`icloud_private_relay` is Apple's list of Private Relay networks, downloaded once a day. Every result gains `flags.is_relay`.
`parseProtonVPN` becomes `parseLinesNotEmpty`, shared with the new parser, which reads only each line's first column.
Judgement call: a line with no comma fails the parse, so a plain list of networks at Apple's URL cannot replace a good copy.
Model: opus-5-5