Implement the SpaceAddRoomsScreen. (#4951)

* Update proxies ready for adding rooms to a space.

- ClientProxy.recentlyVisitedRooms to take a filter and to return room proxies.
- Expose SpaceServiceProxy.addChildToSpace.

* Implement the SpaceAddRoomsScreen.

* Fix the designs of the selected carousels.

Add more snapshot tests for inviting users.

* Fix for screen using wrong avatar size.

ElementX/Sources/Other/Avatars.swift

@@ -66,6 +66,7 @@ enum UserAvatarSizeOnScreen {
     case settings
     case roomDetails
     case roomMembersList
+    case roomChangeRoles
     case dmDetails
     case startChat
     case memberDetails
@@ -110,12 +111,14 @@ enum UserAvatarSizeOnScreen {
             return 44
         case .roomMembersList:
             return 32
+        case .roomChangeRoles:
+            return 56
         case .startChat:
             return 36
         case .memberDetails:
             return 96
         case .inviteUsers:
-            return 56
+            return 52
         case .editUserDetails:
             return 96
         case .dmDetails:
@@ -153,6 +156,8 @@ enum RoomAvatarSizeOnScreen {
     case roomDirectorySearch
     case joinRoom
     case spaceHeader
+    case spaceAddRooms
+    case spaceAddRoomsSelected
     case completionSuggestions
 
     var value: CGFloat {
@@ -164,12 +169,10 @@ enum RoomAvatarSizeOnScreen {
             return 32
         case .notificationSettings:
             return 30
-        case .messageForwarding:
-            return 36
-        case .globalSearch:
-            return 36
-        case .roomSelection:
+        case .messageForwarding, .globalSearch, .roomSelection, .spaceAddRooms:
             return 36
+        case .spaceAddRoomsSelected:
+            return 52
         case .details:
             return 96
         case .joinRoom:

ElementX/Sources/Other/SwiftUI/Views/RemoveItemButton.swift

@@ -0,0 +1,48 @@
+//
+// Copyright 2026 Element Creations Ltd.
+//
+// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+// Please see LICENSE files in the repository root for full details.
+//
+
+import Compound
+import SwiftUI
+
+extension View {
+    func overlayRemoveItemButton(action: @escaping () -> Void) -> some View {
+        modifier(RemoveItemButtonViewModifier(action: action))
+    }
+}
+
+private struct RemoveItemButtonViewModifier: ViewModifier {
+    let action: () -> Void
+    
+    func body(content: Content) -> some View {
+        content
+            .mask {
+                Rectangle()
+                    .fill(.white)
+                    .overlay(alignment: .topTrailing) {
+                        closeButtonLabel
+                            .hidden()
+                            .padding(2)
+                            .overlay { Circle().fill(.black) }
+                            .offset(x: 2, y: -2)
+                    }
+                    .compositingGroup()
+                    .luminanceToAlpha()
+            }
+            .overlay(alignment: .topTrailing) {
+                Button(action: action) {
+                    closeButtonLabel
+                }
+            }
+    }
+    
+    var closeButtonLabel: some View {
+        CompoundIcon(\.close, size: .custom(12), relativeTo: .compound.bodySM)
+            .foregroundStyle(.compound.iconOnSolidPrimary)
+            .padding(2)
+            .background(.compound.iconPrimary, in: Circle())
+    }
+}

ElementX/Sources/Other/TestablePreview/TestablePreviewsDictionary.swift

@@ -163,6 +163,8 @@ enum TestablePreviewsDictionary {
         "SettingsScreen_Previews" : SettingsScreen_Previews.self,
         "ShimmerOverlay_Previews" : ShimmerOverlay_Previews.self,
         "SoftLogoutScreen_Previews" : SoftLogoutScreen_Previews.self,
+        "SpaceAddRoomsScreenSelectedItem_Previews" : SpaceAddRoomsScreenSelectedItem_Previews.self,
+        "SpaceAddRoomsScreen_Previews" : SpaceAddRoomsScreen_Previews.self,
         "SpaceHeaderTopicSheetView_Previews" : SpaceHeaderTopicSheetView_Previews.self,
         "SpaceHeaderView_Previews" : SpaceHeaderView_Previews.self,
         "SpaceListScreen_Previews" : SpaceListScreen_Previews.self,