Fix/geohash work (#475)

* Scroll UX: auto-scroll only when last item visible; preserve user position when scrolled up for mesh/geohash/DM; reduce blanking after very long messages

* iOS: re-enable keyboard autocomplete and default capitalization for message input

* Styling: stop blue/underline styling for #hashtags; render as normal text color (self=orange, others=green)

* Geo UI: ensure self shows teleported (face.dashed) if either per-session tag or manager flag is true

* Geo teleported: publish UI updates by assigning @Published Set instead of in-place insert; update on tag receipt and channel switch

---------

Co-authored-by: jack <jackjackbits@users.noreply.github.com>

bitchat/ViewModels/ChatViewModel.swift

@@ -1179,8 +1179,8 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             self.recordGeoParticipant(pubkeyHex: id.publicKeyHex)
             #if os(iOS)
             if LocationChannelManager.shared.teleported {
-                teleportedGeo.insert(id.publicKeyHex.lowercased())
+                let key = id.publicKeyHex.lowercased()
-                objectWillChange.send()
+                teleportedGeo = teleportedGeo.union([key])
             }
             #endif
         }
@@ -1198,9 +1198,8 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             // Track teleport tag for participants
             if let teleTag = event.tags.first(where: { $0.first == "t" }), teleTag.count >= 2, teleTag[1] == "teleport" {
                 let key = event.pubkey.lowercased()
-                if !self.teleportedGeo.contains(key) {
+                Task { @MainActor in
-                    self.teleportedGeo.insert(key)
+                    self.teleportedGeo = self.teleportedGeo.union([key])
-                    DispatchQueue.main.async { [weak self] in self?.objectWillChange.send() }
                 }
             }
             // Skip our own events (we already locally echoed)
@@ -2826,17 +2825,25 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                             result.append(AttributedString(mSuffix).mergingAttributes(light))
                         }
                     } else {
-                        var matchStyle = AttributeContainer()
+                        // Style non-mention matches
-                        matchStyle.font = .system(size: 14, weight: isSelf ? .bold : .semibold, design: .monospaced)
-                        // Self messages use orange for all tokens; others keep blue for links/hashtags
                         if type == "hashtag" {
-                            matchStyle.foregroundColor = isSelf ? .orange : .blue
+                            // Do NOT special-style hashtags: render like normal content (no blue, no underline)
-                            matchStyle.underlineStyle = .single
+                            var tagStyle = AttributeContainer()
-                        } else if type == "url" {
+                            tagStyle.font = isSelf
-                            matchStyle.foregroundColor = isSelf ? .orange : .blue
+                                ? .system(size: 14, weight: .bold, design: .monospaced)
-                            matchStyle.underlineStyle = .single
+                                : .system(size: 14, design: .monospaced)
+                            tagStyle.foregroundColor = baseColor
+                            result.append(AttributedString(matchText).mergingAttributes(tagStyle))
+                        } else {
+                            // Keep URL styling (blue + underline for non-self, orange for self)
+                            var matchStyle = AttributeContainer()
+                            matchStyle.font = .system(size: 14, weight: isSelf ? .bold : .semibold, design: .monospaced)
+                            if type == "url" {
+                                matchStyle.foregroundColor = isSelf ? .orange : .blue
+                                matchStyle.underlineStyle = .single
+                            }
+                            result.append(AttributedString(matchText).mergingAttributes(matchStyle))
                         }
-                        result.append(AttributedString(matchText).mergingAttributes(matchStyle))
                     }
                     lastEnd = nsRange.upperBound
                 }

bitchat/Views/ContentView.swift

@@ -267,6 +267,7 @@ struct ContentView: View {
     
     private func messagesView(privatePeer: String?) -> some View {
         ScrollViewReader { proxy in
+            @State var isAtBottom: Bool = true
             ScrollView {
                 LazyVStack(alignment: .leading, spacing: 0) {
                     // Extract messages based on context (private or public chat)
@@ -325,6 +326,17 @@ struct ContentView: View {
                             }
                         }
                         .id(message.id)
+                        .onAppear {
+                            // Track if last item is visible to enable auto-scroll only when near bottom
+                            if message.id == windowedMessages.last?.id {
+                                isAtBottom = true
+                            }
+                        }
+                        .onDisappear {
+                            if message.id == windowedMessages.last?.id {
+                                isAtBottom = false
+                            }
+                        }
                         .contentShape(Rectangle())
                         .onTapGesture {
                             // Only show actions for messages from other users (not system or self)
@@ -347,6 +359,8 @@ struct ContentView: View {
             }
             .onChange(of: viewModel.messages.count) { _ in
                 if privatePeer == nil && !viewModel.messages.isEmpty {
+                    // Only autoscroll when user is at/near bottom
+                    guard isAtBottom else { return }
                     // Throttle scroll animations to prevent excessive UI updates
                     let now = Date()
                     if now.timeIntervalSince(lastScrollTime) > 0.5 {
@@ -367,6 +381,8 @@ struct ContentView: View {
                 if let peerID = privatePeer,
                    let messages = viewModel.privateChats[peerID],
                    !messages.isEmpty {
+                    // Only autoscroll when user is at/near bottom
+                    guard isAtBottom else { return }
                     // Same throttling for private chats
                     let now = Date()
                     if now.timeIntervalSince(lastScrollTime) > 0.5 {
@@ -508,10 +524,7 @@ struct ContentView: View {
                 .foregroundColor(textColor)
                 .focused($isTextFieldFocused)
                 .padding(.leading, 12)
-                .autocorrectionDisabled(true)
+                // iOS keyboard autocomplete and capitalization enabled by default
-                #if os(iOS)
-                .textInputAutocapitalization(.never)
-                #endif
                 .onChange(of: messageText) { newValue in
                     // Cancel previous debounce timer
                     autocompleteDebounceTimer?.invalidate()

bitchat/Views/GeohashPeopleList.swift

@@ -40,7 +40,8 @@ struct GeohashPeopleList: View {
                             // For the local user, use a different face icon when teleported
                             let isMe = (person.id == myHex)
                             #if os(iOS)
-                            let teleported = isMe ? LocationChannelManager.shared.teleported : viewModel.teleportedGeo.contains(person.id.lowercased())
+                            // Consider either the per-session tag (for any peer) or the manager flag for self
+                            let teleported = viewModel.teleportedGeo.contains(person.id.lowercased()) || (isMe && LocationChannelManager.shared.teleported)
                             #else
                             let teleported = false
                             #endif