refactor: modularize ai and development configurations

development/misc.el

@@ -0,0 +1,27 @@
+;;; development/misc.el -*- lexical-binding: t; -*-
+
+(use-package! bnf-mode
+  :mode "\\.bnf\\'"
+  :config
+  ;; Optional: Add any custom configuration here
+  (setq bnf-mode-hook
+        (lambda ()
+          ;; Enable line numbers
+          (display-line-numbers-mode)
+          ;; Enable auto-pairing of angle brackets
+          (modify-syntax-entry ?< "(>" bnf-mode-syntax-table)
+          (modify-syntax-entry ?> ")<" bnf-mode-syntax-table))))
+
+(use-package! ebnf-mode
+  :mode "\\.ebnf\\'"
+  :config
+  ;; Optional customizations:
+  (setq ebnf-mode-indent-offset 4)        ; Default is 8 spaces
+  (setq ebnf-mode-indent-by-production t) ; Align with the '=' in productions
+  (setq ebnf-mode-comment-char ?\;)       ; Use ; for comments
+  (setq ebnf-mode-eop-char ?\.))         ; Use . for end of production
+
+;; Justfile mode (psibi/justl.el)
+(use-package! justl
+  :config
+  (map! :n "e" 'justl-exec-recipe))