Add CI with test coverage

[nettee]

Summary

• add explicit CI step names and minimal read-only workflow permissions
• install llvm-tools-preview and cargo-llvm-cov in CI
• run the Rust test suite with coverage output and upload the generated lcov.info artifact

Why

The repository already ran tests in GitHub Actions, but it did not produce coverage output. This updates CI so pull requests and pushes still fail on any broken test while also collecting coverage from the same test suite.

Validation

• cargo test
• cargo llvm-cov --locked --workspace --lcov --output-path lcov.info

Closes #27

_{🔁 Powered by Looper · runner=worker · agent=codex · An autonomous AI dev team for your GitHub repos.}

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: f74846dc06

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[nettee]

Looper fixer round complete — bad01b1

• ✅ Review comment on .github/workflows/ci.yml (@chatgpt-codex-connector) — thread
  • Updated .github/workflows/ci.yml to run cargo llvm-cov --no-report and a separate cargo llvm-cov report --release, and updated tests/e2e.rs so the e2e release wtk build can target the coverage artifact directory during that CI run.

_{🔁 Powered by Looper · runner=fixer · agent=codex · An autonomous AI dev team for your GitHub repos.}

[chatgpt-codex-connector]

To use Codex here, create an environment for this repo.

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: bad01b1ff0

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[nettee]

Looper fixer round complete — c4c560f

• ✅ Review comment on .github/workflows/ci.yml (@chatgpt-codex-connector) — thread
  • Updated .github/workflows/ci.yml so the cargo llvm-cov --no-report collection step also uses --release, matching the existing cargo llvm-cov report --release command and the release-built wtk binary exercised by the e2e tests.

_{🔁 Powered by Looper · runner=fixer · agent=codex · An autonomous AI dev team for your GitHub repos.}