Preserve channel identity in member adapter fixtures

tests/test_member_adapter.c

@@ -29,6 +29,9 @@ static void test_owner_sizes(struct UASYNC* ua) {
     struct UTUN_INSTANCE source, target; setup(&source, ua); setup(&target, ua);
     uint8_t x[32] = {9}, priv[32] = {7}, pub[32], owner_priv[32] = {8}, owner_pub[32], zero[64] = {0};
     public_key(priv, pub); public_key(owner_priv, owner_pub);
+    /* setup создаёт пустой канал с тестовым ключом; новую идентичность создаём как новый канал. */
+    assert(topo_node_sqlite_channel_delete(source.topo_sqlite_db, "1001") == 0);
+    assert(topo_node_sqlite_channel_delete(target.topo_sqlite_db, "1001") == 0);
     assert(topo_node_sqlite_channel_put(source.topo_sqlite_db, "1001", "test", 1, x, NULL, owner_pub, owner_priv, zero) == 0);
     assert(topo_node_sqlite_channel_put(target.topo_sqlite_db, "1001", "test", 1, x, NULL, owner_pub, NULL, zero) == 0);
     uint64_t nid = sc_derive_node_id_from_pubkey(x);