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.

early-init.el

@@ -15,11 +15,6 @@
 (setq display-line-numbers-grow-only t)	  ; 行号栏只增不减
 (setq display-line-numbers-width-start 4) ; 预设4位宽度
 
-;; 启动时初始窗口最大化
-(add-to-list 'initial-frame-alist '(fullscreen . maximized))
-;; 之后新建的窗口也默认最大化
-(add-to-list 'default-frame-alist '(fullscreen . maximized))
-
 (setq frame-background-mode 'dark)
 
 (setq package-enable-at-startup nil)