feat: Make TVA and payment method values editable, remove RON currency

- Make payment methods (CARD/NUMERAR) editable InputNumber fields
- Remove RON currency display from TOTAL, TVA, and payment fields
- Allow editing REJECTED receipts (to fix OCR errors before resubmit)
- Add "Editeaza" button for REJECTED receipts in view mode
- Fix null amount validation by converting to 0 before API call

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

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

data-entry-app/backend/app/db/crud/receipt.py

@@ -254,11 +254,11 @@ class ReceiptCRUD:
     @staticmethod
     async def can_edit(receipt: Receipt, username: str) -> bool:
         """Check if user can edit receipt."""
-        # Only DRAFT receipts can be edited
-        if receipt.status != ReceiptStatus.DRAFT:
+        # DRAFT and REJECTED receipts can be edited (to fix and resubmit)
+        if receipt.status not in [ReceiptStatus.DRAFT, ReceiptStatus.REJECTED]:
             return False
 
-        # Only creator can edit their own drafts
+        # Only creator can edit their own receipts
         return receipt.created_by == username
 
     @staticmethod

data-entry-app/frontend/src/views/receipts/ReceiptCreateView.vue

@@ -351,9 +351,6 @@
                   <label>TOTAL *</label>
                   <InputNumber
                     v-model="form.amount"
-                    mode="currency"
-                    currency="RON"
-                    locale="ro-RO"
                     :minFractionDigits="2"
                     :maxFractionDigits="2"
                     required
@@ -374,10 +371,18 @@
                     class="dropdown-payment"
                   />
                 </div>
-                <!-- Payment methods from OCR (CARD, NUMERAR) with uniform layout -->
-                <div class="value-item payment-method-item" v-for="pm in form.payment_methods" :key="pm.method">
+                <!-- Payment methods from OCR (CARD, NUMERAR) - editable -->
+                <div class="value-item payment-method-item" v-for="(pm, idx) in form.payment_methods" :key="pm.method">
                   <label>{{ pm.method }}</label>
-                  <span class="payment-method-value">{{ formatCurrency(pm.amount) }}</span>
+                  <InputNumber
+                    v-model="form.payment_methods[idx].amount"
+                    locale="en-US"
+                    :minFractionDigits="2"
+                    :maxFractionDigits="2"
+                    :disabled="isReadOnly"
+                    :inputStyle="{ width: '110px' }"
+                    class="input-payment-method"
+                  />
                 </div>
               </div>
 
@@ -387,10 +392,8 @@
                   <label>TVA {{ entry.code }} {{ entry.percent }}%</label>
                   <InputNumber
                     v-model="form.tva_breakdown[idx].amount"
-                    mode="currency"
-                    currency="RON"
-                    locale="ro-RO"
                     :minFractionDigits="2"
+                    :maxFractionDigits="2"
                     :disabled="isReadOnly"
                     :inputStyle="{ width: '110px' }"
                     class="input-tva"
@@ -532,7 +535,7 @@
       <!-- View mode buttons -->
       <template v-if="isViewMode">
         <Button
-          v-if="receipt?.status === 'draft'"
+          v-if="receipt?.status === 'draft' || receipt?.status === 'rejected'"
           icon="pi pi-pencil"
           label="Editeaza"
           @click="$router.push(`/receipt/${receipt.id}/edit`)"
@@ -1719,9 +1722,22 @@ const saveReceipt = async () => {
   saving.value = true
 
   try {
+    // Clean up payment_methods and tva_breakdown - convert null amounts to 0
+    const cleanedPaymentMethods = form.value.payment_methods?.map(pm => ({
+      ...pm,
+      amount: pm.amount ?? 0
+    })) || null
+
+    const cleanedTvaBreakdown = form.value.tva_breakdown?.map(entry => ({
+      ...entry,
+      amount: entry.amount ?? 0
+    })) || null
+
     const data = {
       ...form.value,
       receipt_date: form.value.receipt_date.toISOString().split('T')[0],
+      payment_methods: cleanedPaymentMethods,
+      tva_breakdown: cleanedTvaBreakdown,
     }
 
     let savedReceipt