FSD v14.3.7 Rollout and Improvements

v14.3.7 rolling out with lane biasing, small animal handling, MLIR compiler rewrite, unified model. Early reviews positive, accident avoidance story. But regressions (brake stuttering on HW4) and HW3 limitations persist. New reports of HW3 computer failures from v14 Lite raise reliability concerns. Incremental progress but not a major shift.