Implemented folding and some improvements. Moved functions to the utils module

lua/config/options.lua

@@ -16,3 +16,13 @@ vim.g.loaded_netrw = 1
 vim.g.loaded_netrwPlugin = 1
 
 vim.opt.signcolumn = "yes"
+
+-- Enable Treesitter-based folding
+vim.opt.foldmethod = "expr"
+vim.opt.foldexpr = "nvim_treesitter#foldexpr()"
+vim.opt.foldlevelstart = 99 -- open all folds by default
+vim.opt.fillchars = "fold:╌"
+
+-- 3. Persist folds using mkview/loadview
+
+