Address CodeRabbit feedback

- Add guard for missing upload token and fail fast with clear error message
- Remove duplicate summary emission from uploadFiles method
- Use actual upload token count instead of input array length for summary

Author: seynadio

components/zendesk/actions/update-ticket/update-ticket.mjs

@@ -128,7 +128,7 @@ export default {
       },
     });
 
-    const attachmentCount = attachments?.length || 0;
+    const attachmentCount = ticketComment.uploads?.length || 0;
     const summary = attachmentCount > 0 
       ? `Successfully updated ticket with ID ${response.ticket.id} with ${attachmentCount} attachment(s)`
       : `Successfully updated ticket with ID ${response.ticket.id}`;

components/zendesk/zendesk.app.mjs

@@ -347,9 +347,12 @@ export default {
             customSubdomain,
             step,
           });
-          uploadResults.push(result.upload.token);
+          const token = result?.upload?.token;
+          if (!token) {
+            throw new Error(`Upload API returned no token for ${attachment}`);
+          }
+          uploadResults.push(token);
         } catch (error) {
-          step.export("$summary", `Failed to upload file ${attachment}: ${error.message}`);
           throw error;
         }
       }