Update pnpm lockfile and refactor frontend components for improved UI consistency

Commit notes

- Added '@phosphor-icons/react' dependency and removed '@tabler/icons-react' from various components for a unified icon set. - Updated package.json to reflect the new dependency and removed unused '@tabler/icons-react' references. - Refactored components such as BpmControl, Header, and TransportControls to utilize the new icon set, enhancing visual consistency across the application. - Removed unused components like AudioStateVisualizer, AudioVisualizerDrawer, and AudioVisualizerPanel to streamline the codebase. - Improved overall responsiveness and layout of the application by adjusting component structures and styles.