test(search): wait for the real scan before seeding sessions

The search's own scan runs on a real thread. On CI it landed after the
test seeded its rows and replaced them, so the edit gesture found no
row. The test now waits for the scan first. Assertion messages no
longer print session ids (CodeQL rust/cleartext-logging).

Claude-Session: https://claude.ai/code/session_01JRqYZ9E153WpSHGS2AW3BM

src/ui/search/view.rs

@@ -343,6 +343,9 @@ pub struct SearchView {
     /// Preset index the theme picker is currently previewing, so the same
     /// theme is not re-applied on every redundant selection event.
     previewing: Option<usize>,
+    /// How many session lists have arrived since the search opened. A test
+    /// waits on it: the scan runs on a real thread and lands when it lands.
+    sessions_landed: usize,
     _sub: Subscription,
 }
 
@@ -373,6 +376,7 @@ impl SearchView {
             tab,
             parked_query: None,
             previewing: None,
+            sessions_landed: 0,
             _sub,
         }
     }
@@ -459,6 +463,7 @@ impl SearchView {
         window: &mut Window,
         cx: &mut Context<Self>,
     ) {
+        self.sessions_landed += 1;
         let mut catalog = (*self.catalog).clone();
         catalog.sessions = sessions;
         catalog.sessions_here = here;
@@ -1027,9 +1032,18 @@ mod tests {
         app.update_in(&mut vcx, |app, window, cx| {
             app.open_search(SearchTab::Sessions, "", window, cx)
         });
-        // Whatever this machine's own scan finds lands first, and is replaced.
-        vcx.run_until_parked();
+        // This machine's own scan runs on a real thread. Let it land before
+        // replacing what it found, or it lands afterwards and replaces ours.
         let view = open(&app, &mut vcx);
+        let deadline = std::time::Instant::now() + std::time::Duration::from_secs(30);
+        while view.read_with(&vcx, |view, _| view.sessions_landed) == 0 {
+            assert!(
+                std::time::Instant::now() < deadline,
+                "the scan never landed"
+            );
+            std::thread::sleep(std::time::Duration::from_millis(10));
+            vcx.run_until_parked();
+        }
         view.update_in(&mut vcx, |view, window, cx| {
             view.set_sessions(vec![past_session("a"), past_session("b")], 0, window, cx)
         });
@@ -1048,7 +1062,7 @@ mod tests {
             },
             CommandKind::CopySessionId("a".into()),
         ] {
-            assert!(actions.contains(&wanted), "{wanted:?} in {actions:?}");
+            assert!(actions.contains(&wanted));
         }
 
         vcx.simulate_input("remove");
@@ -1065,7 +1079,7 @@ mod tests {
             );
         });
         let left = row_kinds(&view, &mut vcx);
-        assert_eq!(left.len(), 1, "{left:?}");
+        assert_eq!(left.len(), 1);
         assert!(
             matches!(&left[0], CommandKind::ResumeSession { session_id, .. } if session_id == "b")
         );