gatewayd: approvals answered from Mattermost; typing paused; the notice

Implemented-By: OpenCode session (model recorded in docs/implementer-log.md)

crates/gatewayd/tests/deliver.rs

@@ -1,6 +1,6 @@
 //! A turn on `loop.sock` and its answer in the thread, against a fake `loopd`: the answer, long
 //! answers, approvals, errors, an unknown session, and a loop that is not there (M4a spec, section
-//! 8). Do not edit.
+//! 8; M4b spec, section 7, for the notice). Do not edit.
 
 #[path = "support/fake_loop.rs"]
 mod fake_loop;
@@ -11,7 +11,7 @@ use std::sync::Mutex;
 use std::time::Duration;
 
 use fake_loop::{Reply, done, error, event, serve_loop};
-use gatewayd::deliver::{EMPTY_ANSWER, LOOP_DOWN, MAX_POST, Poster, deliver, split_answer};
+use gatewayd::deliver::{EMPTY_ANSWER, LOOP_DOWN, MAX_POST, Notice, Poster, deliver, split_answer};
 use gatewayd::mm::MmError;
 use gatewayd::sessions::{Batch, Thread};
 use proto::{DataClass, ErrorCode, SessionId, Timestamp, TurnEvent};
@@ -64,9 +64,18 @@ fn batch(resume: bool, text: &str) -> Batch {
 
 fn run(dir: &TempDir, poster: &Record, batch: &Batch) -> Vec<String> {
     let log = Mutex::new(Vec::new());
-    deliver(poster, &dir.path().join("loop.sock"), batch, &|line| {
-        log.lock().unwrap().push(line.to_string())
-    });
+    let never = |_: u64| false;
+    let notice = Notice {
+        posted: &never,
+        wait: Duration::ZERO,
+    };
+    deliver(
+        poster,
+        &dir.path().join("loop.sock"),
+        batch,
+        &|line| log.lock().unwrap().push(line.to_string()),
+        &notice,
+    );
     log.into_inner().unwrap()
 }
 
@@ -127,7 +136,7 @@ fn an_approval_is_announced_once_before_the_answer() {
     assert_eq!(
         poster.texts(),
         [
-            "waiting for approval 42: approve or deny it with `bxctl` (Mattermost approvals arrive in M4b)",
+            "waiting for approval 42: brokerd has not sent it here; answer it with bxctl approvals",
             "done"
         ]
     );