fix(expo): add iOS getClientToken bridge method and pass keychain config to Clerk.configure

Restore the getClientToken bridge method on iOS so native-to-JS
session sync works after native sign-in (AuthView/InlineAuthView).

Pass the resolved keychainService to Clerk.configure() via options
so the native SDK uses the same keychain service as our helpers,
supporting custom keychain services via ClerkKeychainService in
Info.plist.

Author: chriscanin

packages/expo/ios/ClerkExpoModule.swift

@@ -22,6 +22,7 @@ public protocol ClerkViewFactoryProtocol {
   // SDK operations
   func configure(publishableKey: String, bearerToken: String?) async throws
   func getSession() async -> [String: Any]?
+  func getClientToken() -> String?
   func signOut() async throws
 }
 
@@ -170,6 +171,18 @@ class ClerkExpoModule: RCTEventEmitter {
     }
   }
 
+  // MARK: - getClientToken
+
+  @objc func getClientToken(_ resolve: @escaping RCTPromiseResolveBlock,
+                              reject: @escaping RCTPromiseRejectBlock) {
+    guard let factory = clerkViewFactory else {
+      resolve(nil)
+      return
+    }
+
+    resolve(factory.getClientToken())
+  }
+
   // MARK: - signOut
 
   @objc func signOut(_ resolve: @escaping RCTPromiseResolveBlock,

packages/expo/ios/ClerkViewFactory.swift

@@ -64,7 +64,12 @@ public class ClerkViewFactory: ClerkViewFactoryProtocol {
     }
 
     Self.clerkConfigured = true
-    Clerk.configure(publishableKey: publishableKey)
+    let options: Clerk.Options = if let service = Self.keychainService {
+      .init(keychainConfig: .init(service: service))
+    } else {
+      .init()
+    }
+    Clerk.configure(publishableKey: publishableKey, options: options)
 
     // Wait for Clerk to finish loading (cached data + API refresh).
     // The static configure() fires off async refreshes; poll until loaded.
@@ -200,6 +205,10 @@ public class ClerkViewFactory: ClerkViewFactoryProtocol {
     }
   }
 
+  public func getClientToken() -> String? {
+    return Self.readNativeDeviceToken()
+  }
+
   public func createAuthViewController(
     mode: String,
     dismissable: Bool,