refactor(proxy): improve SOCKS5 proxy authentication handling

refactor(config): migrate to `SDKConfig` and streamline proxy handling

rebuild branch

remove all

v6 version first commit

Update internal module imports to use `v5` package path

Add dynamic log level adjustment and "type" field to auth files response

Refactor codebase

Add openai codex support

Refactor API handlers organization and simplify error response handling

Refactor API handlers and proxy logic