test(clean): classify gstack-tasks rows files (tasks-*) as kept, after main added the producer

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

test/gstack-clean-producers.test.ts

@@ -39,6 +39,7 @@ const KEPT: Record<string, string> = {
   'base-red.json': '/ship base-red record',
   'review-*': '/ship review loop records',
   'fix-check-*': '/ship fix-check inputs',
+  'tasks-*': 'gstack-tasks rows files (bin/gstack-tasks)',
   'autoplan': 'autoplan phase artifacts (autoplan/SKILL.md.tmpl)',
   'eval-bisect': '/investigate eval bisect cache',
   'price-gate': 'gstack-eval-plan price receipts',