refactor: optimize AccountMeta creation with lazy static constants

- Consolidate protocol constants to unified module
- Pre-build AccountMeta objects using once_cell::Lazy
- Reduce instruction building overhead across all DEX protocols
- Improve code maintainability and performance

src/constants/mod.rs

@@ -1,4 +1,26 @@
+use solana_sdk::{pubkey, pubkey::Pubkey};
+
 pub mod decimals;
 pub mod swqos;
 pub mod trade;
 pub mod trade_platform;
+
+pub const SYSTEM_PROGRAM: Pubkey = solana_sdk::system_program::ID;
+pub const SYSTEM_PROGRAM_META: once_cell::sync::Lazy<solana_sdk::instruction::AccountMeta> =
+    once_cell::sync::Lazy::new(|| {
+        solana_sdk::instruction::AccountMeta::new_readonly(SYSTEM_PROGRAM, false)
+    });
+
+pub const TOKEN_PROGRAM: Pubkey = spl_token::ID;
+pub const TOKEN_PROGRAM_META: once_cell::sync::Lazy<solana_sdk::instruction::AccountMeta> =
+    once_cell::sync::Lazy::new(|| {
+        solana_sdk::instruction::AccountMeta::new_readonly(TOKEN_PROGRAM, false)
+    });
+
+pub const TOKEN_PROGRAM_2022: Pubkey = spl_token_2022::ID;
+
+pub const WSOL_TOKEN_ACCOUNT: Pubkey = pubkey!("So11111111111111111111111111111111111111112");
+pub const WSOL_TOKEN_ACCOUNT_META: once_cell::sync::Lazy<solana_sdk::instruction::AccountMeta> =
+    once_cell::sync::Lazy::new(|| {
+        solana_sdk::instruction::AccountMeta::new_readonly(WSOL_TOKEN_ACCOUNT, false)
+    });