federation.sx adds peer/trust/delegate/level_covers facts and one engine
rule: delegated grants apply only when local trust covers the action,
re-checked every query (non-transitive, fail-safe). Local/inherited deny
overrides federated grants; delegation composes with group and resource
inheritance. acl-revoke!/acl-fed-assert! propagate retraction/assertion;
mock fed-sx transport for tests. Federated proofs reconstruct via the
existing explainer. Roadmap complete: 120/120.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
explain.sx reconstructs a canonical proof tree (first-rule, first-solution)
by goal-directed search over the saturated db, since Datalog keeps no
provenance; depth-capped for cyclic safety. acl-explain returns
{:allowed? :proof :reason} with the blocking eff_deny proof on denial.
audit.sx is an append-only decision log (monotonic seq, disk serializer).
api gains acl/explain, acl/audit, acl/audit-tail.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
eff_grant/eff_deny derived relations inherit through member_of (group +
role membership) and child_of (resource hierarchy); role_grant confers
role capabilities. Deny-overrides via stratified negation, deny
authoritative across the inheritance closure. Cyclic membership
terminates. Phase 1 suite unchanged.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Datalog ACL layer (schema/facts/engine/api) over lib/datalog/. Direct
grant permits unless explicit deny names same (S,A,R) — deny-overrides
via stratified negation. Conformance wrapper + scoreboard.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
