Review response for #884.
Security:
- gate `SessionCreate.scopes` behind a workspace-level key; the session-create
route is self-authorizing, so a peer- or session-scoped token could mint scope
peers and join sessions to scopes it had no access to via `POST /scopes`
- refuse a reserved-but-nonexistent name in two observed positions that used the
permissive guard: chat `target` and session-context `peer_target`. Both let a
caller act on `scope.X` before it existed, then create the scope
Facade:
- exclude scope peers from `GET /sessions/{id}/peers` and refuse the membership
-config read for a real scope, matching its write side
- replace `GET /scopes/{id}/sessions` with `POST /scopes/{id}/sessions/list`
returning `Page[Session]`; the add route now returns 204. Membership was
unbounded on both, while every other list surface paginates
- rename `crud.get_scope` to `get_scope_or_raise`
Tests:
- add a missing-name axis to the route-policy table (`Case.refuse_missing`), which
is what surfaced the two guard gaps above
- delete 14 hand-written tests the table now enumerates; 52 -> 39 functions in
test_scopes.py with more cases covered
- tighten the squatter assertion from `!= 422` to `< 400`, which was passing on 5xx
- assert the FastAPI-internals traversal still derives positions, so a framework
upgrade can't silently empty the suite
Docs:
- drop internal ticket and RFC references from the published OpenAPI descriptions
and surrounding comments; state the behavior instead
- move implementation reasoning out of the `PUT /peers/{id}` docstring, which
FastAPI publishes, into a comment
de428780a6