Adds a lease-loss/reacquire integration rehearsal and fixes Dapper due-schedule materialization with an explicit row DTO. Evidence: PostgreSQL test 1/1 passed; TRX SHA256 49627FF0180034D2A7A1E4393448C73D337D918E7CE47EA9FC2BDB144FBBA833.
Adds dispatch revision CAS to dispatched, skip, and release schedule mutations. Targeted Release evidence: 8/8 passed. PostgreSQL concurrency rehearsal remains required; WBS stays IN_PROGRESS.
kjh2064