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496ebf2a47
First, we write the key a whole lot less. We write it on creation, then never again. Second, it's in a file we control very closely. Instead of blindly regenerating the key if the target file generates an error on read, we block startup unless the error is 'ENOENT' - the file isn't there at all. This still allows for the key.txt file to be deleted or corrupted somehow, but it should be a lot less common than the high-traffic config.json used for window location and media permissions.