Onboarding wizard no longer redirects you toward a deleted plan

If you started the Subi onboarding wizard, had it create a plan for you, and then deleted that plan afterward, opening your Subi home page could send you straight back into the wizard's plan editor, which then failed to load and showed a blank screen.

The wizard remembered the id of the plan it created and kept trying to reopen it. Once that plan no longer existed, nothing recognized the pointer was stale, so every visit re-triggered the same redirect. We now check for this on your next visit and clear the stale reference automatically, so the wizard falls through to its normal setup flow instead of looping.

We also added a proper error screen for the rare case a plan still fails to load for another reason, with a way back to your plan list, instead of a blank page.

This affected a small number of merchants who had created and then deleted a plan during onboarding. If you ever saw a blank screen or an unexpected redirect while setting up Subi, this is now resolved.