feat: harden CASAN production install lifecycle

packages/casan-harness/scripts/bash/casan-paths.sh

@@ -41,8 +41,8 @@ _casan_find_app_root() {
   return 1
 }
 
-# Harness (CODE) root: the tree that holds scripts/, security/, templates/, tests/,
-# config/, level5/*.yaml. Derived from this file's location so it follows the move.
+# Harness (CODE) root: the production tree that holds scripts/, security/,
+# templates/, config/, adapters/, and schemas/. Derived from this file's location.
 if [[ -z "${CASAN_HARNESS_ROOT:-}" ]]; then
   CASAN_HARNESS_ROOT="$(cd "$_casan_paths_self/../.." && pwd)"
 fi