Replace the "goblin-wallet" User-Agent on every Tor-carried request with a
common desktop-browser string so the wallet's traffic is not trivially
classifiable as Goblin at the destination. The default lives in one const in
the Tor client and is applied once per request; price.rs no longer passes its
own User-Agent (which sent the header twice). Also fix a stale nip05 doc
comment ("Nym mixnet" -> "Tor"). No transport change: the update check stays
on its existing clearnet path for GRIM parity.
2ro
42d70e1a5e