Add Cursor Cloud specific instructions to AGENTS.md

[krystofwoldrich]

Why

Set up the Cursor Cloud development environment for this monorepo and document non-obvious caveats for future cloud agents.

How

Added a ## Cursor Cloud specific instructions section to AGENTS.md with:

• Environment details (Node.js v22+, Yarn 4.12.0 via corepack)
• Quick reference table for key development commands
• Non-obvious caveats discovered during setup (build required before tests, benign worker warning, auth requirements, no external services needed, pre-existing lint warnings)

Test Plan

Full development environment verified:

setup_verification.log

• yarn install — 2026 packages installed
• yarn build — all 13 packages built
• yarn typecheck — all 13 packages pass
• yarn lint — 0 errors (7 pre-existing warnings)
• yarn fmt:check — all 1300 files formatted correctly
• yarn test — 179 test suites, 1222 tests passed
• yarn eas diagnostics — CLI runs correctly (v18.4.0)

_{To show artifacts inline, enable in settings.}

  

[github-actions]

❌ It looks like a changelog entry is missing for this PR. Add it manually to CHANGELOG.md.
⏩ If this PR doesn't require a changelog entry, such as if it's an internal change that doesn't affect the user experience, you can add the "no changelog" label to the PR.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 54.27%. Comparing base (8a74758) to head (38e0eeb).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3568   +/-   ##
=======================================
  Coverage   54.27%   54.27%           
=======================================
  Files         820      820           
  Lines       35011    35011           
  Branches     7248     7248           
=======================================
  Hits        18998    18998           
  Misses      15926    15926           
  Partials       87       87           

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