Personalize and polish the pipeline

The onboarding classifier is working — it captures form data, prepares the classification input, determines the tier, and routes to the right branch. But the nodes still have generic names like "Agent" and "Edit Fields," and the enterprise branch leads nowhere.

You'll apply best practices by renaming nodes by function, then complete the pipeline by adding an Edit Fields node on the enterprise branch to set a welcome instruction, followed by a single Agent that drafts a premium welcome message mentioning a dedicated account manager.