make treesitter disable on massive files, and diff files

also remove auto installing

after/plugin/ts.lua

@@ -18,13 +18,19 @@ treesitter.setup {
     "git_config",
   },
 
-  auto_install = true,
-
   highlight = {
     enable = true,
     additional_vim_regex_highlighting = false,
+    disable = function(lang, buf)
+      if lang == "diff" then return true end
+      local max_filesize = 1024 * 100 -- 100 KB
+      local ok, stats = pcall(vim.loop.fs_stat, vim.api.nvim_buf_get_name(buf))
+      if ok and stats and stats.size > max_filesize then
+        return true
+      end
+    end
   },
   indent = {
     enable = true
-  },
+  }
 }