feat: Add admin display name to email signature

supabase/functions/send-admin-email-reply/index.ts

@@ -67,6 +67,15 @@ const handler = async (req: Request): Promise<Response> => {
       }, 400, corsHeaders);
     }
 
+    // Fetch admin's profile for signature
+    const { data: adminProfile } = await supabase
+      .from('profiles')
+      .select('display_name, username')
+      .eq('user_id', user.id)
+      .single();
+
+    const adminName = adminProfile?.display_name || adminProfile?.username || 'ThrillWiki Team';
+
     // Fetch submission
     const { data: submission, error: fetchError } = await supabase
       .from('contact_submissions')
@@ -87,10 +96,10 @@ const handler = async (req: Request): Promise<Response> => {
 
     const emailSignature = signatureSetting?.setting_value?.signature || '';
     
-    // Append signature to reply body if it exists
+    // Build signature with admin name + global signature
     const finalReplyBody = emailSignature 
-      ? `${replyBody}\n\n---\n${emailSignature}`
-      : replyBody;
+      ? `${replyBody}\n\n---\n${adminName}\n${emailSignature}`
+      : `${replyBody}\n\n---\n${adminName}`;
 
     // Rate limiting: max 10 replies per hour
     const oneHourAgo = new Date(Date.now() - 60 * 60 * 1000).toISOString();