The annotation surface's provenance is now described as the pattern it
follows (pencil toggle, intent buttons, popover form, structured export)
rather than by naming a repository that no longer exists. Touches the
plugin/package descriptions, README, docs/architecture.md, the v5.0.3
CHANGELOG entry, and two comments in scripts/annotate.mjs and its test.
Retired-reference check: 12 hits in 7 files -> 0 (content and path names).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Kjell Tore Guttormsen
d0dee914be