Train status is now coloured coded for your convenience

- Introduced TrainLateness enum to represent on-time, early, late (with minutes), and unknown states, including description text, color, and formatting logic.
- Replaced TrainStatusRow.status String with TrainLateness and update ContentView to render a colored status pill and to return TrainLateness from isOnTime.

Sources/AmtrakStatus/TrainLateness.swift

@@ -0,0 +1,45 @@
+import Foundation
+import SwiftCrossUI
+
+enum TrainLateness {
+    case onTime
+    case early(minutes: Int)
+    case late(minutes: Int)
+    case unknown
+    
+    var descrption: String {
+        switch self {
+        case .onTime:
+            return "On Time"
+        case .early(minutes: let minutes):
+            return "\(Self.formatted(minutes)) early"
+        case .late(minutes: let minutes):
+            return "\(Self.formatted(minutes)) late"
+        case .unknown:
+            return ""
+        }
+    }
+    
+    var color: Color {
+        switch self {
+        case .onTime:
+            return .green
+        case .early:
+            return .blue
+        case .late:
+            return .red
+        case .unknown:
+            return .gray
+        }
+    }
+    
+    
+    static func formatted(_  minutes: Int) -> String {
+        let hours = minutes / 60
+        let remainder = minutes % 60
+        guard hours > 0 else {
+            return "\(minutes) mins"
+        }
+        return "\(hours) hr late"
+    }
+}