Improve layout stability by setting fixed minimum heights for all widgets

Applies a fixed `min-height` to various widgets (BreakingNewsWidget, HoroscopeWidget, NewsWidget, PhotoGalleryWidget, RecipeWidget, SidebarWeatherWidget) to prevent content shifting and ensure a stable layout, especially on mobile devices.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 517dfa7b-26ac-463d-a6e1-a58c6df97188
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Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/f209e72a-0939-48fa-84fc-57854de71967/517dfa7b-26ac-463d-a6e1-a58c6df97188/EtK2Sno
Replit-Helium-Checkpoint-Created: true

client/src/components/recipe-widget.tsx

@@ -28,7 +28,7 @@ export function RecipeWidget() {
   return (
     <button
       onClick={() => navigate("/rezepte")}
-      className="bg-card rounded-lg border border-card-border overflow-hidden h-full w-full text-left cursor-pointer group hover:border-primary/50 transition-colors flex flex-col"
+      className="bg-card rounded-lg border border-card-border overflow-hidden h-full w-full text-left cursor-pointer group hover:border-primary/50 transition-colors flex flex-col min-h-[320px]"
       data-testid="widget-recipe"
     >
       <div className="p-3 flex items-center gap-2 border-b border-card-border flex-shrink-0">