refactor: simplify order status model — remove DELIVERY_FEE_ADJUSTMENT and PAYMENT_VERIFICATION

- Add deliveryFeeLocked field to Order model
- Remove DELIVERY_FEE_ADJUSTMENT and PAYMENT_VERIFICATION statuses (11→8)
- 3 order paths: delivery+online (locked→unlocked→paid), pickup+online (unlocked→paid), pickup+on_pickup (direct to in_progress)
- Update checkout to use PENDING_PAYMENT + deliveryFeeLocked
- Update payment flow to stay in PENDING_PAYMENT until admin confirms
- Update admin UI to use deliveryFeeLocked instead of status check
- Update client payment UI with new deliveryFeeLocked logic

server/src/routes/user-orders.js

@@ -101,8 +101,13 @@ export async function registerUserOrderRoutes(fastify) {
             })
 
       let initialStatus = 'PENDING_PAYMENT'
-      if (paymentMethod === 'on_pickup') initialStatus = 'IN_PROGRESS'
-      else if (deliveryType === 'delivery') initialStatus = 'DELIVERY_FEE_ADJUSTMENT'
+      let deliveryFeeLocked = true
+      if (paymentMethod === 'on_pickup') {
+        initialStatus = 'IN_PROGRESS'
+      } else if (deliveryType === 'delivery') {
+        initialStatus = 'PENDING_PAYMENT'
+        deliveryFeeLocked = false
+      }
 
       let created
       try {
@@ -124,6 +129,7 @@ export async function registerUserOrderRoutes(fastify) {
             data: {
               userId,
               status: initialStatus,
+              deliveryFeeLocked,
               deliveryType,
               deliveryCarrier,
               paymentMethod,