- ThemeBuilderAccess::changeableTemplate(): rights (Q18 not_found), group gate,
no TB draft, never the default template, current template_rev
- omitted exclude_from stays, [] clears (Q3); live dry run shows use_on and
exclude_from before/after, overlaps and possible overlaps (B9)
- reattach only with published layouts (B10) and a live TB post; always
disabled, unmarks template and layouts; failure restores everything
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
