disler/ten-levels-of-jev ? reverse-engineered prompt

Build me a TypeScript project that teaches the idea of Jev through ten increasingly powerful examples, starting with a simple smart yes or no decision and ending with an agent that can decide to use Jev on its own.

I want a small interactive lab for the browser plus a terminal based runner so I can try each level live. Each level should have a few example options, clear explanations, and real outputs from the decision engine, not just mock text. It should feel like a hands on playground for judging messages, routing requests, scoring risk, checking confidence, gating tool use, and reading lots of files safely.

Please include a clean way to run everything locally, offline tests for the deterministic cases, and support for live runs when an API key is available. Make the setup easy to follow, and if you need current docs for any tools, look them up online.