refactor: harmonize entity fields naming (projectId → referenceProjectUuid) (!44) · Requêtes de fusion · marketing confort / mindtrace / mindtrace-common

malak bounejra a demandé de fusionner feature/MINTR-41 vers develop mai 11, 2026

Renamed projectId to referenceProjectUuid in ReferenceProject entity and updated unique constraint column name for consistency
Removed unused helper methods from ReferenceProject and AccountIntegration entities
Renamed projectId to referenceProjectUuid in AccountIntegration entity and added missing uuid field

refactor: harmonize entity fields naming (projectId → referenceProjectUuid)