feat: add Raydium CLMM protocol support, bump version to 0.2.1

src/instruction/pumpswap.rs

@@ -1,6 +1,7 @@
 use anyhow::{anyhow, Result};
 use solana_sdk::{instruction::Instruction, pubkey::Pubkey, signer::Signer};
 use spl_associated_token_account::instruction::create_associated_token_account_idempotent;
+use spl_token::instruction::close_account;
 
 use crate::{
     constants::pumpswap::{accounts, BUY_DISCRIMINATOR, SELL_DISCRIMINATOR},
@@ -361,6 +362,24 @@ impl PumpSwapInstructionBuilder {
             data,
         });
 
+        let protocol_params = params
+            .protocol_params
+            .as_any()
+            .downcast_ref::<PumpSwapParams>()
+            .ok_or_else(|| anyhow!("Invalid protocol params for PumpSwap"))?;
+
+        if protocol_params.auto_handle_wsol {
+            instructions.push(
+                close_account(
+                    &accounts::TOKEN_PROGRAM,
+                    &user_quote_token_account,
+                    &params.payer.pubkey(),
+                    &params.payer.pubkey(),
+                    &[&params.payer.pubkey()],
+                )
+                .unwrap(),
+            );
+        }
         Ok(instructions)
     }
 }