Configuration Schema

Version: 4.0 Context: Tunable parameters for the Physics and Evolution engines.

1. SearchConfig (Simulated Annealing)

The SearchConfig struct controls the behavior of the optimizer.

Parameter	Type	Default	Description	Constraints
steps	usize	100,000	The maximum number of mutations to attempt.	Must be > 0.
start_temp	f32	100.0	Initial temperature. Higher values allow more chaotic jumps early on.	Must be >= 0.
end_temp	f32	0.01	Final temperature target. Determines the decay rate.	Must be >= 0.
seed	u64	42	The PRNG seed. Ensures deterministic runs for debugging.	None.
patience	usize	500	Number of steps without improvement before triggering a Reheat.	Must be > 0.
reheats	usize	3	How many times to spike the temperature back up if stuck in a local minimum.	Must be >= 0.
reheat_factor	f32	0.5	Multiplier for start_temp when reheating (e.g., 0.5 * 100.0 = 50.0).	Must be > 0.

2. Rubric (Scoring Weights)

The Rubric defines the "Personality" of the layout (e.g., Comfort vs Speed).

Parameter	Type	Description
sfb_weight	f32	Penalty for using the same finger twice in a row.
distance_weight	f32	Penalty for finger travel distance.
roll_weight	f32	Bonus (negative cost) for inward rolling motions.
redirect_weight	f32	Penalty for changing direction mid-stream (e.g., Left -> Right -> Left).