tests: improve golangci-lint local install and bump version

[murfffi]

also minor polishing in Makefile

[gemini-code-assist]

Summary of Changes

Hello @murfffi, 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 focuses on improving the developer experience by streamlining the local setup for code quality tools and enhancing the project's Makefile structure. It ensures that golangci-lint is consistently installed and used at a specific version, while also making the Makefile more organized and user-friendly for common development tasks.

Highlights

• Enhanced Local Linting Setup: The Makefile has been updated to improve the local installation and execution of golangci-lint, ensuring a consistent development environment for code quality checks.
• golangci-lint Version Bump: The golangci-lint tool is now explicitly installed at version v2.5.0, aligning with potentially newer features or fixes for static analysis.
• Makefile Refactoring: Tool installation targets, including tools/ts and the new tools/golangci-lint, have been moved to a dedicated 'Tools targets' section for better organization and clarity.
• Default Goal and Gitignore Updates: The Makefile now explicitly sets 'test' as the default goal, and .gitignore has been updated to include .idea/ for IDE files and the general tools/ directory.

Ignored Files

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

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[gemini-code-assist]

Code Review

This pull request improves the local development setup by installing golangci-lint as a binary instead of using go run, which should improve performance. The Makefile is also nicely refactored. However, there is a critical issue in the new golangci-lint installation command that will cause it to fail due to an incorrect version number. I've provided a fix for this and an additional suggestion to automate the tool's update process, addressing a point you noted in a comment.