wenn checkout.completed kommt, senden wir jetzt transaction_id +

checkout_id direkt an das Backend, damit der Server die Session via Paddle‑API finalisiert (auch wenn der Webhook
  nicht greift). Dadurch sollte “Zahlung wird verarbeitet” nicht mehr hängen bleiben.

tests/Feature/Checkout/CheckoutSessionStatusTest.php

@@ -127,4 +127,65 @@ class CheckoutSessionStatusTest extends TestCase
             'package_id' => $package->id,
         ]);
     }
+
+    public function test_session_confirm_recovers_completed_paddle_transaction(): void
+    {
+        $tenant = Tenant::factory()->create();
+        $user = User::factory()->for($tenant)->create([
+            'pending_purchase' => true,
+        ]);
+        $package = Package::factory()->create([
+            'type' => 'endcustomer',
+            'price' => 79,
+        ]);
+
+        /** @var CheckoutSessionService $sessions */
+        $sessions = app(CheckoutSessionService::class);
+        $session = $sessions->createOrResume($user, $package, [
+            'tenant' => $tenant,
+        ]);
+        $sessions->selectProvider($session, CheckoutSession::PROVIDER_PADDLE);
+
+        config()->set([
+            'paddle.api_key' => 'test-key',
+            'paddle.base_url' => 'https://paddle.test',
+            'paddle.environment' => 'sandbox',
+        ]);
+
+        Http::fake([
+            'https://paddle.test/transactions/txn_987' => Http::response([
+                'data' => [
+                    'id' => 'txn_987',
+                    'status' => 'completed',
+                    'details' => [
+                        'totals' => [
+                            'currency_code' => 'EUR',
+                            'total' => ['amount' => 7900],
+                        ],
+                    ],
+                    'custom_data' => [
+                        'checkout_session_id' => $session->id,
+                    ],
+                ],
+            ], 200),
+        ]);
+
+        Mail::fake();
+        Notification::fake();
+
+        $this->actingAs($user);
+
+        $response = $this->postJson(route('checkout.session.confirm', $session), [
+            'transaction_id' => 'txn_987',
+            'checkout_id' => 'che_987',
+        ]);
+
+        $response->assertOk()
+            ->assertJsonPath('status', CheckoutSession::STATUS_COMPLETED);
+
+        $this->assertDatabaseHas('checkout_sessions', [
+            'id' => $session->id,
+            'status' => CheckoutSession::STATUS_COMPLETED,
+        ]);
+    }
 }