trellis-governance-closeout 收口旧任务并统一 Trellis-only 治理

.trellis/tasks/archive/2026-05/00-bootstrap-guidelines/implement.jsonl

@@ -0,0 +1,2 @@
+{"file":".trellis/spec/hyb-oa/index.md","reason":"Project-specific hyb-oa spec entry after bootstrap."}
+{"file":".trellis/spec/hyb-oa/project-governance.md","reason":"Project governance supersedes generated bootstrap placeholders."}