fix(tests): revert premature JSDoc comment closure in QA integration tests

The commit ad0e7e64 inadvertently added a '*/' on line 6 that closed the
JSDoc comment block early, leaving the test coverage description as dangling
syntax outside any comment. This reverts that line to keep the entire header
in one proper JSDoc block.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: SchenLong

tests/core/qa/qa-agent-integration.test.js

@@ -3,7 +3,6 @@
  * ===========================
  * Tests for Phase 2 - Story 10: QA Agent Integration.
  *
- */
  * Test coverage:
  * - QA agent file existence and structure
  * - QA agent manifest registration