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research: local-first workspaces cohort deep dive (Anytype/AFFiNE/AppFlowy) — CRDT substrate; UC-64/65

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Combined cohort memo for the three open-source local-first all-in-one
workspaces, studied together because they share the trait none of the
prior eleven systems had: the store is a CRDT (Anytype any-sync, AFFiNE
Yjs/y-octo, AppFlowy Yrs). The cohort thesis: CRDT changes the adapter
math — the backend performs conflict-free merge itself (shard-wiki must
not impose git/text merge; speak the CRDT via a replica or stay
projection/overlay), history is a CRDT update log (supplement not git),
and the attach surface is a replica or self-host sync endpoint, with
Anytype adding P2P (no single endpoint) + E2EE (opaque). Added UC-64
(CRDT-synced shard with native merge), UC-65 (P2P/decentralized shard,
no single canonical endpoint); enriched UC-36/47/48/51/55/57/58/61.
Catalog now 65 UCs. Architecture for SHARD-WP-0002 T11/T14: merge-model
capability (proposed 13th spectrum: none/git/native-CRDT), CRDT-replica
substrate + P2P/no-central-endpoint attach mode, endpoint-model
capability, MCP as an integration surface. Boundary: CRDT local-first
candidate shards — attach a replica/projection as pages, respect native
merge, never re-drive their sync; not substrates and not the federation
layer.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Bernd Worsch
2026-06-14 16:21:08 +02:00
parent 6ccf349209
commit 3e0c05a2b3
5 changed files with 419 additions and 14 deletions
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SCOPE.md
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@@ -19,9 +19,9 @@ Learnings update both SCOPE and INTENT where necessary.
|-------|-------|
| Code | Python package scaffold (`src/shard_wiki/`, smoke tests only) |
| Intent | `INTENT.md` established; authorization-in-core amendments drafted |
| Research | yawex prior art; c2 origins; federation concepts; wikiengines overview (`research/260608-*/`); XWiki/TWiki/Foswiki deep dives (`research/260613-*/`); Xanadu + ZigZag + Roam + Obsidian + Notion + Joplin + Logseq deep dives & shard-spectrum synthesis (`research/260614-*/`) |
| Research | yawex prior art; c2 origins; federation concepts; wikiengines overview (`research/260608-*/`); XWiki/TWiki/Foswiki deep dives (`research/260613-*/`); Xanadu + ZigZag + Roam + Obsidian + Notion + Joplin + Logseq + local-first workspaces (Anytype/AFFiNE/AppFlowy) deep dives & shard-spectrum synthesis (`research/260614-*/`) |
| Demand | NetKingdom integration asks captured, not yet negotiated |
| Spec | Architecture blueprint drafted; UseCaseCatalog 63 UCs from research; PRD/TSD scaffolds |
| Spec | Architecture blueprint drafted; UseCaseCatalog 65 UCs from research; PRD/TSD scaffolds |
| Work | `SHARD-WP-0001` active (6 tasks); `SHARD-WP-0002` active (16 tasks: T1–T10 federation + T11–T16 adapter contract) |
## In Scope (today)