refactor(web): replace custom CSS with shadcn primitives#915

jonnii wants to merge 2 commits into

maingetstackit/stackit:mainfrom

jonnii/20260505032356/replace-custom-CSS-with-shadcn-primitivesgetstackit/stackit:jonnii/20260505032356/replace-custom-CSS-with-shadcn-primitivesCopy head branch name to clipboard