feat: Pump.fun mayhem_mode, Solana 3.1.12, TradeConfig builder alignment

- PumpFunParams::from_trade/from_dev_trade: add mayhem_mode Option; infer Mayhem
  via is_mayhem_fee_recipient when None (fixes fee recipient / NotAuthorized 6000
  when AMM protocol fee pubkey is used).
- Add is_mayhem_fee_recipient and is_amm_fee_recipient helpers in pumpfun utils.
- Bump solana-* crates to 3.1.12; align tonic/prost; use solana-message for
  AddressLookupTableAccount; add solana-system-interface 3.0.
- Update examples and latency script for new PumpFunParams signature.
- SWQoS and transaction builder adjustments for dependency changes.

Made-with: Cursor

src/trading/core/executor.rs

@@ -1,9 +1,10 @@
 use anyhow::Result;
 use solana_hash::Hash;
 use solana_sdk::{
-    instruction::Instruction, message::AddressLookupTableAccount, pubkey::Pubkey,
+    instruction::Instruction, pubkey::Pubkey,
     signature::Keypair, signature::Signature,
 };
+use solana_message::AddressLookupTableAccount;
 use std::{
     sync::Arc,
     time::{Duration, Instant},