fix(combat): witch hex trigger uses the SRD close range scaled by caster level (25 ft + 5 ft per 2 levels, extracted as spells.close_range_ft and shared with spell_range_ft) instead of the fixed _HEX_RANGE_FT 25 - a level-5 witch reaches 35 ft; + scaling regression test

src/pf1e_simulator/combat.py

@@ -141,6 +141,7 @@ from pf1e_simulator.spells import (
     SaveType,
     SpellEffect,
     SummonEffect,
+    close_range_ft,
     save_descriptors_for_effects,
     spell_range_ft,
     spell_save_descriptors,
@@ -8884,7 +8885,6 @@ def _normal_actions(
 
 
 _GROUPED_ENEMY_COUNT = 2
-_HEX_RANGE_FT = 25
 
 
 def _emit_channel_energy(
@@ -8910,12 +8910,17 @@ def _emit_channel_energy(
 def _emit_hex(
     engine: CombatEngine, state: CombatantState, target: CombatantState | None
 ) -> bool:
-    """True when nairda should hex: resource available and target within close range."""
+    """True when nairda should hex: resource available and target within close range.
+
+    APG hexes carry a close range, which scales with the caster level
+    (SRD, Magic - Range: "Close - 25 ft. + 5 ft. per 2 caster levels").
+    """
     if state.resources_left.get("hexes", 0) <= 0:
         return False
     if target is None or not target.active:
         return False
-    return engine.creature_distance(state, target) * _SQUARE_FT <= _HEX_RANGE_FT
+    dist_ft = engine.creature_distance(state, target) * _SQUARE_FT
+    return dist_ft <= close_range_ft(state.combatant.level)
 
 
 def _spell_combat_actions(