Opt-in Input.PdMouseAim (F10 "PD mouse aim"): in aim mode the port only
accumulates the mouse position and the game's own crosshair integrator is
driven by it with PD's mouse damp (0.01), instead of GEPD's per-poll
overwrite fighting the weapon's ~0.8 per-tick damp (write*damp^k jitter).
Hook: #ifdef PORT block in sub_GAME_7F067FBC (aim-mode branch only),
identity when off; Rule-2 sign-off given by the maintainer.
Integrated locally from PR #96 with review fixes: finding renumbered
D337 -> D332; GE_PDMOUSEAIM lookup cached (GE_ENVSTR; it ran every poll
and aim tick); "live env" comments corrected. Windows build clean; bunker1
golden 3/3. Feel A/B owed.