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.

init.el

@@ -13,9 +13,10 @@
 (when (file-exists-p custom-file)
   (load-file custom-file))
 
-(if (display-graphic-p)
+(require 'init-const)
+
+(if (or (display-graphic-p) *is-android*)
     (progn
-      (require 'init-const)
       (load "init-proxy" t)
       (require 'init-startup)
       (require 'init-elpa)