wip: age based filtering of options

src/BusProNet/XmlParser/AgeConstraintParserInterface.php

@@ -42,4 +42,4 @@ interface AgeConstraintParserInterface
      * @return string The constraint type identifier (e.g., 'birth_year', 'grade_level')
      */
     public function getConstraintType(): string;
-}
+}

src/BusProNet/XmlParser/AgeConstraintParserRegistry.php

@@ -112,4 +112,4 @@ class AgeConstraintParserRegistry
 
         return min($current, $new); // Most restrictive maximum
     }
-}
+}

src/BusProNet/XmlParser/BirthYearConstraintParser.php

@@ -24,7 +24,7 @@ class BirthYearConstraintParser implements AgeConstraintParserInterface
     public function parse(string $constraintData): AgeConstraintResult
     {
         if (false === $this->canParse($constraintData)) {
-            throw new \InvalidArgumentException('Cannot parse constraint data: ' . $constraintData);
+            throw new \InvalidArgumentException('Cannot parse constraint data: '.$constraintData);
         }
 
         $yearData = substr($constraintData, strlen(self::BIRTH_YEAR_PREFIX));
@@ -64,4 +64,4 @@ class BirthYearConstraintParser implements AgeConstraintParserInterface
     {
         return 'birth_year';
     }
-}
+}

src/BusProNet/XmlParser/TravelParser.php

@@ -28,6 +28,7 @@ class TravelParser extends AbstractParser
     {
         $this->ageConstraintRegistry = new AgeConstraintParserRegistry();
     }
+
     /**
      * Parse XML node into a Travel object.
      *