feat(config): Switch to dark theme and enable

org-habit

- Change theme from modus-operandi to modus-vivendi-tritanopia
- Enable org-habit module for habit tracking
- Reformat org package recipe for better readability

config.el

@@ -16,7 +16,7 @@
    (add-to-list 'default-frame-alist '(width . 100))))
 
 (setq catppuccin-flavor 'catppuccin)
-(setq doom-theme 'modus-operandi)
+(setq doom-theme 'modus-vivendi-tritanopia)
 (setq display-line-numbers-type 'relative)
 (setq org-directory "~/org/")
 
@@ -157,4 +157,4 @@
                     #'my/org-latex-preview-uncenter)))
   )
 
-;; (add-to-list 'org-modules 'org-habit)
+(add-to-list 'org-modules 'org-habit)