fix(rules): correct the evil eye hex

PF1e (APG Evil Eye): the target takes -2 on ONE chosen option (AC, ability checks, attack rolls, saving throws or skill checks) for 3 rounds, and "A Will save reduces this to just 1 round" — it never negates. _hex_evil_eye applied shaken (-2 attack AND saves) for 1 round with the save negating entirely. It now adds a targeted -2 attack ActiveBuff for 3 rounds, or 1 round on a successful Will save. Simplification documented in README: the option choice is not modeled (attack rolls are the engine's target). The hex-DC behavioral test now reads the -2 attack (3r) transcript line.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

tests/test_class_abilities.py

@@ -255,6 +255,45 @@ def test_nairda_hex_spends_resource() -> None:
     assert me.resources_left["hexes"] == 4
 
 
+def test_evil_eye_failed_save_deals_minus_two_attack_three_rounds() -> None:
+    """APG Evil Eye: -2 on one chosen option, 3 rounds; Will does not negate.
+    Given: a target that fails the Will save (d20 2 +4 < DC 14)
+    When: the witch hexes it
+    Then: a -2 attack modifier is applied for 3 rounds (no shaken condition)."""
+    nairda = _combatant("nairda", resources={"hexes": 5})
+    goblin = _combatant("goblin", hp_max=6)
+    engine, me, enemy = _engine(nairda, [goblin], rng_queue=[2])
+
+    engine._execute(
+        me, Action(kind="hex", target_id=enemy[0].combatant.id, hex_name="evil_eye")
+    )
+
+    hex_buffs = [b for b in enemy[0].active_buffs if b.source.startswith("hex: evil_eye")]
+    assert len(hex_buffs) == 1
+    assert hex_buffs[0].rounds_left == 3
+    assert hex_buffs[0].modifiers == (StatModifier(target="attack", value=-2),)
+    assert not any(ac.condition.name == "shaken" for ac in enemy[0].active_conditions)
+
+
+def test_evil_eye_saved_deals_minus_two_attack_one_round() -> None:
+    """APG Evil Eye: "A Will save reduces this to just 1 round" — the penalty
+    still lands. Given: a target that saves (natural 20)
+    When: the witch hexes it
+    Then: the -2 attack modifier is applied for exactly 1 round."""
+    nairda = _combatant("nairda", resources={"hexes": 5})
+    goblin = _combatant("goblin", hp_max=6)
+    engine, me, enemy = _engine(nairda, [goblin], rng_queue=[20])
+
+    engine._execute(
+        me, Action(kind="hex", target_id=enemy[0].combatant.id, hex_name="evil_eye")
+    )
+
+    hex_buffs = [b for b in enemy[0].active_buffs if b.source.startswith("hex: evil_eye")]
+    assert len(hex_buffs) == 1
+    assert hex_buffs[0].rounds_left == 1
+    assert hex_buffs[0].modifiers == (StatModifier(target="attack", value=-2),)
+
+
 # --- tammara: deeds ---