feat: add flexible nonce parameter support

- Add nonce_account and current_nonce to trade parameters
- Remove hardcoded NonceCache dependency from nonce_manager
- Update examples and documentation for new nonce usage
- Fix nonce documentation errors and improve clarity

examples/nonce_cache/src/main.rs

@@ -119,13 +119,15 @@ async fn pumpfun_copy_trade_with_grpc(trade_info: PumpFunTradeEvent) -> AnyResul
     let client = create_solana_trade_client().await?;
     let mint_pubkey = trade_info.mint;
     let slippage_basis_points = Some(100);
+    let recent_blockhash = client.rpc.get_latest_blockhash().await?;
 
     // Setup nonce cache
     let nonce_account_str = "use_your_nonce_account_here";
     NonceCache::get_instance().init(Some(nonce_account_str.to_string()));
     NonceCache::get_instance().fetch_nonce_info_use_rpc(&client.rpc).await?;
-    let last_nonce = NonceCache::get_instance().get_nonce_info().current_nonce;
-    println!("Last nonce: {}", last_nonce);
+    let current_nonce = NonceCache::get_instance().get_nonce_info().current_nonce;
+    let nonce_account = NonceCache::get_instance().get_nonce_info().nonce_account;
+    println!("current_nonce: {}", current_nonce);
 
     // Buy tokens
     println!("Buying tokens from PumpFun...");
@@ -135,7 +137,7 @@ async fn pumpfun_copy_trade_with_grpc(trade_info: PumpFunTradeEvent) -> AnyResul
         mint: mint_pubkey,
         sol_amount: buy_sol_amount,
         slippage_basis_points: slippage_basis_points,
-        recent_blockhash: last_nonce,
+        recent_blockhash: recent_blockhash,
         extension_params: Box::new(PumpFunParams::from_trade(&trade_info, None)),
         lookup_table_key: None,
         wait_transaction_confirmed: true,
@@ -143,6 +145,8 @@ async fn pumpfun_copy_trade_with_grpc(trade_info: PumpFunTradeEvent) -> AnyResul
         close_wsol_ata: false,
         create_mint_ata: true,
         open_seed_optimize: false,
+        nonce_account: nonce_account,
+        current_nonce: Some(current_nonce),
     };
     client.buy(buy_params).await?;