lara-verifactu v1.4.1 - AID-1656: synchronous fingerprint availability contract (docs + test). - AID-1671: sequential AEAT submissions in SubmitRegistryToAeatJob (fiscal_verification_queue lock + chain-order guard, re-dispatched holds). Conformance per CONSTITUTION s14, candidate 7d5b2ac (tree 16d503f3): larabill 1765 passed / 0 failed; clientes 4175 passed / 2 pre-existing failures (measured against base package commit, zero regression), suite run against the candidate's defaults.