Separates declaration (what permissions, roles, policies and attributes exist)
from assignment (who holds what), building on the decision primitives already
in advanced.ts rather than replacing them.
Covers the registry and app/authz discovery, the PermissionStore interface
with memory and db adapters, tenant-scoped assignments meeting the existing
TenantMembership, deny-wins precedence, fail-closed behaviour, the audit sink,
codegen and CLI introspection, and the seam for propagating subject context to
the inter-app communication system.
Records two decisions worth keeping: cross-app sharing needs no runtime
catalog distribution (declarations are static code in the shared package;
only assignments are shared, via the database), and can() stays off Context
to avoid a core -> authz dependency cycle.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>