feat(data): per-level spell slots for 8 PCs

tests/test_spells.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from pathlib import Path
 
-from pf1e_simulator.combat import Action, CombatantState, CombatEngine
+from pf1e_simulator.combat import Action, CombatantState, CombatEngine, _choose_spell_action
 from pf1e_simulator.dice import parse_dice
 from pf1e_simulator.grid import Grid
 from pf1e_simulator.map import MapSpec, TerrainType
@@ -436,3 +436,28 @@ class TestSummonMonster:
         assert summoned[0].hp == 15
         # Check transcript mentions summon
         assert any("summon" in line.lower() for line in engine._transcript)
+
+
+class TestSpellSlots:
+    """Given: a caster with per-level spell_slots
+    When: a spell of a level is cast
+    Then: that level's slot count decrements and exhausted levels block further casts."""
+
+    def test_slot_depense(self) -> None:
+        caster = _make_caster().model_copy(update={"spell_slots": {1: 2, 2: 1}})
+        target = _make_target(hp_max=100)
+        engine, c, t = _make_engine(caster, target, [3])
+        engine._cast_spell(c, t, "Magic Missile")  # level 1
+        assert c.spell_slots_left[1] == 1
+        assert c.spell_slots_left[2] == 1
+
+    def test_slots_epuises(self) -> None:
+        caster = _make_caster().model_copy(
+            update={"spell_slots": {1: 1}, "spells": ["Magic Missile"]}
+        )
+        target = _make_target(hp_max=100)
+        engine, c, t = _make_engine(caster, target, [3])
+        assert _choose_spell_action(engine, c, t) is not None
+        engine._cast_spell(c, t, "Magic Missile")  # spends the only level-1 slot
+        assert c.spell_slots_left[1] == 0
+        assert _choose_spell_action(engine, c, t) is None