feat: 미션 판정 (완료/채점) — 입고 게임 최소 루프 완성

- MissionManager: 슬롯 감시 → 전부 정답 시 완료, 점수/오답/시간 표시, R키 재시작
- PutawaySlot: Changed 이벤트로 상태 변화 알림
- MissionSetup: Mission 오브젝트 + MissionManager 추가

이동→집기→적치→정답판정→완료/채점 한 판 루프 완성.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Assets/Scripts/Gameplay/MissionManager.cs

@@ -0,0 +1,105 @@
+using UnityEngine;
+using UnityEngine.SceneManagement;
+using UnityEngine.InputSystem;
+
+namespace SinoWms.Gameplay
+{
+    /// <summary>
+    /// 씬의 모든 적치 슬롯을 감시해 미션 진행/완료를 판정한다.
+    /// 모든 슬롯이 정답으로 채워지면 완료 처리하고 점수(정답·오답·시간)를 표시한다.
+    /// </summary>
+    public class MissionManager : MonoBehaviour
+    {
+        [SerializeField] private float targetSeconds = 60f;   // 시간 보너스 기준
+        private const int ScorePerSlot = 100;
+        private const int MistakePenalty = 25;
+
+        private PutawaySlot[] _slots;
+        private float _startTime;
+        private int _mistakes;
+        private bool _completed;
+        private int _finalScore;
+        private float _elapsedAtComplete;
+
+        private GUIStyle _hudStyle;
+        private GUIStyle _panelStyle;
+
+        private void Start()
+        {
+            _slots = Object.FindObjectsByType<PutawaySlot>(FindObjectsSortMode.None);
+            _startTime = Time.time;
+            foreach (var s in _slots)
+                s.Changed += OnSlotChanged;
+        }
+
+        private void OnDestroy()
+        {
+            if (_slots == null) return;
+            foreach (var s in _slots)
+                if (s != null) s.Changed -= OnSlotChanged;
+        }
+
+        private void Update()
+        {
+            if (_completed && (Keyboard.current?.rKey.wasPressedThisFrame ?? false))
+                SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
+        }
+
+        private void OnSlotChanged(PutawaySlot slot)
+        {
+            if (_completed) return;
+
+            // 오답 적치는 누적 집계(교육 감점용)
+            if (slot.IsOccupied && !slot.IsCorrect)
+                _mistakes++;
+
+            int correct = 0;
+            foreach (var s in _slots)
+                if (s.IsCorrect) correct++;
+
+            if (correct == _slots.Length)
+                Complete(correct);
+        }
+
+        private void Complete(int correct)
+        {
+            _completed = true;
+            _elapsedAtComplete = Time.time - _startTime;
+
+            int score = correct * ScorePerSlot - _mistakes * MistakePenalty;
+            if (_elapsedAtComplete < targetSeconds)
+                score += Mathf.RoundToInt((1f - _elapsedAtComplete / targetSeconds) * 50f);
+            _finalScore = Mathf.Max(0, score);
+        }
+
+        private int CorrectCount()
+        {
+            int c = 0;
+            foreach (var s in _slots)
+                if (s != null && s.IsCorrect) c++;
+            return c;
+        }
+
+        private void OnGUI()
+        {
+            _hudStyle ??= new GUIStyle(GUI.skin.box) { fontSize = 18, alignment = TextAnchor.MiddleCenter };
+            _panelStyle ??= new GUIStyle(GUI.skin.box) { fontSize = 22, alignment = TextAnchor.MiddleCenter };
+
+            if (_slots == null || _slots.Length == 0) return;
+
+            if (!_completed)
+            {
+                string hud = $"적치 {CorrectCount()}/{_slots.Length}   오답 {_mistakes}";
+                GUI.Label(new Rect(Screen.width / 2f - 130f, 64f, 260f, 32f), hud, _hudStyle);
+                return;
+            }
+
+            float w = 360f, h = 160f;
+            var rect = new Rect(Screen.width / 2f - w / 2f, Screen.height / 2f - h / 2f, w, h);
+            string text =
+                $"미션 완료!\n\n점수 {_finalScore}점\n" +
+                $"소요 {_elapsedAtComplete:0}초 · 오답 {_mistakes}건\n\nR: 다시 하기";
+            GUI.Label(rect, text, _panelStyle);
+        }
+    }
+}

Assets/Scripts/Gameplay/MissionManager.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 27f48d56c8f68491ba5b07b4887165cc

Assets/Scripts/Gameplay/PutawaySlot.cs

@@ -21,6 +21,9 @@ namespace SinoWms.Gameplay
         private static readonly Color Correct = new Color(0.3f, 0.8f, 0.4f);
         private static readonly Color Wrong = new Color(0.85f, 0.3f, 0.3f);
 
+        /// <summary>적치/제거 등 상태가 바뀌면 발생(미션 판정용).</summary>
+        public event System.Action<PutawaySlot> Changed;
+
         public Carryable Occupant { get; private set; }
         public bool IsOccupied => Occupant != null;
         public bool IsCorrect =>
@@ -55,6 +58,7 @@ namespace SinoWms.Gameplay
         {
             if (pad == null) return;
             pad.material.color = !IsOccupied ? Empty : (IsCorrect ? Correct : Wrong);
+            Changed?.Invoke(this);
         }
     }
 }