Rebalance dispatch scoring for inspector level

Reduce the dispatch scoring bias created by inspector level so route quality is not sacrificed for near-miss level differences.

Transcript Context

Josh described a dispatch issue where inspector level is weighted so heavily that the system creates poor routes to avoid assigning a house that is only one level above an inspector's level. The example given was a level-one house causing a long drive even when a level-two house was nearby and would have been operationally reasonable. The team discussed that a perfect level match may currently be worth too many points, while being only one level off drops to zero, which distorts route decisions. The request is to revisit the weighting model so level still matters, but not enough to consistently create obviously bad routes.