Function classify_shape 

pub fn classify_shape(plan: &Plan) -> MissionShape

Classify a plan’s shape from its validation contract alone (observable before any run happens).

AgentJudgement assertions are re-evaluated by validators and the orchestrator against the entire, growing mission diff on every validation pass — m-d341a7 had 2 judgement assertions over a 1074-line doc and that alone drove 21.5M cache-read tokens across 17 judgement turns. Missions that instead gate on a build/test/lint command bound that cost (the command runs once, deterministically, regardless of diff size), so any Command assertion invoking cargo/npm/pytest/go test/make wins over an AgentJudgement signal — the code-change shape doesn’t scale with diff size the way a judgement-only contract does.