🔒 Fix Directory Traversal in untar_archive

[Tcode-Motion]

🎯 What: The untar_archive function used tar::Archive::unpack instead of iterating and using tar::Entry::unpack_in, which bypassed the built-in directory traversal protections.
⚠️ Risk: An attacker could provide a maliciously crafted tar archive with absolute paths or parent directory traversals (../) to escape the intended extraction directory, potentially overwriting sensitive files on the host system.
🛡️ Solution: Replaced unpack with an iteration over archive entries, utilizing unpack_in for each entry to ensure paths are securely restricted to the destination directory during extraction.

---

PR created automatically by Jules for task 8975660819707095155 started by @Tcode-Motion

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.