Summary

This PR replaces the existing Travis CI setup with a GitHub Actions workflow.

Changes

• Added GitHub Actions workflow at .github/workflows/ci.yml

  • Runs on push and pull requests to master
  • Tests against Go 1.22.x and 1.23.x
  • Executes:
    • go test -race -count=1 -coverprofile=coverage.out ./...
    • go tool cover -func=coverage.out
    • govulncheck (Go 1.23 only)
  • Configured concurrency with cancel-in-progress per ref

• Removed legacy CI:

  • Deleted .travis.yml
  • Removed script/coverage

• Updated documentation:

  • Replaced Travis CI badge with GitHub Actions badge
  • Updated "Running Tests" section to reflect current workflow

Notes

• The issue mentions main, but the repository currently uses master, so the workflow is configured accordingly
• CI validates the build across both Go versions
• script/gen-certs.py remains unchanged as required

Closes #4