feat(i3): assign 'chatgpt' to $ws0

dot_config/i3/config.tmpl

@@ -380,7 +380,10 @@ assign [class="(Navigator|zen)"] $ws_browser
 # NOTE: Other browsers are treated as supporting tools—
 #       not assigned to $ws_browser for convenience,
 #       so they open in the current workspace.
+
+# Web Apps
 assign [instance="track.toggl.com__timer"] $ws_util
+assign [instance="chatgpt.com" class="Chromium"] $ws0
 
 # Terminal
 assign [title="Alacritty@tmux:default"] $ws_console