eng-557 build centralized linting system for all repos

[CDeltakai]

Description

This PR will implement a centralized linting system which will allow all MatrixAI repos to import from a single linting package (this one) and apply appropriate linting rules without further intervention. It should also allow downstream repos to extend the system in order to ignore certain rules or add project-specific rules.

Issues Fixed

• Fixes Create centralized linting system that can be applied to all MatrixAI repos, regardless of project-specific linting rules #7

Tasks

🔧 Repository Refactor

• 1. Rename the repository from js-eslint to js-lint
• 2. Update package.json:
  • 2.1 Change package name to @matrixai/lint
  • 2.2 Add a bin entry:

    "bin": {
      "lint": "dist/bin/lint.js"
    }

🧰 Lint Command Implementation

• 3. Create src/bin/lint.ts
• 4. Follow structure and logic of zeta.house/scripts/lint.mjs
• 5. Implement lint runners for:
  • 5.1 eslint for JS/TS files
  • 5.2 prettier for markdown
  • 5.3 shellcheck for shell scripts
  • 5.4 clang-format for C/C++
  • 5.5 nixfmt for Nix files
  • 5.6 rustfmt for Rust files
• 6. Ensure the script:
  • 6.1 Checks if each native dependency exists before executing
  • 6.2 Uses a fast, cross-platform commandExists utility

🧪 Add Utility Function

• 7. Implement commandExists(programName: string): boolean that:
  • 7.1 Works on Linux, macOS, and Windows
  • 7.2 Is fast and lightweight
  • 7.3 Returns true/false for command existence
• 7A. We need this package to be extendable by downstream repos as well so they can extend the package and ignore certain rules or implement custom rules if need be.

📦 Package Dependencies

• 8. Add all relevant eslint, @typescript-eslint, prettier, and related dependencies
• 9. Refer to zeta.house package.json as a baseline
• 10. Do not include native tools like shellcheck or clang-format in package.json

🔁 Plugin De-emphasis

• 11. Do not export an ESLint plugin as the main export
• 12. Optionally retain plugin code for internal use only

🚀 Prepare for Release

• 13. Tag the repo with version v0.0.1 (CI will handle publishing)

🌱 Downstream Integration

• 14. Create a feature branch in js-logger
• 15. Integrate @matrixai/lint and verify it runs correctly
• 16. Optionally filter directories or extend the lint command if needed

Final checklist

• Domain specific tests
• Full tests
• Updated inline-comment documentation
• Lint fixed
• Squash and rebased
• Sanity check the final build

[linear]

ENG-557