huskies: merge 1216 story Shorten long-turn notification to "Working..."

server/src/chat/transport/matrix/bot/messages/handle_message.rs

@@ -19,7 +19,7 @@ use super::format_user_prompt;
 
 /// Text posted to the room by [`spawn_digging_in_watcher`] when a turn runs
 /// long without emitting any user-facing text.
-const DIGGING_IN_MESSAGE: &str = "Still digging in — this turn is taking a bit longer than usual.";
+const DIGGING_IN_MESSAGE: &str = "Working...";
 
 /// Spawns a background watcher that posts a single "digging in" notice to
 /// `room_id` if `threshold` elapses before `sent_any_text` becomes `true`.
@@ -392,7 +392,7 @@ mod tests {
     }
 
     /// AC 1: a turn that runs longer than the threshold without sending any
-    /// text gets exactly one "digging in" notice.
+    /// text gets exactly one "Working..." notice.
     #[tokio::test]
     async fn digging_in_fires_after_threshold_when_no_text_sent() {
         let transport = Arc::new(CapturingTransport::new());
@@ -405,14 +405,7 @@ mod tests {
         );
         handle.await.unwrap();
         assert_eq!(transport.sent_count(), 1);
-        assert!(
-            transport
-                .last_message()
-                .unwrap()
-                .to_lowercase()
-                .contains("digging in"),
-            "notice should mention 'digging in'"
-        );
+        assert_eq!(transport.last_message().unwrap(), "Working...");
     }
 
     /// AC 2: if text is sent before the threshold elapses, the watcher must