[Critical Bug] Spacedrive automatically deletes root-level folder named "tmp" on tracked volumes

Check for other issues

• I've checked for other issues, and none exist.

Issue description

When Spacedrive starts with default settings, any folder named tmp located at the root of a tracked volume is automatically deleted.
This happens even when the folder is non-empty and contains large amounts of data.

Other folder names at the same location (e.g., temp, cache, part) are not affected.

Actual Behavior:
Only the root-level folder named tmp is deleted on startup.
Other folder names are not affected.

Steps to reproduce

1. Create a folder at the root of any system volume, e.g.:
   复制

   H:\tmp

2. Place any files inside the folder (size does not matter; tested with >1TB).
3. Start Spacedrive with default settings.
4. Observe that:
   • H:\tmp is deleted automatically.
   • Other folders at the same level (e.g., H:\temp, H:\cache, H:\part) remain untouched.

Platform and versions

• OS: Windows 11 26200.8246
• Spacedrive: [v2.0.0-alpha.2]

Stack trace

Additional context

Additional Notes:

• The deletion does not appear in daemon logs.
• The issue occurs on multiple volumes.
• The issue does not occur for non-root folders (e.g., H:\Downloads\tmp).
• The issue is reproducible on a clean installation with default configuration.

Code of Conduct

• I agree to follow the Code of Conduct.