Refactor: Rename create-pakasir-payment to create-payment

- Rename function to abstract payment provider details
- Add support for both QRIS and PayPal methods
- Update frontend to use generic create-payment function
- Remove provider-specific naming from UI/UX
- Payment provider (Pakasir) is now an implementation detail

Response format:
- QRIS: returns qr_string for in-app display, payment_url as fallback
- PayPal: returns payment_url for redirect

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/pages/ConsultingBooking.tsx

@@ -226,12 +226,13 @@ export default function ConsultingBooking() {
       const { error: slotsError } = await supabase.from('consulting_slots').insert(slotsToInsert);
       if (slotsError) throw slotsError;
 
-      // Call edge function to create Pakasir payment (avoids CORS)
-      const { data: paymentData, error: paymentError } = await supabase.functions.invoke('create-pakasir-payment', {
+      // Call edge function to create payment (avoids CORS)
+      const { data: paymentData, error: paymentError } = await supabase.functions.invoke('create-payment', {
         body: {
           order_id: order.id,
           amount: totalPrice,
           description: `Konsultasi 1-on-1 (${totalBlocks} blok)`,
+          method: 'qris',
         },
       });
 
@@ -241,7 +242,7 @@ export default function ConsultingBooking() {
       }
 
       if (paymentData?.success && paymentData?.data?.payment_url) {
-        // Redirect to Pakasir payment page
+        // Redirect to payment page
         window.location.href = paymentData.data.payment_url;
       } else {
         throw new Error('Gagal membuat URL pembayaran');