UI 수정, 토글 기본값, Spawner 오디오 버그 수정

[SceneBuilder]
- 사용자 수동 조정 위치 반영 (AudioDropdown, RefreshBtn, FilePickerBtn, UrlInput, UrlDownloadBtn, 난이도 토글 4개, BackButton)
- MakeTMP 텍스트 정렬: MidlineLeft → Center
- MakePanel/Button/InputField/Dropdown: sprite = null 설정으로 흰색 배경 제거
- 버튼 텍스트 특수문자 → ASCII 대체 (→ > / ▼▶✕ 제거): NanumGothic SDF 미지원 문자 경고 해결
- 난이도 토글 4개 기본값 모두 true로 변경

[SongCreatorManager]
- Start()에서 토글 전체 꺼진 경우 자동으로 4개 모두 켜기 (씬 재빌드 없이 즉시 적용)

[Spawner]
- Awake(): playOnAwake = false, clip = null 설정 — Inspector 하드코딩 클립 자동 재생 차단
- InitGame(): AudioSource/GameSession null 체크, 파일 존재 확인, 경로 로그 추가
- audioSource.clip == null 후 yield break로 로드 실패 시 재생 방지

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitignore

@@ -75,3 +75,7 @@ crashlytics-build.properties
 /[Aa]ssets/[Ss]treamingAssets/aa/*
 
 # End of https://www.toptal.com/developers/gitignore/api/unity
+
+# 민감 정보 설정 파일
+/[Aa]ssets/[Ss]treamingAssets/nas_config.json
+/[Aa]ssets/[Ss]treamingAssets/nas_config.json.meta

Assets/Editor/VRBeatSaberSceneBuilder.cs

@@ -16,6 +16,188 @@ public static class VRBeatSaberSceneBuilder
 {
     private static GameObject s_cardPrefab;
 
+    // ══════════════════════════════════════════════════════════
+    // 뒤로가기 버튼 패치 (기존 씬에 추가)
+    // ══════════════════════════════════════════════════════════
+
+    [MenuItem("Tools/VRBeatSaber/뒤로가기 버튼 추가 (기존 씬 패치)")]
+    public static void PatchBackButtons()
+    {
+        if (!EditorSceneManager.SaveCurrentModifiedScenesIfUserWantsTo()) return;
+
+        // SongSelect: 뒤로(Intro) + DetailPanel 닫기(X)
+        PatchSceneWithBackButton(
+            "Assets/Scenes/SongSelect.unity",
+            () =>
+            {
+                FindAndBindBackButton<SongSelectManager>("backButton", "< 뒤로", new Vector2(-500, 310), new Vector2(130, 50));
+                AddDetailPanelCloseButton();
+            });
+
+        // SongCreator: 뒤로(Intro)
+        PatchSceneWithBackButton(
+            "Assets/Scenes/SongCreator.unity",
+            () => FindAndBindBackButton<SongCreatorManager>("backButton", "< 뒤로", new Vector2(-405, 345), new Vector2(130, 50)));
+
+        // MapEditorScene: 뒤로(SongCreator)
+        PatchSceneWithBackButton(
+            "Assets/Scenes/MapEditorScene.unity",
+            FindAndBindBackButtonOnMapEditor);
+
+        // Game: 뒤로(SongSelect) — 우측 상단 소형 버튼
+        PatchSceneWithBackButton(
+            "Assets/Scenes/Game.unity",
+            AddGameSceneBackButton);
+
+        AssetDatabase.Refresh();
+        EditorUtility.DisplayDialog("완료", "뒤로가기 버튼 추가 완료!\n\n추가된 버튼:\n- SongSelect: < 뒤로 + 상세패널 X 닫기\n- SongCreator: < 뒤로\n- MapEditorScene: < 뒤로\n- Game: < 뒤로", "확인");
+    }
+
+    private static void PatchSceneWithBackButton(string scenePath, System.Action patchAction)
+    {
+        if (!File.Exists(scenePath)) { Debug.LogWarning($"[SceneBuilder] 씬 없음: {scenePath}"); return; }
+        var scene = EditorSceneManager.OpenScene(scenePath, OpenSceneMode.Single);
+        patchAction();
+        EditorSceneManager.SaveScene(scene);
+        Debug.Log($"[SceneBuilder] 패치 완료: {scenePath}");
+    }
+
+    private static void FindAndBindBackButton<T>(string fieldName, string label, Vector2 pos, Vector2 size) where T : MonoBehaviour
+    {
+        var mgr = Object.FindObjectOfType<T>();
+        if (mgr == null) { Debug.LogWarning($"[SceneBuilder] {typeof(T).Name} 없음"); return; }
+
+        // 이미 있으면 건너뜀
+        var so = new SerializedObject(mgr);
+        if (so.FindProperty(fieldName)?.objectReferenceValue != null) return;
+
+        // Canvas 찾기
+        var canvas = Object.FindObjectOfType<Canvas>();
+        if (canvas == null) return;
+
+        var backGO  = MakeButton("BackButton", canvas.transform, label, pos, size);
+        backGO.GetComponent<UnityEngine.UI.Image>().color = new Color(0.18f, 0.18f, 0.18f);
+
+        Bind(so, fieldName, backGO.GetComponent<Button>());
+        so.ApplyModifiedProperties();
+    }
+
+    // SongDetailPanel 닫기(X) 버튼
+    private static void AddDetailPanelCloseButton()
+    {
+        var detail = Object.FindObjectOfType<SongDetailPanel>();
+        if (detail == null) { Debug.LogWarning("[SceneBuilder] SongDetailPanel 없음"); return; }
+
+        var so = new SerializedObject(detail);
+        if (so.FindProperty("closeButton")?.objectReferenceValue != null) return;
+
+        // DetailPanel의 RectTransform 우측 상단에 X 버튼 배치
+        var detailRT = detail.GetComponent<RectTransform>();
+        if (detailRT == null) return;
+
+        var closeGO = MakeButton("CloseButton", detail.transform, "✕", new Vector2(detailRT.sizeDelta.x / 2f - 30, detailRT.sizeDelta.y / 2f - 30), new Vector2(50, 50));
+        closeGO.GetComponent<Image>().color = new Color(0.6f, 0.15f, 0.15f);
+
+        Bind(so, "closeButton", closeGO.GetComponent<Button>());
+        so.ApplyModifiedProperties();
+    }
+
+    // Game씬 뒤로가기 버튼 (Canvas 없으면 생성)
+    private static void AddGameSceneBackButton()
+    {
+        var spawner = Object.FindObjectOfType<Spawner>();
+        if (spawner == null) { Debug.LogWarning("[SceneBuilder] Spawner 없음"); return; }
+
+        // Game씬에 Canvas가 있는지 확인, 없으면 생성
+        var canvas = Object.FindObjectOfType<Canvas>();
+        if (canvas == null)
+        {
+            var canvasGO = new GameObject("HUDCanvas");
+            var c = canvasGO.AddComponent<Canvas>();
+            c.renderMode = RenderMode.WorldSpace;
+            canvasGO.AddComponent<CanvasScaler>();
+
+            var trackedType = System.Type.GetType(
+                "UnityEngine.XR.Interaction.Toolkit.UI.TrackedDeviceGraphicRaycaster, Unity.XR.Interaction.Toolkit");
+            if (trackedType != null)
+                canvasGO.AddComponent(trackedType);
+            else
+                canvasGO.AddComponent<GraphicRaycaster>();
+
+            var rt = canvasGO.GetComponent<RectTransform>();
+            rt.sizeDelta = new Vector2(400, 80);
+            // 플레이어 앞 위쪽, 항상 보이는 위치
+            canvasGO.transform.position   = new Vector3(0f, 2.2f, 1.5f);
+            canvasGO.transform.localScale  = Vector3.one * 0.002f;
+            canvas = c;
+        }
+
+        // 이미 BackButton이 있으면 건너뜀
+        if (canvas.transform.Find("BackButton") != null) return;
+
+        var backGO = MakeButton("BackButton", canvas.transform, "< 뒤로", new Vector2(-130, 0), new Vector2(150, 60));
+        backGO.GetComponent<Image>().color = new Color(0.2f, 0.2f, 0.2f, 0.85f);
+
+        // Spawner에 backButton 필드가 없으므로 런타임 클릭 이벤트만 추가
+        // (Spawner는 Quest B버튼용 InputActionReference 사용, 버튼은 클릭 처리 필요)
+        // → GameBackButton 컴포넌트로 처리
+        var handler = backGO.AddComponent<GameBackButton>();
+        var sso = new SerializedObject(handler);
+        var targetProp = sso.FindProperty("targetScene");
+        if (targetProp != null) targetProp.stringValue = "SongSelect";
+        sso.ApplyModifiedProperties();
+    }
+
+    private static void FindAndBindBackButtonOnMapEditor()
+    {
+        var mgr = Object.FindObjectOfType<MapEditor>();
+        if (mgr == null) { Debug.LogWarning("[SceneBuilder] MapEditor 없음"); return; }
+
+        var so = new SerializedObject(mgr);
+        if (so.FindProperty("backButton")?.objectReferenceValue != null) return;
+
+        var canvas = Object.FindObjectOfType<Canvas>();
+        if (canvas == null)
+        {
+            // MapEditorScene에 Canvas가 없을 수 있으므로 직접 생성
+            var canvasGO = new GameObject("Canvas");
+            var c = canvasGO.AddComponent<Canvas>();
+            c.renderMode = RenderMode.WorldSpace;
+            canvasGO.AddComponent<CanvasScaler>();
+            canvasGO.AddComponent<GraphicRaycaster>();
+            var rt = canvasGO.GetComponent<RectTransform>();
+            rt.sizeDelta = new Vector2(200, 60);
+            canvasGO.transform.position = new Vector3(-0.8f, 1.8f, 2f);
+            canvasGO.transform.localScale = Vector3.one * 0.002f;
+            canvas = canvasGO.GetComponent<Canvas>();
+        }
+
+        var backGO = MakeButton("BackButton", canvas.transform, "< 뒤로", new Vector2(0, 0), new Vector2(180, 55));
+        Bind(so, "backButton", backGO.GetComponent<Button>());
+        so.ApplyModifiedProperties();
+    }
+
+    [MenuItem("Tools/VRBeatSaber/씬 재빌드 (SongCreator + SongSelect)")]
+    public static void RebuildCreatorAndSelect()
+    {
+        if (!EditorSceneManager.SaveCurrentModifiedScenesIfUserWantsTo()) return;
+
+        EnsureFolder("Assets/Scenes");
+        EnsureFolder("Assets/Prefab");
+
+        s_cardPrefab = AssetDatabase.LoadAssetAtPath<GameObject>("Assets/Prefab/SongCard.prefab");
+        if (s_cardPrefab == null) s_cardPrefab = CreateSongCardPrefab();
+
+        BuildSongSelectScene();
+        BuildSongCreatorScene();
+
+        AssetDatabase.Refresh();
+        EditorUtility.DisplayDialog("완료",
+            "SongSelect + SongCreator 씬 재빌드 완료!\n\n" +
+            "Inspector에서 NasPublisher 비밀번호를 확인하세요.",
+            "확인");
+    }
+
     [MenuItem("Tools/VRBeatSaber/전체 자동 설정 (한 번만 실행)")]
     public static void SetupAll()
     {
@@ -140,6 +322,7 @@ public static class VRBeatSaberSceneBuilder
 
         // 탭
         var tabPanel    = MakePanel("TabPanel",    canvas.transform, new Vector2(0, 310),   new Vector2(1180, 60));
+        var backBtnSS   = MakeButton("BackButton",  tabPanel.transform, "< 뒤로", new Vector2(-500, 0), new Vector2(130, 50));
         var tabAllBtn   = MakeButton("TabAllBtn",   tabPanel.transform, "전체",   new Vector2(-290, 0), new Vector2(200, 50));
         var tabOwnedBtn = MakeButton("TabOwnedBtn", tabPanel.transform, "보유중", new Vector2(-80,  0), new Vector2(200, 50));
 
@@ -156,20 +339,22 @@ public static class VRBeatSaberSceneBuilder
         var infoTxt   = MakeTMP("InfoText",   detailGO.transform, "BPM | 길이", new Vector2(0, 160),  new Vector2(640, 30), 18);
 
         var diffPanel = MakePanel("DiffPanel", detailGO.transform, new Vector2(0, 90), new Vector2(640, 60));
-        var btnEasy   = MakeButton("EasyBtn",   diffPanel.transform, "Easy",   new Vector2(-240, 0), new Vector2(140, 50));
+        var btnNorm   = MakeButton("NormalBtn",     diffPanel.transform, "Normal",   new Vector2(-240, 0), new Vector2(140, 50));
-        var btnNorm   = MakeButton("NormalBtn", diffPanel.transform, "Normal", new Vector2(-80,  0), new Vector2(140, 50));
+        var btnHard   = MakeButton("HardBtn",       diffPanel.transform, "Hard",     new Vector2(-80,  0), new Vector2(140, 50));
-        var btnHard   = MakeButton("HardBtn",   diffPanel.transform, "Hard",   new Vector2(80,   0), new Vector2(140, 50));
+        var btnExp    = MakeButton("ExpertBtn",     diffPanel.transform, "Expert",   new Vector2(80,   0), new Vector2(140, 50));
-        var btnExp    = MakeButton("ExpertBtn", diffPanel.transform, "Expert", new Vector2(240,  0), new Vector2(140, 50));
+        var btnExpP   = MakeButton("ExpertPlusBtn", diffPanel.transform, "Expert+",  new Vector2(240,  0), new Vector2(140, 50));
 
         var actPanel = MakePanel("ActionPanel", detailGO.transform, new Vector2(0, 15), new Vector2(640, 60));
-        var dlBtn    = MakeButton("DownloadBtn", actPanel.transform, "▼ 다운로드", new Vector2(-165, 0), new Vector2(290, 50));
+        var dlBtn    = MakeButton("DownloadBtn", actPanel.transform, "다운로드", new Vector2(-165, 0), new Vector2(290, 50));
         var delBtn   = MakeButton("DeleteBtn",   actPanel.transform, "삭제",       new Vector2(165,  0), new Vector2(290, 50));
 
         var progGroup  = MakePanel("ProgressGroup",  detailGO.transform, new Vector2(0, -50), new Vector2(640, 40));
         var progSlider = MakeSlider("ProgressSlider", progGroup.transform, new Vector2(-70, 0), new Vector2(480, 28));
         var progText   = MakeTMP("ProgressText", progGroup.transform, "0%", new Vector2(275, 0), new Vector2(100, 30), 16);
 
-        var playBtn = MakeButton("PlayButton", detailGO.transform, "▶  플레이", new Vector2(0, -140), new Vector2(300, 65));
+        var playBtn   = MakeButton("PlayButton",   detailGO.transform, "플레이",  new Vector2(0, -140), new Vector2(300, 65));
+        var closeBtn  = MakeButton("CloseButton",  detailGO.transform, "X",        new Vector2(290, 270), new Vector2(50, 50));
+        closeBtn.GetComponent<Image>().color = new Color(0.6f, 0.15f, 0.15f);
 
         var loadingOvr = MakePanel("LoadingOverlay", canvas.transform, Vector2.zero, new Vector2(1200, 700));
         loadingOvr.GetComponent<Image>().color = new Color(0, 0, 0, 0.75f);
@@ -188,13 +373,14 @@ public static class VRBeatSaberSceneBuilder
         Bind(dso, "titleText",      titleTxt);
         Bind(dso, "artistText",     artistTxt);
         Bind(dso, "infoText",       infoTxt);
-        Bind(dso, "btnEasy",        btnEasy.GetComponent<Button>());
         Bind(dso, "btnNormal",      btnNorm.GetComponent<Button>());
         Bind(dso, "btnHard",        btnHard.GetComponent<Button>());
         Bind(dso, "btnExpert",      btnExp.GetComponent<Button>());
+        Bind(dso, "btnExpertPlus",  btnExpP.GetComponent<Button>());
         Bind(dso, "downloadButton", dlBtn.GetComponent<Button>());
         Bind(dso, "deleteButton",   delBtn.GetComponent<Button>());
         Bind(dso, "playButton",     playBtn.GetComponent<Button>());
+        Bind(dso, "closeButton",    closeBtn.GetComponent<Button>());
         Bind(dso, "progressGroup",  progGroup);
         Bind(dso, "progressSlider", progSlider);
         Bind(dso, "progressText",   progText);
@@ -203,6 +389,7 @@ public static class VRBeatSaberSceneBuilder
         // SongSelectManager 바인딩
         var mgr = canvas.AddComponent<SongSelectManager>();
         var mso = new SerializedObject(mgr);
+        Bind(mso, "backButton",      backBtnSS.GetComponent<Button>());
         Bind(mso, "tabAllBtn",       tabAllBtn.GetComponent<Button>());
         Bind(mso, "tabOwnedBtn",     tabOwnedBtn.GetComponent<Button>());
         Bind(mso, "cardContainer",   cardContainer);
@@ -236,48 +423,69 @@ public static class VRBeatSaberSceneBuilder
         var publisher = gm.AddComponent<NasPublisher>();
         var scMgr     = gm.AddComponent<SongCreatorManager>();
 
-        var canvas = MakeCanvas(new Vector2(900, 760), new Vector3(0, 1.5f, 2f));
+        var canvas = MakeCanvas(new Vector2(900, 800), new Vector3(0, 1.5f, 2f));
 
-        MakeTMP("TitleLabel", canvas.transform, "노래 만들기", new Vector2(0, 345), new Vector2(860, 55), 32);
+        MakeTMP("TitleLabel", canvas.transform, "노래 만들기", new Vector2(0, 365), new Vector2(860, 55), 32);
 
-        var audioPanel = MakePanel("AudioPanel", canvas.transform, new Vector2(0, 250), new Vector2(860, 90));
+        // 음원 선택 (드롭다운 + 새로고침)
-        var audioDd    = MakeDropdown("AudioDropdown", audioPanel.transform, new Vector2(-120, 0), new Vector2(540, 60));
+        var audioPanel = MakePanel("AudioPanel", canvas.transform, new Vector2(0, 280), new Vector2(860, 80));
-        var refreshBtn = MakeButton("RefreshBtn", audioPanel.transform, "새로고침", new Vector2(255, 0), new Vector2(160, 58));
+        var audioDd    = MakeDropdown("AudioDropdown", audioPanel.transform, new Vector2(-98, 0), new Vector2(540, 55));
-        var pathHint   = MakeTMP("PathHint", canvas.transform, "", new Vector2(0, 195), new Vector2(860, 28), 13);
+        var refreshBtn = MakeButton("RefreshBtn", audioPanel.transform, "새로고침", new Vector2(295, 0), new Vector2(160, 52));
+        var pathHint   = MakeTMP("PathHint", canvas.transform, "", new Vector2(0, 230), new Vector2(860, 26), 12);
+        pathHint.color = new Color(0.6f, 0.6f, 0.6f);
 
-        var metaPanel   = MakePanel("MetaPanel",   canvas.transform, new Vector2(0, 105), new Vector2(860, 110));
+        // 음원 추가 (파일 선택 / URL 다운로드)
-        var titleInput  = MakeInputField("TitleInput",  metaPanel.transform, "곡 제목",  new Vector2(-280, 0), new Vector2(255, 55));
+        var addPanel     = MakePanel("AddPanel", canvas.transform, new Vector2(0, 155), new Vector2(860, 100));
-        var artistInput = MakeInputField("ArtistInput", metaPanel.transform, "아티스트", new Vector2(0,    0), new Vector2(255, 55));
+        var addStatusTxt = MakeTMP("AddStatusText", addPanel.transform, "", new Vector2(90, 25), new Vector2(530, 36), 13);
-        var bpmInput    = MakeInputField("BpmInput",    metaPanel.transform, "BPM",      new Vector2(280,  0), new Vector2(255, 55));
+        addStatusTxt.color = new Color(0.7f, 0.9f, 0.7f);
+        var urlField    = MakeInputField("UrlInput", addPanel.transform, "MP3 직접 URL 입력", new Vector2(-100, 18), new Vector2(600, 40));
+        var urlDlBtn    = MakeButton("UrlDownloadBtn", addPanel.transform, "URL 다운로드", new Vector2(305, 20), new Vector2(195, 40));
+        var filePickBtn  = MakeButton("FilePickerBtn",  addPanel.transform, "파일 선택",     new Vector2(304, -29), new Vector2(195, 40));
 
-        var diffPanel  = MakePanel("DiffPanel", canvas.transform, new Vector2(0, -15), new Vector2(860, 65));
+        // 메타데이터
-        var togEasy    = MakeToggle("EasyToggle",   diffPanel.transform, "Easy",   new Vector2(-310, 0));
+        var metaPanel   = MakePanel("MetaPanel",   canvas.transform, new Vector2(0, 55), new Vector2(860, 80));
-        var togNormal  = MakeToggle("NormalToggle", diffPanel.transform, "Normal", new Vector2(-155, 0));
+        var titleInput  = MakeInputField("TitleInput",  metaPanel.transform, "곡 제목",  new Vector2(-280, 0), new Vector2(255, 50));
-        var togHard    = MakeToggle("HardToggle",   diffPanel.transform, "Hard",   new Vector2(0,    0));
+        var artistInput = MakeInputField("ArtistInput", metaPanel.transform, "아티스트", new Vector2(0,    0), new Vector2(255, 50));
-        var togExpert  = MakeToggle("ExpertToggle", diffPanel.transform, "Expert", new Vector2(155,  0));
+        var bpmInput    = MakeInputField("BpmInput",    metaPanel.transform, "BPM",      new Vector2(280,  0), new Vector2(255, 50));
+
+        // 난이도 토글 (Easy 제거, ExpertPlus 추가)
+        var diffPanel     = MakePanel("DiffPanel", canvas.transform, new Vector2(0, -45), new Vector2(860, 60));
+        var togNormal     = MakeToggle("NormalToggle",     diffPanel.transform, "Normal",   new Vector2(-206, 0));
+        var togHard       = MakeToggle("HardToggle",       diffPanel.transform, "Hard",     new Vector2(-51,  0));
+        var togExpert     = MakeToggle("ExpertToggle",     diffPanel.transform, "Expert",   new Vector2(104,  0));
+        var togExpertPlus = MakeToggle("ExpertPlusToggle", diffPanel.transform, "Expert+",  new Vector2(259,  0));
+        togNormal.isOn     = true;
         togHard.isOn       = true;
         togExpert.isOn     = true;
+        togExpertPlus.isOn = true;
 
-        var actPanel  = MakePanel("ActionPanel", canvas.transform, new Vector2(0, -125), new Vector2(860, 80));
+        var backBtnSC = MakeButton("BackButton", canvas.transform, "< 뒤로", new Vector2(346, 365), new Vector2(130, 50));
-        var genBtn    = MakeButton("GenerateButton", actPanel.transform, "AI 생성 시작",  new Vector2(-175, 0), new Vector2(440, 65));
-        var manualBtn = MakeButton("ManualButton",   actPanel.transform, "직접 만들기 →", new Vector2(245,  0), new Vector2(185, 42));
 
-        var progGroup  = MakePanel("ProgressGroup",  canvas.transform, new Vector2(0, -250), new Vector2(860, 95));
+        var actPanel  = MakePanel("ActionPanel", canvas.transform, new Vector2(0, -145), new Vector2(860, 75));
-        var statusTxt  = MakeTMP("StatusText",    progGroup.transform, "", new Vector2(0, 28), new Vector2(840, 36), 18);
+        var genBtn    = MakeButton("GenerateButton", actPanel.transform, "AI 생성 시작",  new Vector2(-175, 0), new Vector2(440, 60));
-        var progSlider = MakeSlider("ProgressSlider", progGroup.transform, new Vector2(0, -15), new Vector2(820, 28));
+        var manualBtn = MakeButton("ManualButton",   actPanel.transform, "직접 만들기 >", new Vector2(245,  0), new Vector2(185, 40));
+
+        var progGroup  = MakePanel("ProgressGroup",  canvas.transform, new Vector2(0, -265), new Vector2(860, 90));
+        var statusTxt  = MakeTMP("StatusText",    progGroup.transform, "", new Vector2(0, 25), new Vector2(840, 34), 17);
+        var progSlider = MakeSlider("ProgressSlider", progGroup.transform, new Vector2(0, -15), new Vector2(820, 26));
         progGroup.SetActive(false);
 
         var sso = new SerializedObject(scMgr);
         Bind(sso, "audioDropdown",      audioDd);
         Bind(sso, "refreshBtn",         refreshBtn.GetComponent<Button>());
         Bind(sso, "inputPathHint",      pathHint);
+        Bind(sso, "filePickerBtn",      filePickBtn.GetComponent<Button>());
+        Bind(sso, "addStatusText",      addStatusTxt);
+        Bind(sso, "urlInput",           urlField);
+        Bind(sso, "urlDownloadBtn",     urlDlBtn.GetComponent<Button>());
         Bind(sso, "titleInput",         titleInput);
         Bind(sso, "artistInput",        artistInput);
         Bind(sso, "bpmInput",           bpmInput);
-        Bind(sso, "toggleEasy",         togEasy);
         Bind(sso, "toggleNormal",       togNormal);
         Bind(sso, "toggleHard",         togHard);
         Bind(sso, "toggleExpert",       togExpert);
+        Bind(sso, "toggleExpertPlus",   togExpertPlus);
+        Bind(sso, "backButton",         backBtnSC.GetComponent<Button>());
         Bind(sso, "generateButton",     genBtn.GetComponent<Button>());
         Bind(sso, "manualEditorButton", manualBtn.GetComponent<Button>());
         Bind(sso, "progressGroup",      progGroup);
@@ -438,7 +646,9 @@ public static class VRBeatSaberSceneBuilder
     {
         var go  = new GameObject(name);
         go.transform.SetParent(parent, false);
-        go.AddComponent<Image>().color = new Color(0.08f, 0.08f, 0.08f, 0.88f);
+        var img = go.AddComponent<Image>();
+        img.color  = new Color(0.08f, 0.08f, 0.08f, 0.88f);
+        img.sprite = null;
         var rt  = go.GetComponent<RectTransform>();
         rt.anchoredPosition = pos;
         rt.sizeDelta        = size;
@@ -449,7 +659,9 @@ public static class VRBeatSaberSceneBuilder
     {
         var go = new GameObject(name);
         go.transform.SetParent(parent, false);
-        go.AddComponent<Image>().color = new Color(0.22f, 0.22f, 0.22f);
+        var img = go.AddComponent<Image>();
+        img.color  = new Color(0.22f, 0.22f, 0.22f);
+        img.sprite = null;
         go.AddComponent<Button>();
         var rt = go.GetComponent<RectTransform>();
         rt.anchoredPosition = pos;
@@ -472,7 +684,7 @@ public static class VRBeatSaberSceneBuilder
         var tmp = go.AddComponent<TextMeshProUGUI>();
         tmp.text      = text;
         tmp.fontSize  = fs;
-        tmp.alignment = TextAlignmentOptions.MidlineLeft;
+        tmp.alignment = TextAlignmentOptions.Center;
         var rt  = go.GetComponent<RectTransform>();
         rt.anchoredPosition = pos;
         rt.sizeDelta        = size;
@@ -483,7 +695,9 @@ public static class VRBeatSaberSceneBuilder
     {
         var go    = new GameObject(name);
         go.transform.SetParent(parent, false);
-        go.AddComponent<Image>().color = new Color(0.15f, 0.15f, 0.15f);
+        var fImg = go.AddComponent<Image>();
+        fImg.color  = new Color(0.15f, 0.15f, 0.15f);
+        fImg.sprite = null;
         var field = go.AddComponent<TMP_InputField>();
         var rt    = go.GetComponent<RectTransform>();
         rt.anchoredPosition = pos;
@@ -517,7 +731,9 @@ public static class VRBeatSaberSceneBuilder
     {
         var go = new GameObject(name);
         go.transform.SetParent(parent, false);
-        go.AddComponent<Image>().color = new Color(0.15f, 0.15f, 0.15f);
+        var ddImg = go.AddComponent<Image>();
+        ddImg.color  = new Color(0.15f, 0.15f, 0.15f);
+        ddImg.sprite = null;
         var dd = go.AddComponent<TMP_Dropdown>();
         var rt = go.GetComponent<RectTransform>();
         rt.anchoredPosition = pos;

Assets/Script/BeatSageUploader.cs

@@ -20,21 +20,22 @@ public class BeatSageUploader : MonoBehaviour
     private const float POLL_TIMEOUT   = 300f;
 
     // Beat Sage 난이도 이름 매핑 (내부 → API)
+    // Beat Sage API가 인정하는 난이도: Normal, Hard, Expert, ExpertPlus (Easy 없음)
     private static readonly Dictionary<string, string> DiffNames = new()
     {
-        { "easy",   "Easy"   },
         { "normal", "Normal"     },
         { "hard",   "Hard"       },
         { "expert", "Expert"     },
+        { "expertplus", "ExpertPlus" },
     };
 
     // Beat Sage .zip 내 .dat 파일명 매핑 (내부 → zip 내 파일명)
     private static readonly Dictionary<string, string> DatFileNames = new()
     {
-        { "easy",   "Easy.dat"   },
         { "normal",     "Normal.dat"     },
         { "hard",       "Hard.dat"       },
         { "expert",     "Expert.dat"     },
+        { "expertplus", "ExpertPlus.dat" },
     };
 
     public string CurrentStatus { get; private set; } = "";
@@ -50,18 +51,20 @@ public class BeatSageUploader : MonoBehaviour
         Action<string> onError)
     {
         // 1단계: 레벨 생성 요청
-        SetStatus("Beat Sage에 음원 전송 중...");
+        SetStatus("[1/4] 음원 업로드 중...");
+        Debug.Log($"[BeatSage] 업로드 시작 — 파일: {audioPath}");
         string levelId = null;
 
         yield return CreateLevel(audioPath, difficulties,
             id => levelId = id,
             onError);
 
+        Debug.Log($"[BeatSage] CreateLevel 완료 — levelId: {levelId}");
         if (levelId == null) yield break;
         onProgress?.Invoke(0.15f);
 
         // 2단계: 생성 완료 폴링
-        SetStatus("Beat Sage AI 맵 생성 중...");
+        SetStatus("[2/4] AI 맵 생성 시작...");
         bool   ready   = false;
         float  elapsed = 0f;
 
@@ -74,8 +77,9 @@ public class BeatSageUploader : MonoBehaviour
             yield return PollHeartbeat(levelId,
                 status =>
                 {
-                    ready = status == "generated";
+                    ready = string.Equals(status, "generated", System.StringComparison.OrdinalIgnoreCase)
-                    error = status == "error";
+                         || string.Equals(status, "done",      System.StringComparison.OrdinalIgnoreCase);
+                    error = string.Equals(status, "error",     System.StringComparison.OrdinalIgnoreCase);
                 },
                 onError);
 
@@ -83,13 +87,13 @@ public class BeatSageUploader : MonoBehaviour
 
             float progress = Mathf.Clamp01(elapsed / POLL_TIMEOUT);
             onProgress?.Invoke(0.15f + progress * 0.6f);
-            SetStatus($"Beat Sage AI 맵 생성 중... ({(int)elapsed}s)");
+            SetStatus($"[2/4] AI 맵 생성 중... {(int)elapsed}초 경과");
         }
 
         if (!ready) { onError?.Invoke("Beat Sage 타임아웃 (5분 초과)"); yield break; }
 
         // 3단계: .zip 다운로드
-        SetStatus("결과 다운로드 중...");
+        SetStatus("[3/4] 결과 다운로드 중...");
         byte[] zipBytes = null;
 
         yield return DownloadZip(levelId,
@@ -100,7 +104,7 @@ public class BeatSageUploader : MonoBehaviour
         onProgress?.Invoke(0.9f);
 
         // 4단계: .zip 해제 + BeatSageConverter 변환
-        SetStatus("맵 데이터 변환 중...");
+        SetStatus("[3/4] 맵 데이터 변환 중...");
         Dictionary<string, List<NoteData>> maps = null;
 
         try
@@ -114,7 +118,7 @@ public class BeatSageUploader : MonoBehaviour
         }
 
         onProgress?.Invoke(1f);
-        SetStatus("변환 완료");
+        SetStatus("[3/4] 변환 완료");
         onComplete?.Invoke(maps);
     }
 
@@ -126,15 +130,25 @@ public class BeatSageUploader : MonoBehaviour
         byte[] audioBytes = File.ReadAllBytes(audioPath);
         string fileName   = Path.GetFileName(audioPath);
 
-        // 난이도 문자열 변환: ["easy","hard"] → "Easy,Hard"
+        // 난이도: 알 수 없는 값(easy 등)은 건너뜀, 쉼표 구분 단일 필드로 전송
-        var diffStr = string.Join(",", difficulties.ConvertAll(d =>
+        var mappedDiffs = new List<string>();
-            DiffNames.TryGetValue(d, out var n) ? n : d));
+        foreach (string d in difficulties)
+            if (DiffNames.TryGetValue(d, out var n)) mappedDiffs.Add(n);
+
+        if (mappedDiffs.Count == 0)
+        {
+            onError?.Invoke("Beat Sage가 지원하지 않는 난이도입니다. Normal/Hard/Expert/ExpertPlus 중 선택하세요.");
+            yield break;
+        }
+
+        string diffStr = string.Join(",", mappedDiffs);
+        Debug.Log($"[BeatSage] 전송 difficulties: '{diffStr}'");
 
         var form = new List<IMultipartFormSection>
         {
             new MultipartFormFileSection("audio_file", audioBytes, fileName, "audio/mpeg"),
-            new MultipartFormDataSection("audio_metadata_title",  ""),
+            new MultipartFormDataSection("audio_metadata_title",  " "),
-            new MultipartFormDataSection("audio_metadata_artist", ""),
+            new MultipartFormDataSection("audio_metadata_artist", " "),
             new MultipartFormDataSection("difficulties",          diffStr),
             new MultipartFormDataSection("modes",                 "Standard"),
             new MultipartFormDataSection("events",                "DotBlocks,Obstacles,Bombs"),
@@ -149,6 +163,8 @@ public class BeatSageUploader : MonoBehaviour
 
         if (req.result != UnityWebRequest.Result.Success)
         {
+            string body = req.downloadHandler?.text ?? "(응답 없음)";
+            Debug.LogError($"[BeatSage] HTTP {req.responseCode} — {req.error}\n응답 본문: {body}");
             onError?.Invoke($"레벨 생성 요청 실패: {req.error}");
             yield break;
         }

Assets/Script/DesktopUIMode.cs

@@ -0,0 +1,161 @@
+using UnityEngine;
+using UnityEngine.InputSystem;
+using UnityEngine.SceneManagement;
+using UnityEngine.UI;
+
+/// <summary>
+/// 에디터/PC 환경 전용 테스트 보조 스크립트.
+/// RuntimeInitializeOnLoadMethod로 자동 생성되므로 씬에 직접 추가할 필요 없습니다.
+/// Quest 빌드 시 자동으로 비활성화됩니다.
+///
+/// 기능:
+///   1. TrackedDeviceGraphicRaycaster → GraphicRaycaster 교체 (마우스 클릭 활성화)
+///   2. Canvas EventCamera 자동 갱신 (클릭 위치 정확도)
+///   3. ESC 키로 씬별 뒤로가기
+/// </summary>
+public class DesktopUIMode : MonoBehaviour
+{
+#if !UNITY_ANDROID || UNITY_EDITOR
+
+    // 어떤 씬에서 Play를 눌러도 자동 실행
+    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.AfterSceneLoad)]
+    private static void AutoCreate()
+    {
+        if (FindObjectOfType<DesktopUIMode>() != null) return; // 이미 있으면 생성 안 함
+
+        var go = new GameObject("[DesktopUIMode]");
+        go.AddComponent<DesktopUIMode>();
+    }
+
+    // ESC 뒤로가기 씬 매핑
+    private static readonly System.Collections.Generic.Dictionary<string, string> BackSceneMap =
+        new System.Collections.Generic.Dictionary<string, string>
+        {
+            { "SongSelect",     "Intro"       },
+            { "SongCreator",    "Intro"       },
+            { "MapEditorScene", "SongCreator" },
+            { "Game",           "SongSelect"  },
+        };
+
+    private void Awake()
+    {
+        // 중복 방지 (씬에 직접 놓은 경우 AutoCreate와 겹칠 수 있음)
+        if (FindObjectsOfType<DesktopUIMode>().Length > 1)
+        {
+            Destroy(gameObject);
+            return;
+        }
+
+        DontDestroyOnLoad(gameObject);
+        SceneManager.sceneLoaded += OnSceneLoaded;
+        PatchCanvases(); // 현재 씬 즉시 패치
+    }
+
+    private void OnDestroy()
+    {
+        SceneManager.sceneLoaded -= OnSceneLoaded;
+    }
+
+    private void OnSceneLoaded(Scene scene, LoadSceneMode mode)
+    {
+        StartCoroutine(PatchAfterFrame());
+    }
+
+    private System.Collections.IEnumerator PatchAfterFrame()
+    {
+        yield return null; // Canvas.Awake 이후 실행 보장
+        PatchCanvases();
+    }
+
+    private void Update()
+    {
+        RefreshCanvasCameras(); // 매 프레임 worldCamera 갱신 (카메라 초기화 타이밍 보정)
+
+        if (Keyboard.current?.escapeKey.wasPressedThisFrame == true)
+            GoBack();
+    }
+
+    // ── Canvas 패치 ──────────────────────────────────────────
+
+    private static void PatchCanvases()
+    {
+        foreach (var canvas in FindObjectsOfType<Canvas>())
+        {
+            if (canvas.renderMode != RenderMode.WorldSpace) continue;
+
+            // TrackedDeviceGraphicRaycaster → GraphicRaycaster
+            var tracked = canvas.GetComponent("TrackedDeviceGraphicRaycaster");
+            if (tracked != null)
+            {
+                DestroyImmediate(tracked);
+                if (canvas.GetComponent<GraphicRaycaster>() == null)
+                    canvas.gameObject.AddComponent<GraphicRaycaster>();
+
+                Debug.Log($"[DesktopUIMode] {canvas.name} Raycaster 교체 완료");
+            }
+        }
+
+        RemoveDuplicateAudioListeners();
+        RefreshCanvasCameras();
+    }
+
+    private static void RemoveDuplicateAudioListeners()
+    {
+        var listeners = FindObjectsOfType<AudioListener>();
+        if (listeners.Length <= 1) return;
+
+        // 첫 번째(DontDestroyOnLoad에 없는 것 우선)만 남기고 나머지 제거
+        AudioListener keep = null;
+        foreach (var al in listeners)
+        {
+            if (al.gameObject.scene.name != "DontDestroyOnLoad")
+            { keep = al; break; }
+        }
+        if (keep == null) keep = listeners[0];
+
+        foreach (var al in listeners)
+        {
+            if (al != keep)
+            {
+                Debug.Log($"[DesktopUIMode] 중복 AudioListener 제거: {al.gameObject.name}");
+                DestroyImmediate(al);
+            }
+        }
+    }
+
+    private static void RefreshCanvasCameras()
+    {
+        Camera cam = Camera.main;
+        if (cam == null)
+        {
+            // Camera.main이 없으면 씬에서 직접 찾기 (DontDestroyOnLoad 제외)
+            foreach (var c in FindObjectsOfType<Camera>())
+            {
+                if (c.enabled && c.gameObject.scene.name != "DontDestroyOnLoad")
+                {
+                    cam = c;
+                    break;
+                }
+            }
+        }
+        if (cam == null) cam = FindObjectOfType<Camera>(); // 최후 수단
+        if (cam == null) return;
+
+        foreach (var canvas in FindObjectsOfType<Canvas>())
+        {
+            if (canvas.renderMode == RenderMode.WorldSpace && canvas.worldCamera != cam)
+                canvas.worldCamera = cam;
+        }
+    }
+
+    // ── ESC 뒤로가기 ─────────────────────────────────────────
+
+    private static void GoBack()
+    {
+        string current = SceneManager.GetActiveScene().name;
+        if (BackSceneMap.TryGetValue(current, out string target))
+            SceneManager.LoadScene(target);
+    }
+
+#endif
+}

Assets/Script/DesktopUIMode.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 1c063d20f87d41d40a6a01c6bd1a1736

Assets/Script/DownloadManager.cs

@@ -6,7 +6,7 @@ using UnityEngine.Networking;
 
 public class DownloadManager : MonoBehaviour
 {
-    [SerializeField] private string baseUrl = "http://whdwo798.synology.me:8180/beatsaber";
+    [SerializeField] private string baseUrl = "http://whdwo798.synology.me/beatsaber";
 
     private static string CacheRoot => Path.Combine(Application.temporaryCachePath, "beatsaber");
 
@@ -64,8 +64,10 @@ public class DownloadManager : MonoBehaviour
     public string MapPath(SongInfo song, string difficulty)
     {
         DifficultyInfo info = song.difficulties.Get(difficulty);
-        if (info == null) return null;
+        if (info == null || string.IsNullOrEmpty(info.mapFile)) return null;
-        return Path.Combine(SongDir(song.id), Path.GetFileName(info.mapFile));
+        string fileName = Path.GetFileName(info.mapFile);
+        if (string.IsNullOrEmpty(fileName)) return null;
+        return Path.Combine(SongDir(song.id), fileName);
     }
 
     // ── 내부 구현 ─────────────────────────────────────────────
@@ -73,10 +75,11 @@ public class DownloadManager : MonoBehaviour
     private IEnumerator DownloadSongCoroutine(SongInfo song, string difficulty,
         Action<float> onProgress, Action onComplete, Action<string> onError)
     {
-        Directory.CreateDirectory(SongDir(song.id));
+        string songDir = Path.GetFullPath(SongDir(song.id));
+        Directory.CreateDirectory(songDir);
 
         // 1단계: 오디오 (70%)
-        string audioPath = AudioPath(song.id);
+        string audioPath = Path.Combine(songDir, $"{song.id}.mp3");
         if (!File.Exists(audioPath))
         {
             bool failed = false;
@@ -95,7 +98,19 @@ public class DownloadManager : MonoBehaviour
             yield break;
         }
 
+        if (string.IsNullOrEmpty(diffInfo.mapFile))
+        {
+            onError?.Invoke($"'{difficulty}' 맵 파일 정보 없음 — Creator에서 곡을 다시 생성해주세요");
+            yield break;
+        }
+
         string mapPath = MapPath(song, difficulty);
+        if (mapPath != null) mapPath = Path.GetFullPath(mapPath);
+        if (mapPath == null)
+        {
+            onError?.Invoke($"'{difficulty}' 맵 경로 계산 실패");
+            yield break;
+        }
         if (!File.Exists(mapPath))
         {
             bool failed = false;

Assets/Script/GameBackButton.cs

@@ -0,0 +1,18 @@
+using UnityEngine;
+using UnityEngine.SceneManagement;
+using UnityEngine.UI;
+
+/// <summary>
+/// Game 씬의 뒤로가기 버튼에 자동으로 추가됩니다.
+/// SceneBuilder가 Button에 이 컴포넌트를 달아 씬 이동을 처리합니다.
+/// </summary>
+[RequireComponent(typeof(Button))]
+public class GameBackButton : MonoBehaviour
+{
+    [SerializeField] private string targetScene = "SongSelect";
+
+    private void Start()
+    {
+        GetComponent<Button>().onClick.AddListener(() => SceneManager.LoadScene(targetScene));
+    }
+}

Assets/Script/GameBackButton.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 72739d64e582ca840a355a30eba85d75

Assets/Script/NasPublisher.cs

@@ -10,15 +10,36 @@ using UnityEngine.Networking;
 public class NasPublisher : MonoBehaviour
 {
     [Header("NAS 접속 정보")]
-    [SerializeField] private string nasBaseUrl  = "http://192.168.55.3:5000"; // DSM 포트 (내부망)
+    [SerializeField] private string nasBaseUrl  = "http://192.168.55.3:5000";
     [SerializeField] private string nasAccount  = "admin";
-    [SerializeField] private string nasPassword = ""; // Inspector에서 입력
+    [SerializeField] private string nasRootPath = "/web/beatsaber";
-    [SerializeField] private string nasRootPath = "/web/beatsaber";          // NAS 내 절대경로
 
     [Header("정적 서버 URL (songs.json 읽기용)")]
-    [SerializeField] private string staticBaseUrl = "http://whdwo798.synology.me:8180/beatsaber";
+    [SerializeField] private string staticBaseUrl = "http://whdwo798.synology.me/beatsaber";
 
-    private string _sid = ""; // DSM 세션 ID
+    private string _sid        = "";
+    private string _synoToken  = ""; // DSM 7 CSRF 토큰 (enable_syno_token=yes 로 획득)
+    private string _password   = ""; // StreamingAssets/nas_config.json 에서 로드
+
+    private void Awake()
+    {
+        LoadConfig();
+    }
+
+    private void LoadConfig()
+    {
+        string path = Path.Combine(Application.streamingAssetsPath, "nas_config.json");
+        if (!File.Exists(path))
+        {
+            Debug.LogWarning("[NasPublisher] nas_config.json 없음: " + path);
+            return;
+        }
+        var cfg = JsonUtility.FromJson<NasConfig>(File.ReadAllText(path));
+        _password = cfg?.password ?? "";
+    }
+
+    [Serializable]
+    private class NasConfig { public string password; }
 
     // ── Public API ───────────────────────────────────────────
 
@@ -30,17 +51,17 @@ public class NasPublisher : MonoBehaviour
         Action onComplete,
         Action<string> onError)
     {
+        bool failed = false;
+        void OnErr(string e) { onError?.Invoke(e); failed = true; }
+
         // 1단계: DSM 로그인
-        yield return Login(onError);
+        yield return Login(OnErr);
         if (string.IsNullOrEmpty(_sid)) yield break;
         onProgress?.Invoke(0.1f);
 
         // 2단계: 오디오 업로드
-        yield return UploadFile(
+        yield return UploadFile(audioPath, $"{nasRootPath}/music", $"{song.id}.mp3", OnErr);
-            audioPath,
+        if (failed) { yield return Logout(); yield break; }
-            $"{nasRootPath}/music",
-            $"{song.id}.mp3",
-            onError);
         onProgress?.Invoke(0.4f);
 
         // 3단계: 각 난이도 맵 JSON 업로드
@@ -53,20 +74,18 @@ public class NasPublisher : MonoBehaviour
             string json     = BeatSageConverter.ToMapJson(kv.Value);
             byte[] bytes    = Encoding.UTF8.GetBytes(json);
 
-            // 파일명에 맞춰 DifficultyInfo 업데이트
             AssignMapFile(song, kv.Key, fileName);
 
-            yield return UploadBytes(
+            yield return UploadBytes(bytes, fileName, $"{nasRootPath}/maps", OnErr);
-                bytes, fileName,
+            if (failed) { yield return Logout(); yield break; }
-                $"{nasRootPath}/maps",
-                onError);
 
             done++;
             onProgress?.Invoke(0.4f + (float)done / total * 0.3f);
         }
 
         // 4단계: songs.json 다운로드 → 항목 추가 → 재업로드
-        yield return PatchSongsJson(song, onError);
+        yield return PatchSongsJson(song, OnErr);
+        if (failed) { yield return Logout(); yield break; }
         onProgress?.Invoke(0.95f);
 
         // 5단계: 로그아웃
@@ -81,11 +100,12 @@ public class NasPublisher : MonoBehaviour
 
     private IEnumerator Login(Action<string> onError)
     {
+        Debug.Log($"[NasPublisher] 로그인 시도 — nasBaseUrl: '{nasBaseUrl}'");
         string url = $"{nasBaseUrl}/webapi/auth.cgi" +
-                     $"?api=SYNO.API.Auth&version=3&method=login" +
+                     $"?api=SYNO.API.Auth&version=6&method=login" +
                      $"&account={UnityWebRequest.EscapeURL(nasAccount)}" +
-                     $"&passwd={UnityWebRequest.EscapeURL(nasPassword)}" +
+                     $"&passwd={UnityWebRequest.EscapeURL(_password)}" +
-                     $"&session=FileStation&format=sid";
+                     $"&session=FileStation&format=sid&enable_syno_token=yes";
 
         using var req = UnityWebRequest.Get(url);
         yield return req.SendWebRequest();
@@ -96,7 +116,11 @@ public class NasPublisher : MonoBehaviour
             yield break;
         }
 
-        _sid = ParseSid(req.downloadHandler.text);
+        Debug.Log($"[NasPublisher] 로그인 응답: {req.downloadHandler.text}");
+        string resp = req.downloadHandler.text;
+        _sid       = ParseJsonString(resp, "sid");
+        _synoToken = ParseJsonString(resp, "synotoken");
+        Debug.Log($"[NasPublisher] sid={_sid}, synotoken={_synoToken}");
         if (string.IsNullOrEmpty(_sid))
             onError?.Invoke("DSM sid 파싱 실패 — 계정 정보를 확인하세요");
     }
@@ -122,26 +146,61 @@ public class NasPublisher : MonoBehaviour
     private IEnumerator UploadBytes(byte[] bytes, string fileName,
         string nasFolder, Action<string> onError)
     {
-        string url = $"{nasBaseUrl}/webapi/entry.cgi";
+        Debug.Log($"[NasPublisher] 업로드 시도 — path: '{nasFolder}', file: '{fileName}'");
 
-        var form = new List<IMultipartFormSection>
+        string uploadUrl = $"{nasBaseUrl}/webapi/entry.cgi" +
+                           $"?api=SYNO.FileStation.Upload&version=2&method=upload" +
+                           $"&_sid={UnityWebRequest.EscapeURL(_sid)}";
+
+        // PowerShell 테스트와 동일한 방식으로 multipart body 수동 구성
+        string boundary = System.Guid.NewGuid().ToString("N");
+        const string CRLF = "\r\n";
+
+        using var bodyStream = new MemoryStream();
+
+        void WriteText(string text)
         {
-            new MultipartFormDataSection("api",       "SYNO.FileStation.Upload"),
+            var b = Encoding.UTF8.GetBytes(text);
-            new MultipartFormDataSection("version",   "2"),
+            bodyStream.Write(b, 0, b.Length);
-            new MultipartFormDataSection("method",    "upload"),
+        }
-            new MultipartFormDataSection("path",      nasFolder),
+        void WriteField(string name, string value)
-            new MultipartFormDataSection("overwrite", "true"),
+        {
-            new MultipartFormDataSection("_sid",      _sid),
+            WriteText($"--{boundary}{CRLF}");
-            new MultipartFormFileSection("file", bytes, fileName, "application/octet-stream"),
+            WriteText($"Content-Disposition: form-data; name=\"{name}\"{CRLF}{CRLF}");
-        };
+            WriteText(value);
+            WriteText(CRLF);
+        }
+
+        WriteField("path", nasFolder);
+        WriteField("create_parents", "true");
+        WriteField("overwrite", "true");
+        WriteText($"--{boundary}{CRLF}");
+        WriteText($"Content-Disposition: form-data; name=\"file\"; filename=\"{fileName}\"{CRLF}");
+        WriteText($"Content-Type: application/octet-stream{CRLF}{CRLF}");
+        bodyStream.Write(bytes, 0, bytes.Length);
+        WriteText(CRLF);
+        WriteText($"--{boundary}--{CRLF}");
+
+        byte[] bodyBytes = bodyStream.ToArray();
+
+        using var req = new UnityWebRequest(uploadUrl, "POST");
+        req.uploadHandler   = new UploadHandlerRaw(bodyBytes);
+        req.downloadHandler = new DownloadHandlerBuffer();
+        req.SetRequestHeader("Content-Type", $"multipart/form-data; boundary={boundary}");
+        if (!string.IsNullOrEmpty(_synoToken))
+            req.SetRequestHeader("X-SYNO-TOKEN", _synoToken);
 
-        using var req = UnityWebRequest.Post(url, form);
         yield return req.SendWebRequest();
 
         if (req.result != UnityWebRequest.Result.Success)
+        {
             onError?.Invoke($"업로드 실패({fileName}): {req.error}");
-        else
+            yield break;
-            Debug.Log($"[NasPublisher] 업로드 완료: {fileName}");
+        }
+
+        Debug.Log($"[NasPublisher] 업로드 응답({fileName}): {req.downloadHandler.text}");
+        if (req.downloadHandler.text.Contains("\"success\":false"))
+            onError?.Invoke($"업로드 거부({fileName}): {req.downloadHandler.text}");
     }
 
     // ── songs.json 패치 ───────────────────────────────────────
@@ -178,12 +237,12 @@ public class NasPublisher : MonoBehaviour
 
     // ── 유틸 ─────────────────────────────────────────────────
 
-    private static string ParseSid(string json)
+    private static string ParseJsonString(string json, string key)
     {
-        const string key = "\"sid\":\"";
+        string search = $"\"{key}\":\"";
-        int start = json.IndexOf(key, StringComparison.Ordinal);
+        int start = json.IndexOf(search, StringComparison.Ordinal);
         if (start < 0) return null;
-        start += key.Length;
+        start += search.Length;
         int end = json.IndexOf('"', start);
         return end > start ? json.Substring(start, end - start) : null;
     }

Assets/Script/NoteData.cs

@@ -43,17 +43,17 @@ public class SongInfo
 [Serializable]
 public class DifficultyMap
 {
-    public DifficultyInfo easy;
     public DifficultyInfo normal;
     public DifficultyInfo hard;
     public DifficultyInfo expert;
+    public DifficultyInfo expertplus;
 
     public DifficultyInfo Get(string key) => key switch
     {
-        "easy"   => easy,
         "normal"     => normal,
         "hard"       => hard,
         "expert"     => expert,
+        "expertplus" => expertplus,
         _            => null
     };
 }

Assets/Script/PersistentXRRig.cs

@@ -0,0 +1,41 @@
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+/// <summary>
+/// Intro 씬의 XR Origin (Hands)에 추가하세요.
+/// DontDestroyOnLoad로 모든 씬에 XR Rig를 유지하고,
+/// 씬 전환 시 중복 카메라를 자동으로 비활성화합니다.
+/// </summary>
+[DisallowMultipleComponent]
+public class PersistentXRRig : MonoBehaviour
+{
+    private void Awake()
+    {
+        // 이미 다른 PersistentXRRig가 살아있으면 자기 자신을 제거 (싱글턴)
+        var existing = FindObjectsByType<PersistentXRRig>(FindObjectsSortMode.None);
+        if (existing.Length > 1)
+        {
+            Destroy(gameObject);
+            return;
+        }
+
+        DontDestroyOnLoad(gameObject);
+        SceneManager.sceneLoaded += OnSceneLoaded;
+    }
+
+    private void OnDestroy()
+    {
+        SceneManager.sceneLoaded -= OnSceneLoaded;
+    }
+
+    private void OnSceneLoaded(Scene scene, LoadSceneMode mode)
+    {
+        // SceneBuilder가 만든 일반 카메라(Main Camera)를 비활성화
+        // - XR Rig 자식 카메라는 유지
+        foreach (var cam in FindObjectsByType<Camera>(FindObjectsSortMode.None))
+        {
+            if (!cam.transform.IsChildOf(transform))
+                cam.gameObject.SetActive(false);
+        }
+    }
+}

Assets/Script/PersistentXRRig.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 0d94d5e288e7ee34facc8caf424e5c72

Assets/Script/SongCreatorManager.cs

@@ -2,8 +2,10 @@ using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
+using System.Threading;
 using TMPro;
 using UnityEngine;
+using UnityEngine.Networking;
 using UnityEngine.SceneManagement;
 using UnityEngine.UI;
 
@@ -12,7 +14,15 @@ public class SongCreatorManager : MonoBehaviour
     [Header("음원 선택")]
     [SerializeField] private TMP_Dropdown audioDropdown;
     [SerializeField] private Button       refreshBtn;
-    [SerializeField] private TMP_Text     inputPathHint; // 파일 넣는 경로 안내
+    [SerializeField] private TMP_Text     inputPathHint;
+
+    [Header("음원 추가 — 로컬 파일")]
+    [SerializeField] private Button       filePickerBtn;   // 파일 탐색 버튼
+    [SerializeField] private TMP_Text     addStatusText;   // 추가/다운로드 상태
+
+    [Header("음원 추가 — URL")]
+    [SerializeField] private TMP_InputField urlInput;          // MP3 직접 URL
+    [SerializeField] private Button         urlDownloadBtn;    // URL 다운로드 시작
 
     [Header("메타데이터")]
     [SerializeField] private TMP_InputField titleInput;
@@ -20,14 +30,16 @@ public class SongCreatorManager : MonoBehaviour
     [SerializeField] private TMP_InputField bpmInput;
 
     [Header("난이도")]
-    [SerializeField] private Toggle toggleEasy;
     [SerializeField] private Toggle toggleNormal;
     [SerializeField] private Toggle toggleHard;
     [SerializeField] private Toggle toggleExpert;
+    [SerializeField] private Toggle toggleExpertPlus;
 
     [Header("액션")]
     [SerializeField] private Button generateButton;
     [SerializeField] private Button manualEditorButton; // 작은 버튼
+    [SerializeField] private Button backButton;
+    [SerializeField] private string introSceneName = "Intro";
 
     [Header("진행 상태")]
     [SerializeField] private GameObject progressGroup;
@@ -46,6 +58,7 @@ public class SongCreatorManager : MonoBehaviour
         Path.Combine(Application.persistentDataPath, "input");
 
     private readonly List<string> audioFiles = new();
+    private string _pendingFilePath; // 파일 다이얼로그 결과 (백그라운드 스레드 → 메인 스레드 전달)
 
     // ── Unity ────────────────────────────────────────────────
 
@@ -56,14 +69,40 @@ public class SongCreatorManager : MonoBehaviour
         if (inputPathHint != null)
             inputPathHint.text = $"음원 경로: {InputPath}";
 
+        // 씬에서 아무 토글도 안 선택되어 있으면 전부 켜기
+        bool anyOn = (toggleNormal     != null && toggleNormal.isOn)
+                  || (toggleHard       != null && toggleHard.isOn)
+                  || (toggleExpert     != null && toggleExpert.isOn)
+                  || (toggleExpertPlus != null && toggleExpertPlus.isOn);
+        if (!anyOn)
+        {
+            if (toggleNormal     != null) toggleNormal.isOn     = true;
+            if (toggleHard       != null) toggleHard.isOn       = true;
+            if (toggleExpert     != null) toggleExpert.isOn     = true;
+            if (toggleExpertPlus != null) toggleExpertPlus.isOn = true;
+        }
+
         refreshBtn.onClick.AddListener(RefreshAudioList);
         generateButton.onClick.AddListener(OnGenerateClicked);
         manualEditorButton.onClick.AddListener(() => SceneManager.LoadScene(mapEditorScene));
+        backButton?.onClick.AddListener(() => SceneManager.LoadScene(introSceneName));
+        if (filePickerBtn != null) filePickerBtn.onClick.AddListener(OnFilePickerClicked);
+        if (urlDownloadBtn != null) urlDownloadBtn.onClick.AddListener(OnUrlDownloadClicked);
 
         progressGroup.SetActive(false);
         RefreshAudioList();
     }
 
+    private void Update()
+    {
+        // 파일 다이얼로그는 STA 스레드에서 실행되므로 결과를 메인 스레드에서 처리
+        if (_pendingFilePath != null)
+        {
+            CopyToInput(_pendingFilePath);
+            _pendingFilePath = null;
+        }
+    }
+
     // ── 음원 목록 갱신 ───────────────────────────────────────
 
     private void RefreshAudioList()
@@ -96,14 +135,18 @@ public class SongCreatorManager : MonoBehaviour
                                               { SetStatus("BPM을 올바르게 입력해주세요."); return; }
 
         var diffs = new List<string>();
-        if (toggleEasy.isOn)   diffs.Add("easy");
+        if (toggleNormal     != null && toggleNormal.isOn)     diffs.Add("normal");
-        if (toggleNormal.isOn) diffs.Add("normal");
+        if (toggleHard       != null && toggleHard.isOn)       diffs.Add("hard");
-        if (toggleHard.isOn)   diffs.Add("hard");
+        if (toggleExpert     != null && toggleExpert.isOn)     diffs.Add("expert");
-        if (toggleExpert.isOn) diffs.Add("expert");
+        if (toggleExpertPlus != null && toggleExpertPlus.isOn) diffs.Add("expertplus");
 
         if (diffs.Count == 0) { SetStatus("난이도를 하나 이상 선택해주세요."); return; }
 
-        StartCoroutine(GenerateFlow(audioFiles[audioDropdown.value], bpm, diffs));
+        string audioPath = audioFiles[audioDropdown.value];
+        Debug.Log($"[SongCreator] 생성 시작 — 파일: {audioPath}, BPM: {bpm}, 난이도: {string.Join(",", diffs)}");
+        Debug.Log($"[SongCreator] beatSageUploader={beatSageUploader}, nasPublisher={nasPublisher}");
+
+        StartCoroutine(GenerateFlow(audioPath, bpm, diffs));
     }
 
     // ── 생성 플로우 ───────────────────────────────────────────
@@ -112,40 +155,58 @@ public class SongCreatorManager : MonoBehaviour
     {
         SetInteractable(false);
         progressGroup.SetActive(true);
+        Debug.Log("[SongCreator] GenerateFlow 시작");
 
         // 1단계: Beat Sage 전송 → 변환
         Dictionary<string, List<NoteData>> maps = null;
         bool failed = false;
 
+        Debug.Log("[SongCreator] BeatSage Upload 호출");
         yield return beatSageUploader.Upload(
             audioPath, diffs, bpm,
             onProgress: p =>
             {
                 progressSlider.value = p * 0.8f;
-                SetStatus(beatSageUploader.CurrentStatus);
+                SetStatus($"{beatSageUploader.CurrentStatus}  ({(int)(p * 80)}%)");
             },
-            onComplete: result => maps = result,
+            onComplete: result =>
-            onError: err => { SetStatus($"Beat Sage 실패: {err}"); failed = true; });
+            {
+                maps = result;
+                Debug.Log($"[SongCreator] BeatSage 완료 — 난이도 수: {result?.Count}");
+            },
+            onError: err =>
+            {
+                Debug.LogError($"[SongCreator] BeatSage 오류: {err}");
+                SetStatus($"오류: {err}");
+                failed = true;
+            });
 
+        Debug.Log($"[SongCreator] BeatSage 단계 끝 — failed={failed}, maps={maps?.Count}");
         if (failed) { SetInteractable(true); yield break; }
 
         // 2단계: NAS 업로드
-        SetStatus("NAS에 업로드 중...");
         SongInfo song = BuildSongInfo(audioPath, bpm, maps);
 
+        Debug.Log($"[SongCreator] NAS Publish 호출 — song.id={song.id}");
         yield return nasPublisher.Publish(
             song, audioPath, maps,
             onProgress: p =>
             {
                 progressSlider.value = 0.8f + p * 0.2f;
-                SetStatus($"NAS 업로드 중... {(int)((0.8f + p * 0.2f) * 100)}%");
+                SetStatus($"[4/4] NAS 업로드 중...  ({(int)((0.8f + p * 0.2f) * 100)}%)");
             },
             onComplete: () =>
             {
                 progressSlider.value = 1f;
-                SetStatus($"'{song.title}' 생성 완료!");
+                SetStatus($"완료! '{song.title}' 생성 성공 (100%)");
+                Debug.Log($"[SongCreator] NAS 업로드 완료");
             },
-            onError: err => { SetStatus($"NAS 업로드 실패: {err}"); failed = true; });
+            onError: err =>
+            {
+                Debug.LogError($"[SongCreator] NAS 오류: {err}");
+                SetStatus($"NAS 업로드 실패: {err}");
+                failed = true;
+            });
 
         SetInteractable(true);
     }
@@ -163,10 +224,10 @@ public class SongCreatorManager : MonoBehaviour
             var info = new DifficultyInfo { noteCount = kv.Value.Count };
             switch (kv.Key)
             {
-                case "easy":   diffMap.easy   = info; break;
                 case "normal":     diffMap.normal     = info; break;
                 case "hard":       diffMap.hard       = info; break;
                 case "expert":     diffMap.expert     = info; break;
+                case "expertplus": diffMap.expertplus = info; break;
             }
         }
 
@@ -193,5 +254,102 @@ public class SongCreatorManager : MonoBehaviour
         manualEditorButton.interactable = value;
         audioDropdown.interactable      = value;
         refreshBtn.interactable         = value;
+        if (filePickerBtn  != null) filePickerBtn.interactable  = value;
+        if (urlDownloadBtn != null) urlDownloadBtn.interactable = value;
+    }
+
+    // ── 로컬 파일 선택 ────────────────────────────────────────
+
+    private void OnFilePickerClicked()
+    {
+#if UNITY_EDITOR
+        string path = UnityEditor.EditorUtility.OpenFilePanel("음원 파일 선택", "", "mp3");
+        if (!string.IsNullOrEmpty(path)) CopyToInput(path);
+#elif UNITY_STANDALONE_WIN
+        var t = new Thread(() =>
+        {
+            var dlg = new System.Windows.Forms.OpenFileDialog
+            {
+                Filter = "MP3 파일|*.mp3",
+                Title  = "음원 파일 선택"
+            };
+            if (dlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
+                _pendingFilePath = dlg.FileName;
+        });
+        t.SetApartmentState(ApartmentState.STA);
+        t.Start();
+#else
+        SetAddStatus($"ADB로 파일을 추가하세요:\n{InputPath}");
+#endif
+    }
+
+    private void CopyToInput(string srcPath)
+    {
+        try
+        {
+            string dest = Path.Combine(InputPath, Path.GetFileName(srcPath));
+            File.Copy(srcPath, dest, overwrite: true);
+            RefreshAudioList();
+            string nameNoExt = Path.GetFileNameWithoutExtension(srcPath);
+            int idx = audioFiles.FindIndex(f => Path.GetFileNameWithoutExtension(f) == nameNoExt);
+            if (idx >= 0) audioDropdown.value = idx;
+            SetAddStatus($"추가됨: {Path.GetFileName(srcPath)}");
+        }
+        catch (Exception e)
+        {
+            SetAddStatus($"파일 추가 실패: {e.Message}");
+        }
+    }
+
+    // ── URL 다운로드 ──────────────────────────────────────────
+
+    private void OnUrlDownloadClicked()
+    {
+        string url = urlInput != null ? urlInput.text.Trim() : "";
+        if (string.IsNullOrEmpty(url)) { SetAddStatus("URL을 입력해주세요."); return; }
+        StartCoroutine(DownloadFromUrl(url));
+    }
+
+    private IEnumerator DownloadFromUrl(string url)
+    {
+        SetAddStatus("다운로드 중...");
+        if (urlDownloadBtn != null) urlDownloadBtn.interactable = false;
+
+        string fileName;
+        try
+        {
+            string uriPath = new Uri(url).AbsolutePath;
+            fileName = Path.GetFileName(uriPath);
+            if (string.IsNullOrEmpty(fileName) || !fileName.EndsWith(".mp3", StringComparison.OrdinalIgnoreCase))
+                fileName = "download.mp3";
+        }
+        catch { fileName = "download.mp3"; }
+
+        string savePath = Path.GetFullPath(Path.Combine(InputPath, fileName));
+
+        using var req = UnityWebRequest.Get(url);
+        req.downloadHandler = new DownloadHandlerFile(savePath);
+        yield return req.SendWebRequest();
+
+        if (urlDownloadBtn != null) urlDownloadBtn.interactable = true;
+
+        if (req.result == UnityWebRequest.Result.Success)
+        {
+            RefreshAudioList();
+            string nameNoExt = Path.GetFileNameWithoutExtension(fileName);
+            int idx = audioFiles.FindIndex(f => Path.GetFileNameWithoutExtension(f) == nameNoExt);
+            if (idx >= 0) audioDropdown.value = idx;
+            SetAddStatus($"다운로드 완료: {fileName}");
+        }
+        else
+        {
+            if (File.Exists(savePath)) File.Delete(savePath);
+            SetAddStatus($"다운로드 실패: {req.error}");
+        }
+    }
+
+    private void SetAddStatus(string msg)
+    {
+        if (addStatusText != null) addStatusText.text = msg;
     }
 }

Assets/Script/SongDetailPanel.cs

@@ -13,15 +13,16 @@ public class SongDetailPanel : MonoBehaviour
     [SerializeField] private TMP_Text infoText;
 
     [Header("난이도 버튼")]
-    [SerializeField] private Button btnEasy;
     [SerializeField] private Button btnNormal;
     [SerializeField] private Button btnHard;
     [SerializeField] private Button btnExpert;
+    [SerializeField] private Button btnExpertPlus;
 
     [Header("액션 버튼")]
     [SerializeField] private Button downloadButton;
     [SerializeField] private Button deleteButton;
     [SerializeField] private Button playButton;
+    [SerializeField] private Button closeButton;
 
     [Header("진행률")]
     [SerializeField] private GameObject progressGroup;
@@ -41,10 +42,10 @@ public class SongDetailPanel : MonoBehaviour
 
     private readonly (string key, System.Func<SongDetailPanel, Button> btn)[] diffSlots =
     {
-        ("easy",   p => p.btnEasy),
         ("normal",     p => p.btnNormal),
         ("hard",       p => p.btnHard),
         ("expert",     p => p.btnExpert),
+        ("expertplus", p => p.btnExpertPlus),
     };
 
     // ── Public API ───────────────────────────────────────────
@@ -101,6 +102,9 @@ public class SongDetailPanel : MonoBehaviour
 
         playButton.onClick.RemoveAllListeners();
         playButton.onClick.AddListener(OnPlayClicked);
+
+        closeButton?.onClick.RemoveAllListeners();
+        closeButton?.onClick.AddListener(() => gameObject.SetActive(false));
     }
 
     private void SelectDifficulty(string difficulty)

Assets/Script/Spawner.cs

@@ -2,6 +2,7 @@ using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using UnityEngine;
+using UnityEngine.InputSystem;
 using UnityEngine.Networking;
 using UnityEngine.SceneManagement;
 
@@ -21,6 +22,10 @@ public class Spawner : MonoBehaviour
     [Header("씬 설정")]
     public string songSelectSceneName = "SongSelect";
 
+    [Header("뒤로가기 입력")]
+    [Tooltip("Quest B/Y 버튼을 뒤로가기로 쓸 InputAction (선택)")]
+    [SerializeField] private InputActionReference backAction;
+
     private List<NoteData> mapNotes      = new List<NoteData>();
     private int            nextNoteIndex = 0;
     private float          travelTime;
@@ -28,6 +33,16 @@ public class Spawner : MonoBehaviour
 
     // ── Unity ────────────────────────────────────────────────
 
+    void Awake()
+    {
+        // PlayOnAwake가 OnEnable에서 발동하기 전에 차단
+        if (audioSource != null)
+        {
+            audioSource.playOnAwake = false;
+            audioSource.clip        = null;
+        }
+    }
+
     void Start()
     {
         travelTime = distanceToHit / noteSpeed;
@@ -44,6 +59,10 @@ public class Spawner : MonoBehaviour
 
     void Update()
     {
+        // 뒤로가기: Quest B/Y 버튼 (PC ESC는 DesktopUIMode가 처리)
+        bool goBack = backAction != null && backAction.action.WasPressedThisFrame();
+        if (goBack) { SceneManager.LoadScene(songSelectSceneName); return; }
+
         if (!isReady || audioSource == null || !audioSource.isPlaying) return;
 
         float currentTime = audioSource.time;
@@ -62,25 +81,66 @@ public class Spawner : MonoBehaviour
         SongInfo song       = GameSession.SelectedSong;
         string   difficulty = GameSession.SelectedDifficulty;
 
-        // 맵 JSON 로드
+        // ── 기본 연결 확인 ───────────────────────────────────────
+        if (audioSource == null)
+        {
+            Debug.LogError("[Spawner] AudioSource 미연결 — Inspector에서 AudioSource 연결 필요");
+            yield break;
+        }
+        if (song == null)
+        {
+            Debug.LogError("[Spawner] GameSession.SelectedSong == null — SongSelect에서 곡을 선택하고 Play를 눌러야 합니다");
+            yield break;
+        }
+        if (string.IsNullOrEmpty(difficulty))
+        {
+            Debug.LogError("[Spawner] GameSession.SelectedDifficulty 비어있음");
+            yield break;
+        }
+
+        Debug.Log($"[Spawner] 시작: song={song.title}({song.id}), diff={difficulty}");
+
+        // ── 맵 JSON 로드 ─────────────────────────────────────────
         string mapPath = GetMapPath(song, difficulty);
+        Debug.Log($"[Spawner] 맵 경로: {mapPath}");
+
+        if (string.IsNullOrEmpty(mapPath))
+        {
+            Debug.LogError($"[Spawner] songs.json에 '{difficulty}' mapFile 없음 — NAS 재업로드 필요");
+            yield break;
+        }
         if (!File.Exists(mapPath))
         {
-            Debug.LogError($"[Spawner] 맵 파일 없음: {mapPath}");
+            Debug.LogError($"[Spawner] 맵 파일 없음: {mapPath}\n→ SongSelect에서 다운로드하세요");
             yield break;
         }
         LoadMapJson(mapPath);
 
-        // 오디오 로드 (로컬 파일 → AudioClip)
+        // ── 오디오 로드 ──────────────────────────────────────────
+        audioSource.Stop();
+        audioSource.clip = null;
+
         string audioPath = GetAudioPath(song.id);
+        Debug.Log($"[Spawner] 오디오 경로: {audioPath}");
+
+        if (!File.Exists(audioPath))
+        {
+            Debug.LogError($"[Spawner] 오디오 파일 없음: {audioPath}\n→ SongSelect에서 다운로드하세요");
+            yield break;
+        }
+
         yield return LoadAudioClip(audioPath);
 
-        // LRU 갱신
+        if (audioSource.clip == null)
-        SongLibrary.Instance?.TouchSong(song.id);
+        {
+            Debug.LogError("[Spawner] 오디오 클립 로드 실패 (파일 손상 또는 형식 오류)");
+            yield break;
+        }
 
+        SongLibrary.Instance?.TouchSong(song.id);
         isReady = true;
         audioSource.Play();
-        Debug.Log($"[Spawner] 시작: {song.title} ({difficulty})");
+        Debug.Log($"[Spawner] 재생 시작: {song.title} / {difficulty} / 노트:{mapNotes.Count}개");
     }
 
     private void LoadMapJson(string path)

Assets/Script/XRSimulatorLoader.cs

@@ -0,0 +1,37 @@
+using UnityEngine;
+
+/// <summary>
+/// Quest가 아닌 환경(에디터, PC)에서 XR Interaction Simulator를 자동으로 로드합니다.
+///
+/// 설정 방법:
+/// 1. Intro 씬의 XR Origin (또는 임의 GameObject)에 이 스크립트를 추가
+/// 2. SimulatorPrefab 필드에 아래 경로의 프리팹을 연결:
+///    Assets/Samples/XR Interaction Toolkit/3.3.1/XR Interaction Simulator/XR Interaction Simulator.prefab
+///
+/// 조작법 (XR Interaction Simulator):
+/// - 마우스 우클릭 드래그 : 머리 방향 회전
+/// - G 키 누른 채 마우스 이동 : 오른손 컨트롤러 이동
+/// - Shift+G : 왼손 컨트롤러
+/// - Space : 트리거(UI 클릭)
+/// </summary>
+public class XRSimulatorLoader : MonoBehaviour
+{
+    [SerializeField] private GameObject simulatorPrefab;
+
+    private void Awake()
+    {
+#if !UNITY_ANDROID || UNITY_EDITOR
+        if (simulatorPrefab != null)
+        {
+            Instantiate(simulatorPrefab);
+            Debug.Log("[XRSimulatorLoader] XR Interaction Simulator 시작");
+        }
+        else
+        {
+            Debug.LogWarning("[XRSimulatorLoader] simulatorPrefab이 비어 있습니다.\n" +
+                "Inspector에서 XR Interaction Simulator.prefab을 연결하세요.\n" +
+                "경로: Assets/Samples/XR Interaction Toolkit/3.3.1/XR Interaction Simulator/XR Interaction Simulator.prefab");
+        }
+#endif
+    }
+}

Assets/Script/XRSimulatorLoader.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 7e76ce582f56913438ba761e845a91e0