@nwidart did you mean to leave it in my repo? Actually I tried to do it and nothing. I removed the module from the composer.json, chenged the vue.js files, ran npm run watch in the two directories and nothing. So, I did everything like you wrote here and nothing:
console "npm install" at the root of the project
console cd to Themes/Adminlte and "npm install"
create your db migration (I added a field to the page module) and migrate
in the partials for the Page module add your field to edit and create blades
in Modules->Page->Assets->js->components edit the 3 .vue files to add the new field
console cd to root of project "php artisan asgard:module:publish Page"
console cd to Themes/Adminlte and "npm run watch"
console cd to root of project "npm run watch"
house keeping "php artisan cache:clear" and "php artisan view:clear"
What did I do wrong? Can you post here a very simple example how to add a custom field into the asgard cms?