Lab: Watch a Real Model Pick a Tool

You built the tool registry, the dispatcher and the reason-act-observe loop as deterministic code. The piece you stubbed out was the model deciding which tool to call. Watch a real model make that decision now, live on your device.

The on-device model is small, so expect rough edges. In a real agent your code parses the tool call it returns, runs the tool, feeds the result back, and loops, with the guards you wrote. The model decides; your code executes.