Add encrypted Etsy app credential settings

database/factories/EtsyAppCredentialFactory.php

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+<?php
+
+namespace Database\Factories;
+
+use App\Models\EtsyAppCredential;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends Factory<EtsyAppCredential>
+ */
+class EtsyAppCredentialFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition(): array
+    {
+        return [
+            'keystring' => fake()->bothify('etsy-key-????????'),
+            'shared_secret' => fake()->sha256(),
+        ];
+    }
+}

database/migrations/2026_10_10_180546_create_etsy_app_credentials_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('etsy_app_credentials', function (Blueprint $table) {
+            $table->id();
+            $table->text('keystring');
+            $table->text('shared_secret');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('etsy_app_credentials');
+    }
+};

database/seeders/EtsyAppCredentialSeeder.php

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+<?php
+
+namespace Database\Seeders;
+
+use App\Models\EtsyAppCredential;
+use Illuminate\Database\Seeder;
+
+class EtsyAppCredentialSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {
+        $keystring = config('services.etsy.keystring');
+        $sharedSecret = config('services.etsy.shared_secret');
+
+        if (filled($keystring) && filled($sharedSecret)) {
+            if (EtsyAppCredential::find(1) === null) {
+                $credentials = new EtsyAppCredential;
+                $credentials->id = 1;
+                $credentials->keystring = $keystring;
+                $credentials->shared_secret = $sharedSecret;
+                $credentials->save();
+            }
+        }
+    }
+}