Handle binary package files during clone by using download endpoint

[imrishabh18]

Motivation

• tsci clone previously assumed file content was returned as text and failed to restore binary files.
• The registry exposes an is_text flag on package_files/get and a separate package_files/download endpoint for binary content, so the clone flow must use those to restore files correctly.

Description

• Update the package_files/get response type to include package_file_id, is_text, and nullable content_text and read those fields.
• When is_text is true and content_text is a string, write the file with fs.writeFileSync(fullPath, contentText); otherwise call package_files/download with the package_file_id and write the returned arrayBuffer as a Buffer.
• Preserve existing error handling and add a warning when a file has no content or cannot be restored.
• Changes are contained in cli/clone/register.ts and only affect the clone file restore logic.

Testing

• No automated tests were run for this change.

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Codex Task

[tscircuitbot]

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PR Rating: ⭐⭐
Impact: Minor

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