test(phase22): align runner export/guard parity for core token suite

memory-bank/change-log.md

@@ -2175,3 +2175,29 @@ Validation:
 Follow-ups:
 
 - Optional next bounded slice: add this phase22 suite to any aggregate test runner used in CI if/when phase-level suites are centrally orchestrated.
+
+---
+
+### CL-062: TASK22260 next slice — phase22 runner export guard parity (bounded test-harness consistency)
+
+date: 2026-03-25
+author: Cline
+scope: `tests/phase22/core-token-behaviour.test.cjs`
+type: change
+rationale: Continue bounded test-hardening by aligning phase22 test entry behavior with established suite conventions so it can be executed both directly and from aggregate runners.
+impact: Improves test harness composability and reduces accidental double-execution risk when importing phase22 test suites.
+status: completed
+
+Summary:
+
+- Updated `tests/phase22/core-token-behaviour.test.cjs` to export `run` and add `require.main === module` guard.
+- Preserved direct CLI execution behavior while enabling safe module import by aggregate runners.
+
+Validation:
+
+- `node tests/phase22/core-token-behaviour.test.cjs` -> pass (2/2)
+- `npm run lint` -> warnings only (pre-existing `react-hooks/exhaustive-deps`; no new lint errors)
+
+Follow-ups:
+
+- Optional next bounded slice: add a dedicated `tests/phase22/index.test.cjs` aggregate entrypoint if additional phase22 suites are introduced.