⚡ Bolt: Offload blocking I/O to detached tasks to improve UI responsiveness

[acebytes]

💡 What: Wrap synchronous file system calls (DiskInfo.current()) and blocking process invocations (process.run(), process.waitUntilExit(), readDataToEndOfFile()) in Task.detached.

🎯 Why: In CacheoutViewModel, these operations were being executed synchronously inside an async function on the @MainActor (as it is an ObservableObject). This blocks the main thread, causing UI freezes/hitches, particularly noticeable during Docker pruning which can take several seconds.

📊 Impact: Keeps the UI completely responsive during the initial cache scanning phase and the potentially long-running Docker pruning process. Avoids dropping frames.

🔬 Measurement: Run a Docker prune through the Cacheout app menu while simultaneously interacting with the UI (e.g., clicking on menu items). The UI should remain smooth and responsive instead of beachballing.

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PR created automatically by Jules for task 8485737782158240067 started by @acebytes

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