fixes before build 3

lib/review_screen.dart

@@ -1,6 +1,8 @@
 /// Editable list of parsed receipt lines before they are saved as a shop trip.
 library;
 
+import 'dart:io';
+
 import 'package:flutter/material.dart';
 
 import 'models/line_item.dart';
@@ -113,6 +115,24 @@ class _ReviewScreenState extends State<ReviewScreen> {
     setState(() => _shoppedAt = picked);
   }
 
+  Future<void> _openReceipt() async {
+    final path = widget.imagePath;
+    if (path == null || path.isEmpty) return;
+    final file = File(path);
+    if (!file.existsSync()) return;
+    await showDialog<void>(
+      context: context,
+      builder: (context) {
+        return Dialog(
+          insetPadding: const EdgeInsets.all(16),
+          child: InteractiveViewer(
+            child: Image.file(file, fit: BoxFit.contain),
+          ),
+        );
+      },
+    );
+  }
+
   Future<void> _confirm() async {
     final supermarket = _resolvedSupermarket;
     if (supermarket == null) {
@@ -160,6 +180,10 @@ class _ReviewScreenState extends State<ReviewScreen> {
     if (_supermarket != null && !names.contains(_supermarket)) {
       names.add(_supermarket!);
     }
+    final receiptPath = widget.imagePath;
+    final hasReceipt = receiptPath != null &&
+        receiptPath.isNotEmpty &&
+        File(receiptPath).existsSync();
 
     return Scaffold(
       appBar: AppBar(
@@ -313,6 +337,27 @@ class _ReviewScreenState extends State<ReviewScreen> {
               ],
             ),
           ),
+          if (hasReceipt)
+            ExpansionTile(
+              title: const Text('See receipt'),
+              children: [
+                Padding(
+                  padding: const EdgeInsets.fromLTRB(16, 0, 16, 16),
+                  child: GestureDetector(
+                    onTap: _openReceipt,
+                    child: ClipRRect(
+                      borderRadius: BorderRadius.circular(12),
+                      child: Image.file(
+                        File(receiptPath),
+                        fit: BoxFit.contain,
+                        height: 220,
+                        width: double.infinity,
+                      ),
+                    ),
+                  ),
+                ),
+              ],
+            ),
           if (widget.rawText.isNotEmpty)
             ExpansionTile(
               title: const Text('Raw OCR text'),