feat(ui): port retail dialog factory lifecycle

Replace the single mutable confirmation service with retail's property-backed DialogFactory model: fresh DAT roots, context ids, queue groups, priority preemption, callback/close-notice ordering, and context cancellation. Route /die, server confirmation aborts, and guarded item use through focused semantic owners.

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

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

@@ -0,0 +1,113 @@
+namespace AcDream.App.UI.Layout;
+
+/// <summary>
+/// Property identifiers consumed by retail's <c>Dialog</c> and
+/// <c>DialogFactory</c> implementations.
+/// </summary>
+public static class RetailDialogProperty
+{
+    public const uint Priority = 0x8Du;
+    public const uint Type = 0x8Eu;
+    public const uint AcceptLabel = 0x90u;
+    public const uint RejectLabel = 0x91u;
+    public const uint ConfirmationResult = 0x92u;
+    /// <summary>
+    /// When true, <c>Dialog::SetData @ 0x00476BE0</c> sets UIElement boolean
+    /// attribute <c>0x40</c>. The Keystone-owned attribute name is unavailable.
+    /// </summary>
+    public const uint ElementAttribute40 = 0xACu;
+    public const uint QueueKey = 0xC3u;
+    public const uint Message = 0xC5u;
+    public const uint UsageObjectId = 0x1000003Du;
+}
+
+/// <summary>
+/// Retail dialog types selected by property <c>0x8E</c> in
+/// <c>DialogFactory::CreateDialog_ @ 0x00477AD0</c>.
+/// </summary>
+public enum RetailDialogType : uint
+{
+    Confirmation = 1,
+    Wait = 2,
+    Message = 3,
+    TextInput = 4,
+    ConfirmationTextInput = 5,
+    Menu = 6,
+    ConfirmationMenu = 7,
+}
+
+/// <summary>
+/// Modern typed carrier for retail's <c>PropertyCollection</c> dialog contract.
+/// The raw numeric keys remain visible because type-specific presenters and semantic
+/// callbacks both extend the same collection in retail.
+/// </summary>
+public sealed class RetailDialogData
+{
+    private readonly Dictionary<uint, object> _values = new();
+
+    public IReadOnlyDictionary<uint, object> Values => _values;
+
+    public RetailDialogData Set<T>(uint propertyId, T value) where T : notnull
+    {
+        _values[propertyId] = value;
+        return this;
+    }
+
+    public bool Contains(uint propertyId) => _values.ContainsKey(propertyId);
+
+    public bool TryGet<T>(uint propertyId, out T value)
+    {
+        if (_values.TryGetValue(propertyId, out object? raw) && raw is T typed)
+        {
+            value = typed;
+            return true;
+        }
+
+        value = default!;
+        return false;
+    }
+
+    public bool GetBoolean(uint propertyId, bool defaultValue = false)
+        => _values.TryGetValue(propertyId, out object? raw)
+            ? raw switch
+            {
+                bool value => value,
+                byte value => value != 0,
+                int value => value != 0,
+                uint value => value != 0,
+                _ => defaultValue,
+            }
+            : defaultValue;
+
+    public uint GetUInt32(uint propertyId, uint defaultValue = 0u)
+        => _values.TryGetValue(propertyId, out object? raw)
+            ? raw switch
+            {
+                byte value => value,
+                ushort value => value,
+                int value when value >= 0 => (uint)value,
+                uint value => value,
+                Enum value => Convert.ToUInt32(value),
+                _ => defaultValue,
+            }
+            : defaultValue;
+
+    public string? GetString(uint propertyId)
+        => _values.TryGetValue(propertyId, out object? raw) ? raw as string : null;
+
+    public RetailDialogData Clone()
+    {
+        var clone = new RetailDialogData();
+        foreach ((uint propertyId, object value) in _values)
+            clone._values.Add(propertyId, value);
+        return clone;
+    }
+
+    public static RetailDialogData Confirmation(string message)
+    {
+        ArgumentNullException.ThrowIfNull(message);
+        return new RetailDialogData()
+            .Set(RetailDialogProperty.Type, RetailDialogType.Confirmation)
+            .Set(RetailDialogProperty.Message, message);
+    }
+}