Fix RPC call transaction mode

src/hooks/useModerationQueue.ts

@@ -325,13 +325,34 @@ export const useModerationQueue = (config?: UseModerationQueueConfig) => {
 
       const expiresAt = new Date(Date.now() + 15 * 60 * 1000);
       
-      const { data, error } = await supabase.rpc('claim_specific_submission', {
+      // Use direct fetch to force read-write transaction
-        p_submission_id: submissionId,
+      const supabaseUrl = 'https://api.thrillwiki.com';
-        p_moderator_id: user.id,
+      const supabaseKey = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6InlkdnRtbnJzenlicW5iY3FiZGN5Iiwicm9sZSI6ImFub24iLCJpYXQiOjE3NTgzMjYzNTYsImV4cCI6MjA3MzkwMjM1Nn0.DM3oyapd_omP5ZzIlrT0H9qBsiQBxBRgw2tYuqgXKX4';
-        p_lock_duration: '15 minutes',
+
+      const { data: sessionData } = await supabase.auth.getSession();
+      const token = sessionData.session?.access_token;
+
+      const response = await fetch(`${supabaseUrl}/rest/v1/rpc/claim_specific_submission`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+          'apikey': supabaseKey,
+          'Authorization': `Bearer ${token}`,
+          'Prefer': 'tx=commit', // Force read-write transaction
+        },
+        body: JSON.stringify({
+          p_submission_id: submissionId,
+          p_moderator_id: user.id,
+          p_lock_duration: '15 minutes',
+        }),
       });
 
-      if (error) throw error;
+      if (!response.ok) {
+        const errorData = await response.json().catch(() => ({ message: 'Failed to claim submission' }));
+        throw new Error(errorData.message || 'Failed to claim submission');
+      }
+
+      const data = await response.json();
 
       if (!data) {
         throw new Error('Submission is already claimed or no longer available');