chore(cli): tighten up sandbox exec piping tests

[matthewlouisbrockman]

• refactors the CLI tests to better follow the js sdk patterns

following up from comments on #1127

---

Note

Low Risk
Mostly test refactoring and shared helpers; production change is a small error-path tweak to ensure remote processes are killed if stdin EOF signaling fails.

Overview
Refactors sandbox CLI integration tests to use a shared tests/setup.ts harness (runCli, runCliWithPipedStdin, env/timeout helpers) and simplifies skip logic (skip only when E2B_DEBUG is set). The backend integration tests are streamlined (looped logs/metrics, centralized CLI invocation), and the exec piping integration test now probes stdin capability before asserting byte counts to reduce flakiness in environments where piped stdin isn’t detected.

In sandbox exec, the stdin EOF failure path is simplified by inlining the best-effort remote kill and removing the helper function, keeping the “fail fast to avoid leaking a blocked process” behavior.

^{Written by Cursor Bugbot for commit f352196. This will update automatically on new commits. Configure here.}

[linear]

ENG-3497 Piping: tone down the tests / configs

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Latest commit: f352196

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[matthewlouisbrockman]

uh oh

[github-actions]

Package Artifacts

Built from c928859. Download artifacts from this workflow run.

JS SDK (e2b@2.14.2-piping-tone-down-the-tests-configs-eng-3497.0):

npm install ./e2b-2.14.2-piping-tone-down-the-tests-configs-eng-3497.0.tgz

CLI (@e2b/cli@2.8.2-piping-tone-down-the-tests-configs-eng-3497.0):

npm install ./e2b-cli-2.8.2-piping-tone-down-the-tests-configs-eng-3497.0.tgz

Python SDK (e2b==2.15.2+piping-tone-down-the-tests-configs-eng-3497):

pip install ./e2b-2.15.2+piping.tone.down.the.tests.configs.eng.3497-py3-none-any.whl