test(ci): lock image gate ruleset authority

[thebtf]

Summary

Tighten the critical image-publishing contract after the protected-path repair landed.

• require the exact post-transition credential shape: two trusted ruleset-audit bindings/consumers, one candidate clearing, and no candidate package credentials
• exercise live GitHub ruleset array responses through both ValidateRelease and the production ValidateWorkflowRun -EventOnlyValidation path
• keep the workflow-run live test hermetic by using a local Git remote whose canonical path still satisfies repository-origin validation
• reject omitted tag/main bypass_actors fields and partial credential states

Verification

go test -tags critical ./tests/critical/runtime -run TestDockerReleaseRefFreshnessGuard -count=1

Summary by CodeRabbit

• Тесты
  • Усилена проверка безопасности и корректности токенов в релизном процессе.
  • Добавлены интеграционные сценарии для проверки взаимодействия с API правил репозитория.
  • Расширено тестирование валидации релизов и запусков workflow с использованием API.
  • Уточнены проверки изоляции секретов и очистки чувствительных данных в шагах сборки.
  • Повышена стабильность сценариев работы с удалёнными репозиториями и свежестью ссылок.

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 83204bd8-23f0-4a28-8e39-5904c7bf5c3c

📥 Commits

Reviewing files that changed from the base of the PR and between a52e9e9 and 19a9585.

📒 Files selected for processing (1)

• tests/critical/runtime/image_runtime_contract_test.go

Walkthrough

Тесты усиливают контрактные проверки RULESET_AUDIT_TOKEN, добавляют интеграционный сценарий с эмулированным GitHub Rulesets API и обновляют fixture для freshness guard.

Changes

Ruleset-аудит

Layer / File(s)	Summary
Контракты токенов workflow tests/critical/runtime/image_runtime_contract_test.go	Проверяются точные количества биндингов, consumer-ов и очисток RULESET_AUDIT_TOKEN, а также ограничения секретов в candidate build.
Интеграция с Rulesets API tests/critical/runtime/image_runtime_contract_test.go	Добавлен httptest-сервер, проверка Bearer-токена и запуск ValidateRelease и ValidateWorkflowRun с параметрами GitHub API. Fixture использует вложенный remote path github.com/thebtf/engram.git.

Estimated code review effort: 4 (Complex) | ~45 minutes

Possibly related PRs

• thebtf/engram#432: Добавляет RULESET_AUDIT_TOKEN в Docker publish gate, который проверяется в этом PR.

Poem

Прыг-скок, токен очищен,
Ruleset API ловко слышен.
Bearer скачет по сети,
Все проверки расцвели.
Рады кролики в CI!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	Заголовок соответствует основному изменению: ужесточению тестов image gate и контрактов ruleset/audit token.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch test/v646-image-gate-final

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@tests/critical/runtime/image_runtime_contract_test.go`:
- Around line 530-537: Замените глобальные проверки strings.Count в
tests/critical/runtime/image_runtime_contract_test.go:530-537 проверками
содержимого каждого отдельного шага ValidateWorkflowRun: в каждом шаге
подтвердите ровно одну привязку RULESET_AUDIT_TOKEN и одного consumer-а
-GitHubToken, а для candidate execution сохраните проверку явной очистки
credential. В tests/critical/runtime/image_runtime_contract_test.go:712-719
аналогично проверяйте MARKETPLACE_PAT и READ_ONLY_GITHUB_TOKEN внутри ожидаемых
job/step-секций, а не по всему publisher.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: f1fa8478-b415-47cd-8f16-a662fa82abc8

📥 Commits

Reviewing files that changed from the base of the PR and between aacdfcf and a52e9e9.

📒 Files selected for processing (1)

• tests/critical/runtime/image_runtime_contract_test.go