* s3api: honor attached IAM policies over legacy actions * s3api: hydrate IAM policy docs during config reload * s3api: use policy-aware auth when listing buckets * credential: propagate context through filer_etc policy reads * credential: make legacy policy deletes durable * s3api: exercise managed policy runtime loader * s3api: allow static IAM users without session tokens * iam: deny unmatched attached policies under default allow * iam: load embedded policy files from filer store * s3api: require session tokens for IAM presigning * s3api: sync runtime policies into zero-config IAM * credential: respect context in policy file loads * credential: serialize legacy policy deletes * iam: align filer policy store naming * s3api: use authenticated principals for presigning * iam: deep copy policy conditions * s3api: require request creation in policy tests * filer: keep ReadInsideFiler as the context-aware API * iam: harden filer policy store writes * credential: strengthen legacy policy serialization test * credential: forward runtime policy loaders through wrapper * s3api: harden runtime policy merging * iam: require typed already-exists errors