Addresses code-review findings on the invite-friends feature:
- Gate the profile-header share button and followers promo banner to
native; the invite dialog is a no-op on web, so these were dead buttons.
- Show the real canonical profile URL in the invite-link field so the
displayed text matches what Copy/Share/QR actually use.
- Add a web fallback for the QR scanner screen (route is registered on
all platforms) and remove the unimplemented gallery picker button.
- Reuse shared hexToRgb/rgbToHex from alf/util/colorGeneration in ThemedQrCard.
- Rebuild ThemePicker on the shared Menu component instead of a hand-rolled
Modal dropdown.
- Fix an import-sort lint error in dialogs/nuxs/index.
vineyardbovines
7e6198edb2