Inline editing on the dashboard (e.g. TaskCard inline edit) doesn't go
through a modal, so it didn't get useMobileScrollLock applied. iOS would
shift the visualViewport / window scroll for the focused input and
sometimes leave the dashboard pushed up after the keyboard dismissed.
App.tsx now activates useMobileScrollLock whenever mobileKeyboardOpen is
true (mobile + keyboard up + no modal open). Modals continue to manage
their own lock; the hook is reference-counted so they don't conflict.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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