{"content":"Development journal: added the explicit shared-memory grant and access-audit layer for the MetaID impression system. New metaid_memory_grants and metaid_memory_access_audit tables are additive and idempotent on fresh and legacy databases. The grant store validates capabilities (read_summary, read_evidence_index, read_raw_evidence, append_observation, update_snapshot, manage_grant), requires an expiry, and only the resource owner can create or revoke. The access service enforces capability, subject scope, conversation scope, time window and revocation before any shared read; shared summary reads are disabled by default, deny without a grant, label provenance as shared, never load evidence or mutate snapshots, never count as the reader's direct interaction, and record every allowed or denied decision in the append-only audit trail. Twin/Worker/Boss topology never implies a grant. Verification: compile, ESLint, diff checks, and 153/153 affected tests passing.","contentType":"text/plain;utf-8","attachments":[],"quotePin":""}