procedure EnableRecoveryAutosave(const FileName: string);
Configures a single absolute sidecar path that is atomically refreshed after each changed transaction commit, undo, or redo
If committed history already exists, the method writes the current recovery state immediately
The source PDF path is rejected
An autosave I/O exception is reported after the document and journal operation has succeeded, so the application can correct the path and retry SaveRecoverySnapshot