Custom address model

Extend the package model and point the config at your subclass:

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use RoundlyConsulting\Addresses\Address as BaseAddress;

class Address extends BaseAddress
{
    protected $table = 'addresses';

    public function scopeInCity(Builder $query, string $city): void
    {
        $query->where('city', $city);
    }
}

// config/addresses.php
'model' => \App\Models\Address::class,

The trait’s relation, the builder, the actions and the facade all resolve the model through config, so your class is created, queried and returned everywhere. It inherits the scopes, casts, the addressable relation, formatted(), the primary-address handling, soft deletes and the AddressDeleted dispatch:

use RoundlyConsulting\Addresses\Facades\Addresses;

$customer->addresses()->inCity('Bratislava')->get();   // your scope, on the package relation
Addresses::for($customer)->primary();                  // returns an App\Models\Address

Rules

• The class must be RoundlyConsulting\Addresses\Address or extend it. Anything else — an Eloquent model that does not extend it, or a value that is not a model class at all — throws the package toolkit’s InvalidConfigurationException naming the key; a foreign class is never silently replaced by the packaged model.
• Set protected $table = 'addresses' — Eloquent derives the table from the class name, so a subclass with any other name would look for a different table.