Update emulation to use Traces API and improve fee checks

Switched transaction emulation from Wallet to Traces API in code and docs. Standardized BOC variable naming. Changed fee access to use GetTotalFees(). Added test assertions to verify emulation success and fee presence.

Author: apashintsev

README.md

@@ -313,8 +313,8 @@ var messageHash = WalletV5R1Utils.NormalizeHash(externalMsg).ToHex();
 var boc = Convert.ToBase64String(Builder.BeginCell().StoreMessage(externalMsg).EndCell().ToBoc());
 
 // Emulate before sending (optional)
-var consequences = await client.Wallet.EmulateAsync(boc);
-Console.WriteLine($"Estimated fee: {consequences.Event.Fee.Total}");
+var consequences = await Client.Traces.EmulateAsync(bocAsString);
+Console.WriteLine($"Estimated fee: {consequences.GetTotalFees()}");
 
 // Send transaction
 await client.Blockchain.SendBocAsync(boc: boc);

README_RU.md

@@ -313,8 +313,8 @@ var messageHash = WalletV5R1Utils.NormalizeHash(externalMsg).ToHex();
 var boc = Convert.ToBase64String(Builder.BeginCell().StoreMessage(externalMsg).EndCell().ToBoc());
 
 // Emulate before sending (optional)
-var consequences = await client.Wallet.EmulateAsync(boc);
-Console.WriteLine($"Estimated fee: {consequences.Event.Fee.Total}");
+var consequences = await Client.Traces.EmulateAsync(bocAsString);
+Console.WriteLine($"Estimated fee: {consequences.GetTotalFees()}");
 
 // Send transaction
 await client.Blockchain.SendBocAsync(boc: boc);

src/TonapiClient.Tests/TracesCategoryTests.cs

@@ -393,6 +393,10 @@ public async Task TransferTests()
           .EndCell();
         byte[] boc = messageCell.ToBoc();
         var bocAsString = Convert.ToBase64String(boc);
+        var consequences = await Client.Traces.EmulateAsync(bocAsString);
+        Assert.True(!consequences.HasUnsuccessfulTransactions(), "Emulated transaction should be successful");
+        Assert.True(consequences.GetTotalFees() > 0, "Emulated transaction should have fees");
+
         // await Client.LiteServer.SendMessageAsync(Convert.ToBase64String(boc));
         await Client.Blockchain.SendBocAsync(bocAsString);
         try