feat(net): D.2b-B B-Wire — WorldSession dispatch for 0x02CD/SetStackSize/InventoryRemoveObject

Add 3 new events (PlayerIntPropertyUpdated, StackSizeUpdated, InventoryObjectRemoved)
and their payload record types near the existing ObjectIntPropertyUpdated event.
Add 3 switch cases in the GameMessage dispatcher immediately after the
PublicUpdatePropertyInt (0x02CE) branch for:
  - PrivateUpdatePropertyInt (0x02CD) — no-guid player-own property
  - SetStackSize (0x0197) — stack count + value update
  - InventoryRemoveObject (0x0024) — remove from inventory view

No test seam on the switch; verified by build + parser tests (Tasks 3/4/5)
+ live run per codebase convention (see ObjectTableWiringTests comment).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/AcDream.Core.Net/WorldSession.cs

@@ -195,6 +195,25 @@ public sealed class WorldSession : IDisposable
     /// </summary>
     public event Action<ObjectIntPropertyUpdate>? ObjectIntPropertyUpdated;
 
+    /// <summary>Payload for <see cref="PlayerIntPropertyUpdated"/>: a PropertyInt change on
+    /// the player's OWN object (from PrivateUpdatePropertyInt 0x02CD — no guid on the wire).</summary>
+    public readonly record struct PlayerIntPropertyUpdate(uint Property, int Value);
+
+    /// <summary>Fires when the session parses a PrivateUpdatePropertyInt (0x02CD) — one
+    /// PropertyInt updated on the player. B-Wire routes EncumbranceVal (5) to the burden bar.</summary>
+    public event Action<PlayerIntPropertyUpdate>? PlayerIntPropertyUpdated;
+
+    /// <summary>Payload for <see cref="StackSizeUpdated"/>: SetStackSize (0x0197) — a stack's
+    /// count + value after a merge / split.</summary>
+    public readonly record struct StackSizeUpdate(uint Guid, int StackSize, int Value);
+
+    /// <summary>Fires when the session parses a SetStackSize (0x0197) top-level GameMessage.</summary>
+    public event Action<StackSizeUpdate>? StackSizeUpdated;
+
+    /// <summary>Fires when the session parses an InventoryRemoveObject (0x0024) — the guid left
+    /// the player's inventory view.</summary>
+    public event Action<uint>? InventoryObjectRemoved;
+
     /// <summary>
     /// Fires when the server sends a PlayerTeleport (0xF751) game message,
     /// signalling that the player is entering portal space. The uint payload
@@ -958,6 +977,25 @@ public sealed class WorldSession : IDisposable
                     ObjectIntPropertyUpdated?.Invoke(
                         new ObjectIntPropertyUpdate(p.Value.Guid, p.Value.Property, p.Value.Value));
             }
+            else if (op == PrivateUpdatePropertyInt.Opcode)
+            {
+                var p = PrivateUpdatePropertyInt.TryParse(body);
+                if (p is not null)
+                    PlayerIntPropertyUpdated?.Invoke(
+                        new PlayerIntPropertyUpdate(p.Value.Property, p.Value.Value));
+            }
+            else if (op == SetStackSize.Opcode)
+            {
+                var p = SetStackSize.TryParse(body);
+                if (p is not null)
+                    StackSizeUpdated?.Invoke(
+                        new StackSizeUpdate(p.Value.Guid, p.Value.StackSize, p.Value.Value));
+            }
+            else if (op == InventoryRemoveObject.Opcode)
+            {
+                var p = InventoryRemoveObject.TryParse(body);
+                if (p is not null) InventoryObjectRemoved?.Invoke(p.Value.Guid);
+            }
             else if (op == GameEventEnvelope.Opcode)
             {
                 // Phase F.1: 0xF7B0 is the GameEvent envelope. Parse the