v2.18.1 — harden copy-driven re-copy against a missed scaffold (ADR-0041)

Bugfix release — decision-trail's first patch release.

A real adopter update to v2.18 skipped docs/scripts/regen-overview.ps1 because updating.agent.md step 2's example list omitted scripts/ and read as exhaustive, silently overriding the "copy starter/'s contents" instruction beside it.

Fixed

• ADR-0041 (idea 0035 → plan 0030; amends ADR-0022) — step 2's list is reframed as explicitly non-exhaustive: "copy everything under starter/, including but not limited to … and scripts/." No example list can override "copy everything" again, fixing the whole class (any future scaffold subtree), not just this file. starter/ stays the single source of truth; no manifest introduced; ADR-0022's mechanics unchanged (execution-detail amendment only).

Adopter migration (required if you took v2.18)

Re-run the step-2 re-copy of the source's starter/ into your docs/, or minimally confirm docs/scripts/regen-overview.ps1 is present and copy it from the source if absent. Repos that never took v2.18, or that already have the script, need do nothing.

The omission surfaced from a real adopter update, which is why this ships as a remediating release rather than a silent edit.