How exactly does migration configuration work?

[ratrakone]

hi, so i have this code in my config

$package
    ->name('ratracore')
    ->hasConfigFile()
    ->hasViews()
    ->hasMigrations(['create_kvs_table'])
    ->discoversMigrations()
    ->runsMigrations()
    ->hasCommand(TemplateCommand::class);

When I install the package in the app and run php artisan migrate nothing happens.
Then when I run php artisan vendor:publish --tag=ratracore-migrations, the migration gets published and migrate command works.

I thought when I use discoversMigrations() that:

• i wouldnt need to specify the hasMigrations with the names, but i still needed to do it.
• i wouldnt need to publish the migrations with the artisan command, that it would publish automatically with the installation, but it didnt.
  now, do i have something misconfigured, or did i understand this wrong?

my second thought was that with runsMigrations():

• the migrate command would be run automatically on install, but it wasnt and i had to run it manually.
  again, do i understand it incorrectly or do i have some misconfigurations?

thanks.