[eas-cli] Add simulator session activity command

[szdziedzic]

Why

Device run session activity is being persisted as structured events, but users also need a terminal-friendly way to inspect and follow that activity without opening expo.dev.

This adds the EAS CLI consumer for:

• www event-log API: https://github.com/expo/universe/pull/28937
• Event collection and worker persistence: [build-tools][worker] Collect device run session activity events #3999

The parallel website consumer is https://github.com/expo/universe/pull/28938.

The www and collection PRs must deploy before this command is released.

How

• Added the hidden experimental eas simulator:events command. It supports an explicit session ID or the local simulator environment, repeatable producer filters, a bounded history limit, --follow, JSON snapshots, human output, and parseable NDJSON streaming.
• Expanded the DeviceRunSession GraphQL query helper to fetch the producer-neutral event-log descriptor and signed worker log URLs.
• Added abort-signal support through GraphQL and signed-file downloads so Ctrl+C immediately cancels in-flight requests and pending poll timers without stopping the remote session.
• Added a bounded, defensive NDJSON parser with device-session validation, revision-aware deduplication, unknown schema/producer support, malformed and oversized record handling, and recursive secret redaction.
• Keeps NDJSON stdout machine-parseable during transient failures; diagnostics go to stderr and incomplete terminal snapshots set a non-zero exit code.
• Verifies terminal completeness per registered producer and observed stream, requiring the appropriate successful stream.completed or stream.snapshot marker.

Example usage:

eas simulator:events --id <device-run-session-id>
eas simulator:events --id <device-run-session-id> --follow --format ndjson

Test Plan

• Focused command, parser/downloader, GraphQL client, and DeviceRunSession query suites (38 tests)
• corepack yarn typecheck in packages/eas-cli
• corepack yarn fmt:check
• Focused type-aware oxlint checks with zero warnings/errors
• git diff --check

This remains a draft until the www API and collection PR are available in a test environment for end-to-end verification with a real remote session.

[github-actions]

⏩ The changelog entry check has been skipped since the "no changelog" label is present.

[codecov]

Codecov Report

❌ Patch coverage is 86.13445% with 66 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.97%. Comparing base (4b1f785) to head (b77ac3d).

Files with missing lines	Patch %	Lines
packages/eas-cli/src/commands/simulator/events.ts	84.12%	44 Missing ⚠️
packages/eas-cli/src/simulator/events.ts	88.67%	17 Missing ⚠️
packages/eas-cli/src/graphql/client.ts	85.30%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4001      +/-   ##
==========================================
+ Coverage   59.67%   59.97%   +0.30%     
==========================================
  Files         941      943       +2     
  Lines       41319    41793     +474     
  Branches     8675     8850     +175     
==========================================
+ Hits        24654    25062     +408     
- Misses      16571    16637      +66     
  Partials       94       94              

☔ 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.