chore: add linter config file and fix findings

[sahidvelji]

This PR

• adds this new feature

Related Issues

Fixes #1234523

Notes

Follow-up Tasks

How to test

[gemini-code-assist]

Summary of Changes

Hello @sahidvelji, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the project's code quality and maintainability by integrating golangci-lint. It includes the setup of a comprehensive linter configuration, updates to build processes and documentation to incorporate the new linting tools, and a series of code modernizations and cleanups to address identified issues and update dependencies. The changes aim to ensure a higher standard of code consistency and reduce potential bugs.

Highlights

• Linter Integration: Introduced golangci-lint with a new configuration file (.golangci.yml) to enforce code quality and consistency across the Go codebase. This includes enabling various linters and formatters like gofumpt and gci.
• Build and Documentation Updates: Updated Makefile targets (fmt, lint, lint-fix) to utilize golangci-lint and upgraded its version. The CONTRIBUTING.md was also updated to reflect the new pre-commit hook using golangci-lint fmt.
• Dependency Updates: Numerous direct and indirect Go module dependencies in go.mod and go.sum have been updated to their latest versions, ensuring the project uses up-to-date libraries.
• Code Modernization and Cleanup: Replaced interface{} with any in several Go files for improved type safety and adherence to modern Go practices. Various minor code cleanups, such as removing unused imports, unnecessary blank lines, and clarifying octal file permissions, were also performed.
• Test Refactoring: Refactored test setup in internal/cmd/config_test.go to leverage t.TempDir() and t.Chdir() for more robust and cleaner temporary directory and working directory management within tests.

Ignored Files

• Ignored by pattern: .github/workflows/** (1)
  • .github/workflows/pr-lint.yml

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[gemini-code-assist]

Code Review

This pull request introduces golangci-lint to the project and applies a wide range of fixes based on its findings. The changes significantly improve code style, correctness, and maintainability across the codebase. Key improvements include adopting modern Go testing practices (like t.Context() and t.TempDir()), using any instead of interface{}, refactoring for better readability, and ensuring consistent code formatting. The new linter configuration in .golangci.yml is a great addition for maintaining code quality going forward. I have a couple of suggestions regarding the golangci-lint installation command in the Makefile.

[gemini-code-assist]

The golangci-lint installation path and version appear to be incorrect. The official golangci-lint tool does not use a /v2 in its module path, and version v2.7.1 (as well as the previous v1.64.0) does not seem to be a public release. The latest public version is v1.59.1.

This might be a typo or refer to a private fork. If it's a typo, this command could fail for contributors. To ensure it works for everyone, I'd recommend using an official version.

		go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.59.1; \

[gemini-code-assist]

The golangci-lint installation path and version appear to be incorrect. The official golangci-lint tool does not use a /v2 in its module path, and version v2.7.1 (as well as the previous v1.64.0) does not seem to be a public release. The latest public version is v1.59.1.

This might be a typo or refer to a private fork. If it's a typo, this command could fail for contributors. To ensure it works for everyone, I'd recommend using an official version.

		go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.59.1; \

[gemini-code-assist]

Using range over an integer value is a great use of a new Go 1.22 feature. However, to maintain compatibility with older Go versions (the go.mod file specifies Go 1.24 but the toolchain is 1.24.1, which is fine, but as a general practice for open source projects), it might be safer to stick to the traditional for loop. If the project's minimum Go version is strictly enforced as 1.22+, then this is perfectly fine.