Under the hood
Useful1 Signal1
Session marker files are written with permissions that respect your umask.
What's wrong with this entry?
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What
The in-use session marker file is now written with an explicit mode of 438 masked by the process umask rather than whatever default applied. The surrounding error handling was also flattened so a failed write no longer skips registering the follow-up path.
Evidence
{ mode: 438 & ~process.umask() }
Strings lifted out of the shipped bundle, so the claim above can be checked against them.