Refactor codebase for consistency and readability

- Standardize array and vector formatting for clarity.
- Adjust spacing and indentation in examples and TUI code.
- Ensure proper newline usage across files (e.g., LICENSE, TOML files, etc.).
- Simplify `.to_string()` and `.ok()` calls for brevity.

crates/owlen-tui/src/chat_app.rs

@@ -1171,14 +1171,8 @@ impl ChatApp {
                                 let description =
                                     if self.controller.config().storage.generate_descriptions {
                                         self.status = "Generating description...".to_string();
-                                        match self
-                                            .controller
-                                            .generate_conversation_description()
-                                            .await
-                                        {
-                                            Ok(desc) => Some(desc),
-                                            Err(_) => None,
-                                        }
+                                        (self.controller.generate_conversation_description().await)
+                                            .ok()
                                     } else {
                                         None
                                     };
@@ -1780,7 +1774,7 @@ impl ChatApp {
                 stream,
             }) => {
                 // Step 3: Model loaded, now generating response
-                self.status = format!("Model loaded. Generating response... (streaming)");
+                self.status = "Model loaded. Generating response... (streaming)".to_string();
 
                 self.spawn_stream(response_id, stream);
                 match self.controller.mark_stream_placeholder(response_id, "▌") {