fix(devtools-kit): pass cwd to execa

[huang-julien]

🔗 Linked issue

📚 Description

Ran into some issues when starting devtools in local mode.
Seems like execa gets cwd from nodeOptions now

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 99ef004b-040b-4964-acb1-a93dc1e91d79

📥 Commits

Reviewing files that changed from the base of the PR and between d8df20b and bf3acde.

📒 Files selected for processing (1)

• packages/devtools-kit/src/index.ts

🚧 Files skipped from review as they are similar to previous changes (1)

• packages/devtools-kit/src/index.ts

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📝 Walkthrough

Walkthrough

The startSubprocess() implementation in packages/devtools-kit/src/index.ts was modified so the spawned process working directory is set from execaOptions.cwd when present; if execaOptions.cwd is absent it falls back to execaOptions.nodeOptions?.cwd. This change only affects the nodeOptions.cwd value passed into the subprocess execution call and does not alter subprocess lifecycle, environment merging, or hook wiring.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: passing cwd to execa in the devtools-kit package, which matches the implementation.
Description check	✅ Passed	The description is related to the changeset, explaining the motivation (devtools issues in local mode) and the fix (passing cwd to execa).

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✨ Finishing Touches

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• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/startsubprocess_cwd

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@packages/devtools-kit/src/index.ts`:
- Around line 51-54: The nodeOptions object assignment currently overwrites any
existing execaOptions.nodeOptions.cwd with execaOptions.cwd even when
execaOptions.cwd is undefined; change the cwd assignment in the nodeOptions
block so it uses execaOptions.cwd only when it is defined and otherwise
preserves execaOptions.nodeOptions.cwd (i.e., use a nullish-coalescing style
fallback for cwd), leaving the rest of the nodeOptions spread untouched (refer
to the nodeOptions object in packages/devtools-kit/src/index.ts).

🪄 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: 342a7d6c-3e35-4337-8919-b839d6772776

📥 Commits

Reviewing files that changed from the base of the PR and between ce21c44 and d8df20b.

📒 Files selected for processing (1)

• packages/devtools-kit/src/index.ts