Two city workers were planting flowers near the Eden Prairie Veterans Memorial on Wednesday morning, getting Purgatory Creek Park ready for Memorial Day. Over the next hour, people came and went on the trail. Someone fished from the nearby pier. John Mallo sat in the shade beside the memorial he helped bring to life. For Mallo, this place is not just granite, bronze and flags. It is a ledger of sacrifice. “Memorial Day is about remembering,” he …