Description 724 -> 214 chars, body 1102 -> 343 words, Gotchas 12 -> 3.
Create, rewrite, and cherry-pick flows move to self-contained references/
files behind a dispatch table.
The audit caught that moving the secret scan into the create flow left the
amend/squash path with no check in its loaded context; it is now a gate
common to every flow. Also re-homes the interactive-rebase reflog warning
git-history dropped, since this skill owns rebase.
