feat(ui): finish retail toolbar controls

Discover all seven panel launchers from their DAT panel-id attributes, route mounted panels through event-driven retained window state, and ghost unavailable panels. Port Use and Examine selection/target behavior with exact Appraise dispatch and retail cursor modes.

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

src/AcDream.App/UI/RetailPanelCatalog.cs

@@ -0,0 +1,48 @@
+namespace AcDream.App.UI;
+
+/// <summary>
+/// Retail toolbar panel ids carried by DAT property <c>0x10000029</c>.
+/// Retail reference: <c>gmToolbarUI::PostInit @ 0x004BEA80</c> discovers the
+/// seven buttons and reads this property from each one.
+/// Only panels mounted in the retained runtime are mapped; other authored
+/// toolbar buttons remain present but ghosted until their panel ships.
+/// </summary>
+public static class RetailPanelCatalog
+{
+    public const uint Inventory = 7u;
+    public const uint Character = 11u;
+
+    private static readonly (uint PanelId, string WindowName)[] Mounted =
+    {
+        (Inventory, WindowNames.Inventory),
+        (Character, WindowNames.Character),
+    };
+
+    public static IReadOnlyList<(uint PanelId, string WindowName)> MountedPanels => Mounted;
+
+    public static bool TryGetWindowName(uint panelId, out string windowName)
+    {
+        foreach (var entry in Mounted)
+        {
+            if (entry.PanelId != panelId) continue;
+            windowName = entry.WindowName;
+            return true;
+        }
+
+        windowName = string.Empty;
+        return false;
+    }
+
+    public static bool TryGetPanelId(string windowName, out uint panelId)
+    {
+        foreach (var entry in Mounted)
+        {
+            if (!string.Equals(entry.WindowName, windowName, StringComparison.Ordinal)) continue;
+            panelId = entry.PanelId;
+            return true;
+        }
+
+        panelId = 0;
+        return false;
+    }
+}