Add Ghostty keybind for renaming surface title

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: statico

.config/ghostty/config

@@ -25,3 +25,5 @@ shell-integration-features = no-cursor, ssh-env
 unfocused-split-opacity = 1
 
 keybind = shift+enter=text:\x1b\r
+
+keybind = cmd+shift+i=prompt_surface_title