Complete Payment module: initiate/webhook/confirm/refund actions, Filament resources (T5.8-T5.13)

- InitiatePaymentAction + POST /api/v1/payments/{booking}/initiate
- Generic KBZ webhook (POST /api/v1/webhooks/{method}/{encryptBookingId?}),
  signature verification per KBZ's real callback spec, PaymentGatewayInterface::handleWebhook()
- ConfirmPaymentAction: idempotent confirmation, PaymentCompleted/PaymentFailed events,
  MarkBookingPaid listener
- RefundBookingAction + POST /api/v1/bookings/{booking}/refund: partial refunds validated
  against remaining balance, RefundProcessed event, MarkBookingRefunded listener
- CancelBookingAction now refunds confirmed bookings instead of rejecting; BookingPolicy::cancel
  requires process_refunds for confirmed bookings
- PaymentPlugin + PaymentResource/RefundResource Filament admin UI (read-only payments,
  refund list + Process action)
- Booking detail page now shows related payments
- Fix CACHE_STORE mismatch (database -> redis) so tagged route caching works
- CLAUDE.md: never run migrate:fresh/migrate:refresh/db:wipe on dev without being asked

app-modules/booking/tests/Feature/BookingCancelApiTest.php

@@ -3,10 +3,48 @@
 use App\Models\User;
 use Modules\Booking\Enums\BookingStatus;
 use Modules\Booking\Models\Booking;
+use Modules\Payment\Contracts\PaymentGatewayInterface;
+use Modules\Payment\Data\PaymentRequestData;
+use Modules\Payment\Data\PaymentResultData;
+use Modules\Payment\Data\RefundResultData;
+use Modules\Payment\Enums\PaymentMethod;
+use Modules\Payment\Enums\RefundStatus;
+use Modules\Payment\Factories\PaymentGatewayFactory;
+use Modules\Payment\Models\Payment;
 use Spatie\Permission\Models\Permission;
 
+/**
+ * Never calls the real KBZ refund API in tests.
+ */
+class FakeCancelApiRefundGateway implements PaymentGatewayInterface
+{
+    public function initiate(PaymentRequestData $data): PaymentResultData
+    {
+        throw new RuntimeException('not needed for this test');
+    }
+
+    public function verify(string $gatewayTransactionId): PaymentResultData
+    {
+        throw new RuntimeException('not needed for this test');
+    }
+
+    public function refund(string $gatewayTransactionId, string $amount, string $reason): RefundResultData
+    {
+        return new RefundResultData(status: RefundStatus::Completed, gatewayRefundId: 'REFUND123', gatewayPayload: []);
+    }
+
+    public function handleWebhook(array $payload): PaymentResultData
+    {
+        throw new RuntimeException('not needed for this test');
+    }
+}
+
 beforeEach(function () {
-    Permission::findOrCreate('manage_bookings', 'web');
+    foreach (['manage_bookings', 'process_refunds'] as $permission) {
+        Permission::findOrCreate($permission, 'web');
+    }
+
+    app(PaymentGatewayFactory::class)->register(PaymentMethod::KbzMiniApp, FakeCancelApiRefundGateway::class);
 
     $this->owner = User::factory()->create();
     $this->token = $this->owner->createToken('test-token')->plainTextToken;
@@ -23,10 +61,43 @@ test('the owner can cancel their own pending_payment booking', function () {
     expect($booking->refresh()->status)->toBe(BookingStatus::Cancelled);
 });
 
-test('cancelling a confirmed booking surfaces as 422 and leaves it untouched', function () {
+test('the owner cannot cancel their own confirmed booking without process_refunds', function () {
     $booking = Booking::factory()->create(['user_id' => $this->owner->id, 'status' => BookingStatus::Confirmed]);
 
     $this->withHeader('Authorization', "Bearer {$this->token}")
+        ->postJson("/api/v1/bookings/{$booking->booking_ref}/cancel")
+        ->assertForbidden();
+
+    expect($booking->refresh()->status)->toBe(BookingStatus::Confirmed);
+});
+
+test('staff with process_refunds can cancel a confirmed booking, which refunds it in full', function () {
+    $staff = User::factory()->create()->givePermissionTo('process_refunds');
+    $staffToken = $staff->createToken('staff-token')->plainTextToken;
+
+    $booking = Booking::factory()->create(['user_id' => $this->owner->id, 'status' => BookingStatus::Confirmed, 'price' => 15000]);
+    Payment::factory()->completed()->create([
+        'booking_id' => $booking->id,
+        'gateway' => PaymentMethod::KbzMiniApp,
+        'amount' => 15000,
+        'gateway_transaction_id' => 'EVB-CANCEL-API-1',
+    ]);
+
+    $this->withHeader('Authorization', "Bearer {$staffToken}")
+        ->postJson("/api/v1/bookings/{$booking->booking_ref}/cancel")
+        ->assertSuccessful()
+        ->assertJsonPath('data.status', BookingStatus::Cancelled->value);
+
+    expect($booking->refresh()->status)->toBe(BookingStatus::Cancelled);
+});
+
+test('cancelling a confirmed booking with no completed payment surfaces as 422 and leaves it untouched', function () {
+    $staff = User::factory()->create()->givePermissionTo('process_refunds');
+    $staffToken = $staff->createToken('staff-token')->plainTextToken;
+
+    $booking = Booking::factory()->create(['user_id' => $this->owner->id, 'status' => BookingStatus::Confirmed]);
+
+    $this->withHeader('Authorization', "Bearer {$staffToken}")
         ->postJson("/api/v1/bookings/{$booking->booking_ref}/cancel")
         ->assertStatus(422);