes a
  bar at the bottom of the screen. wob.service owns the fifo lifecycle
  (mkfifo before, rm after).
- mako: add a [mode=do-not-disturb] section that hides notifications
  while the mode is active, plus a Super+x n submode binding to toggle
  it. Notifications still accumulate in history; just no popups.

1 files changed, 16 insertions, 0 deletions

diff --git a/dot_config/systemd/user/wob.service b/dot_config/systemd/user/wob.service
new file mode 100644
index 0000000..3a4268f
--- /dev/null
+++ b/dot_config/systemd/user/wob.service
@@ -0,0 +1,16 @@
+[Unit]
+Description=Wayland overlay bar (volume / brightness OSD)
+PartOf=graphical-session.target
+After=graphical-session.target
+ConditionEnvironment=WAYLAND_DISPLAY
+
+[Service]
+Type=simple
+ExecStartPre=/usr/bin/sh -c 'rm -f "$XDG_RUNTIME_DIR/wob.sock" && mkfifo "$XDG_RUNTIME_DIR/wob.sock"'
+ExecStart=/usr/bin/sh -c 'exec /usr/bin/wob <"$XDG_RUNTIME_DIR/wob.sock"'
+ExecStopPost=/usr/bin/rm -f %t/wob.sock
+Restart=on-failure
+RestartSec=2s
+
+[Install]
+WantedBy=sway-session.target