- Add user_created field to all item update operations to maintain proper user association
- Update useMyProfile hook to use direct computation instead of useMemo to avoid React hook queue issues
- Refactor UserControl to use useMyProfile hook for consistency
- Fix user_created handling in LocateControl, ItemFormPopup, useSelectPosition, and itemFunctions
- Add user parameter to linkItem, unlinkItem, and related functions with proper TypeScript signatures
- Update all function calls and tests to include user parameter
- Ensure proper null safety with user ?? undefined pattern
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Co-Authored-By: Claude <noreply@anthropic.com>