Overhaul native approval UX and add widget surfaces

Bring the SwiftUI app in line with the Apple-native mock and keep pending approvals actionable from Live Activities and watch complications.

swift/WatchApp/Design/StatusDot.swift

@@ -0,0 +1,11 @@
+import SwiftUI
+
+struct StatusDot: View {
+    let color: Color
+
+    var body: some View {
+        Circle()
+            .fill(color)
+            .frame(width: 8, height: 8)
+    }
+}