Show jump-to-unread when read marker is outside the loaded window

When the m.fully_read marker event is older than the loaded timeline
window, no virtual ReadMarker item is inserted and the chevron-up FAB
silently no-ops. Surfaces the SDK's new fully_read_event_id on RoomInfo
and routes the tap through the existing FocusOnEvent flow so the FAB
appears in catch-up scenarios and lands the user on the marker.

Bumps matrix-rust-components-kotlin to 26.05.20 to pick up the FFI
field; absorbs the ClientBuildException.InvalidRawKey and suspend
SpaceRoomList.rooms / subscribeToRoomUpdate API breaks.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/auth/AuthenticationException.kt

@@ -28,6 +28,7 @@ fun Throwable.mapAuthenticationException(): AuthenticationException {
             }
             is ClientBuildException.WellKnownLookupFailed -> AuthenticationException.Generic(message)
             is ClientBuildException.EventCache -> AuthenticationException.Generic(message)
+            is ClientBuildException.InvalidRawKey -> AuthenticationException.Generic(message)
         }
         is OAuthException -> when (this) {
             is OAuthException.Generic -> AuthenticationException.OAuth(message)

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RoomInfoMapper.kt

@@ -71,6 +71,7 @@ class RoomInfoMapper {
             numUnreadMessages = it.numUnreadMessages.toLong(),
             numUnreadMentions = it.numUnreadMentions.toLong(),
             numUnreadNotifications = it.numUnreadNotifications.toLong(),
+            fullyReadEventId = it.fullyReadEventId?.let(::EventId),
             historyVisibility = it.historyVisibility.map(),
             successorRoom = it.successorRoom?.map(),
             roomVersion = it.roomVersion,

libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/factories/RoomInfo.kt

@@ -52,6 +52,7 @@ internal fun aRustRoomInfo(
     numUnreadMessages: ULong = 0uL,
     numUnreadNotifications: ULong = 0uL,
     numUnreadMentions: ULong = 0uL,
+    fullyReadEventId: String? = null,
     pinnedEventIds: List<String> = listOf(),
     roomCreators: List<String>? = emptyList(),
     joinRule: JoinRule? = null,
@@ -93,6 +94,7 @@ internal fun aRustRoomInfo(
     numUnreadMessages = numUnreadMessages,
     numUnreadNotifications = numUnreadNotifications,
     numUnreadMentions = numUnreadMentions,
+    fullyReadEventId = fullyReadEventId,
     pinnedEventIds = pinnedEventIds,
     creators = roomCreators,
     joinRule = joinRule,

libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/fakes/FakeFfiSpaceRoomList.kt

@@ -40,8 +40,8 @@ class FakeFfiSpaceRoomList(
         return paginationStateResult()
     }
 
-    override fun rooms(): List<SpaceRoom> {
-        return roomsResult()
+    override suspend fun rooms(): List<SpaceRoom> = simulateLongTask {
+        roomsResult()
     }
 
     override fun subscribeToPaginationStateUpdates(listener: SpaceRoomListPaginationStateListener): TaskHandle {
@@ -53,7 +53,7 @@ class FakeFfiSpaceRoomList(
         spaceRoomListPaginationStateListener?.onUpdate(state)
     }
 
-    override fun subscribeToRoomUpdate(listener: SpaceRoomListEntriesListener): TaskHandle {
+    override suspend fun subscribeToRoomUpdate(listener: SpaceRoomListEntriesListener): TaskHandle {
         spaceRoomListEntriesListener = listener
         return FakeFfiTaskHandle()
     }

libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/room/RoomInfoMapperTest.kt

@@ -79,6 +79,7 @@ class RoomInfoMapperTest {
                     numUnreadMessages = 12uL,
                     numUnreadNotifications = 13uL,
                     numUnreadMentions = 14uL,
+                    fullyReadEventId = AN_EVENT_ID.value,
                     pinnedEventIds = listOf(AN_EVENT_ID.value),
                     roomCreators = listOf(A_USER_ID.value),
                     historyVisibility = RustRoomHistoryVisibility.Joined,
@@ -131,6 +132,7 @@ class RoomInfoMapperTest {
                 numUnreadMessages = 12L,
                 numUnreadNotifications = 13L,
                 numUnreadMentions = 14L,
+                fullyReadEventId = AN_EVENT_ID,
                 historyVisibility = RoomHistoryVisibility.Joined,
                 successorRoom = null,
                 roomVersion = "12",
@@ -223,6 +225,7 @@ class RoomInfoMapperTest {
                 numUnreadMessages = 12L,
                 numUnreadNotifications = 13L,
                 numUnreadMentions = 14L,
+                fullyReadEventId = null,
                 historyVisibility = RoomHistoryVisibility.Joined,
                 roomVersion = "12",
                 privilegedCreatorRole = true,