Redesign Hope iOS UI, harden playback, and document project handoff

Sources/LiveKit/TranscriptHistory.swift

@@ -20,7 +20,7 @@ final class TranscriptHistory: ObservableObject {
     static let maxEntries = 50
 
     init() {
-        if let raw = UserDefaults.standard.string(forKey: Self.key),
+        if let raw = AppPreferences.store.string(forKey: Self.key),
            let data = raw.data(using: .utf8),
            let decoded = try? JSONDecoder().decode([HistoryEntry].self, from: data) {
             entries = Array(decoded.suffix(Self.maxEntries))
@@ -45,6 +45,6 @@ final class TranscriptHistory: ObservableObject {
 
     private func persist() {
         guard let data = try? JSONEncoder().encode(entries) else { return }
-        UserDefaults.standard.set(String(decoding: data, as: UTF8.self), forKey: Self.key)
+        AppPreferences.store.set(String(decoding: data, as: UTF8.self), forKey: Self.key)
     }
 }