Initial commit: Ananta CBT 4229938 private server with all fixes

Ananta.Server/Ananta.Handlers/Game/GameRouter.Compatibility4229938.cs

@@ -0,0 +1,62 @@
+using Ananta.SDK.Rpc;
+using Ananta.Server.Protocol.Client4229938;
+
+namespace Ananta.Server.Handlers.Game;
+
+/// <summary>
+/// Build-4229938 RPC-surface compatibility.  Semantic handlers still win.  Any other Invoke uses
+/// the exact generated return reader shape from the matching client Lua so callbacks receive a
+/// valid default value (empty list/dict, zero primitive, empty string, or non-null empty object)
+/// instead of a zero-byte body.
+/// </summary>
+internal sealed partial class GameRouter
+{
+    private Task DefaultUnknownInvoke4229938(RpcContext ctx)
+    {
+        if (DefaultReturnCatalog4229938.TryGet(ctx.MethodId, out var body, out var shape))
+        {
+            ctx.Session.Log.Warn($"[RPC4229938] unimplemented {Ananta.SDK.Logging.RpcMethodNames.Display(ctx.MethodId)} -> typed-default {shape} {body.Length}b");
+            return ctx.ReturnAsync(body);
+        }
+
+        ctx.Session.Log.Warn($"[RPC4229938] no generated return reader for {Ananta.SDK.Logging.RpcMethodNames.Display(ctx.MethodId)} -> empty OK");
+        return ctx.ReturnEmptyOkAsync();
+    }
+
+    private Task DefaultUnknownNotify4229938(RpcContext ctx)
+    {
+        // Notifies have no callback body. Accepting an unimplemented generated 4229938 notify is
+        // safer than treating it as a protocol error; stateful methods get semantic handlers as
+        // they are implemented, while telemetry/client-local signals remain harmless no-ops.
+        ctx.Session.Log.Warn($"[RPC4229938] unimplemented notify {Ananta.SDK.Logging.RpcMethodNames.Display(ctx.MethodId)} -> accepted");
+        return Task.CompletedTask;
+    }
+
+    // High-frequency/UI RPCs seen in stock 4229938 are made explicit so they no longer appear as
+    // unknown traffic.  The server does not emulate production economy/social services here; it
+    // returns the exact neutral value expected by the generated client callback.
+    [Handler(MethodId.AskTradeGetMarketList, HandlerPacketKind.Invoke)]
+    [Handler(MethodId.AskTradeGetHistoryPage, HandlerPacketKind.Invoke)]
+    [Handler(MethodId.AskPlayerRankingSummary, HandlerPacketKind.Invoke)]
+    [Handler(MethodId.AskPopularityPhoneFirstOpened, HandlerPacketKind.Invoke)]
+    [Handler(MethodId.AskPopularityUIOpened, HandlerPacketKind.Invoke)]
+    [Handler(MethodId.SyncOpenInspireHub, HandlerPacketKind.Invoke)]
+    [Handler(MethodId.AskQueryInspireHubAllGamePlayRecommendData, HandlerPacketKind.Invoke)]
+    [Handler(MethodId.AskQueryInspireHubAllGamePlayRankData, HandlerPacketKind.Invoke)]
+    [Handler(MethodId.AskLinkInfos, HandlerPacketKind.Invoke)]
+    [Handler(MethodId.GetLastMode, HandlerPacketKind.Invoke)]
+    [Handler(MethodId.AskSwitchLinkMode, HandlerPacketKind.Invoke)]
+    private Task KnownNeutralInvoke4229938(Connection conn, UxRpcMessage msg)
+    {
+        if (DefaultReturnCatalog4229938.TryGet(msg.MethodId, out var body, out var shape))
+        {
+            conn.Log.Info($"[RPC4229938] neutral {Ananta.SDK.Logging.RpcMethodNames.Display(msg.MethodId)} -> {shape} {body.Length}b");
+            return msg.Context.ReturnAsync(body);
+        }
+        return conn.ReturnEmptyOkAsync(msg);
+    }
+
+    [Handler(MethodId.OnParkourStateChange, HandlerPacketKind.Invoke)]
+    private Task OnParkourStateChange4229938(Connection conn, UxRpcMessage msg)
+        => conn.ReturnEmptyOkAsync(msg);
+}