Per T408 Part C: trashed backend/info/progress.html, tasks.html, build-log.html (280-byte redirect stubs, retired). Moved backend/info/restructure.html (38KB, live page) to backend/migration/restructure.html. Verified live at new path. restructure_api.php remains at backend/info/ — API path unchanged.

backend/info/ cleanup — stubs trashed, restructure.html moved to migration/