* chore(docs): Add Documentation for Scopes
* chore(docs): add scopes to API reference, architecture, and design patterns
- Add the seven /scopes routes and their schemas to openapi.json, plus the
scope/kind fields on chat, representation, session-create, and peer-list
schemas; generate the endpoint pages and register a scopes nav group
- Add a Scopes subsection and diagram node to the architecture data model
- Add scope guidance to design patterns: quick-reference rows, an isolation
boundary comparison (workspace / scope / session allowlist), and common
mistakes (scope-per-reader, scopes-as-access-control)
- Replace the "Underneath the Facade" section in scopes.mdx with behavioral
guardrails and pointers to the implementation source
* chore(docs): tighten scopes doc to decision-level detail
- Drop the recall-resolution diagram (restated the Two Arms table)
- Replace the enumerated Rules table with prose; caps and error shapes
now live in the API reference schema descriptions
- Trim backfill/removal internals to observable behavior and note that a
backfilled scope deepens through subsequent dreams
* chore(docs): reserve "scope" for the scopes feature
Using it as a verb for session design, recall filters, and CLI targeting
collides with the named-session-set feature.
* chore(docs): clarify the scopes page and document create/status responses
The page now leads with projection rather than partition and points at the
scopes API; OpenAPI declares the 201/409/404 those routes actually return.
* chore(docs): fix broken anchor and core-concepts link
The rebase reintroduced a link to a renamed anchor in scopes.mdx, and
unified-memory-setup pointed at /core-concepts/, which has no index page.
* chore(docs): correct scope arms, listing, and read-surface pointers
The Accepts row mixed named-scope with the allowlist arm, kind=scope on
the peers list does not return facade ids, and chat/context/search never
mentioned scope=.
* chore(docs): drop the 1k-token session batching narrative
Reasoning no longer waits on a per-session token threshold, so product
docs should not tell people to size sessions around that gate.
* chore: minor fix