docs(mirror): split empty read rule by status No-status rows with read: [] stay closed; only rows with a status inherit an empty read (eagle-demi #626, ead54f2b).
docs(mirror): empty read inherits parent read eagle-api sends read: [] for a missing read array, so DEMI treats both as no read (eagle-demi #626).
docs: update read inheritance rule for Updates
docs: add ADR-014 and ENGAGE sync-out ENGAGE flows to DEMI, then to Eagle through eagle-api's HTTP API. Add ADR-014, the ENGAGE rows reference, the sync-out section, the ingest contract and the demi-sync-out client. Drop the statements that nothing writes to Eagle.
docs: fix parked cap wording, repoint two links
docs: split Sync-Architecture, add mirror reference Sync-Architecture.md was over the 15 KB page cap. It keeps the explanation. Eagle-Mirror-Reference.md holds the mirrored kinds, the refusal reasons and codes, the eagle-api parked retry, the drift classes, the stored reconcile report and the migration re-push rule. Anchor links on four pages repointed to the moved sections.