Introduces Unicode-safe base64 encoding/decoding for call details between incidents and call screens. Refactors PageHeader to accept left, center, and right header props for more flexible layouts. Updates call.jsx and register.jsx to use the new header structure, and improves department/unit rendering and modal dropdowns for department selection. Generalizes and modernizes UI code for better maintainability and cross-platform compatibility.
Removed 'justifyContent: space-between' from the row container and updated the text container to use flex: 1, alignItems: 'flex-start', padding, and maxWidth for improved layout and text alignment.
