# 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 T11–T16 |