fix: 6 critical bugs blocking campaign flow

C1: CampaignManager._pendingChapterIndex consumed in OnSceneLoaded (Start only runs once for DontDestroyOnLoad)
C2: PieceIdentityManager.AssignIdentities() called after BoardManager.SetupBoard
C3: CampaignState.Reset() populates _alivePieces from _allIdentities
C4: GameManager no longer calls GameStateManager.TransitionTo — CampaignManager handles state exclusively
C5: PromotionUI uses only callback, removes duplicate PromotePawnTo call
C6: DialogueSystem.StartDialogue fires OnDialogueComplete on failure (returns bool now)
W1: OnChapterDefeat calls AutoSaveProgress to persist defeat state
W2: PauseMenuController uses SceneTransitionManager for fade effect

Assets/Game/Scripts/Data/CampaignState.cs

@@ -156,13 +156,20 @@ public class CampaignState : ScriptableObject
     public void Reset()
     {
         _completedChapters.Clear();
-        _alivePieces.Clear();
         _totalPiecesLost = 0;
         _currentChapterPiecesLost = 0;
         _lastChapterWasVictory = false;
         _lastCompletedChapterId = null;
         
-        Debug.Log("[CampaignState] Estado reseteado.");
+        // Initialize all pieces as alive for new campaign
+        _alivePieces.Clear();
+        foreach (var identity in _allIdentities)
+        {
+            if (identity != null && !string.IsNullOrEmpty(identity.characterName))
+                _alivePieces.Add(identity.characterName.ToLower());
+        }
+        
+        Debug.Log($"[CampaignState] Estado reseteado. {_alivePieces.Count} piezas inicializadas como vivas.");
     }
     
     // ==================== COMPATIBILIDAD CON SISTEMAS EXISTENTES ====================

Assets/Game/Scripts/Mono/Core/CampaignManager.cs

@@ -72,16 +72,7 @@ public class CampaignManager : MonoBehaviour
     
     void Start()
     {
-        // Retry subscription (handles race condition with GameManager.Awake)
         SubscribeToGameManager();
-        
-        // If we have a pending chapter, load it now (scene just loaded)
-        if (_pendingChapterIndex >= 0)
-        {
-            int idx = _pendingChapterIndex;
-            _pendingChapterIndex = -1;
-            InitializeChapter(idx);
-        }
     }
     
     // ══════════════════════════════════════════════════════
@@ -112,9 +103,15 @@ public class CampaignManager : MonoBehaviour
     
     private void OnSceneLoaded(Scene scene, LoadSceneMode mode)
     {
-        // Re-subscribe when a new scene loads (new GameManager created)
         _subscribedToGameManager = false;
         SubscribeToGameManager();
+        
+        if (_pendingChapterIndex >= 0)
+        {
+            int idx = _pendingChapterIndex;
+            _pendingChapterIndex = -1;
+            InitializeChapter(idx);
+        }
     }
     
     // ══════════════════════════════════════════════════════
@@ -240,6 +237,11 @@ public class CampaignManager : MonoBehaviour
         if (BoardManager.Instance != null && _campaignState != null)
         {
             BoardManager.Instance.SetupBoard(_campaignState);
+            
+            // Assign narrative identities to pieces
+            var pim = FindObjectOfType<PieceIdentityManager>();
+            if (pim != null)
+                pim.AssignIdentities();
         }
         
         // AI config
@@ -345,6 +347,7 @@ public class CampaignManager : MonoBehaviour
         if (_campaignState != null && CurrentChapter != null)
             _campaignState.CompleteChapter(CurrentChapter.id, wasVictory: false);
         
+        AutoSaveProgress();
         TransitionToDeadKings();
     }
     

Assets/Game/Scripts/Mono/Core/DialogueSystem.cs

@@ -97,7 +97,7 @@ public class DialogueSystem : MonoBehaviour
     /// Inicia un diálogo por ID.
     /// </summary>
     /// <param name="dialogueId">ID del diálogo a iniciar</param>
-    public void StartDialogue(string dialogueId)
+    public bool StartDialogue(string dialogueId)
     {
         if (_isActive)
         {
@@ -108,7 +108,8 @@ public class DialogueSystem : MonoBehaviour
         if (!_dialogues.ContainsKey(dialogueId))
         {
             Debug.LogError($"[DialogueSystem] Diálogo no encontrado: {dialogueId}");
-            return;
+            OnDialogueComplete?.Invoke();
+            return false;
         }
         
         _currentDialogue = _dialogues[dialogueId];
@@ -116,7 +117,8 @@ public class DialogueSystem : MonoBehaviour
         if (_currentDialogue.nodes == null || _currentDialogue.nodes.Count == 0)
         {
             Debug.LogError($"[DialogueSystem] Diálogo {dialogueId} no tiene nodos.");
-            return;
+            OnDialogueComplete?.Invoke();
+            return false;
         }
         
         _isActive = true;
@@ -124,6 +126,7 @@ public class DialogueSystem : MonoBehaviour
         
         // Mostrar primer nodo
         DisplayNode(_currentDialogue.nodes[0]);
+        return true;
     }
     
     /// <summary>

Assets/Game/Scripts/Mono/GameManager.cs

@@ -537,9 +537,7 @@ private void OnPromotionSelected(PieceType pieceType)
         if (AudioManager.Instance != null)
             AudioManager.Instance.PlayCheckmate();
         
-        // GameStateManager: transition to GameOver
-        if (GameStateManager.Instance != null)
-            GameStateManager.Instance.TransitionTo(GameState.GameOver);
+        // GameState transition handled by CampaignManager via OnCheckmate event
     }
     
     private void OnGameDraw(string reason)
@@ -547,8 +545,6 @@ private void OnPromotionSelected(PieceType pieceType)
         Debug.LogWarning($"¡Tablas! Razón: {reason}");
         OnDraw?.Invoke(reason);
         
-        // GameStateManager: transition to GameOver (draw = defeat in campaign)
-        if (GameStateManager.Instance != null)
-            GameStateManager.Instance.TransitionTo(GameState.GameOver);
+        // GameState transition handled by CampaignManager via OnDraw event
     }
 }

Assets/Game/Scripts/Mono/UI/PauseMenuController.cs

@@ -184,8 +184,11 @@ namespace AjedrezPurgatorio.UI
             if (GameStateManager.Instance != null)
                 GameStateManager.Instance.TransitionTo(GameState.Menu);
 
-            // Load main menu scene
-            SceneManager.LoadScene(_mainMenuSceneName);
+            // Load main menu scene with fade transition
+            if (SceneTransitionManager.Instance != null)
+                SceneTransitionManager.Instance.LoadScene(_mainMenuSceneName);
+            else
+                SceneManager.LoadScene(_mainMenuSceneName);
         }
 
         #endregion

Assets/Game/Scripts/Mono/UI/PromotionUI.cs

@@ -69,10 +69,7 @@ public class PromotionUI : MonoBehaviour
         // Reanudar el juego
         Time.timeScale = 1f;
         
-        // Ejecutar promoción
-        GameManager.Instance.PromotePawnTo(_pawnToPromote, pieceType);
-        
-        // Callback opcional
+        // Callback — CampaignManager/GameManager handles promotion via callback
         _onPromotionSelected?.Invoke(pieceType);
         
         _pawnToPromote = null;