Simplify error handling in CreateJob response

Refactored the CreateJob method to decode the response body into the Job struct before checking for error status codes. Error messages are now extracted directly from the Job struct, removing redundant error parsing logic.

pkg/cmd/agent-task/capi/job.go

@@ -79,24 +79,16 @@ func (c *CAPIClient) CreateJob(ctx context.Context, owner, repo, problemStatemen
 		return nil, err
 	}
 	defer res.Body.Close()
-	if res.StatusCode != http.StatusCreated && res.StatusCode != http.StatusOK { // accept 201 or 200
-		// Attempt to parse error body for message
-		var er struct {
-			Error struct {
-				Message string `json:"message"`
-			} `json:"error"`
-		}
-		_ = json.NewDecoder(res.Body).Decode(&er)
-		msg := er.Error.Message
-		if msg == "" {
-			msg = res.Status
-		}
-		return nil, fmt.Errorf("failed to create job: %s", msg)
-	}
+
 	var j Job
 	if err := json.NewDecoder(res.Body).Decode(&j); err != nil {
 		return nil, fmt.Errorf("failed to decode create job response: %w", err)
 	}
+
+	if res.StatusCode != http.StatusCreated && res.StatusCode != http.StatusOK { // accept 201 or 200
+		return nil, fmt.Errorf("failed to create job: %s", j.ErrorInfo.Message)
+	}
+
 	return &j, nil
 }