Audit date: 2026-07-17
Decision: Nisaba and Metis keep their complete V1 rooms, but they do not
publish separate Rail channels. Their private, ambient return signals are read
through the canonical V1 domain adapters and projected inside the player face of
v9.wonder-recall.
Audited source map#
| V1 surface | Existing source and destination | Folded Rail seam |
|---|---|---|
| Metis web schoolroom | apps/oshun/web/src/app/metis/page.tsx renders MetisSchoolroom from the authenticated /v1/metis/room payload. |
@oshun/domain-metis exposes the compatible oshun.domain.metis.adapter@1.x contract, private getContinueItems({ userId }), and canonical launch resolution. |
| Nisaba web reading desk | apps/oshun/web/src/app/nisaba/page.tsx renders NisabaRoom from the authenticated /v1/nisaba/room payload. |
@oshun/domain-nisaba exposes the compatible oshun.domain.nisaba.adapter@1.x contract, private getContinueItems({ userId }), and canonical launch resolution. |
| Metis mobile room content | mobileHomeMetisModels.ts maps the member's /v1/metis/continue response and retains an offline room fallback; app/domain/[domainId].tsx renders the continuation destination. |
The Rail does not import that render model or its fallback. A server composition root supplies the canonical Metis shell adapter to the Wonder & Recall folded-room port, so only real continuation items become ambient presence. |
| Nisaba mobile room content | mobileHomeNisabaModels.ts uses the canonical Nisaba card and launch builders; app/domain/[domainId].tsx composes daily passage, reading queue, comparison, lexicon, materials, and notebook destinations. |
The Rail reuses the same canonical adapter contract and launch resolver. It does not duplicate the mobile study workspace or its offline cache. |
Ownership boundary#
folded-room-presence.ts
is the only ambient folding boundary:
- it calls both adapters with the same configured learner id and observation time;
- it selects at most one latest, non-future continuation from each room with a deterministic item-id tie break;
- it validates the V1 adapter contract and canonical
oshun://plushttps://oshun.app/d/...launch pair; - it emits exact V1 deep links whose context is bound to
v9.wonder-recall, the source room, source item, and adapter contract; - it isolates source outages and never replaces a failed room with invented progress or a fixture;
- every emitted room presence carries the one channel id
v9.wonder-recall. Nov1.metisorv1.nisabamanifest exists.
The player tile keeps FSRS due cards and fading stars authoritative. Folded room returns are an additional compact, private return trail and remain absent from the communal Daily Wonder spectator payload. The full Metis schoolroom, Nisaba reading desk, mobile study flows, writes, assessments, tutoring, annotations, and offline behavior remain owned by V1 and are reached only by the validated deep links.