drain completed tasks and log webhook queue stats

src/bot.rs

@@ -61,6 +61,14 @@ impl Bot {
         let mut tasks = tokio::task::JoinSet::new();
 
         while let Some(wb) = rx.recv().await {
+            // Drain completed tasks to avoid the JoinSet growing unbounded
+            while let Some(res) = tasks.try_join_next() {
+                if let Err(e) = res {
+                    error!("Task panicked: {e}");
+                }
+            }
+
+            info!(queued = rx.len(), active = tasks.len(), "Webhook received");
             let permit = sem.clone().acquire_owned().await?;
             let self_clone = self.clone();
 
@@ -70,8 +78,8 @@ impl Bot {
             });
         }
 
-        // Le channel est fermé : on attend que les tâches en cours se terminent
+        // When all webhook tasks have completed, we can safely exit
-        // proprement avant de rendre la main
+        // properly before returning
         while let Some(res) = tasks.join_next().await {
             if let Err(e) = res {
                 error!("Task panicked: {e}");