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research: Notion deep dive (closed block-DB SaaS, external REST API only, database-as-pages); UC-57/58/59

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The closed/hosted/schema-rich extreme: everything is a block (UUID id,
type, properties, ordered child content, single parent), pages are blocks
and database rows are pages with a schema, Postgres-backed hosted SaaS.
Databases add typed properties + relations + rollups + formulas across
many views = the apex of wiki-page-as-structured-record. Extension model
has no in-app plugin runtime; the only extensibility is the external REST
API (+ webhooks 2026) inside a tight envelope (~3 rps, eventual
consistency, recursive child fetch, scoped/revocable per-page grants).
Adds the third attachment mode (external-API-only) alongside file-store
(Obsidian/TWiki) and in-engine host (Roam/XWiki); Notion enforces no
silent remote mutation via scoped grants. Added UC-57 (attach closed
external-API-only shard w/ operational envelope + scoped grant), UC-58
(typed database w/ schema+relations+views, no flattening), UC-59
(lossy-aware translation w/ fidelity report); enriched
UC-31/34/36/39/50/51/52/54/56. Boundary: one external-API candidate shard,
best as projection/mirror/overlay/backup, not a substrate 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 13:44:09 +02:00
parent f0be5799aa
commit 64796f7b3a
5 changed files with 488 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 deep dives (`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 deep dives (`research/260614-*/`) |
| Demand | NetKingdom integration asks captured, not yet negotiated |
| Spec | Architecture blueprint drafted; UseCaseCatalog 56 UCs from research; PRD/TSD scaffolds |
| Spec | Architecture blueprint drafted; UseCaseCatalog 59 UCs from research; PRD/TSD scaffolds |
| Work | `SHARD-WP-0001` active (6 tasks); `SHARD-WP-0002` active (10 tasks) |
## In Scope (today)