Merge branch 'feat/P2' of github.com:demolaf/FirebaseUI-Android into feat/S3

Author: demolaf

auth/src/main/java/com/firebase/ui/auth/compose/configuration/auth_provider/AuthProvider.kt

@@ -109,11 +109,6 @@ abstract class AuthProvider(open val providerId: String) {
          * @param displayName The display name to set (if current is empty)
          * @param photoUri The photo URL to set (if current is null)
          *
-         * **Old library reference:**
-         * - ProfileMerger.java:34-56 (complete implementation)
-         * - ProfileMerger.java:39-43 (only update if profile incomplete)
-         * - ProfileMerger.java:49-55 (updateProfile call)
-         *
          * **Note:** This operation always succeeds to minimize login interruptions.
          * Failures are logged but don't prevent sign-in completion.
          */
@@ -149,7 +144,6 @@ abstract class AuthProvider(open val providerId: String) {
                 }
             } catch (e: Exception) {
                 // Log error but don't throw - profile update failure shouldn't prevent sign-in
-                // Old library uses TaskFailureLogger for this
                 Log.e("AuthProvider.Email", "Error updating profile", e)
             }
         }

auth/src/main/java/com/firebase/ui/auth/compose/util/EmailLinkPersistenceManager.kt

@@ -36,19 +36,13 @@ private val Context.dataStore: DataStore<Preferences> by preferencesDataStore(na
  * - Anonymous user ID for upgrade flows
  * - Social provider credentials for linking flows
  *
- * **Old library reference:**
- * - EmailLinkPersistenceManager.java (complete implementation)
- *
  * @since 10.0.0
  */
 object EmailLinkPersistenceManager {
 
     /**
      * Saves email and session information to DataStore for email link sign-in.
      *
-     * **Old library reference:**
-     * - EmailLinkPersistenceManager.java:47-59 (saveEmail method)
-     *
      * @param context Android context for DataStore access
      * @param email Email address to save
      * @param sessionId Unique session identifier for same-device validation
@@ -74,11 +68,6 @@ object EmailLinkPersistenceManager {
      * but an email link account with the same email already exists. The credential is saved
      * and will be linked after the user completes email link authentication.
      *
-     * **Old library reference:**
-     * - EmailLinkPersistenceManager.java:61-80 (saveIdpResponseForLinking method)
-     * - SocialProviderResponseHandler.java:144-152 (caller - redirects to email link flow)
-     * - EmailActivity.java:92-93 (caller - saves credential before showing email link UI)
-     *
      * @param context Android context for DataStore access
      * @param providerType Provider ID ("google.com", "facebook.com", etc.)
      * @param idToken ID token from the provider
@@ -100,9 +89,6 @@ object EmailLinkPersistenceManager {
     /**
      * Retrieves session information from DataStore.
      *
-     * **Old library reference:**
-     * - EmailLinkPersistenceManager.java:82-110 (retrieveSessionRecord method)
-     *
      * @param context Android context for DataStore access
      * @return SessionRecord containing saved session data, or null if no session exists
      */
@@ -142,9 +128,6 @@ object EmailLinkPersistenceManager {
     /**
      * Clears all saved data from DataStore.
      *
-     * **Old library reference:**
-     * - EmailLinkPersistenceManager.java:112-121 (clearAllData method)
-     *
      * @param context Android context for DataStore access
      */
     suspend fun clear(context: Context) {
@@ -161,9 +144,6 @@ object EmailLinkPersistenceManager {
     /**
      * Holds the necessary information to complete the email link sign in flow.
      *
-     * **Old library reference:**
-     * - EmailLinkPersistenceManager.SessionRecord (lines 123-164)
-     *
      * @property sessionId Unique session identifier for same-device validation
      * @property email Email address for sign-in
      * @property anonymousUserId Optional anonymous user ID for upgrade flows