fix?

nvim/lua/util/float.lua

@@ -7,12 +7,13 @@ function M.float_terminal(cmd, opts)
   local height = math.floor(vim.o.lines   * (opts.height_ratio or 0.5))
   local row = math.floor((vim.o.lines - height) / 2)
   local col = math.floor((vim.o.columns - width) / 2)
-  vim.api.nvim_open_win(buf, true, {
+
+  -- FIX: 'buf' should be the first argument, not inside the options table.
+  vim.api.nvim_open_win(buf, true, { 
     style = "minimal", relative = "editor",
     width = width, height = height, row = row, col = col,
     border = opts.border or "rounded",
-    -- Set the buffer for the new window
-    buf = buf,
+    -- The key 'buf' was removed from here.
   })
 
   -- --- START MODIFICATION ---