You'll notice
Useful2 Signal2
File reads reject Windows device paths before touching disk, including the Chrome extension's uploads.
What's wrong with this entry?
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What
The file-read helper and the Chrome extension's file upload now test both the raw and the normalized path for Windows NT object-namespace form and throw before any filesystem call, each with its own diagnostic string. The check is unconditional.
Evidence
read_file: NT-namespace path rejected before filesystem access
Strings lifted out of the shipped bundle, so the claim above can be checked against them.