[eas-cli] Add --max-idle-time-minutes flag to eas simulator

[szdziedzic]

Why

EAS Simulator sessions cost money while they run. Today a session that nobody uses keeps running until its max duration. This PR adds the CLI half of an opt-in idle timeout: the user sets it when starting the session, and EAS stops the session after that many minutes without activity.

Related PRs:

• Server side: https://github.com/expo/universe/pull/29784 (stores maxIdleTimeMinutes and passes the max_idle_time_minutes step input)
• Enforcement: [build-tools] Stop remote simulator sessions after max_idle_time_minutes without activity #4157 (build-tools observes activity and stops the session)

How

Add new --max-idle-time-minutes integer flag. It is passed as maxIdleTimeMinutes on CreateDeviceRunSessionInput.

Test Plan

CI passes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.98%. Comparing base (1ec9e83) to head (bca121e).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4156      +/-   ##
==========================================
+ Coverage   62.98%   62.98%   +0.01%     
==========================================
  Files        1020     1020              
  Lines       46382    46385       +3     
  Branches     9787     9788       +1     
==========================================
+ Hits        29208    29211       +3     
  Misses      15717    15717              
  Partials     1457     1457              

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[github-actions]

🤖 AI code review

Decision: Approve

Overall PR risk: Low. The change is additive: it adds one optional --max-idle-time-minutes flag to the eas simulator command and forwards it as maxIdleTimeMinutes in the existing createDeviceRunSession mutation input. When the user omits the flag, the request keeps its previous shape, so existing sessions are not affected. No reviewer reported a critical or warning finding; the eas simulator command stays hidden and experimental, and the blast radius is small, with an easy rollback by reverting the flag and mutation field.

No findings.

---

This review is advisory — it never blocks a merge and never auto-approves.

[github-actions]

✅ Thank you for adding the changelog entry!

[github-actions]

Subscribed to pull request

File Patterns	Mentions
packages/eas-cli/**	@douglowder

Generated by CodeMention

Warning: The preamble and epilogue options in commentConfiguration are deprecated. Use template instead.