Protect guest progress
The current executable save code skips writes for guest sessions, and Settings says guest progress is not saved on exit. Local accounts, rather than guests, use browser localStorage. Clearing site data, using another browser profile or changing devices can remove access to a local account save. No official save export/import control was found in the inspected settings and save implementation. Keep the intact browser profile and do not clear site data while you establish whether your progress is synchronized to an account. Do not follow instructions for a fictional export button.
Account synchronization
In the official game, open Settings and its Account section. A guest sees Create account or sign in; selecting it leaves the run and returns to login, so do not assume guest progress migrates. An account’s status shows Cloud saved, Saving, Pending upload, Offline, or Saved only in this browser. Cloud accounts use Firebase, including Google sign-in. This Lab has no game login and cannot read or restore your account. Use the game’s account settings on the same official origin; do not enter passwords into a wiki.
What gets merged
The documented merge keeps the union of owned normal/shiny partners, maxima for upgrades and statistics, and the most recent coins and companion selection. That is not a promise that every arbitrary edited file can be recovered. If progress looks missing, check the origin, browser profile and logged-in account before deleting anything.
When recovery is uncertain
No external guide can guarantee restoration after browser data was deleted without an intact local account or cloud record. Keep the intact device offline from destructive changes while checking its saved progress. Use the official project’s support channels for account-specific failures.