linear_sphere_sweep returns only a capped hit table (no count) and its
slots flood with world-geometry actors, starving real enemies behind the
player (crash: nil num_hits compare; then silent no-marks). Candidates
now come from smart_tag_system._unit_extension_data (alive, breed-typed,
in range) — geometry can't interfere, LOS gates still apply unless
omni_mark_ignore_los. OMNI-DIAG candidate/reject logging kept, gated on
debug_mode.
michael
bd8b3f2f72