fix(talk): align sessions and chat UI

apps/ios/Sources/Chat/ChatSheet.swift

@@ -4,18 +4,20 @@ import SwiftUI
 struct ChatSheet: View {
     @Environment(\.dismiss) private var dismiss
     @State private var viewModel: ClawdisChatViewModel
+    private let userAccent: Color?
 
-    init(bridge: BridgeSession, sessionKey: String = "main") {
+    init(bridge: BridgeSession, sessionKey: String = "main", userAccent: Color? = nil) {
         let transport = IOSBridgeChatTransport(bridge: bridge)
         self._viewModel = State(
             initialValue: ClawdisChatViewModel(
                 sessionKey: sessionKey,
                 transport: transport))
+        self.userAccent = userAccent
     }
 
     var body: some View {
         NavigationStack {
-            ClawdisChatView(viewModel: self.viewModel)
+            ClawdisChatView(viewModel: self.viewModel, userAccent: self.userAccent)
                 .navigationTitle("Chat")
                 .navigationBarTitleDisplayMode(.inline)
                 .toolbar {