refactor: Reorganize config with use-package and optimize startup hooks

- Split monolithic init-package.el into focused modules
- Convert eager `:init` blocks to lazy `:hook`
- Consolidate UI settings and defer theme loading.
- Remove duplicated config between GUI and terminal paths.

lisp/init-elpa.el

@@ -38,32 +38,8 @@
       straight-use-package-version t
       straight-use-package-by-default t)
 
-;; delight
-(use-package delight
-  :init
-  (delight `((eldoc-mode nil eldoc)
-	     (org-indent-mode nil org-indent)
-	     (desktop-environment-mode nil desktop-environment)
-	     (hs-minor-mode nil hideshow)
-	     (rainbow-delimiters-mode ,(propertize " Rdelimiters" 'face 'rainbow-delimiters-depth-1-face) rainbow-delimiters))))
-
-;; gcmh，管理垃圾回收
-(use-package gcmh
-  :delight
-  :demand t
-  :init
-  (setq gcmh-idle-delay 'auto
-	gcmh-auto-idle-delay-factor 10
-        gcmh-high-cons-threshold #x4000000)
-  :config
-  (gcmh-mode 1))
-
-;; benchmark-init
-(use-package benchmark-init
-  :init
-  (benchmark-init/activate)
-  :hook
-  (after-init . benchmark-init/deactivate))
+;; 在imenu显示use-package
+(setopt use-package-enable-imenu-support t)
 
 (provide 'init-elpa)