v1.2.2

Security Fixes

• Fix stack buffer overflow in SOCKS5 RFC 1929 authentication
• Fix file descriptor double-close and leak in socketpair forwarder
• Fix use-after-free race condition in forwarder thread cleanup
• Replace volatile with atomic builtins for cross-architecture thread safety
• Validate SOCKS5 proxy port range (1-65535)
• Zero password memory before freeing
• Reject oversized socks5_proxy strings instead of silent truncation

Other Changes

• Remove unused BIO filter code (~170 lines)
• Add missing SOCKS5 reply error code 0x06 (TTL expired)
• Add SOCKS5 test suite (037-064) with 3proxy UDPMAP log verification
• Add test runner artifacts to .gitignore