Fix milestone entity name resolution

src/lib/submissionChangeDetection.ts

@@ -369,6 +369,49 @@ export async function detectChanges(
         has_cloudflare_url: !!itemData.cloudflare_image_url
       });
     }
+  } else if (item.item_type === 'milestone') {
+    // Milestone submissions reference entity_id and entity_type
+    // Need to fetch the entity name from the database
+    if (itemData.entity_type && itemData.entity_id) {
+      try {
+        const entityType = itemData.entity_type;
+        const entityId = itemData.entity_id;
+        
+        if (entityType === 'park') {
+          const { data } = await supabase.from('parks').select('name').eq('id', entityId).maybeSingle();
+          if (data?.name) {
+            entityName = `${data.name} - ${itemData.title || 'Milestone'}`;
+          }
+        } else if (entityType === 'ride') {
+          const { data: rideData } = await supabase
+            .from('rides')
+            .select('name, park:parks(name)')
+            .eq('id', entityId)
+            .maybeSingle();
+          
+          if (rideData?.name) {
+            const parkName = rideData.park?.name;
+            entityName = parkName 
+              ? `${rideData.name} at ${parkName} - ${itemData.title || 'Milestone'}`
+              : `${rideData.name} - ${itemData.title || 'Milestone'}`;
+          }
+        }
+        
+        // If lookup failed, fall back to title with entity type
+        if (entityName === 'Unknown' && itemData.title) {
+          entityName = `${formatEntityType(entityType)} - ${itemData.title}`;
+        }
+      } catch (err) {
+        console.error('Error fetching entity name for milestone:', err);
+        // Fall back to just the title if database lookup fails
+        if (itemData.title) {
+          entityName = itemData.title;
+        }
+      }
+    } else if (itemData.title) {
+      // No entity reference, just use the milestone title
+      entityName = itemData.title;
+    }
   } else {
     // For regular entities, use name field
     entityName = itemData.name || originalData?.name || 'Unknown';