fix(ui): restore retail skill training confirmation

Route untrained-skill promotion through DialogFactory with retail's exact prompt and stored skill/credit properties. Defer the character-sheet refresh until accept or reject completes while leaving trained-skill XP raises immediate.

Co-Authored-By: Codex <codex@openai.com>

src/AcDream.App/UI/Layout/CharacterStatController.cs

@@ -195,6 +195,14 @@ public static class CharacterStatController
         long Cost,
         int Amount);
 
+    /// <summary>
+    /// Handles a retail stat raise and invokes <paramref name="completed"/> when
+    /// the request has either been applied or cancelled. The completion seam is
+    /// required by asynchronous retail confirmation dialogs such as
+    /// <c>gmSkillUI::TrainSkill @ 0x0049C5F0</c>.
+    /// </summary>
+    public delegate void RaiseRequestHandler(RaiseRequest request, Action completed);
+
     private sealed class TabVisual
     {
         public required CharacterStatTab Tab { get; init; }
@@ -248,7 +256,7 @@ public static class CharacterStatController
         UiDatFont? datFont = null,
         UiDatFont? rowDatFont = null,
         Func<uint, (uint handle, int w, int h)>? spriteResolve = null,
-        Action<RaiseRequest>? onRaiseRequest = null,
+        RaiseRequestHandler? onRaiseRequest = null,
         Action? onClose = null)
     {
         // rowDatFont: larger font for attribute row name/value text (18px vs 16px default).
@@ -1129,7 +1137,7 @@ public static class CharacterStatController
         int[] attrSel,
         int[] skillSel,
         Func<IReadOnlyList<SkillRowBinding>> skillRows,
-        Action<RaiseRequest>? onRaiseRequest,
+        RaiseRequestHandler? onRaiseRequest,
         Action<uint?>? afterRaiseRequest)
     {
         foreach (var button in allRaise1)
@@ -1154,7 +1162,7 @@ public static class CharacterStatController
         int[] attrSel,
         int[] skillSel,
         Func<IReadOnlyList<SkillRowBinding>> skillRows,
-        Action<RaiseRequest>? onRaiseRequest,
+        RaiseRequestHandler? onRaiseRequest,
         Action<uint?>? afterRaiseRequest)
     {
         if (onRaiseRequest is null) return;
@@ -1180,8 +1188,7 @@ public static class CharacterStatController
 
         if (request is not { } value) return;
 
-        onRaiseRequest(value);
-        afterRaiseRequest?.Invoke(selectedSkillId);
+        onRaiseRequest(value, () => afterRaiseRequest?.Invoke(selectedSkillId));
     }
 
     private static RaiseRequest? TryBuildAttributeRaiseRequest(

src/AcDream.App/UI/Layout/RetailDialogData.cs

@@ -19,6 +19,8 @@ public static class RetailDialogProperty
     public const uint QueueKey = 0xC3u;
     public const uint Message = 0xC5u;
     public const uint UsageObjectId = 0x1000003Du;
+    public const uint TrainSkillId = 0x10000040u;
+    public const uint TrainSkillCredits = 0x10000041u;
 }
 
 /// <summary>

src/AcDream.App/UI/RetailSkillTrainingConfirmationController.cs

@@ -0,0 +1,70 @@
+using System.Globalization;
+using AcDream.App.UI.Layout;
+
+namespace AcDream.App.UI;
+
+/// <summary>
+/// Ports the untrained-skill confirmation owned by
+/// <c>gmSkillUI::TrainSkill @ 0x0049C5F0</c> and
+/// <c>gmSkillUI::TrainSkillDialogCallback @ 0x0049C210</c>.
+/// Already-trained skill XP raises deliberately bypass this controller, matching
+/// retail's separate <c>gmSkillUI::RaiseSelection @ 0x0049C8C0</c> path.
+/// </summary>
+public sealed class RetailSkillTrainingConfirmationController
+{
+    public const string MessageFormat =
+        "Are you sure you want to spend {0} credits to train {1}?";
+
+    private readonly RetailDialogFactory _dialogs;
+
+    public RetailSkillTrainingConfirmationController(RetailDialogFactory dialogs)
+        => _dialogs = dialogs ?? throw new ArgumentNullException(nameof(dialogs));
+
+    public uint Request(
+        CharacterStatController.RaiseRequest request,
+        CharacterSheet sheet,
+        Action<CharacterStatController.RaiseRequest> accepted,
+        Action completed)
+    {
+        ArgumentNullException.ThrowIfNull(sheet);
+        ArgumentNullException.ThrowIfNull(accepted);
+        ArgumentNullException.ThrowIfNull(completed);
+
+        if (request.Kind != CharacterStatController.RaiseTargetKind.TrainSkill)
+            throw new ArgumentException("Only TrainSkill requests require this confirmation.", nameof(request));
+        if (request.Cost <= 0 || request.Cost > uint.MaxValue)
+            throw new ArgumentOutOfRangeException(nameof(request), "Training cost must fit retail's uint32 field.");
+
+        CharacterSkill skill = sheet.Skills.FirstOrDefault(candidate => candidate.Id == request.StatId)
+            ?? throw new InvalidOperationException($"Skill {request.StatId} is absent from the character sheet.");
+
+        string message = string.Format(
+            CultureInfo.InvariantCulture,
+            MessageFormat,
+            request.Cost,
+            skill.Name);
+
+        RetailDialogData data = RetailDialogData.Confirmation(message)
+            .Set(RetailDialogProperty.TrainSkillId, request.StatId)
+            .Set(RetailDialogProperty.TrainSkillCredits, checked((uint)request.Cost));
+
+        return _dialogs.MakeDialog(data, result =>
+        {
+            if (result.GetBoolean(RetailDialogProperty.ConfirmationResult))
+            {
+                uint skillId = result.GetUInt32(RetailDialogProperty.TrainSkillId);
+                uint credits = result.GetUInt32(RetailDialogProperty.TrainSkillCredits);
+                if (skillId != 0u && credits != 0u)
+                {
+                    accepted(new CharacterStatController.RaiseRequest(
+                        CharacterStatController.RaiseTargetKind.TrainSkill,
+                        skillId,
+                        credits,
+                        Amount: 1));
+                }
+            }
+
+            completed();
+        });
+    }
+}

src/AcDream.App/UI/RetailUiRuntime.cs

@@ -142,6 +142,7 @@ public sealed class RetailUiRuntime : IDisposable
     private readonly RetailUiAutomationScriptRunner? _automation;
     private GameplayConfirmationController? _gameplayConfirmationController;
     private RetailItemConfirmationController? _itemConfirmationController;
+    private RetailSkillTrainingConfirmationController? _skillTrainingConfirmationController;
     private bool _disposed;
 
     private RetailUiRuntime(RetailUiRuntimeBindings bindings)
@@ -707,6 +708,8 @@ public sealed class RetailUiRuntime : IDisposable
         _itemConfirmationController = new RetailItemConfirmationController(
             DialogFactory,
             ItemInteraction);
+        _skillTrainingConfirmationController =
+            new RetailSkillTrainingConfirmationController(DialogFactory);
         Console.WriteLine(
             $"[UI] retail DialogFactory from LayoutDesc 0x{layoutId:X8}; confirmation root 0x15.");
     }
@@ -806,7 +809,7 @@ public sealed class RetailUiRuntime : IDisposable
             _bindings.Assets.DefaultFont,
             _bindings.Assets.ResolveFont(0x40000001u) ?? _bindings.Assets.DefaultFont,
             _bindings.Assets.ResolveSprite,
-            provider.HandleRaiseRequest,
+            (request, completed) => HandleCharacterRaise(provider, request, completed),
             () => CloseWindow(WindowNames.Character));
         RetailWindowFrame.Mount(Host.Root, layout.Root, _bindings.Assets.ResolveSprite,
             new RetailWindowFrame.Options
@@ -826,6 +829,30 @@ public sealed class RetailUiRuntime : IDisposable
         Console.WriteLine("[D.2b-C] retail character window from LayoutDesc importer (0x2100002E).");
     }
 
+    private void HandleCharacterRaise(
+        CharacterSheetProvider provider,
+        CharacterStatController.RaiseRequest request,
+        Action completed)
+    {
+        if (request.Kind != CharacterStatController.RaiseTargetKind.TrainSkill)
+        {
+            provider.HandleRaiseRequest(request);
+            completed();
+            return;
+        }
+
+        RetailSkillTrainingConfirmationController confirmations =
+            _skillTrainingConfirmationController
+            ?? throw new InvalidOperationException(
+                "The retail dialog factory must be mounted before the character panel.");
+
+        confirmations.Request(
+            request,
+            provider.BuildSheet(),
+            provider.HandleRaiseRequest,
+            completed);
+    }
+
     private void MountPlugins()
     {
         if (_bindings.Plugins is null) return;