Code_Uwe/rhl-lieferscheine @ RHL-002-implement-tests-for-APIs-and-filesystem

Code_Uwe 0e5cb39f5b feat: initial ui setup with shad cn, lucide react icons and implement dark mode		2 hete
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button.jsx	0e5cb39f5b feat: initial ui setup with shad cn, lucide react icons and implement dark mode	2 hete
dropdown-menu.jsx	0e5cb39f5b feat: initial ui setup with shad cn, lucide react icons and implement dark mode	2 hete
mode-toggle.js	0e5cb39f5b feat: initial ui setup with shad cn, lucide react icons and implement dark mode	2 hete
theme-provider.js	0e5cb39f5b feat: initial ui setup with shad cn, lucide react icons and implement dark mode	2 hete