Alexander Boxhorn enhanced the it-at-m/dave-frontend repository by focusing on frontend user experience improvements for data visualization components. He delivered targeted updates to chart tooltips, refining their readability and ensuring consistent styling across HeatmapChart, StepLineChart, and ZeitreiheChart. Using Vue.js, Vuetify, and TypeScript, Alexander also improved vehicle category ordering and standardized UI formatting for predictable user interactions. He addressed Zeitblock UI bugs by implementing conditional rendering and disabling controls to prevent erroneous states, resulting in more robust workflows. The work demonstrated thoughtful attention to cross-component consistency and maintainability, contributing to clearer data presentation and reduced risk of UI errors.