Snapshot delivery status in message rows so read receipts render immediately

The publish chain was healthy: the store mutates the shared
BitchatMessage and republishes, the .statusChanged fan-out reaches both
mirrored conversations, and PrivateInboxModel fires objectWillChange for
the selected DM under either key. The break was at the row view:
TextMessageView/MediaMessageView stored the reference-typed message and
read deliveryStatus in body, so SwiftUI's structural diff compared the
field by identity - same instance, mutated in place, row body skipped.
The blue tick waited for an unrelated invalidation (proven empirically
with a hosting-view probe).

Rows now snapshot deliveryStatus as a value at init; every republish
rebuilds row values with a fresh enum, the diff sees the change, and
the row re-renders immediately. Also fixes in-place send-progress
updates in media rows. Regression tests cover both mirrored selection
keyings at the feature-model level and the snapshot mechanic itself.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

bitchat/Views/Components/TextMessageView.swift

@@ -12,10 +12,23 @@ import BitFoundation
 struct TextMessageView: View {
     @Environment(\.colorScheme) private var colorScheme: ColorScheme
     @EnvironmentObject private var conversationUIModel: ConversationUIModel
-    
+
     let message: BitchatMessage
+    /// Value snapshot of the message's mutable delivery status, captured at
+    /// construction. `BitchatMessage` is a reference type mutated in place by
+    /// `ConversationStore`, and SwiftUI compares reference-typed view fields
+    /// by identity — so a status-only change (e.g. delivered → read) on the
+    /// SAME instance would otherwise compare "unchanged" and this row's body
+    /// would be skipped even though the parent list re-rendered. Snapshotting
+    /// the enum makes the change visible to SwiftUI's structural diff.
+    private let deliveryStatus: DeliveryStatus?
     @State private var expandedMessageIDs: Set<String> = []
-    
+
+    init(message: BitchatMessage) {
+        self.message = message
+        self.deliveryStatus = message.deliveryStatus
+    }
+
     var body: some View {
         VStack(alignment: .leading, spacing: 0) {
             // Precompute heavy token scans once per row
@@ -31,7 +44,7 @@ struct TextMessageView: View {
                 
                 // Delivery status indicator for private messages
                 if message.isPrivate && conversationUIModel.isSentByCurrentUser(message),
-                   let status = message.deliveryStatus {
+                   let status = deliveryStatus {
                     DeliveryStatusView(status: status)
                         .padding(.leading, 4)
                 }

bitchat/Views/Media/MediaMessageView.swift

@@ -13,11 +13,24 @@ struct MediaMessageView: View {
     @EnvironmentObject private var conversationUIModel: ConversationUIModel
     let message: BitchatMessage
     let media: BitchatMessage.Media
+    /// Value snapshot of the message's mutable delivery status, captured at
+    /// construction (see `TextMessageView.deliveryStatus`): `BitchatMessage`
+    /// is a reference type mutated in place, and SwiftUI compares reference
+    /// fields by identity, so without the snapshot a status-only change
+    /// (send progress, delivered → read) would not re-render this row.
+    private let deliveryStatus: DeliveryStatus?
 
     @Binding var imagePreviewURL: URL?
 
+    init(message: BitchatMessage, media: BitchatMessage.Media, imagePreviewURL: Binding<URL?>) {
+        self.message = message
+        self.media = media
+        self.deliveryStatus = message.deliveryStatus
+        self._imagePreviewURL = imagePreviewURL
+    }
+
     var body: some View {
-        let state = mediaSendState(for: message)
+        let state = mediaSendState(for: deliveryStatus)
         let isFromMe = conversationUIModel.isMediaMessageFromCurrentUser(message)
         let cancelAction: (() -> Void)? = state.canCancel ? { conversationUIModel.cancelMediaSend(messageID: message.id) } : nil
 
@@ -27,7 +40,7 @@ struct MediaMessageView: View {
                     .fixedSize(horizontal: false, vertical: true)
                     .frame(maxWidth: .infinity, alignment: .leading)
                 if message.isPrivate && conversationUIModel.isSentByCurrentUser(message),
-                   let status = message.deliveryStatus {
+                   let status = deliveryStatus {
                     DeliveryStatusView(status: status)
                         .padding(.leading, 4)
                 }
@@ -63,10 +76,10 @@ struct MediaMessageView: View {
         .padding(.vertical, 4)
     }
 
-    private func mediaSendState(for message: BitchatMessage) -> (isSending: Bool, progress: Double?, canCancel: Bool) {
+    private func mediaSendState(for deliveryStatus: DeliveryStatus?) -> (isSending: Bool, progress: Double?, canCancel: Bool) {
         var isSending = false
         var progress: Double?
-        if let status = message.deliveryStatus {
+        if let status = deliveryStatus {
             switch status {
             case .sending:
                 isSending = true