Upgrade boundary

Sign in or upgrade

Preserve the selected plan context before entering the existing sign-in flow.

Source contract: Phase K V1 FinalPublication boundary: human review required

Existing auth runtime reused

This boundary does not create a second account architecture and does not start payment. It hands the preserved return state to the existing magic-link sign-in flow.

Preserved context

sourceRoute: /en/sign-in-or-upgrade
sourceLocale: en
sourcePlan: unknown
initiatedAction: sign-in-or-upgrade

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