semantic update

backend/src/models/mapping.py

@@ -59,6 +59,7 @@ class DatabaseMapping(Base):
 # [/DEF:DatabaseMapping:Class]
 
 # [DEF:MigrationJob:Class]
+# @TIER: TRIVIAL
 # @PURPOSE: Represents a single migration execution job.
 class MigrationJob(Base):
     __tablename__ = "migration_jobs"