Bound the grant lock wait

The settings package's pre-transaction hook runs this command under
pacman's transaction. Its lock wait was unbounded, so a stalled grant
operation could hang pacman indefinitely before AbortOnFail ever saw a
result. Grant operations are short; wait at most 60 seconds.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

bin/omarchy-sudo-passwordless

@@ -86,7 +86,9 @@ with_root_lock() {
   exec {fd}>"$LOCK_FILE" || return 1
   /usr/bin/chown root:root "$LOCK_FILE" || return 1
   /usr/bin/chmod 0600 "$LOCK_FILE" || return 1
-  /usr/bin/flock -x "$fd" || return 1
+  # Grant operations are short. A stalled holder must not hang a caller
+  # indefinitely, least of all pacman's pre-transaction hook.
+  /usr/bin/flock -x -w 60 "$fd" || return 1
   "$@" || rc=$?
   /usr/bin/flock -u "$fd" || rc=1
   exec {fd}>&-