Create clean release database baseline

docs/project-history-and-external-model-architecture.md

@@ -93,8 +93,6 @@ Implemented named-snapshot foundation:
 - restore records a new `restore` revision containing both the selected target
   state and the complete pre-restore inverse; undo/redo therefore remains
   available after application restarts
-- compatible upgrade-only Consumer links, mappings and reports are preserved
-  separately and are never imported into the logical snapshot payload
 - arbitrary restore payloads are rejected by the generic user-command
   endpoint; only server-stored snapshots can initiate a forward restore
 - the project page provides an initially collapsed snapshot/timeline panel,