Refactor codebase: improve formatting consistency, simplify message rendering, and optimize cursor and visual selection handling logic across panels.

crates/owlen-core/src/formatting.rs

@@ -35,7 +35,12 @@ impl MessageFormatter {
     }
 
     pub fn format_message(&self, message: &Message) -> Vec<String> {
-        message.content.trim().lines().map(|s| s.to_string()).collect()
+        message
+            .content
+            .trim()
+            .lines()
+            .map(|s| s.to_string())
+            .collect()
     }
 
     /// Extract thinking content from <think> tags, returning (content_without_think, thinking_content)

crates/owlen-core/src/session.rs

@@ -144,7 +144,8 @@ impl SessionController {
 
         self.conversation.push_user_message(content);
 
-        self.send_request_with_current_conversation(parameters).await
+        self.send_request_with_current_conversation(parameters)
+            .await
     }
 
     /// Send a request using the current conversation without adding a new user message

crates/owlen-core/src/ui.rs

@@ -422,4 +422,4 @@ mod tests {
         assert_eq!(find_prev_word_boundary(line, 11), Some(6));
         assert_eq!(find_prev_word_boundary(line, 6), Some(0));
     }
-}
+}