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-kbd-func.el

@@ -38,13 +38,6 @@ Disable jinx-mode if it's enable and global-jinx-mode is disable , otherwise tog
           (message "enable global-jinx-mode")
           (global-jinx-mode 1)))))))
 
-(defun duplicate-and-move-to-next-line()
-  "Duplicate current line and move to next line."
-  (interactive)
-  (progn
-    (duplicate-line)
-    (next-line)))
-
 (defun popper-toggle-type-delete-other-window()
   "Toggle type of popper window and delete other window."
   (interactive)