Logout and log back in to Windows iCloud Drive without losing files?

Here's some additional information.

• Process Explorer shows iCloudDrive.exe consistently doing 500mb to 1gb of read I/O per second, but no network activity (what could it be doing?)
• The iCloud Drive directory in file explorer always shows the "resyncing" icon for most folders. The "resync" badge/status icon comes and goes on each item, repeatedly. This activity never seems to stop and settle into an idle state.
• Files that haven't been downloaded (i.e. exist only on iCloud, not locally) sometimes disappear from File Explorer, only to reappear 5, 10, 15 minutes later.

I found this StackExchange post and located my iCloudDrive log file. It contains tens of thousands of errors of the form:

[17716 @ Mon Feb 10 2025 17:05:08.974]  19424   WARN    BRC::ContainerScheduler::FSEventAtPath  Path doesn't exist: X:\Cloud\iCloudDrive\Shared\Recipes\Sides\Roasted Winter Squash and Parsnips with Maple Syrup and Marcona Almonds.pdf
[17716 @ Mon Feb 10 2025 17:05:08.990]  19424   WARN    BRC::ContainerScheduler::FSEventAtPath  Path doesn't exist: X:\Cloud\iCloudDrive\Shared\Recipes\Sides\Spiced Glazed Carrots with Sherry & Citrus.pdf
[17716 @ Mon Feb 10 2025 17:05:08.996]  19424   WARN    BRC::ContainerScheduler::FSEventAtPath  Path doesn't exist: X:\Cloud\iCloudDrive\Shared\Recipes\Sides\Sweet Potato Tzimmes (Vicki).pdf

... which explains the I/O and CPU usage. Something is badly broken here

Again: How can I reset things and start over without losing files?

I gave up and decided to risk that the warning was spurious. It was.

See this post for the final resolution.