feat: enrich card transaction descriptions and add duplicate warning

Build full description from operationName, fullRemark, shortRemark, and
description fields for card statement transactions. Show a warning banner
when card transactions are present since duplicate detection across card
and account statements is not possible due to different reference numbers.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

kapital_bank/bank_api.py

@@ -1412,6 +1412,14 @@ def get_card_statement_transactions(from_date, to_date, card_account_number, log
             # Purpose (operationName serves as both purpose and counterparty description)
             operation_name = (txn.get("operationName") or "").strip()
 
+            # Build enriched description from all available remark fields
+            desc_parts = [operation_name] if operation_name else []
+            for field in ("fullRemark", "shortRemark", "description"):
+                val = (txn.get(field) or "").strip()
+                if val and val not in desc_parts:
+                    desc_parts.append(val)
+            full_description = " || ".join(desc_parts)
+
             transactions.append({
                 "ref_no": txn_id,
                 "date": str(parsed_date),
@@ -1421,6 +1429,7 @@ def get_card_statement_transactions(from_date, to_date, card_account_number, log
                 "currency": currency,
                 "drcr": dr_cr,
                 "purpose": operation_name,
+                "full_description": full_description,
                 "source_type": "card",
                 "source_label": f"Card: {pan}",
             })
@@ -2202,7 +2211,7 @@ def _import_one_bank_transaction(txn_data, settings, voen_to_party, name_to_part
     bt.deposit = amount if dr_cr == "C" else 0
     bt.withdrawal = amount if dr_cr == "D" else 0
     bt.currency = currency
-    bt.description = purpose
+    bt.description = txn_data.get("full_description") or purpose
     bt.reference_number = ref_no
     bt.transaction_id = ref_no
     bt.company = settings.default_company

kapital_bank/client/bank_transaction.js

@@ -527,7 +527,16 @@ KBBTImport.import = {
 	},
 
 	showTransactionSelection: function(txns) {
-		let txnTable = '<div style="max-height: 500px; overflow-y: auto;"><table class="table table-bordered kb-bt-txn-table" style="width: 100%; table-layout: fixed;">';
+		const hasCardTxns = txns.some(t => t.source_type === 'card');
+
+		let txnTable = '';
+		if (hasCardTxns) {
+			txnTable += '<div style="margin-bottom: 10px; padding: 10px 12px; background: var(--red-50, #fff5f5); border: 1px solid var(--red-200, #fecaca); border-radius: var(--border-radius); font-size: var(--text-base); color: var(--red-600, #dc2626);">';
+			txnTable += '⚠️ ' + __('Card transactions may already be imported from other accounts. The bank uses different reference numbers for card and account statements, so duplicates cannot be detected automatically.');
+			txnTable += '</div>';
+		}
+
+		txnTable += '<div style="max-height: 500px; overflow-y: auto;"><table class="table table-bordered kb-bt-txn-table" style="width: 100%; table-layout: fixed;">';
 		txnTable += '<thead style="position: sticky; top: 0; z-index: 1; background: var(--bg-color, #fff);"><tr>' +
 					'<th style="width: 4%;"><input type="checkbox" class="kb-bt-select-all-txns"></th>' +
 					'<th style="width: 14%;">' + __('Ref No') + '</th>' +
@@ -555,7 +564,7 @@ KBBTImport.import = {
 						'<td style="word-break: break-word;">' + (txn.counterparty || '') + '</td>' +
 						'<td style="text-align: right;">' + amountFmt + ' ' + (txn.currency || '') + '</td>' +
 						'<td style="text-align: center;">' + drcrLabel + '</td>' +
-						'<td style="word-break: break-word; font-size: 0.9em;">' + (txn.purpose || '') + '</td>' +
+						'<td style="word-break: break-word; font-size: 0.9em;">' + (txn.full_description || txn.purpose || '') + '</td>' +
 						'</tr>';
 		});
 

kapital_bank/client/payment_entry.js

@@ -485,7 +485,16 @@ KBImport.import = {
 	},
 
 	showTransactionSelection: function(txns) {
-		let txnTable = '<div style="max-height: 500px; overflow-y: auto;"><table class="table table-bordered kb-txn-table" style="width: 100%; table-layout: fixed;">';
+		const hasCardTxns = txns.some(t => t.source_type === 'card');
+
+		let txnTable = '';
+		if (hasCardTxns) {
+			txnTable += '<div style="margin-bottom: 10px; padding: 10px 12px; background: var(--red-50, #fff5f5); border: 1px solid var(--red-200, #fecaca); border-radius: var(--border-radius); font-size: var(--text-base); color: var(--red-600, #dc2626);">';
+			txnTable += '⚠️ ' + __('Card transactions may already be imported from other accounts. The bank uses different reference numbers for card and account statements, so duplicates cannot be detected automatically.');
+			txnTable += '</div>';
+		}
+
+		txnTable += '<div style="max-height: 500px; overflow-y: auto;"><table class="table table-bordered kb-txn-table" style="width: 100%; table-layout: fixed;">';
 		txnTable += '<thead style="position: sticky; top: 0; z-index: 1; background: var(--bg-color, #fff);"><tr>' +
 					'<th style="width: 4%;"><input type="checkbox" class="kb-select-all-txns"></th>' +
 					'<th style="width: 14%;">' + __('Ref No') + '</th>' +
@@ -513,7 +522,7 @@ KBImport.import = {
 						'<td style="word-break: break-word;">' + (txn.counterparty || '') + '</td>' +
 						'<td style="text-align: right;">' + amountFmt + ' ' + (txn.currency || '') + '</td>' +
 						'<td style="text-align: center;">' + drcrLabel + '</td>' +
-						'<td style="word-break: break-word; font-size: 0.9em;">' + (txn.purpose || '') + '</td>' +
+						'<td style="word-break: break-word; font-size: 0.9em;">' + (txn.full_description || txn.purpose || '') + '</td>' +
 						'</tr>';
 		});