Payment Phase R: PAYONE-Integration entflechten (R1–R7 + Review)

Strangler-Refactoring der PAYONE-Zahlungslogik in eine testbare
Service-Schicht, ohne Verhalten in Checkout/Cron/IPN zu ändern.

Neue Services (app/Services/Payment/Payone):
- PayonePaymentService (+ PayonePaymentResult-DTO) für CC-/SEPA-Check
  und Abo-Abbuchung
- PayoneRequestBuilder, PaymentMethodResolver, PayoneMethodConfig
- PayoneTransactionRecorder: zentrale PaymentTransaction-Erstellung
  (API-Response, Invoice, Webhook) inkl. PCI-Redaction (cardpan/cardcvc2)
- PayoneWebhookHandler (+ PayoneWebhookResult): IPN/TSOK-Logik aus
  Api\PayoneController; response('TSOK') statt echo/exit
- PayoneTransportException + Handler-Mapping (403) statt abort() im Service

Hotfixes (R1): var_dump/exit & bare exit() entfernt, Log-Redaction.

Security (R-Review):
- PAYONE_KEY_HASH (MD5-Hash, kein Klartext) mit Boot-Hard-Fail; schließt
  zugleich die ''-Webhook-Bypass-Lücke. Artisan-Command payone:hash-key
  (verdeckte Eingabe, optional --write) zur Hash-Erzeugung.
- Webhook: txaction Pflichtfeld, mode-Fallback auf payment->mode.

Pay\PayoneController ist @deprecated-Fassade (614 → 328 Zeilen),
delegiert an Services via Container-Singleton.

Migration: fehlende Spalte shopping_payments.carddata nachgezogen.

Tests: 47 grün (PayonePaymentService, Recorder, Webhook, Resolver,
TransportException, hash-key). End-to-End im Test-System verifiziert
(siehe dev/2026-06-09-payments).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/Services/Payment/Payone/PayoneTransactionRecorder.php

@@ -0,0 +1,101 @@
+<?php
+
+namespace App\Services\Payment\Payone;
+
+use App\Models\PaymentTransaction;
+use App\Models\ShoppingPayment;
+use App\Services\Util;
+
+class PayoneTransactionRecorder
+{
+    /**
+     * PCI-sensitive keys that must never be persisted in transmitted_data.
+     *
+     * @var list<string>
+     */
+    private const REDACTED_KEYS = ['cardpan', 'cardcvc2'];
+
+    /**
+     * Records a PaymentTransaction from a PAYONE API response (ERROR, REDIRECT, APPROVED, …).
+     *
+     * @param  array<string, mixed>  $response
+     */
+    public static function recordFromResponse(
+        ShoppingPayment $payment,
+        string $requestType,
+        array $response,
+        int $useridFallback = 0,
+    ): PaymentTransaction {
+        return PaymentTransaction::create([
+            'shopping_payment_id' => $payment->id,
+            'request' => $requestType,
+            'txid' => $response['txid'] ?? 0,
+            'userid' => $response['userid'] ?? $useridFallback,
+            'status' => $response['status'] ?? 'UNKNOWN',
+            'txaction' => $response['txaction'] ?? null,
+            'transmitted_data' => self::redactPayload($response),
+            'errorcode' => $response['errorcode'] ?? null,
+            'errormessage' => $response['errormessage'] ?? null,
+            'customermessage' => $response['customermessage'] ?? null,
+            'mode' => $payment->mode,
+        ]);
+    }
+
+    /**
+     * Records a synthetic transaction for FNC/MIV invoice payments (no PAYONE API call made).
+     *
+     * @param  array<string, mixed>  $requestPayload
+     */
+    public static function recordInvoicePayment(
+        ShoppingPayment $payment,
+        string $requestType,
+        array $requestPayload,
+    ): PaymentTransaction {
+        return PaymentTransaction::create([
+            'shopping_payment_id' => $payment->id,
+            'request' => $requestType,
+            'txid' => 0,
+            'userid' => 0,
+            'status' => 'FNCMIV',
+            'transmitted_data' => self::redactPayload($requestPayload),
+            'txaction' => 'invoice_open',
+            'mode' => $payment->mode,
+        ]);
+    }
+
+    /**
+     * Records a transaction for an incoming PAYONE IPN/TSOK webhook callback.
+     *
+     * @param  array<string, mixed>  $data  Raw callback payload (\Request::all()).
+     */
+    public static function recordWebhookCallback(
+        ShoppingPayment $payment,
+        array $data,
+    ): PaymentTransaction {
+        return PaymentTransaction::create([
+            'shopping_payment_id' => $payment->id,
+            'request' => 'transaction',
+            'txid' => $data['txid'] ?? 0,
+            'userid' => $data['userid'] ?? 0,
+            'status' => 'PAYONE',
+            'key' => $data['key'] ?? null,
+            'txaction' => $data['txaction'] ?? null,
+            'transmitted_data' => self::redactPayload(Util::utf8ize($data)),
+            'mode' => $data['mode'] ?? $payment->mode,
+            'errorcode' => $data['errorcode'] ?? null,
+            'errormessage' => $data['errormessage'] ?? null,
+            'customermessage' => $data['customermessage'] ?? null,
+        ]);
+    }
+
+    /**
+     * Strips PCI-sensitive fields before persisting a payload.
+     *
+     * @param  array<string, mixed>  $payload
+     * @return array<string, mixed>
+     */
+    private static function redactPayload(array $payload): array
+    {
+        return array_diff_key($payload, array_flip(self::REDACTED_KEYS));
+    }
+}