* fix: remove undefined errorutil.ShowStackTrace
* feat: add make lint support and integrate with test
* refactor: migrate errorutil to errkit across codebase
- Replace deprecated errorutil with modern errkit
- Convert error declarations from var to func for better compatibility
- Fix all SA1019 deprecation warnings
- Maintain error chain support and stack traces
* fix: improve DNS test reliability using Google DNS
- Configure test to use Google DNS (8.8.8.8) for stability
- Fix nil pointer issue in DNS client initialization
- Keep production defaults unchanged
* fixing logic
* removing unwanted branches in makefile
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Co-authored-by: Mzack9999 <mzack9999@protonmail.com>