fix: enhance response parsing in ImportRepository to handle JSON array and improve logging

flutter/lib/features/import/data/import_repository.dart

@@ -71,18 +71,25 @@ class ImportRepository {
       }
       
       final parsed = _parseResponse(response);
-      developer.log('Response parsed, keys: ${parsed is Map ? parsed.keys.toList() : "list"}', name: 'ImportRepository');
+      developer.log('Response parsed, keys: ${parsed is Map ? parsed.keys.toList() : "list[${(parsed as List?)?.length}]"}', name: 'ImportRepository');
+
+      // Backend returns ParsedReceiptItem[] directly as a JSON array
+      if (parsed is List) {
+        final items = parsed.map((e) => ParsedReceiptItem.fromJson(e as Map<String, dynamic>)).toList();
+        developer.log('Successfully parsed ${items.length} items from array', name: 'ImportRepository');
+        return items;
+      }
 
       if (parsed is Map<String, dynamic>) {
-        // Structured receipt items from /receipt-import
+        // Wrapped format: { items: [...] }
         if (parsed.containsKey('items')) {
-          final items = (parsed['items'] as List?)?.map((e) => ParsedReceiptItem.fromJson(e)).toList();
+          final items = (parsed['items'] as List?)?.map((e) => ParsedReceiptItem.fromJson(e as Map<String, dynamic>)).toList();
           if (items != null) {
             developer.log('Successfully parsed ${items.length} items', name: 'ImportRepository');
             return items;
           }
         }
-        // Markdown-based receipt from /quick-import fallback — parse lines into items
+        // Markdown-based receipt fallback — parse lines into items
         if (parsed.containsKey('markdown')) {
           developer.log('Got markdown receipt, parsing lines into items', name: 'ImportRepository');
           final lines = (parsed['markdown'] as String).split('\n');