actor_firing_blindly (actors.h), player_aim_projectile (aim_assist.h), projectile_kill_tracer (projectiles.h), unit_adjust_projectile_ray (units.h) and the remaining weapon datum flag bits. Removes the verbatim duplicate collision_surface_polygon prototype from collision_bsp.h; without that cleanup the two added declarations regress units::_unit_preprocess_node_orientations (declaration-count sensitivity, bisected). Full build with the weapons body: 0 regressions, parks clean.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
