P4 integrated performance development

Purpose: recompute a defined updated configuration, preserving the P3.7/P3.8/P3.9
source releases. Physical measurements remain zero. Numerical closure and a
specified design are distinct from measured hardware validation.

Work: full-event mass and shared electrical loads; motion-dependent camber
actuation; spatial suspension/steering geometry; body-fitted flow mesh and
computed forces; acceleration, braking and power-equilibrium speed comparisons.

