Legal Hold — history

The dated record of how Legal Hold got here, moved out of the spec on 2026-10-20 because a reader does not need it to use the spec today. The spec keeps every section spec-format.md requires and its Deleted: tombstones; everything smaller is in git log -- atoms/legal-hold.md.

Decisions

Entries that record a migration rather than a turn the pattern took.

• 2026-09-12 — Rewritten in GRACE lang v0.35; nothing but language changed. Chose: labelled rules in fenced blocks, the three actions as a signature block, the read’s filter axes and malformed-query grounds as rules rather than a paragraph, the eight invariant numbers unchanged, Generation acceptance as conformance checks plus external checks ahead of Non-goals, Non-goals and Edge cases as two sections, the transition table kept beside the rules as the case space. Over: the prose spec. Because: the migration plan, and this atom completes Defensible Retention’s constituent set with Retention Window and Audit Trail.

Migration notes

• 2026-09-15 — Capability requirement 1, moved from Operation. What the deployment supplies, which is what the family means. The rule stood under Operation — one action’s rules — while naming no action, because this spec was migrated before the standard family had a home in an atom; the five atoms migrated a day later put the same obligation here. The words are the words the rule carried (council read 76).