fix(cli): print message when opening config in editor

Fixes bounty issue #1212

When running 'cortex config --edit', the command now prints a message
indicating which editor is being used before opening it. This helps
users understand what is happening, especially on Windows where editors
may open in the background.

Author: factorydroid

cortex-cli/src/main.rs

@@ -945,6 +945,8 @@ async fn show_config(config_cli: ConfigCommand) -> Result<()> {
             std::fs::write(&config_path, default_config)?;
         }
 
+        println!("Opening config in {}...", editor);
+
         let status = std::process::Command::new(&editor)
             .arg(&config_path)
             .status()?;