Files
shard-wiki/research
tegwick 6ccf349209 research: Logseq deep dive (block-graph on plain Markdown files, in-file block IDs, derived Datalog index); UC-62/63
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>
2026-06-14 15:27:37 +02:00
..

research/

Exploration results for the problem and solution space.

Each exploration uses a yymmdd- prefix on the markdown file or subdirectory when multiple files or sources are involved. Findings here inform spec/ and SCOPE.md; they do not directly authorize implementation until promoted.

Active Explorations

Date Path Summary
2026-06-08 260608-yawex-prior-art/ yawex 0.7.4 Perl wiki prior art; federation design seeds
2026-06-08 260608-c2-wiki-origins/ Ward Cunningham & WikiWikiWeb origins; terms and use cases
2026-06-08 260608-federation-concepts/ Federated Wiki, git/ActivityPub/Xanadu federation models
2026-06-08 260608-wikiengines-overview/ Wiki engine landscape survey (Perplexity-assisted)
2026-06-13 260613-xwiki-deep-dive/ XWiki impl, extension interfaces, ecosystem; UC-38/39
2026-06-13 260613-twiki-deep-dive/ TWiki impl, plugin API, ecosystem; UC-40/41
2026-06-13 260613-foswiki-deep-dive/ Foswiki store abstraction, extension API; UC-42/43
2026-06-14 260614-xanadu-deep-dive/ Project Xanadu — EDL/reference-not-copy, transclusion, addressing; UC-44/45/46
2026-06-14 260614-zigzag-deep-dive/ ZigZag/zzstructure — information space as orthogonal dimensions; UC-47/48/49
2026-06-14 260614-roam-deep-dive/ Roam Research — block-graph DataScript DB, transclusion, datalog, Roam Depot extension API; UC-50/51/52
2026-06-14 260614-obsidian-deep-dive/ Obsidian — file-over-app vaults, plugin API, ecosystem-popularity → UC signal; UC-53/54/55/56
2026-06-14 260614-notion-deep-dive/ Notion — closed block-DB SaaS, external REST API only, database-as-pages; UC-57/58/59
2026-06-14 260614-shard-spectrum-synthesis/ Synthesis — shard family matrix + eleven capability spectra across nine systems; feeds SHARD-WP-0002 T11T16
2026-06-14 260614-joplin-deep-dive/ Joplin — SQLite-local/Markdown-on-sync, interchange-format attach, E2EE content opacity; UC-60/61
2026-06-14 260614-logseq-deep-dive/ Logseq — block-graph on plain Markdown files, in-file block IDs, derived Datalog index; UC-62/63