challenge note do habit track

• Body Index cards now support a habit checklist (plain, breathing, audio, or video habits) with a Focus mode wheel-picker view — also available on Home and Challenge cards. • Check-in schedule history is now fully preserved — attendance history no longer disappears once a check-in program ends, and older entries beyond the recent 30 days remain viewable. • Shared/linked Body Index cards: a linked person can now fully edit measurements, log new entries, and view past history for the card shared with them, including a dedicated "View check-in log" option. • Various localization fixes across Body Index screens. No new permissions or account requirements. Existing test login flow (email OTP via Clerk) is unchanged.