fix: make react an optional peer dependency of the CLI

[AndreyHirsa]

Summary

Make react an optional peer dependency of the lingo.dev CLI so installs no longer force react@19.2.3 and stop breaking repos with strict-peer-deps enabled that use a different React major.

Changes

• Removed react from lingo.dev (packages/cli) direct dependencies and declared it as an optional peer dependency (react: ">=18 <20", peerDependenciesMeta.react.optional = true).
• Updated pnpm-lock.yaml to match (one-line specifier change; --frozen-lockfile stays green).
• Added a patch changeset.

Testing

Business logic tests added:

• N/A — this is a dependency-manifest change with no runtime code change, so no business-logic tests apply.
• All tests pass locally

Visuals

N/A

Checklist

• Changeset added (if version bump needed)
• Tests cover business logic (not just happy path) — N/A, dependency-manifest change only
• No breaking changes

Closes N/A

Summary by CodeRabbit

• Chores
  • Updated package settings so React is now treated as an optional peer dependency.
  • This makes installation more flexible for projects that already provide React, while still supporting compatible React versions.

[coderabbitai]

📝 Walkthrough

Walkthrough

The react package is removed from the CLI's direct dependencies and re-declared as an optional peer dependency with a version range of >=18 <20. A patch-level changeset is added to document this change for lingo.dev.

Changes

react optional peer dependency

Layer / File(s)	Summary
react moved to optional peerDependency packages/cli/package.json, .changeset/react-optional-peer.md	Removes react@19.2.3 from dependencies, adds peerDependencies with >=18 <20, marks it optional via peerDependenciesMeta, and adds a patch changeset entry.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Suggested reviewers

• cherkanovart

Poem

🐇 A dependency freed from its chain,
Now optional, it need not remain.
Peer it shall be, versions eighteen to twenty,
The CLI stands light, with flexibility plenty.
Hop hop, the changeset is done! 🎉

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description follows the template with Summary, Changes, Testing, Visuals, and Checklist sections filled out.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly matches the main change: the CLI now treats react as an optional peer dependency instead of a direct dependency.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/cli-react-optional-peer

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