feat(Worklets): getCurrentThreadId function

[tjzel]

Summary

I added a utility function to check current thread id from JavaScript.

TODO: add docs

Test plan

I added a new runtime test suite.

Changelog

• I added an entry to the Unpublished section of each changed package's CHANGELOG.md, or this PR does not change react-native-reanimated or react-native-worklets.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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Run ID: 887cddb7-5445-446a-b8fa-af80dcaf5f9c

📥 Commits

Reviewing files that changed from the base of the PR and between 99a2ce1 and e0a8d57.

📒 Files selected for processing (1)

• docs/docs-worklets/docs/utility/getCurrentThreadId.mdx

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

• docs/docs-worklets/docs/utility/getCurrentThreadId.mdx

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📝 Walkthrough

Walkthrough

Adds the public getCurrentThreadId API to Worklets. The native JSI proxy serializes the current thread ID and returns it as a string. TypeScript declarations, native delegation, worklet exports, package exports, and the mock API now include the method. The web implementation throws an unsupported-platform error. Runtime tests and documentation cover the API.

Merge Risk: ⚪ Minimal · up to e0a8d

The PR adds a utility for reading the current thread ID with accompanying runtime coverage and documentation; no actionable merge-blocking risk remains beyond normal checks and review.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely identifies the primary change: adding the getCurrentThreadId function to Worklets.
Description check	✅ Passed	The description directly relates to the changeset. It identifies the new utility function, runtime test suite, and changelog update.
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.

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Actionable comments posted: 1

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 4e38257b-00e5-43a3-832b-f7e5d1627924

📥 Commits

Reviewing files that changed from the base of the PR and between 27f17e8 and 99a2ce1.

📒 Files selected for processing (5)

• apps/common-app/runtime-tests/worklets/suites.ts
• apps/common-app/runtime-tests/worklets/tests/runtimes/getCurrentThreadId.test.tsx
• docs/docs-worklets/docs/utility/getCurrentThreadId.mdx
• packages/react-native-worklets/src/threads.native.ts
• packages/react-native-worklets/src/threads.ts

🚧 Files skipped from review as they are similar to previous changes (2)

• packages/react-native-worklets/src/threads.native.ts
• packages/react-native-worklets/src/threads.ts

Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review.