fix(combat): channel energy targets living vs undead

tests/test_runner_spells.py

@@ -37,15 +37,19 @@ def test_monte_carlo_caster_pc_casts_spell() -> None:
     """oni (cleric) casts against data/spells/ once it drops below 50% HP.
 
     oni's known spells overlap the registry's heal spells (Cure Light/Moderate
-    Wounds); with enough damage taken it heals via cast_spell. The Monte Carlo
+    Wounds); with enough damage taken it heals via cast_spell. Channel energy is
+    stripped from the resource pool: it now heals living creatures in the burst,
+    so below 50% HP oni self-heals by channeling and never reaches the spell
+    branch — this test stays a pure spell-wiring check. The Monte Carlo
     loop mirrors run_encounter: build fresh states and one CombatEngine per run
     with the registry from SPELLS_DIR.
     """
+    oni = load_combatant(ONI).model_copy(update={"resources": {}})
     spec = EncounterSpec(
         map=load_map(MAP),
         round_cap=100,
         sides=(
-            Side(name="players", combatants=(load_combatant(ONI),), zone="A"),
+            Side(name="players", combatants=(oni,), zone="A"),
             Side(name="monsters", combatants=(load_combatant(GOBLIN),) * 4, zone="B"),
         ),
     )