feat(ui): improve configuration changes modal

app/Casts/EncryptedArrayCast.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Casts;
+
+use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
+use Illuminate\Contracts\Encryption\DecryptException;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Facades\Crypt;
+
+/**
+ * Stores an array as an encrypted JSON string at rest. Tolerates legacy
+ * plaintext JSON rows written before the column was encrypted, so existing
+ * snapshots keep decoding instead of throwing.
+ *
+ * @implements CastsAttributes<array<mixed>|null, array<mixed>|null>
+ */
+class EncryptedArrayCast implements CastsAttributes
+{
+    /**
+     * @param  array<string, mixed>  $attributes
+     * @return array<mixed>|null
+     */
+    public function get(Model $model, string $key, mixed $value, array $attributes): ?array
+    {
+        if ($value === null || $value === '') {
+            return null;
+        }
+
+        try {
+            $value = Crypt::decryptString($value);
+        } catch (DecryptException) {
+            // Legacy plaintext JSON written before this column was encrypted.
+        }
+
+        $decoded = json_decode((string) $value, true);
+
+        return is_array($decoded) ? $decoded : null;
+    }
+
+    /**
+     * @param  array<string, mixed>  $attributes
+     */
+    public function set(Model $model, string $key, mixed $value, array $attributes): ?string
+    {
+        if ($value === null) {
+            return null;
+        }
+
+        return Crypt::encryptString(json_encode($value, JSON_THROW_ON_ERROR));
+    }
+}