fix(repo): avoid blocking threads when pausing

The heart moves between two positions every second as long as the ui is
being updated.

crates/cli/src/repo/handlers/advance_next.rs

@@ -53,7 +53,7 @@ impl Handler<AdvanceNext> for RepoActor {
                 let sleep_duration = self.sleep_duration;
                 let log = self.log.clone();
                 async move {
-                    std::thread::sleep(sleep_duration);
+                    actix_rt::time::sleep(sleep_duration).await;
                     do_send(&addr, ValidateRepo::new(message_token), log.as_ref());
                 }
                 .in_current_span()

crates/cli/src/repo/handlers/receive_ci_status.rs

@@ -2,7 +2,7 @@
 use actix::prelude::*;
 
 use git_next_core::git::{forge::commit::Status, graph, UserNotification};
-use tracing::{debug, Instrument as _};
+use tracing::{debug, Instrument};
 
 use crate::{
     repo::{
@@ -37,8 +37,14 @@ impl Handler<ReceiveCIStatus> for RepoActor {
                 do_send(&addr, AdvanceMain::new(next), self.log.as_ref());
             }
             Status::Pending => {
-                std::thread::sleep(sleep_duration);
-                do_send(&addr, ValidateRepo::new(message_token), self.log.as_ref());
+                let log = self.log.clone();
+                async move {
+                    actix_rt::time::sleep(sleep_duration).await;
+                    do_send(&addr, ValidateRepo::new(message_token), log.as_ref());
+                }
+                .in_current_span()
+                .into_actor(self)
+                .wait(ctx);
             }
             Status::Fail => {
                 tracing::warn!("Checks have failed");

crates/cli/src/repo/tests/handlers/receive_ci_status.rs

@@ -81,7 +81,7 @@ async fn when_fail_should_recheck_after_delay() -> TestResult {
         git::forge::commit::Status::Fail,
     )))
     .await?;
-    actix_rt::time::sleep(Duration::from_millis(1)).await;
+    actix_rt::time::sleep(Duration::from_millis(9)).await;
     System::current().stop();
 
     //then

crates/cli/src/tui/actor/model.rs

@@ -40,6 +40,15 @@ impl State {
             *tick += 1;
         }
     }
+
+    fn beating_heart(&self) -> String {
+        if self.last_update.duration_since(self.started).as_secs() % 2 == 0 {
+            "💚 "
+        } else {
+            " 💚"
+        }
+        .to_string()
+    }
 }
 
 #[derive(Clone, Debug, PartialEq, Eq)]
@@ -326,11 +335,8 @@ impl StatefulWidget for &State {
             .title(
                 Title::from(Line::from(vec![
                     " [q]uit ".into(),
-                    format!(
-                        "{}s ",
-                        self.last_update.duration_since(self.started).as_secs()
-                    )
-                    .into(),
+                    self.beating_heart().into(),
+                    " ".into(),
                 ]))
                 .alignment(Alignment::Center)
                 .position(ratatui::widgets::block::Position::Bottom),