research: Federated Wiki deep dive (journal/fork/neighborhood); UC-70-72

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>

research/260614-federated-wiki-deep-dive/README.md

@@ -0,0 +1,20 @@
+# 260614 — Federated Wiki deep dive
+
+Deep dive on Ward Cunningham's **Federated Wiki** (Smallest Federated Wiki / SFW,
+2011 →) as a **federation model** rather than a single shard: fork-with-provenance,
+the per-page **JSON journal** of semantic actions, the **story** of typed items, the
+**neighborhood/roster** discovery model, and time-bounded **happenings**.
+
+This is prior art for shard-wiki's **coordination layer itself** — the closest existing
+system to "a union of pages preserving provenance, assembled non-destructively." It
+extends `research/260608-federation-concepts/` §3 with the concrete data model + protocol.
+
+- `findings.md` — full writeup: data model, journal/action types, federation protocol,
+  capability profile, INTENT mapping, UC seeds (UC-70–UC-72), architecture notes for
+  SHARD-WP-0002, open questions, sources, traceability.
+
+Catalog yield: UC-70 (attach a fedwiki site via page-JSON + CORS), UC-71 (append-only
+semantic action journal with site provenance as a coordination-journal model), UC-72
+(fork-with-site-provenance federation across a neighborhood / chorus). Enriched
+UC-26/28/30/05/27. Feeds SHARD-WP-0002 T1–T5 (federation) and T11/T13/T16 (write
+granularity, log-based merge, identity≠placement).