You find the login.tpl in the plugin folder of the theme you are using, e.g. /node_modules/nodebb-theme-harmony/templates/login.tpl
After changing a template you have to rebuild & restart your nodebb to see effects.
Why is it that those files:
node_modules/pulling/build/pulling-drawer.js.map
node_modules/jquery-form/dist/jquery.form.min.js.map
are missing from ~/build/public/src/modules/
in my vanilla persona-clone theme and most likely also in persona?
NodeBB v1.17.1
Map files are only for debug and are only loaded when you open the developer tools.