[gander]

Summary

This PR introduces a GitHub Actions CI workflow to automate code quality checks and testing on pull requests.

Changes

• Added .github/workflows/ci.yml with a CI pipeline that runs on pull request events
• Configured the workflow to execute on pull request creation and updates
• Set up Node.js 24.x and Bun runtime environments
• Automated the following checks:
  • Dependency installation via bun install
  • Linting and formatting validation with bun run check
  • TypeScript type checking with bun run typecheck
  • Test suite execution with bun run test:run

Implementation Details

• Workflow triggers on pull_request events (opened, synchronize) and manual dispatch
• Uses ubuntu-latest runner for consistency
• Leverages Bun as the package manager and test runner for faster execution
• All checks must pass before code can be merged