Complete error handling cycle

Implement comprehensive error handling that covers prevention, recovery, and diagnosis:

1. Prevent errors through thorough validation before enabling actions
   • Validate that all required data exists before allowing operations

     // Instead of just checking mime type and filename
     function isDownloadable(index, key) {
     const { mimeType, fileName } = binaryData[index][key];
     return !!(mimeType && fileName && (binaryData[index][key].id || binaryData[index][key].data));
     }
     

2. Ensure recovery by properly resetting state flags in finally blocks
   • Don’t leave UI in disabled states after operations complete or fail

     try {
     cancellingTestRun.value = true;
     await evaluationStore.cancelTestRun(workflowId, runId);
     } catch (error) {
     // Error handling
     } finally {
     cancellingTestRun.value = false;
     }
     

3. Enable diagnosis by preserving and exposing error details
   • Log complete error objects, not just generic messages

     } catch (error) {
     console.error(chalk.red(`An error occurred during the build process: ${error}`));
     }
     

Each layer of error handling contributes to a more robust application that prevents user frustration and simplifies troubleshooting.