006a T9: Amend 006: `gt`, the board, the timeout premise nf-cmn ← Beads

Twinned from https://github.com/cfsh/ninefold/issues/950 by tools/beads/import_github.py's reconcile pass.

From 006a-the-oracle-and-the-remaining-verbs.md's task table (design 006a). - Covers: doc-only