Improve train status formatting

This change adds proper singular/plural labels for minutes and hours in the lateness display, fixes green status text contrast for dark mode, and updates the README to credit the Amtrak.js models used as a base.

README.md

@@ -38,7 +38,7 @@ This was intended to solve a rather awkward dilemma. I turned a bunch of online
 
 So I created simple frontend that mapped to Dixieland Software's API using Tauri. You could type in simple station code and it'd take you their status board from within the app. Simple, right? Unfortunately, I didn't know how to get it go back to change the station, my attempted UI redesigns kept failing, and I accidentally botched a migration to Tauri 2.0. I'm just not that good with Node.
 
-So it sat abandoned until I discovered [SwiftCrossUI](https://github.com/moreSwift/swift-cross-ui). Now it directly makes use of [Amtraker](https://amtraker.com/)'s API.
+So it sat abandoned until I discovered [SwiftCrossUI](https://github.com/moreSwift/swift-cross-ui). Now it directly makes use of [Amtraker](https://amtraker.com/)'s API, based on models ported from [Amtrak.js](https://github.com/piemadd/amtrak).
 
 ## ⚖️ License
 

Sources/AmtrakStatus/ContentView.swift

@@ -103,7 +103,7 @@ struct ContentView: View {
     func statusColour(_ color: Color) -> Color {
         switch color {
         case .green:
-            return .black
+            return .adaptive(light: .white, dark: .black)
         default:
             return .white
         }

Sources/AmtrakStatus/Helper.swift

@@ -0,0 +1,7 @@
+import Foundation
+
+extension Int {
+    func pluralized(singular: String, plural: String) -> String {
+        self == 1 ? singular : plural
+    }
+}

Sources/AmtrakStatus/TrainLateness.swift

@@ -33,13 +33,17 @@ enum TrainLateness {
         }
     }
     
-    
     static func formatted(_  minutes: Int) -> String {
         let hours = minutes / 60
         let remainder = minutes % 60
+    
+        let minutesPart = "\(minutes) \(minutes.pluralized(singular: "min", plural: "mins"))"
+        let hoursPart = "\(hours) \(hours.pluralized(singular: "hr", plural: "hrs"))"
+        
         guard hours > 0 else {
-            return "\(minutes) mins"
+            return minutesPart
         }
-        return "\(hours) hrs"
+        
+        return hoursPart
     }
 }