Reach the migration's helper through $OMARCHY_PATH rather than by name

By name, the sudo call resolved through secure_path, which puts /usr/local/bin ahead of /usr/bin and falls back to the caller's PATH where no secure_path is set, so an install could run a different helper than the pinned path did. $OMARCHY_PATH/bin is the package's symlink into /usr/bin on an install and the checkout under a dev link, so neither PATH nor secure_path takes part.

Co-Authored-By: Codex XHigh <noreply@openai.com>

migrations/1788163635.sh

@@ -1,8 +1,9 @@
 echo "Remove legacy temporary passwordless sudo grants"
 
 # Migration queues are per-user; the privileged repair is once per machine.
-# By name: secure_path resolves /usr/bin on an install and the checkout under a
-# dev link, where the installed package may predate __migrate.
-if ! omarchy-sudo-passwordless __migration-complete; then
-  sudo omarchy-sudo-passwordless __migrate
+# The helper beside this migration: the package's /usr/bin copy on an install,
+# and under a dev link the checkout's, which may be newer than the package.
+helper="$OMARCHY_PATH/bin/omarchy-sudo-passwordless"
+if ! "$helper" __migration-complete; then
+  sudo "$helper" __migrate
 fi