swarm: no SIGNATURES

Signatures sent on their own (SIGNATURES, every second, to each peer
not sent them yet) flooded every link: a signature made after its
change left, or one that came with changes, went to every neighbour,
whether or not it got the change along with its signature elsewhere.

With every change of a node signed as it leaves (1217) and signatures
going where their changes go (1218), none is left for them to carry:
the message, its task and its traffic counter go (wire version 46).
Signatures waiting for their changes are offered as before when sync
messages bring them, and the changes waiting for signatures judged
again with the next batch.

1 files changed, 6 insertions, 6 deletions

diff --git a/src/simtest/signatures.rs b/src/simtest/signatures.rs
index c6232e7..b65b3a7 100644
--- a/src/simtest/signatures.rs
+++ b/src/simtest/signatures.rs
@@ -1,7 +1,7 @@
-//! Signed changes end to end (`document::signatures`, `swarm::signatures`): nodes under
-//! the identity layer, whose node keys sign, write through the API as a user would,
-//! and every node comes to see the writes verified, by signatures that came with sync
-//! messages or on their own.
+//! Signed changes end to end (`document::signatures`): nodes under the identity layer,
+//! whose node keys sign, write through the API as a user would, and every node comes
+//! to see the writes verified, by signatures that came with the changes in sync
+//! messages.
 
 use std::time::Duration;
 
@@ -80,8 +80,8 @@ async fn a_signed_write_vouches_for_the_writes_before() {
 
     let (actor, first) = write_as_user(&b, "metrics/cpu", json!(42), false).await;
     sim.wait_converged(&[&a, &b, &c], SOON).await;
-    // Signatures go within a second: none came for it. Unless b wrote protocol data
-    // since (always signed), whose signature vouches for it too.
+    // None is made for it, nor sent. Unless b wrote protocol data since (always
+    // signed), whose signature vouches for it too.
     tokio::time::sleep(Duration::from_secs(3)).await;
     let latest = b
         .doc