feat: Implement comprehensive entity submission architecture

src/pages/ParkDetail.tsx

@@ -215,19 +215,8 @@ export default function ParkDetail() {
         fetchParkData();
       } else {
         // Regular users submit for moderation
-        const { error } = await supabase
-          .from('content_submissions')
-          .insert({
-            user_id: user.id,
-            submission_type: 'park_edit',
-            status: 'pending',
-            content: {
-              park_id: park.id,
-              ...parkData
-            }
-          });
-
-        if (error) throw error;
+        const { submitParkUpdate } = await import('@/lib/entitySubmissionHelpers');
+        await submitParkUpdate(park.id, parkData, user.id);
 
         toast({
           title: "Edit Submitted",