fix(combat): evaluate conditional stat modifiers with action context

src/pf1e_simulator/spells.py

@@ -108,6 +108,34 @@ def spell_range_ft(spell: SpellSpec, caster_level: int) -> int:
     return 400 + 40 * caster_level
 
 
+_FEAR_CONDITIONS = frozenset({"frightened", "panicked", "shaken", "cowering"})
+
+
+def save_descriptors_for_effects(effects: tuple[SpellEffect, ...]) -> frozenset[str]:
+    descriptors: set[str] = set()
+    for effect in effects:
+        if isinstance(effect, DamageEffect):
+            descriptors.update(effect.types)
+        elif isinstance(effect, ConditionEffect) and effect.condition_name in _FEAR_CONDITIONS:
+            descriptors.add("fear")
+        elif isinstance(effect, AreaEffect):
+            descriptors.update(save_descriptors_for_effects(effect.effects))
+    return frozenset(descriptors)
+
+
+def spell_save_descriptors(spell: SpellSpec) -> frozenset[str]:
+    """Spell save descriptors: effect-derived plus CRB school tags.
+
+    Enchantment is mind_affecting, divination is divination.
+    """
+    descriptors = set(save_descriptors_for_effects(spell.effects))
+    if spell.school == "enchantment":
+        descriptors.add("mind_affecting")
+    elif spell.school == "divination":
+        descriptors.add("divination")
+    return frozenset(descriptors)
+
+
 def _as_dict(value: Json) -> dict[str, Json]:
     if isinstance(value, dict):
         return value