Trigger BufReadPost for loaded buffers on session load

Ensure Treesitter/LSP attach by executing BufReadPost
for all loaded buffers when a session is loaded.

lua/autocmds.lua

@@ -123,7 +123,14 @@ vim.api.nvim_create_autocmd("SessionLoadPost", {
 	group = session_aug,
 	pattern = "*",
 	callback = function()
-		vim.cmd("filetype detect")
+		-- Trigger BufReadPost for all loaded buffers to ensure Treesitter/LSP attach
+		vim.schedule(function()
+			for _, buf in ipairs(vim.api.nvim_list_bufs()) do
+				if vim.api.nvim_buf_is_loaded(buf) and vim.bo[buf].buftype == "" then
+					vim.api.nvim_exec_autocmds("BufReadPost", { buffer = buf })
+				end
+			end
+		end)
 	end,
 })