What changed

Placing a widget as a non-Pro user and then completing the upgrade purchase used to leave the user on the dashboard — the configured widget was silently discarded instead of being placed on the home screen, forcing the user to start widget setup over.

Technical Context

• Root cause: WidgetConfigurationActivity launched MainActivity via startActivity() and never finished itself. On upgrade success, only the Upgrade destination inside MainActivity's nav stack was popped (landing on Overview); WidgetConfigurationActivity stayed unreachable behind MainActivity and setResult(RESULT_OK) was never called, so the Android widget host treated placement as canceled.
• Introduced EXTRA_UPGRADE_FOR_RESULT as a separate signal from the existing EXTRA_NAVIGATE_TO_UPGRADE, so in-app upgrade navigations (PressControls, Settings) are unaffected and still only pop the Upgrade destination.
• Rotation works without savedInstanceState: the flag is read from the retained Intent (not removed), so onCreate after rotation re-subscribes and still fires on cached isPro=true via filter { isPro }.take(1).
• Auto-confirm is gated on state.canConfirm so a process-death recovery (losing the in-memory draft) returns the user to the config screen rather than placing a widget with default/invalid state.
• Works for both gplay billing and FOSS sponsor flows — both signal success via UpgradeRepo.upgradeInfo.