nushell: show remote host in title

nushell/config.nu

@@ -1,6 +1,17 @@
 # Disable welcome message per https://www.nushell.sh/book/configuration.html#remove-welcome-message
 $env.config.show_banner = false
 
+# Configure window title with SSH hostname prefix
+$env.config.hooks.pre_prompt = [{
+    let title_prefix = if "SSH_CONNECTION" in $env {
+        $"[(sys host | get hostname)] "
+    } else {
+        ""
+    }
+
+    print -n $"(ansi title)($title_prefix)(pwd | str replace $env.HOME "~")(ansi st)"
+}]
+
 # Set theme
 source ($nu.default-config-dir | path join "themes/catppuccin/themes/catppuccin_mocha.nu")