fix(chat): reprise robuste au retour d'un layout non conversationnel (composer verrouillé selon l'état réel, replay complet du scrollback, plus de fausse terminaison 'no reply') (#190)

crates/app-tauri/src/commands.rs

@@ -2415,6 +2415,7 @@ pub async fn agent_send(
     let meta = state.structured_sessions.meta_for_session(&sid);
     std::thread::spawn(move || {
         let mut terminal_visible = false;
+        let mut streamed_text = String::new();
         let mut settler = crate::chat::ProgressSettler::default();
         for event in stream {
             // Non-terminal, sans contenu chat : un signal de limite alimente le service
@@ -2445,6 +2446,9 @@ pub async fn agent_send(
             let Some(chunk) = crate::chat::chunk_from_event(event) else {
                 continue;
             };
+            if let ReplyChunk::TextDelta { text } = &chunk {
+                streamed_text.push_str(text);
+            }
             if matches!(chunk, ReplyChunk::Final { .. } | ReplyChunk::Error { .. }) {
                 terminal_visible = true;
             }
@@ -2455,13 +2459,16 @@ pub async fn agent_send(
             let _ = bridge.send_output_settled(&sid, &mut settler, chunk);
         }
         if !terminal_visible {
-            let _ = bridge.send_output_settled(
-                &sid,
-                &mut settler,
+            let chunk = if streamed_text.trim().is_empty() {
                 ReplyChunk::Error {
                     message: "Le modèle n'a renvoyé aucune réponse.".to_owned(),
-                },
-            );
+                }
+            } else {
+                ReplyChunk::Final {
+                    content: streamed_text,
+                }
+            };
+            let _ = bridge.send_output_settled(&sid, &mut settler, chunk);
         }
         bridge.detach_if(&sid, gen);
     });