dependencies (rust sdk) : replace RoomTombstone by SuccessorRoom

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/RoomInfo.kt

@@ -32,7 +32,6 @@ data class RoomInfo(
     val isEncrypted: Boolean?,
     val joinRule: JoinRule?,
     val isSpace: Boolean,
-    val tombstone: RoomTombstone?,
     val isFavorite: Boolean,
     val canonicalAlias: RoomAlias?,
     val alternativeAliases: ImmutableList<RoomAlias>,
@@ -74,12 +73,8 @@ data class RoomInfo(
     val pinnedEventIds: ImmutableList<EventId>,
     val creator: UserId?,
     val historyVisibility: RoomHistoryVisibility,
+    val successorRoom: SuccessorRoom?,
 ) {
     val aliases: List<RoomAlias>
         get() = listOfNotNull(canonicalAlias) + alternativeAliases
 }
-
-data class RoomTombstone(
-    val body: String,
-    val replacementRoomId: RoomId,
-)

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/SuccessorRoom.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2025 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.libraries.matrix.api.room
+
+import io.element.android.libraries.matrix.api.core.RoomId
+
+/**
+ *
+ * When a room A is tombstoned, it is replaced by a room B. The room A is the
+ * predecessor of B, and B is the successor of A. This type holds information
+ * about the successor room.
+ *
+ * A room is tombstoned if it has received a m.room.tombstone state event.
+ *
+ */
+data class SuccessorRoom(
+    /**
+     * The ID of the replacement room.
+     */
+    val roomId: RoomId,
+    /**
+     * The message explaining why the room has been tombstoned.
+     */
+    val reason: String?,
+)