Enhance loading feedback: add loading animation for Assistant replies, improve TUI message updates, and refine response handling logic. Update README to reflect roadmap progress.

crates/owlen-core/src/session.rs

@@ -144,6 +144,17 @@ impl SessionController {
 
         self.conversation.push_user_message(content);
 
+        self.send_request_with_current_conversation(parameters).await
+    }
+
+    /// Send a request using the current conversation without adding a new user message
+    pub async fn send_request_with_current_conversation(
+        &mut self,
+        mut parameters: ChatParameters,
+    ) -> Result<SessionOutcome> {
+        let streaming = parameters.stream || self.config.general.enable_streaming;
+        parameters.stream = streaming;
+
         let request = ChatRequest {
             model: self.conversation.active().model.clone(),
             messages: self.conversation.active().messages.clone(),