fix(25-02): add min-h-0 and overscroll-contain to main content area

- Ensures touchpad/wheel scrolling works on Mac and PC
- overscroll-contain prevents scroll chaining to parent

src/components/quickstart/TemplateExplorerView.tsx

@@ -361,7 +361,7 @@ export function TemplateExplorerView({
         </div>
 
         {/* Main Content Area */}
-        <div className="flex-1 overflow-y-auto p-6 space-y-6">
+        <div className="flex-1 min-h-0 overflow-y-auto overscroll-contain p-6 space-y-6">
           {/* Empty State */}
           {hasNoResults && hasActiveFilters && (
             <div className="flex flex-col items-center justify-center py-12 text-center">