bc548e1447
Adds DeploymentStateQuery request/response contracts (Commons), a site-side handler (SiteRuntime), a CommunicationService query method (Communication), and reconciliation in DeploymentService: when a prior record is InProgress or Failed-on-timeout, query the site; if it already holds the target revision hash mark the record Success without re-sending; on query failure fall through to a normal deploy (site-side stale-rejection is the safety net).