Stop Writing AI Prompts From Scratch: A Developer's System for Reusable Prompt Templates

You open Cursor. You need to refactor a service. You type something like: "Hey, can you refactor this function to be cleaner?" The AI gives you something mediocre. Try again. The output improves. You get what you need - but you've spent four minutes writing a prompt you'll write again tomorrow, and next week, and every time a similar task comes up. This is the hidden tax on AI-assisted development. Not API costs. Not context limits. Most developers treat every AI interaction as a blank slate. Senior engineers don't. They've built systems.