chore(config): Refactor Emacs config for cross-platform compatibility

Add Android/Termux support with `*is-android*` constant and
conditional GUI/terminal initialization. Remove maximized frame
defaults and custom.el. Replace corfu with corfu-terminal in
TTY. Add god-mode to terminal config with line number sync. Update
org agenda to use org-ql blocks with super-agenda grouping. Switch
solarized-theme to fork. Clean up redundant functions and unify
keyboard bindings across environments.

lisp/init-prog.el

@@ -25,13 +25,6 @@
   (global-treesit-auto-mode)
   (setq treesit-font-lock-level 4))
 
-;; lua
-(use-package lua-ts-mode
-  :mode
-  ("\\.lua\\'" . lua-ts-mode)
-  :config
-  (add-to-list 'auto-mode-alist '("\\.lua\\'" . lua-ts-mode)))
-
 ;; scheme
 (use-package geiser
   :config