fix: wait for tx confirmation on solana keypair send tx (#95)

* Wait for confirmation

* Add changesets

* Fix lint

typescript/.changeset/grumpy-donkeys-prove.md

@@ -0,0 +1,6 @@
+---
+"goat-examples-vercel-ai-solana": patch
+"@goat-sdk/wallet-solana": patch
+---
+
+Wait for transaction confirmation

typescript/examples/vercel-ai/solana/index.ts

@@ -27,7 +27,7 @@ const keypair = Keypair.fromSecretKey(base58.decode(process.env.SOLANA_PRIVATE_K
     const result = await generateText({
         model: openai("gpt-4o-mini"),
         tools: tools,
-        maxSteps: 5,
+        maxSteps: 10,
         prompt: "Swap 0.05 USDC to GOAT, return the transaction hash, make sure you check i have enough USDC to cover the swap",
     });
 

typescript/packages/wallets/solana/src/SolanaKeypairWalletClient.ts

@@ -41,7 +41,20 @@ export class SolanaKeypairWalletClient extends SolanaWalletClient {
 
         const hash = await this.connection.sendTransaction(transaction, {
             maxRetries: 5,
+            preflightCommitment: "confirmed",
         });
+
+        const newLatestBlockhash = await this.connection.getLatestBlockhash();
+
+        await this.connection.confirmTransaction(
+            {
+                blockhash: newLatestBlockhash.blockhash,
+                lastValidBlockHeight: newLatestBlockhash.lastValidBlockHeight,
+                signature: hash,
+            },
+            "confirmed",
+        );
+
         return {
             hash,
         };