chore(main): release packages-js 0.3.0

[github-actions]

🤖 I have created a release beep boop

0.3.0 (2026-07-31)

⚠ BREAKING CHANGES

• js: img2num no longer offloads WASM execution to a background thread automatically. Heavy operations (gaussianBlur, bilateralFilter, kmeans, imageToSvg) now run on whichever thread calls them. This can block the calling thread (browser main thread/UI or the Node event loop during processing. Consumers who need non-blocking behavior must now wrap calls in their own Worker or worker_thread.

✨ Features

• example app: add html-js example app to demo basic library usage (72c4669)

📚 Documentation

• CSS: fix table of contents styling and layout (72c4669)
• README.md: add alt attributes to language icons and badges (#498) (21cf395), closes #492
• update JSDoc comments and break up website docs (72c4669)
• website: update documentation based on refactor in #510 (72c4669)

♻️ Refactoring

• js: run WASM calls on the caller's thread instead of a Worker (#510) (72c4669)

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[Ryan-Millard]

This release is waiting for other changes beforehand. More specifically, #483 is the fix required to enable cross-target support. We need proper support for JavaScript, so it is better to wait for this change. Additionally, it is a breaking change, too, so waiting allows us to avoid too many separate breaking changes in quick succession.

[github-actions]

❌ This PR targets main directly — please retarget it to dev

Direct merges into main are not permitted. Please update the base branch of this PR to dev.

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This comment will reappear on every push until the base branch is changed.

We block direct merges to main to ensure the quality of production code.

The base branch was changed.