PF1e (CRB "Natural Attacks"):
- Natural weapons (natural=true) get exactly one swing per full attack,
regardless of BAB (no BAB iteratives for natural attacks).
- Secondary natural attacks (secondary=true) attack at BAB -5; the
Multiattack feat reduces this to -2.
- Manifested in combat.py (_full_attack_weapon, _resolve_swing),
models.py (AttackSpec.natural/secondary), 6 data JSONs, 4 new tests,
and README documentation.
1461 passed, ruff clean, basedpyright 0 errors.
