Run linter in CI #24
Description
Summary
Add a GitHub Actions workflow that runs the project linter on every Pull Request and blocks merges if linting fails, ensuring consistent code quality and formatting standards.
Goals
- Execute linting automatically on every PR.
- Fail CI if any linting errors occur.
- Reduce code review noise related to formatting and basic rule violations.
Non-Goals
- Auto-fixing lint issues in CI (developers fix locally).
- Enforcing coverage thresholds.
- Replacing unit tests or static security analysis (separate workflows).