Enhance loading skeletons and breadcrumbs

- Add content-m matching loading skeletons for ParkDetail, RideDetail, CompanyDetail, etc., replacing generic spinners to preserve layout during load
- Remove redundant Back to Parent Entity buttons in detail pages in favor of breadcrumb navigation
- Prepare groundwork for breadcrumbs across detail pages to improve cohesion and navigation

src/pages/ParkDetail.tsx

@@ -3,6 +3,7 @@ import { useParams, useNavigate, Link } from 'react-router-dom';
 import { HoverCard, HoverCardContent, HoverCardTrigger } from '@/components/ui/hover-card';
 import { CompanyPreviewCard } from '@/components/preview/CompanyPreviewCard';
 import { EntityBreadcrumb } from '@/components/navigation/EntityBreadcrumb';
+import { ParkDetailSkeleton } from '@/components/loading/ParkDetailSkeleton';
 import { Header } from '@/components/layout/Header';
 import { getBannerUrls } from '@/lib/cloudflareImageUtils';
 import { trackPageView } from '@/lib/viewTracking';
@@ -164,13 +165,7 @@ export default function ParkDetail() {
   if (loading) {
     return <div className="min-h-screen bg-background">
         <Header />
-        <div className="container mx-auto px-4 py-8">
-          <div className="animate-pulse space-y-6">
-            <div className="h-64 bg-muted rounded-lg"></div>
-            <div className="h-8 bg-muted rounded w-1/2"></div>
-            <div className="h-4 bg-muted rounded w-1/3"></div>
-          </div>
-        </div>
+        <ParkDetailSkeleton />
       </div>;
   }
   if (!park) {
@@ -203,13 +198,8 @@ export default function ParkDetail() {
           className="mb-4"
         />
         
-        {/* Back Button and Edit Button */}
-        <div className="flex items-center justify-between mb-6">
-          <Button variant="ghost" onClick={() => navigate('/parks')}>
-            <ArrowLeft className="w-4 h-4 mr-2" />
-            Back to Parks
-          </Button>
-          
+        {/* Edit Button */}
+        <div className="flex justify-end mb-6">
           <Button 
             variant="outline"
             onClick={() => requireAuth(() => setIsEditParkModalOpen(true), "Sign in to edit this park")}