DR-031 — Parallel worktree isolation needs a TOP-LEVEL sibling worktree, not a nested one

Retired. This id is kept on disk so citations to it resolve and so the number can never be re-issued. It is not in force.

What it ruled: Parallel worktree isolation needs a TOP-LEVEL sibling worktree, not a nested one.

Recover the full text: git show 3410d767:src/content/docs/reference/decision-register.md

Note. Superseded in practice by the S497 WorktreeCreate hook (scripts/worktree-create-hook.sh).

Substance now lives in: canonical:scripts/worktree-create-hook.sh