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research: Logseq deep dive (block-graph on plain Markdown files, in-file block IDs, derived Datalog index); UC-62/63

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Occupies the point the other modern tools leave empty: block-graph
semantics (UUID-addressable, embeddable, queryable blocks) stored as plain
Markdown/Org files on disk, with a DataScript graph derived from the files
(files canonical, index derived). The bridge between Roam (block-DB) and
Obsidian (file-over-app). Headline finding: Logseq resolves the
addressing-spectrum tension — block-level addressing that is also
git-diffable in-file text (id:: property) — and proves a file-backed shard
can serve rich Datalog queries via a derived index. Also: file->SQLite
"DB graph" migration is a live UC-43 (substrate swap under stable
identity); whiteboards = non-Markdown content; dual-attachable (file-store
direct with a Logseq format profile, or in-app plugin). Added UC-62
(attach block-graph-on-plain-files shard), UC-63 (serve structured
queries over a file shard via a derived index shard-wiki builds — converse
of UC-52); enriched UC-32/34/43/50/51/52/55. Catalog now 63 UCs.
Architecture for SHARD-WP-0002 T11/T14/T16: Logseq format profile,
derived-query-index capability, substrate-migration tolerance, in-file
block addressing as the T16 span-address target.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Bernd Worsch
2026-06-14 15:27:37 +02:00
parent e00c160a43
commit 6ccf349209
5 changed files with 396 additions and 12 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 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 deep dives & shard-spectrum synthesis (`research/260614-*/`) |
| Demand | NetKingdom integration asks captured, not yet negotiated |
| Spec | Architecture blueprint drafted; UseCaseCatalog 61 UCs from research; PRD/TSD scaffolds |
| Spec | Architecture blueprint drafted; UseCaseCatalog 63 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)