fix(terminal): add console/mosh compatibility

- Create terminal-compat.el for arrow key escape sequences
- Fix M-uppercase keybindings (M-O → M-S-o, etc.) that conflicted
  with terminal escape sequences ESC O A/B/C/D
- Add GUI-only guards for emojify and icon rendering
- 18 keybindings updated across 13 modules with override comments

1 files changed, 54 insertions, 0 deletions

diff --git a/modules/terminal-compat.el b/modules/terminal-compat.el
new file mode 100644
index 00000000..f959646d
--- /dev/null
+++ b/modules/terminal-compat.el
@@ -0,0 +1,54 @@
+;;; terminal-compat.el --- Terminal compatibility fixes -*- lexical-binding: t; coding: utf-8; -*-
+;; author: Craig Jennings <c@cjennings.net>
+
+;;; Commentary:
+
+;; Fixes for running Emacs in terminal/console mode, especially over mosh.
+;; - Arrow key escape sequence handling
+;; - Disable graphical icons that show as unicode artifacts
+
+;;; Code:
+
+(require 'host-environment)
+
+(defun cj/terminal-compat-setup ()
+  "Set up terminal compatibility after init completes."
+  (when (env-terminal-p)
+    ;; Fix arrow key escape sequences for various terminal types
+    (define-key input-decode-map "\e[A" [up])
+    (define-key input-decode-map "\e[B" [down])
+    (define-key input-decode-map "\e[C" [right])
+    (define-key input-decode-map "\e[D" [left])
+
+    ;; Application mode arrows (sent by some terminals)
+    (define-key input-decode-map "\eOA" [up])
+    (define-key input-decode-map "\eOB" [down])
+    (define-key input-decode-map "\eOC" [right])
+    (define-key input-decode-map "\eOD" [left])))
+
+;; Run after init completes to override any package settings
+(add-hook 'emacs-startup-hook #'cj/terminal-compat-setup)
+
+;; Icon disabling only in terminal mode
+(when (env-terminal-p)
+  ;; Disable nerd-icons display (shows as \uXXXX artifacts)
+  (with-eval-after-load 'nerd-icons
+    (defun nerd-icons-icon-for-file (&rest _) "")
+    (defun nerd-icons-icon-for-dir (&rest _) "")
+    (defun nerd-icons-icon-for-mode (&rest _) "")
+    (defun nerd-icons-icon-for-buffer (&rest _) ""))
+
+  ;; Disable dashboard icons
+  (with-eval-after-load 'dashboard
+    (setq dashboard-display-icons-p nil)
+    (setq dashboard-set-file-icons nil)
+    (setq dashboard-set-heading-icons nil))
+
+  ;; Disable all-the-icons
+  (with-eval-after-load 'all-the-icons
+    (defun all-the-icons-icon-for-file (&rest _) "")
+    (defun all-the-icons-icon-for-dir (&rest _) "")
+    (defun all-the-icons-icon-for-mode (&rest _) "")))
+
+(provide 'terminal-compat)
+;;; terminal-compat.el ends here