docs(audiobooks): archive ABS bookmarks implementation plan
The plan that drove the now-completed bookmarks sub-project. Belongs
on the branch alongside its sibling spec (committed in 73b9aca) per
the project convention of checking in both spec and plan.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
co-authored by
Claude Opus 4.7
parent
0fb8323503
commit
139ec96f21