Noctalia theme migration: Niri IPC, GTK palette, alacritty import

- Switch Niri keybinds from qs-wrapped IPC calls to direct 'noctalia msg'
- Add noctalia.kdl include to niri config
- Replace alacritty theme with import of noctalia.toml
- Ghostty: Retro Legends → noctalia theme
- GTK3/4: accent palette shift from lavender (#bfc2ff) to purple (#b267e4)
- systemd swayidle-lock.service updated

dotfiles/systemd-user/.config/systemd/user/swayidle-lock.service

@@ -4,13 +4,13 @@ Documentation=https://github.com/swaywm/swayidle
 After=graphical-session.target
 
 [Service]
-# qs exists on dankware, bare noctalia CLI on blankpad; the fallback chain makes
-# this one unit correct on both hosts. deploy.sh enables it only where the
-# ExecStart binary resolves, so it stays inert until swayidle is installed.
+# Locks via the noctalia v5 shell; `noctalia msg` resolves the running instance
+# through the D-Bus session bus, so no WAYLAND_DISPLAY pinning is needed in unit context.
+# deploy.sh enables it only where the ExecStart binary resolves, so it stays inert until swayidle is installed.
 ExecStart=/usr/bin/swayidle -w \
-  timeout 300 'qs -c noctalia-shell ipc call lockScreen lock || noctalia msg session lock' \
-  before-sleep 'qs -c noctalia-shell ipc call lockScreen lock || noctalia msg session lock' \
-  after-resume 'qs -c noctalia-shell ipc call lockScreen lock || noctalia msg session lock'
+  timeout 300 '/usr/bin/noctalia msg session lock' \
+  before-sleep '/usr/bin/noctalia msg session lock' \
+  after-resume '/usr/bin/noctalia msg session lock'
 Restart=on-failure
 RestartSec=5s