kind e2e: a node on the mesh holds routers, it keeps no DHT

get_mesh_info no longer reports dht_size; the check that the local node
is on the mesh reads attached_routers instead.

Author: aojea

development/kind/test-mesh-e2e.sh

@@ -42,7 +42,7 @@ mcp() { ./bin/mcp-client -url "$URL" -token "devtoken" -timeout 20 "$@" 2>/dev/n
 echo "== get_mesh_info =="
 info=$(mcp -tool get_mesh_info -args '{}')
 echo "$info"
-echo "$info" | jq -e '.router_peer_id != "" and (.dht_size > 0)' >/dev/null \
+echo "$info" | jq -e '.router_peer_id != "" and (.attached_routers | length > 0)' >/dev/null \
   || { echo "get_mesh_info assertion failed"; exit 1; }
 
 echo "== discover services / find calculator (poll) =="