multiple receipts in a trip

lib/services/receipt_parse_config.dart

@@ -132,20 +132,19 @@ class ReceiptParseConfig {
 
   /// True if [line] matches a config keyword.
   ///
-  /// Short tokens (3 characters or fewer) use a word boundary so `PIN` does
-  /// not match `SPINAZIE`. Longer tokens use a case-insensitive substring,
-  /// and a letter-only compact form so OCR splits like `Betaal d:` still
-  /// match `BETAALD`.
+  /// Always uses word boundaries so `CHIP` does not match `CHIPS` and `PIN`
+  /// does not match `SPINAZIE`. A letter-only compact form is a fallback for
+  /// OCR splits like `Betaal d:` → `BETAALD` (only for keywords of length ≥ 5,
+  /// so short tokens like `CHIP` cannot match inside longer product words).
   bool matchesKeyword(String line, String keyword) {
     final upper = line.toUpperCase();
     final key = keyword.toUpperCase();
-    if (key.length <= 3) {
-      return RegExp('\\b${RegExp.escape(key)}\\b').hasMatch(upper);
+    if (RegExp('\\b${RegExp.escape(key)}\\b').hasMatch(upper)) {
+      return true;
     }
-    if (upper.contains(key)) return true;
     final compactLine = upper.replaceAll(RegExp(r'[^A-Z0-9]'), '');
     final compactKey = key.replaceAll(RegExp(r'[^A-Z0-9]'), '');
-    return compactKey.length >= 4 && compactLine.contains(compactKey);
+    return compactKey.length >= 5 && compactLine.contains(compactKey);
   }
 
   bool isStandaloneKeywordLine(String line, List<String> keywords) {