feat: Implement item editing capability

src/lib/submissionItemsService.ts

@@ -388,6 +388,88 @@ async function updateSubmissionStatusAfterRejection(submissionId: string): Promi
   }
 }
 
+/**
+ * Edit a submission item - moderators edit directly, users auto-escalate
+ */
+export async function editSubmissionItem(
+  itemId: string,
+  newData: any,
+  userId: string
+): Promise<void> {
+  if (!userId) {
+    throw new Error('User authentication required to edit items');
+  }
+
+  // Get current item to preserve original_data
+  const { data: currentItem, error: fetchError } = await supabase
+    .from('submission_items')
+    .select('*, submission:content_submissions(user_id)')
+    .eq('id', itemId)
+    .single();
+
+  if (fetchError) throw fetchError;
+
+  // Check if user has moderator/admin permissions
+  const { data: userRoles } = await supabase
+    .from('user_roles')
+    .select('role')
+    .eq('user_id', userId);
+
+  const isModerator = userRoles?.some(r => 
+    ['moderator', 'admin', 'superuser'].includes(r.role)
+  );
+
+  // Preserve original_data if not already set
+  const originalData = currentItem.original_data || currentItem.item_data;
+
+  if (isModerator) {
+    // Moderators can edit directly
+    const { error: updateError } = await supabase
+      .from('submission_items')
+      .update({
+        item_data: newData,
+        original_data: originalData,
+        updated_at: new Date().toISOString(),
+      })
+      .eq('id', itemId);
+
+    if (updateError) throw updateError;
+
+    // Log admin action
+    await supabase
+      .from('admin_audit_log')
+      .insert({
+        admin_user_id: userId,
+        target_user_id: (currentItem.submission as any).user_id,
+        action: 'edit_submission_item',
+        details: {
+          item_id: itemId,
+          item_type: currentItem.item_type,
+          changes: 'Item data updated',
+        },
+      });
+  } else {
+    // Regular users: update data and auto-escalate
+    const { error: updateError } = await supabase
+      .from('submission_items')
+      .update({
+        item_data: newData,
+        original_data: originalData,
+        updated_at: new Date().toISOString(),
+      })
+      .eq('id', itemId);
+
+    if (updateError) throw updateError;
+
+    // Auto-escalate the parent submission
+    await escalateSubmission(
+      currentItem.submission_id,
+      `User requested edit to ${currentItem.item_type}`,
+      userId
+    );
+  }
+}
+
 /**
  * Escalate submission for admin review
  */