Everything your robot has learned, at once, against the clock. This is the robot you built, and for the first time it runs on the library you built.

Here is the route you planned, and somebody left crates on it. One controller has to do it all: follow the route with the PurePursuit you wrote in lesson 8, imported straight from mybot; see the crates with the three distance rays from lesson 6; and switch between those behaviors the way lesson 9 taught you, with a mode latched on self.state from tick to tick.

Neither behavior survives out there alone. A follower that never looks up plows straight into the first crate, and a dodger that never looks back loses the route. And this time you are scored: the clock starts at reset, a crash sends you back to the start, and the clock does not care.

Read the skeleton in the editor. The import line pulls three pieces from your library; if one is missing, the banner above the editor offers the vetted reference, so nothing blocks you. The glue builds your PurePursuit in __init__ and starts in follow mode. The only thing it cannot do yet is change its mind.