Drop the remaining sway references

lock.sh no longer falls back to swaylock (hyprlock instead), and the
comments in hyprland.lua and the README no longer mention sway.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

hypr/scripts/lock.sh

@@ -1,12 +1,8 @@
 #!/bin/sh
-# Lock with DankMaterialShell (matches the shell theme). Fall back to swaylock-effects / swaylock
-# when DMS is not running or the IPC call fails.
-pgrep -x swaylock >/dev/null && exit 0
+# Lock the screen with DankMaterialShell (matches the shell theme); hyprlock only if DMS is not running.
+pgrep -x hyprlock >/dev/null && exit 0
 if pgrep -x dms >/dev/null && timeout 3 dms ipc call lock lock >/dev/null 2>&1; then
     exit 0
 fi
-fx=$HOME/.local/bin/swaylock-effects
-if [ -x "$fx" ]; then
-    exec "$fx" -f -C "$HOME/.config/swaylock/config-effects"
-fi
-exec swaylock -f
+command -v hyprlock >/dev/null && exec hyprlock
+exit 1