feat: harden CASAN production install lifecycle

packages/casan-harness/scripts/bash/verify-harness-reuse.sh

@@ -6,8 +6,8 @@ set -euo pipefail
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 source "$SCRIPT_DIR/casan-paths.sh"
 PROJECT_ROOT="$CASAN_APP_ROOT"
-REGISTRY="$CASAN_HARNESS_ROOT/level5/project-registry.json"
-PACKAGE="$CASAN_HARNESS_ROOT/level5/harness-package.json"
+REGISTRY="$CASAN_HARNESS_ROOT/config/project-registry.json"
+PACKAGE="$CASAN_HARNESS_ROOT/config/harness-package.json"
 
 python - "$REGISTRY" "$PACKAGE" <<'PY'
 import json