fix(pumpswap): harden quotes and low-latency examples

Cargo.toml

@@ -75,6 +75,9 @@ futures = "0.3.31"
 futures-util = "0.3.31"
 base64 = "0.22.1"
 bs58 = "0.5.1"
+# `five8` 1.0 permits five8_core 0.1.x, whose DecodeError implements
+# std::error::Error only with this feature. Solana keypair decoding requires it.
+five8_core = { version = "0.1.2", features = ["std"] }
 rand = "0.9.0"
 bincode = "1.3.3"
 anyhow = "1.0.90"
@@ -123,12 +126,6 @@ memmap2 = "0.9"
 num_cpus = "1.16"
 libc = "0.2"
 
-# solana-keypair 3.1.2 assumes five8's DecodeError implements std::error::Error.
-# Mixed Solana dependency graphs can resolve five8 1.0 against five8_core 0.1,
-# so use the patched upstream source that wraps decode failures safely.
-[patch.crates-io]
-solana-keypair = { path = "patches/solana-keypair" }
-
 # 🚀 编译器优化配置 - 平衡性能与编译速度
 [profile.release]
 opt-level = 3              # 最高优化级别（不影响编译速度）