initial version

PortfolioJournal/Models/CategoryEvolutionPoint.swift

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+import Foundation
+
+struct CategoryEvolutionPoint: Identifiable {
+    let date: Date
+    let categoryName: String
+    let colorHex: String
+    let value: Decimal
+
+    var id: String {
+        "\(categoryName)-\(date.timeIntervalSince1970)"
+    }
+}