fixed folding -- again

term/.config/nvim/lua/basic-settings.lua

@@ -10,20 +10,45 @@
     - vim.go.* for global option shorthand
 ]]
 
+-- ============================================================================
+-- TREESITTER (Built-in Neovim 0.10+ features)
+-- ============================================================================
+-- Enable Treesitter syntax highlighting (native in Neovim 0.10+)
+-- This replaces the old nvim-treesitter highlight module
+vim.api.nvim_create_autocmd("FileType", {
+	pattern = "*",
+	callback = function()
+		if vim.bo.buftype == "" and vim.bo.filetype ~= "" then
+			pcall(vim.treesitter.start)
+		end
+	end,
+	desc = "Enable Treesitter highlighting",
+})
+
 -- ============================================================================
 -- FOLDING SETTINGS (Code folding)
 -- ============================================================================
--- Foldmethod determines how code blocks are detected and folded
--- "expr" means folds are based on expressions (we use treesitter for this)
-vim.opt.foldmethod = "expr"
-
--- Foldexpr is the expression used to determine fold level
--- v:lua.vim.treesitter.foldexpr() uses Treesitter to calculate folds
-vim.opt.foldexpr = "v:lua.vim.treesitter.foldexpr()"
+-- NOTE: In Neovim 0.10+, Treesitter folding must be set per-buffer via FileType autocmd
+-- Setting it globally causes the foldexpr to evaluate before Treesitter attaches
 
 -- Foldlevel: Higher number = more folds are open by default
--- 99 means almost all folds are open when opening a file
-vim.opt.foldlevel = 99
+-- 1-2 means you'll see folds by default; 99 means all folds are open
+vim.opt.foldlevel = 1
+vim.opt.foldlevelstart = 1
+
+-- Setup Treesitter folding for each buffer after filetype is detected
+-- This ensures the parser is loaded before foldexpr evaluates
+vim.api.nvim_create_autocmd("FileType", {
+	pattern = "*",
+	callback = function()
+		-- Only set folding for file buffers with Treesitter support
+		if vim.bo.buftype == "" then
+			vim.wo.foldmethod = "expr"
+			vim.wo.foldexpr = "v:lua.vim.treesitter.foldexpr()"
+		end
+	end,
+	desc = "Setup Treesitter folding per filetype",
+})
 
 -- ============================================================================
 -- LINE NUMBERS