Feat: Macht Transaktionen in der Transaktions-Liste prüf- bzw. editierbar

lib/Pages/Trend/transaction_list.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_sticky_header/flutter_sticky_header.dart';
 import 'package:intl/intl.dart';
@@ -115,8 +117,23 @@ class _TransactionListState extends State<TransactionList> {
                             final Transaction transaction = entry.value[index];
 
                             return ListTile(
+                              shape: RoundedRectangleBorder(
+                                borderRadius: BorderRadius.circular(12),
+                              ),
+                              onTap: () {
+                                unawaited(
+                                  _transactionController.editTransactionHandler(
+                                    transaction.id,
+                                  ),
+                                );
+                              },
                               contentPadding: EdgeInsets.zero,
-                              title: Text(transaction.name),
+                              title: Text(
+                                transaction.name,
+                                style: (transaction.checked)
+                                    ? const TextStyle()
+                                    : TextStyle(color: theme.colorScheme.error),
+                              ),
                               subtitle: Text(
                                 '${transaction.date?.day}'
                                 '.${transaction.date?.month}'