Function router_call_plan 

pub fn router_call_plan(
    requested: RouterCallReasoning,
    capability: &ReasoningCapability,
) -> RouterCallPlan

Decide what a Router call runs at, given what the operator configured and what the Router’s own route can express.

The configured value is honored wherever the route can express it. It is only moved by a capability fact — an always-thinking route that cannot honor off gets its own floor — and that move is recorded, never hidden.