feat: 드로그 BT 및 전투 패턴 재구성

- 드로그 BT를 페이즈 전환, 부활 트리거, 가중치 근접 패턴 중심으로 재구성

- 땅 울리기 및 콤보-기본기1_3 패턴/스킬/이펙트를 추가하고 기존 평타 파생 자산을 정리

- 드로그 행동 검증용 PlayMode/Editor 테스트와 관련 런타임 상태 추적을 추가

Assets/_Game/Tests/Editor/WeightedPatternSelectorTests.cs

@@ -0,0 +1,95 @@
+using NUnit.Framework;
+
+using UnityEngine;
+
+using Colosseum.AI;
+
+namespace Colosseum.Tests
+{
+    /// <summary>
+    /// 가중치 패턴 선택기의 후보 필터링과 가중치 분배를 검증합니다.
+    /// </summary>
+    public class WeightedPatternSelectorTests
+    {
+        [Test]
+        public void TrySelectPattern_ReadyCandidatesOnly_AppliesWeightsAfterFiltering()
+        {
+            BossPatternData first = ScriptableObject.CreateInstance<BossPatternData>();
+            BossPatternData second = ScriptableObject.CreateInstance<BossPatternData>();
+            BossPatternData third = ScriptableObject.CreateInstance<BossPatternData>();
+
+            try
+            {
+                WeightedPatternCandidate[] candidates =
+                {
+                    new WeightedPatternCandidate(first, 50f),
+                    new WeightedPatternCandidate(second, 30f),
+                    new WeightedPatternCandidate(third, 20f),
+                };
+
+                bool result = WeightedPatternSelector.TrySelectPattern(
+                    candidates,
+                    pattern => pattern != first,
+                    0.1f,
+                    out BossPatternData selectedPattern);
+
+                Assert.IsTrue(result, "준비된 후보가 있는데 선택에 실패했습니다.");
+                Assert.AreSame(second, selectedPattern, "준비되지 않은 후보를 제외한 뒤 첫 번째 가중치 후보가 선택되어야 합니다.");
+            }
+            finally
+            {
+                Object.DestroyImmediate(first);
+                Object.DestroyImmediate(second);
+                Object.DestroyImmediate(third);
+            }
+        }
+
+        [Test]
+        public void TrySelectPattern_UsesDeclaredWeightBands()
+        {
+            BossPatternData combo = ScriptableObject.CreateInstance<BossPatternData>();
+            BossPatternData pressure = ScriptableObject.CreateInstance<BossPatternData>();
+            BossPatternData tertiary = ScriptableObject.CreateInstance<BossPatternData>();
+            BossPatternData secondary = ScriptableObject.CreateInstance<BossPatternData>();
+            BossPatternData primary = ScriptableObject.CreateInstance<BossPatternData>();
+
+            try
+            {
+                WeightedPatternCandidate[] candidates =
+                {
+                    new WeightedPatternCandidate(combo, 26f),
+                    new WeightedPatternCandidate(pressure, 24f),
+                    new WeightedPatternCandidate(primary, 22f),
+                    new WeightedPatternCandidate(secondary, 16f),
+                    new WeightedPatternCandidate(tertiary, 12f),
+                };
+
+                Assert.AreSame(combo, Select(candidates, 0.20f));
+                Assert.AreSame(pressure, Select(candidates, 0.40f));
+                Assert.AreSame(primary, Select(candidates, 0.60f));
+                Assert.AreSame(secondary, Select(candidates, 0.80f));
+                Assert.AreSame(tertiary, Select(candidates, 0.95f));
+            }
+            finally
+            {
+                Object.DestroyImmediate(combo);
+                Object.DestroyImmediate(pressure);
+                Object.DestroyImmediate(tertiary);
+                Object.DestroyImmediate(secondary);
+                Object.DestroyImmediate(primary);
+            }
+        }
+
+        private static BossPatternData Select(WeightedPatternCandidate[] candidates, float roll)
+        {
+            bool result = WeightedPatternSelector.TrySelectPattern(
+                candidates,
+                pattern => pattern != null,
+                roll,
+                out BossPatternData selectedPattern);
+
+            Assert.IsTrue(result, "테스트용 선택이 실패했습니다.");
+            return selectedPattern;
+        }
+    }
+}