Function evaluate_dogfood 

pub fn evaluate_dogfood(
    graph: &Graph,
    cases: &[GoldenCase],
    limit: usize,
    depth: usize,
    width: usize,
    max_nodes: usize,
    min_case_score: f64,
) -> DogfoodReport

Run a task-shaped dogfood suite across the agent loop: route -> focus context -> brief decomposition -> readiness projection.