ames/zuse: require >64-bit comet addresses

pkg/arvo/sys/vane/ames.hoon

@@ -1048,7 +1048,7 @@
     ^+  event-core
     ::  assert the comet can't pretend to be a moon or other address
     ::
-    ?>  (lth 64 (met 0 sndr.packet))
+    ?>  ?=(%pawn (clan:title sndr.packet))
     ::  if we already know .sndr, ignore duplicate attestation
     ::
     =/  ship-state  (~(get by peers.ames-state) sndr.packet)

pkg/arvo/sys/zuse.hoon

@@ -9176,7 +9176,7 @@
     =/  who=ship  `@`fig:ex:cub
     ::  disallow 64-bit or smaller addresses
     ::
-    ?:  (gte 64 (met 0 sndr.packet))
+    ?.  ?=(%pawn (clan:title who))
       $(eny +(eny))
     ?:  (~(has in stars) (^sein:title who))
       [who 1 sec:ex:cub ~]