This commit introduces the `refreshAllPreviews` method in the `PreviewsStore` class, which iterates through all previews and triggers a file change broadcast for each. This ensures that all previews are updated after a file save operation.
refactor(CodeBlock): handle unsupported languages by falling back to plaintext
The `CodeBlock` component now defaults to 'plaintext' when an unsupported language is detected, improving the user experience by avoiding unsupported language errors.
prompts: update dependency installation instructions
The prompts documentation has been updated to clarify the process of installing dependencies, emphasizing the importance of updating `package.json` first and avoiding individual package installations.
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