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shard-wiki/research/README.md
tegwick e00c160a43 research: Joplin deep dive (SQLite-local/Markdown-on-sync, interchange-format attach, E2EE content opacity); UC-60/61
Architecturally distinct from the Obsidian/Roam/Notion trio: content is
Markdown, the local store is SQLite, and the sync representation is a
folder of per-item Markdown+metadata files on a backend of choice
(filesystem, WebDAV, Nextcloud, Dropbox, OneDrive, S3, Joplin
Server/Cloud). Two new findings: (1) attach the sync/interchange mirror,
not the app or the SQLite store, offline and app-independent, landing on
INTENT's WebDAV/Nextcloud/S3 backends (UC-60, distinct from native
on-disk store UC-40 and app-files UC-53); (2) E2EE => content opacity, a
proposed twelfth capability spectrum for encrypted-at-rest shards (UC-61).
Also: Joplin is the file-sync-daemon boundary case (attach the mirror as
pages, never re-sync); store-minted page-level :/id links (addressing
spectrum middle); dual surface (plugin host + local Data API on
localhost:41184). Enriched UC-31/36/38/40/51/55. Catalog now 61 UCs.
Architecture for SHARD-WP-0002 T11/T14: interchange-format attach,
content-opacity field, local-REST sub-mode, format-aware file-store
profiles.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-14 14:21:31 +02:00

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# 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 |