feat(combat): Phase L.1c add outbound combat actions

tests/AcDream.Core.Tests/Combat/CombatStateTests.cs

@@ -27,6 +27,40 @@ public sealed class CombatStateTests
         Assert.Equal(1f, state.GetHealthPercent(0xDEAD));
     }
 
+    [Fact]
+    public void CombatMode_UsesRetailAceBitValues()
+    {
+        Assert.Equal(1, (int)CombatMode.NonCombat);
+        Assert.Equal(2, (int)CombatMode.Melee);
+        Assert.Equal(4, (int)CombatMode.Missile);
+        Assert.Equal(8, (int)CombatMode.Magic);
+    }
+
+    [Fact]
+    public void SetCombatMode_TracksCurrentMode_AndFiresEvent()
+    {
+        var state = new CombatState();
+        CombatMode? seen = null;
+        state.CombatModeChanged += mode => seen = mode;
+
+        state.SetCombatMode(CombatMode.Missile);
+
+        Assert.Equal(CombatMode.Missile, state.CurrentMode);
+        Assert.Equal(CombatMode.Missile, seen);
+    }
+
+    [Fact]
+    public void OnCombatCommenceAttack_FiresAttackCommenced()
+    {
+        var state = new CombatState();
+        bool seen = false;
+        state.AttackCommenced += () => seen = true;
+
+        state.OnCombatCommenceAttack();
+
+        Assert.True(seen);
+    }
+
     [Fact]
     public void OnVictimNotification_FiresDamageTaken()
     {