This is a large-scale refactoring across the codebase that replaces the custom
`gperr.Error` type with Go's standard `error` interface. The changes include:
- Replacing `gperr.Error` return types with `error` in function signatures
- Using `errors.New()` and `fmt.Errorf()` instead of `gperr.New()` and `gperr.Errorf()`
- Using `%w` format verb for error wrapping instead of `.With()` method
- Replacing `gperr.Subject()` calls with `gperr.PrependSubject()`
- Converting error logging from `gperr.Log*()` functions to zerolog's `.Err().Msg()` pattern
- Update NewLogger to handle multiline error message
- Updating `goutils` submodule to latest commit
This refactoring aligns with Go idioms and removes the dependency on
custom error handling abstractions in favor of standard library patterns.
* refactor: simplify io code and make utils module independent
* fix(docker): agent and socket-proxy docker event flushing with modified reverse proxy handler
* refactor: remove unused code
* refactor: remove the use of logging module in most code
* refactor: streamline domain mismatch check in certState function
* tweak: use ecdsa p-256 for autocert
* fix(tests): update health check tests for invalid host and add case for port in host
* feat(acme): custom acme directory
* refactor: code refactor and improved context and error handling
* tweak: optimize memory usage under load
* fix(oidc): restore old user matching behavior
* docs: add ChatGPT assistant to README
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Co-authored-by: yusing <yusing@6uo.me>
