fix(client): restore retail interaction parity

Harden keyboard and camera routing, inventory and vendor interactions, chat/emotes, relog portal flow, and paperdoll rendering. Add retail research, connected gate coverage, and release-gate validation.

tests/AcDream.Core.Net.Tests/Messages/ServerMessageTests.cs

@@ -27,6 +27,22 @@ public sealed class ServerMessageTests
         Assert.Equal(5u, parsed.Value.ChatType);
     }
 
+    [Fact]
+    public void TryParse_PreservesEmbeddedCommandResponseNewlines()
+    {
+        const string text = "@acecommands\n@help\n@teleport";
+        byte[] msg = PackString16L(text);
+        byte[] body = new byte[4 + msg.Length + 4];
+        BinaryPrimitives.WriteUInt32LittleEndian(body, ServerMessage.Opcode);
+        Array.Copy(msg, 0, body, 4, msg.Length);
+        BinaryPrimitives.WriteUInt32LittleEndian(body.AsSpan(4 + msg.Length), 0u);
+
+        ServerMessage.Parsed parsed = Assert.IsType<ServerMessage.Parsed>(
+            ServerMessage.TryParse(body));
+
+        Assert.Equal(text, parsed.Message);
+    }
+
     [Fact]
     public void TryParse_WrongOpcode_ReturnsNull()
     {