Refactor: Implement app-wide slug generation

src/lib/slugUtils.ts

@@ -2,16 +2,28 @@ import { supabase } from '@/integrations/supabase/client';
 
 /**
  * Generate a URL-safe slug from a name
+ * This is the canonical slug generation function used throughout the app
  */
 export function generateSlugFromName(name: string): string {
+  if (!name) return '';
+  
   return name
     .toLowerCase()
-    .replace(/[^a-z0-9\s-]/g, '')
-    .replace(/\s+/g, '-')
-    .replace(/-+/g, '-')
+    .replace(/[^a-z0-9\s-]/g, '') // Remove non-alphanumeric except spaces and hyphens
+    .replace(/\s+/g, '-')          // Replace spaces with hyphens
+    .replace(/-+/g, '-')           // Replace multiple hyphens with single hyphen
+    .replace(/^-+|-+$/g, '')       // Remove leading/trailing hyphens
     .trim();
 }
 
+/**
+ * Validate that a user has permission to edit slugs
+ * Only moderators should be able to manually edit slugs
+ */
+export function canEditSlug(isModerator: boolean): boolean {
+  return isModerator;
+}
+
 /**
  * Ensure slug is unique by checking database and appending number if needed
  */