Collections declare a `fields:` schema in `.collection.yaml`; entries carry
typed metadata (enum/tags/text). New central `metadata_schema` module parses
the schema leniently (INV-3) and validates entry values — advisory at read
(corpus mirror flags violations as `metadata_malformed` without hard-failing),
the enforcement point for the write boundary (edit endpoints land SLICE-4/5).
- app/metadata_schema.py: parse_fields (lenient/normalizing) + validate
- registry.parse_collection_manifest reads `fields:` into collection config
- collections.get_collection unpacks `fields`; served by the collection API
- cache._refresh_collection_corpus validates each entry advisory-only
Non-breaking, opt-in: no `fields:` → unchanged (INV-5); default `document`
collection declares none (N=1 unchanged). No DB migration — schema rides in
collections.config_json. SLICE-2 of
docs/design/2026-06-06-configurable-collection-metadata.md §7.2.
Backend suite green (601 passed).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
A collection's .collection.yaml may carry an enabled_models list that NARROWS
its project's universe, which narrows the deployment ENABLED_MODELS. Resolution
(extending §6.6/§6.7): funder ∩ per-entry models ∩ collection ∩ project, with
the operator providers as the ceiling.
- migration 031: additive collections.config_json (parallels projects.config_json).
- registry.parse_collection_manifest: read enabled_models into CollectionEntry.config
(absent = inherit, present incl. [] = narrow; [] opts the collection out of AI);
reject a non-list. _upsert_named_collection persists config_json. The default
collection (from projects.yaml) leaves it NULL — it inherits the project.
- models_resolver: _scope_narrowed_universe narrows the operator universe by the
entry's project then collection enabled_models; the funder universe is bounded
by it too. A collection cannot widen its project (narrowing from the ceiling).
- collections.get_collection surfaces enabled_models; GET
/api/projects/:id/collections/:cid returns it.
- test_s6_collection_models_vertical.py: 9 cases (parse, the narrowing chain
incl. opt-out + cannot-widen, API surfacing).
Backend: 525 passed. Per SPEC §22.12. Releases as part of v0.45.0.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Implement slice S3 of the §22 three-tier refactor: the four-layer
most-permissive scope-role resolver (§B.2) over {owner, contributor}
grants at {global, project, collection}, with the §22.5 visibility gate
enforced at the collection grain.
- migration 030: memberships.scope_type += 'global' (the global RFC
Contributor tier; sentinel scope_id '*').
- auth.effective_scope_role folds global → project → collection,
most-permissive, no negative override; can_read_collection /
can_contribute_in_collection / is_collection_superuser /
can_create_collection gate reads, writes, admin, and create.
- collection-grain visibility: a gated collection is hidden from the
public (404, omitted from the directory) yet visible+listed for a
scope-role holder; a collection may be set only as strict or stricter
than its project (public < unlisted < gated), validated at create and
clamped at the mirror.
- entry-scoped authority (mark-reviewed, graduate, branch read/contribute,
PR/discussion/contribution moderation) re-pointed from the project grain
to the entry's collection.
- create-collection authority widened to a project/global-scope grant
holder (§B.1), not only a deployment owner/admin.
Keystone reconciliation (session 0076): a plain granted account is a
granted *account*, not a write-everywhere global role; the implicit-public
write baseline is grandfathered onto the migration-seeded `default`
collection only, so the N=1 deployment loses no capability. Reinterprets
§B.1/§B.3 literally — flagged for the SPEC merge (S6).
Completes @S3 (C1.1–C1.8). Tests: test_s3_scope_roles_vertical.py (8 C.1
scenarios + visibility/strictness), test_migration_030_global_scope.py.
Full backend suite 493 passed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Discover named collections by walking each project's content-repo root for
<subdir>/.collection.yaml; parse + upsert with immutable-type enforcement
(§22.4a) and project-visibility inheritance. The default collection still
flows from projects.yaml.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Ben Stull