scaffolding hermes flow and audit logging

mobile/ios-app/Core/Media/HermesVideoPlayerView.swift

@@ -1,7 +1,7 @@
 import AVKit
 import SwiftUI
 
-struct StudyVideoPlayerView: View {
+struct HermesVideoPlayerView: View {
     @ObservedObject var coordinator: PlayerCoordinator
 
     var body: some View {

mobile/ios-app/Core/Media/PlayerCoordinator.swift

@@ -9,13 +9,15 @@ final class PlayerCoordinator: ObservableObject {
     @Published var isPlaying = false
     @Published var playbackPositionMs: Int = 0
 
-    init(previewURL: URL = URL(string: "https://cdn.example.com/hermes/sample-event/master.m3u8")!) {
-        self.player = AVPlayer(url: previewURL)
+    init() {
+        self.player = AVPlayer()
         self.player.actionAtItemEnd = .pause
     }
 
-    func prepareForPreview() {
-        player.seek(to: .zero)
+    func prepareForPreview(url: URL, startTimeMs: Int = 0) {
+        player.replaceCurrentItem(with: AVPlayerItem(url: url))
+        let startTime = CMTime(seconds: Double(startTimeMs) / 1_000.0, preferredTimescale: 1_000)
+        player.seek(to: startTime)
         player.play()
         isPlaying = true
     }
@@ -30,8 +32,7 @@ final class PlayerCoordinator: ObservableObject {
         isPlaying = false
     }
 
-    func restart() {
-        player.seek(to: .zero)
-        play()
+    func restart(url: URL, startTimeMs: Int = 0) {
+        prepareForPreview(url: url, startTimeMs: startTimeMs)
     }
 }