refactor(config): Clean up and reorganize Emacs configuration

Remove unused packages (EMMS, jinx, god-mode), simplify terminal
setup with ido instead of vertico/orderless, and reorganize
keybindings. Add new packages (debase, discomfort, git-timemachine,
edit-indirect) and improve EXWM, dired, and theme
configurations. Move restart-fcitx5 to kbd-func and update Linux
PATH for Guix.

lisp/init-terminal-kbd.el

@@ -9,31 +9,11 @@
   (interactive)
   (find-file "~/.emacs.d/init.el"))
 
-(defun duplicate-and-move-to-next-line()
-  "Duplicate current line and move to next line."
-  (interactive)
-  (progn
-    (duplicate-line)
-    (next-line)))
-
 ;; scratch buffer
 (if *is-mac*
     (general-def "C-c <f12>" 'scratch-buffer)
   (general-def "C-c <delete>" 'scratch-buffer))
 
-;; god-mode
-(general-def god-local-mode-map
-  "i" 'god-mode-all
-  "<escape>" 'god-mode-all
-  "[" 'backward-paragraph
-  "]" 'forward-paragraph
-  "." 'repeat
-  "y" 'yank
-  "C-c C-<f12>" 'scratch-buffer
-  "z" 'avy-goto-char
-  "'" 'avy-goto-word-1
-  "<f2>" 'open-init-file)
-
 ;; global map with C-c prefix
 (general-def
   :prefix "C-c"
@@ -45,23 +25,18 @@
 ;; global map
 (general-def
 
-  ;; god-mode
-  "<escape>" 'god-mode-all
-  "M-i" 'god-mode-all
-
   ;; buffer, file, and window
   "<f2>" 'open-init-file
   "M-[" 'previous-buffer
   "M-]" 'next-buffer
   "C-x C-b" 'ibuffer-other-window
   "C-x K" 'crux-kill-other-buffers
-  "C-x C-b" 'ibuffer-other-window
 
   ;; edit
   "M-c" 'capitalize-dwim
   "M-u" 'upcase-dwim
   "M-l" 'downcase-dwim
-  "C-," 'duplicate-and-move-to-next-line
+  "C-," 'crux-duplicate-current-line-or-region
   "C-k" 'crux-smart-kill-line
   "C-<backspace>" 'crux-kill-line-backwards
   "C-a" 'crux-move-beginning-of-line
@@ -70,10 +45,12 @@
   "C-c C-DEL" 'hungry-delete-forward
   "M-P" 'drag-stuff-up
   "M-N" 'drag-stuff-down
+  "C-M-@" 'er/mark-symbol
+  "M-@" 'er/mark-word
 
   ;; undo
-  "C-/" 'undo-fu-only-undo
-  "C-?" 'undo-fu-only-redo
+  "C-/" 'undo
+  "C-M-_" 'undo-redo
 
   ;; navigate
   "M-p" 'backward-paragraph