统一PC前端布局密度（05-28-pc-frontend-layout-unification）

.trellis/tasks/05-28-pc-frontend-layout-unification/check.jsonl

@@ -0,0 +1,4 @@
+{"file": ".trellis/spec/hyb-oa/project-governance.md", "reason": "Validate Trellis workflow, scope and no production side effects"}
+{"file": ".trellis/spec/hyb-oa/frontend-react-vite-design.md", "reason": "Validate frontend design contracts, tests and UI governance"}
+{"file": ".trellis/tasks/archive/2026-05/05-27-oa-product-flow-test-policy-audit/research/overall-audit-matrices.md", "reason": "Validate implementation remains aligned with governance review roadmap"}
+{"file": ".trellis/tasks/archive/2026-05/05-27-oa-frontend-layout-page-fit-review/research/page-layout-and-fit-review.md", "reason": "Validate page taxonomy and design direction are followed"}