refactor: streamline console format determination logic in main function

src/main.rs

@@ -48,15 +48,15 @@ fn main() -> Result<()> {
     let args = Args::parse();
 
     let mut format = args.format;
-    if matches!(format, Format::Console) {
-        if let Some(output_path) = &args.output {
+    if matches!(format, Format::Console)
+        && let Some(output_path) = &args.output
+    {
         match output_path.extension().and_then(|s| s.to_str()) {
             Some("md") => format = Format::Markdown,
             Some("txt") => format = Format::Text,
             _ => {}
         }
     }
-    }
 
     let config = codebase_to_prompt::Config {
         directory: args.directory,