Bugfix: the mixnet exit-liveness probe now races two stable targets over two
rounds instead of a single one-shot 1.1.1.1 connect, so a healthy tunnel is no
longer false-condemned and reselected forever. Fixes the intermittent
Connecting to Nym hangs that could take minutes or never resolve (verified:
15/15 cold starts connected, zero hangs).
Also: the Android versionCode/versionName now track the Goblin build number
(were frozen at GRIM's 5 / "0.3.6"), so the OS detects upgrades correctly.
2ro
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