⚡ Bolt: Non-blocking docker prune and disk info

[acebytes]

💡 What: Offloaded blocking I/O calls (DiskInfo.current(), waitUntilExit(), readDataToEndOfFile()) from the @MainActor to detached tasks.
🎯 Why: These synchronous calls block the main thread, leading to UI freezes during disk scans or Docker cleanups.
📊 Impact: Application remains completely responsive while docker system prune executes and disk info is calculated.
🔬 Measurement: Trigger a Docker prune via the UI or run a standard scan; verify that UI animations and responsiveness do not hitch.

---

PR created automatically by Jules for task 3927005535666130102 started by @acebytes

[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.