SHARD-WP-0003 T1. Federation model (not a shard candidate): per-page
append-only semantic-action journal with story as derived replay,
fork-with-site-provenance, neighborhood/roster discovery + chorus of forks.
Prior art for shard-wiki's own pillars: coordination journal (UC-71),
overlay-before-mutation (UC-26 fork), union-without-erasure (UC-72).
Attach as REST/file-store hybrid (page JSON + CORS, UC-70). Feeds
SHARD-WP-0002 T1-T5, T11, T13, T16.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
