fix line wrapping

codex.el

@@ -53,6 +53,11 @@
   :type 'string
   :group 'codex)
 
+(defcustom codex-wrap-lines t
+  "Whether to truncate long lines in `codex-mode`."
+  :type 'boolean
+  :group 'codex)
+
 (defcustom codex-sessions-file (concat (file-name-parent-directory user-init-file) "codex-sessions")
   "What the default name should be fore the codex chat buffer."
   :type 'string
@@ -73,7 +78,7 @@
 (define-derived-mode codex-mode fundamental-mode "Codex"
   "Major mode for chatting with Codex."
   (setq-local buffer-read-only nil)
-  (setq-local truncate-lines t)
+  (setq-local truncate-lines (not codex-wrap-lines))
   (setq-local codex--busy nil))
 
 (defvar-local codex--prompt-start nil)