fix(machine): clarify cash-in QR screen is for receiving, not paying

The displayingQR state showed "Waiting for payment..." with an hourglass,
which confused users into thinking they needed to pay. This is an
LNURL-withdraw flow — the user scans to *receive* sats.

- "Preparing payment code" → "Preparing your withdraw code"
- Add prominent "Scan to receive your sats" heading above QR
- "Waiting for payment..." → "Open your wallet and scan to claim"
- "Manual payment options" → "Manual withdraw options"
- "Payment Sent!" → "Sats Sent!"

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/machine/src/views/CashInView.vue

@@ -309,7 +309,7 @@ const isProcessing = computed(() => atmStore.isPayingInvoice || atmStore.isReque
         >
           <CardContent class="flex flex-col items-center gap-4 p-8">
             <span class="animate-hourglass text-5xl">⏳</span>
-            <p class="text-muted-foreground">Preparing payment code...</p>
+            <p class="text-muted-foreground">Preparing your withdraw code...</p>
           </CardContent>
         </Card>
 
@@ -321,7 +321,7 @@ const isProcessing = computed(() => atmStore.isPayingInvoice || atmStore.isReque
           <CardContent class="pt-6 space-y-5">
             <!-- Amount Display -->
             <div class="text-center">
-              <p class="text-sm text-muted-foreground">Withdraw</p>
+              <p class="text-lg font-semibold text-success">Scan to receive your sats</p>
               <p class="text-3xl font-bold text-bitcoin">
                 {{ formatSats(context?.satsAmount || 0) }} sats
               </p>
@@ -391,10 +391,10 @@ const isProcessing = computed(() => atmStore.isPayingInvoice || atmStore.isReque
               </div>
             </div>
 
-            <!-- Waiting for payment indicator -->
+            <!-- Waiting for withdraw indicator -->
             <div v-if="currentQrValue" class="flex items-center justify-center gap-2">
-              <span class="animate-hourglass text-lg">⏳</span>
-              <p class="text-sm text-muted-foreground">Waiting for payment...</p>
+              <span class="animate-pulse text-lg">📲</span>
+              <p class="text-sm text-muted-foreground">Open your wallet and scan to claim</p>
             </div>
 
             <!-- Mode label + truncated URI (web-ui only) -->
@@ -422,7 +422,7 @@ const isProcessing = computed(() => atmStore.isPayingInvoice || atmStore.isReque
             <!-- Alternative: Manual Options (web-ui only, no keyboard on kiosk) -->
             <details v-if="!isElectron" class="rounded-lg bg-card p-3">
               <summary class="cursor-pointer text-sm text-muted-foreground">
-                Alternative: Manual payment options
+                Alternative: Manual withdraw options
               </summary>
               <div class="mt-4 space-y-4">
                 <!-- CLINK Debit by pubkey -->
@@ -491,7 +491,7 @@ const isProcessing = computed(() => atmStore.isPayingInvoice || atmStore.isReque
         <Card v-else-if="nestedState === 'askForReceipt'" class="w-full max-w-80 border-0 bg-card">
           <CardContent class="flex flex-col items-center gap-4 p-8">
             <div class="text-6xl text-success">✅</div>
-            <CardTitle>Payment Sent!</CardTitle>
+            <CardTitle>Sats Sent!</CardTitle>
             <p class="text-muted-foreground">Would you like a receipt?</p>
             <div class="flex h-32 w-32 items-center justify-center rounded-lg bg-qr">
               <p class="text-qr-foreground">📱 Scan npub</p>