T39: review round 2: a hidden session whose row turns to waiting marks it until shown, though it went on within the same output, so one output marks as two would; a change of herdr's records draws the view again, so an open hover follows them though the state holds

src/term/herdr.rs

@@ -76,12 +76,7 @@ pub fn follow(cx: &mut Context<TerminalView>) -> Task<()> {
                         "terminal {pid}: herdr left the foreground, its agents' records with it"
                     );
                     states.clear();
-                    let gone = view.update(cx, |view, cx| {
-                        if view.records.herdr(&[]) && view.restate(cx) {
-                            view.tell_state(cx);
-                        }
-                    });
-                    if gone.is_err() {
+                    if view.update(cx, |view, cx| view.agents(&[], cx)).is_err() {
                         break;
                     }
                 }
@@ -127,9 +122,7 @@ pub fn follow(cx: &mut Context<TerminalView>) -> Task<()> {
             let Ok(still) = view.update(cx, |view, cx| {
                 let still = view.reports == reports;
                 if still {
-                    if view.records.herdr(&agents) && view.restate(cx) {
-                        view.tell_state(cx);
-                    }
+                    view.agents(&agents, cx);
                     if let Some(folder) = report.clone() {
                         cx.emit(TerminalEvent::Folder(folder));
                     }

src/term/reports.rs

@@ -4,7 +4,7 @@ use gpui::{Context, SharedString, SystemNotification};
 
 use super::{
     notify::{self, Ask, CLOSES, Notice},
-    status::{self, State, Status},
+    status::{self, Record, State, Status},
     view::{TerminalEvent, TerminalView},
 };
 use crate::{
@@ -133,6 +133,16 @@ impl TerminalView {
         changed
     }
 
+    /// herdr's agents in place of the last ones; an open hover reads them, so the view draws again.
+    pub(super) fn agents(&mut self, agents: &[(String, Record)], cx: &mut Context<Self>) {
+        if self.records.herdr(agents) {
+            if self.restate(cx) {
+                self.tell_state(cx);
+            }
+            cx.notify();
+        }
+    }
+
     /// Posts the state its row shows when it turned to waiting, done or error.
     pub(super) fn tell_state(&mut self, cx: &mut Context<Self>) {
         let body = match self.records.shown() {