[franco-mariani]

Every specs job is red even when all specs pass: the old codecov gem uploads from SimpleCov's at_exit inside bundle exec rake, Codecov rejects the tokenless upload (Rate limit reached…), and the process exits 1. Codecov hasn't received an upload since 2023-08-18 (#20), and the codecov gem is deprecated (its repo is archived, last release 0.6.0 in Aug 2021).

• Removes the codecov gem and the Codecov workflow step.
• Keeps SimpleCov and adds minimum_coverage 98 in CI (currently 98.73%), so a PR that drops coverage fails the specs job.
• Writes the line coverage to the job summary and uploads the HTML report as a coverage-ruby- artifact.
• Drops Ruby 2.7 from the matrix: the lockfile has pinned nokogiri 1.17.2 (Ruby >= 3.0) since Dec 2024, so 2.7 fails at bundle install. RuboCop's TargetRubyVersion moves to 3.0.

Before merging, an admin needs to remove specs (2.7) from the required checks on main.

Follow-ups (separate PRs): Pronto + RuboCop on PRs, Brakeman, dependency and Ruby upgrade maybe? (refresh the lockfile, test 3.3/3.4/4.0, raise required_ruby_version)

[Copilot]

🟡 Changes recommended

The gemspec introduces a consumer-facing Ruby compatibility restriction that the PR description explicitly excludes.

1 open issue

• Avoid raising the gem's minimum Ruby version to 3.0 · New

What changed in this PR

This PR separates coverage uploads from test execution so Codecov upload failures no longer fail otherwise passing specs.

Changes:

• Replace the Codecov gem integration with SimpleCov JSON output.
• Upgrade the workflow to Codecov Action v5 with an explicit token and coverage file.
• Remove Ruby 2.7 from CI and raise the lint target and gem minimum to Ruby 3.0.

File	Description
spec/​spec_helper.rb	Generate JSON coverage in CI instead of uploading from SimpleCov.
graphql_to_rest.gemspec	Raise the minimum supported Ruby version to 3.0.
Gemfile.lock	Remove the locked Codecov dependency.
Gemfile	Remove the Codecov test dependency.
.rubocop.yml	Set the Ruby lint target to 3.0.
.github/​workflows/​main.yml	Drop Ruby 2.7 and configure Codecov Action v5 uploads.

_{Review effort: Balanced}

[Copilot]

🟢 Approval recommended

The coverage formatter, dependency changes, and non-fatal upload configuration are consistent, with no unresolved blocking findings.

No open issues 🎉

1 resolved since last review

• Avoid raising the gem's minimum Ruby version to 3.0

_{Review effort: Balanced}

[Copilot]

🟢 Approval recommended

No blocking code issues remain; merging still requires the documented removal of the Ruby 2.7 required check.

No open issues 🎉

_{Review effort: Balanced}

[franco-mariani]

Splitting the work in two different PRs #26 & #27