improve parsing 3

lib/services/receipt_parser.dart

@@ -25,7 +25,7 @@ class ReceiptParser {
 
   /// Primary path: positioned ML Kit elements → row clustering → lookahead.
   static ReceiptParseResult parseReceiptFromOcr(OcrDocument document) =>
-      ReceiptSpatialParser.parse(document);
+      _parseDocument(document);
 
   static ReceiptParseResult parseRecognizedText(
     RecognizedText recognized, {
@@ -37,6 +37,50 @@ class ReceiptParser {
       imageWidth: imageWidth,
       imageHeight: imageHeight,
     );
-    return parseReceiptFromOcr(document);
+    return _parseDocument(document);
+  }
+
+  static ReceiptParseResult _parseDocument(OcrDocument document) {
+    if (ReceiptTextParser.looksLikeColumnOcr(document.flattenedText)) {
+      return _withImageDimensions(
+        ReceiptTextParser.parseReceipt(document.flattenedText),
+        document,
+      );
+    }
+
+    final spatial = ReceiptSpatialParser.parse(document);
+    if (_shouldFallbackToText(spatial)) {
+      return _withImageDimensions(
+        ReceiptTextParser.parseReceipt(document.flattenedText),
+        document,
+      );
+    }
+    return spatial;
+  }
+
+  static bool _shouldFallbackToText(ReceiptParseResult spatial) {
+    if (spatial.items.isEmpty) return true;
+    final flagged =
+        spatial.items.where((item) => item.needsManualReview).length;
+    if (flagged > 0) return true;
+    if (spatial.items.any((item) => item.price <= 0)) return true;
+    if (spatial.receiptTotal != null && !spatial.validationPassed) return true;
+    return false;
+  }
+
+  static ReceiptParseResult _withImageDimensions(
+    ReceiptParseResult result,
+    OcrDocument document,
+  ) {
+    return ReceiptParseResult(
+      items: result.items,
+      store: result.store,
+      receiptTotal: result.receiptTotal,
+      totalDiscount: result.totalDiscount,
+      validationPassed: result.validationPassed,
+      expectedItemCount: result.expectedItemCount,
+      ocrImageWidth: document.imageWidth,
+      ocrImageHeight: document.imageHeight,
+    );
   }
 }