The Prompt Should Not Own The Workflow LLMs are good at reading messy documents. That is why they are useful in document workflows at all. They can identify a renewal date in a contract, summarize a claims packet, classify an invoice, or turn a supplier form into structured fields. The trap is letting that usefulness expand until the prompt owns the whole workflow. At first, the prompt only says what to extract. Then it starts deciding field names. Then it decides which values are safe to use. Then it chooses whether to update a database, whether to generate a customer report, and whether to send the result downstream. The workflow becomes a long instruction string with side effects attached. That can work in a demo. It is a fragile way to run a product.…