QR verification: speed + persistence + UX

- Inject live Noise into VerificationService; prewarm QR on app start
- Keep camera active; remove intermediate responder toast
- One-shot/dupe guards and deferred send on handshake
- Persist verified status immediately; standardize fingerprint (SHA-256)
- Show verified badge for offline favorites; mutual verification toast
- VERIFY sheet styling to match peer sheet; UI polish
- Logs to diagnose verified load + favorites mapping

.gitignore

@@ -71,7 +71,3 @@ __pycache__/
 # Local build results
 .Result*/
 .Result*.xcresult/
-TestResult.xcresult/
-*.xcresult/
-build.log
-*.log

bitchat.xcodeproj/project.pbxproj

@@ -17,7 +17,6 @@
 		0475028D2E54171C0083520F /* LocationChannelManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0475028B2E54171C0083520F /* LocationChannelManager.swift */; };
 		0475028F2E5417660083520F /* LocationChannelsSheet.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0475028E2E5417660083520F /* LocationChannelsSheet.swift */; };
 		047502902E5417660083520F /* LocationChannelsSheet.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0475028E2E5417660083520F /* LocationChannelsSheet.swift */; };
-
 		047502922E547ACC0083520F /* LocationChannelsTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 047502912E547ACC0083520F /* LocationChannelsTests.swift */; };
 		047502932E547ACC0083520F /* LocationChannelsTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 047502912E547ACC0083520F /* LocationChannelsTests.swift */; };
 		047502AC2E55E8360083520F /* BinaryProtocolPaddingTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 047502AB2E55E8360083520F /* BinaryProtocolPaddingTests.swift */; };
@@ -246,7 +245,6 @@
 		9AB6BE4ABD7F5088E9865E56 /* NoiseSession.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NoiseSession.swift; sourceTree = "<group>"; };
 		A08E03AA0C63E97C91749AEC /* ContentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContentView.swift; sourceTree = "<group>"; };
 		A2136C3E22D02D4A8DBE7EAB /* BinaryProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BinaryProtocol.swift; sourceTree = "<group>"; };
-
 		AA11BB22CC33DD44EE55FF68 /* MessageTextHelpers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MessageTextHelpers.swift; sourceTree = "<group>"; };
 		B1D6A89B36A3D31E590B94E5 /* NoiseHandshakeCoordinator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NoiseHandshakeCoordinator.swift; sourceTree = "<group>"; };
 		C0DB1DE27F0AAB5092663E8E /* bitchatTests_iOS.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = bitchatTests_iOS.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -443,7 +441,6 @@
 				047502B22E55FED60083520F /* GeohashPeopleList.swift */,
 				047502B32E55FED60083520F /* MeshPeerList.swift */,
 				0475028E2E5417660083520F /* LocationChannelsSheet.swift */,
-
 				763E0DBA9492A654FC0CDCB9 /* AppInfoView.swift */,
 				A08E03AA0C63E97C91749AEC /* ContentView.swift */,
 				9195CDC7EB236AFBC9A4D41A /* FingerprintView.swift */,
@@ -758,7 +755,6 @@
 				7241FFD6CFFB875B864FA223 /* InputValidator.swift in Sources */,
 				FB8819B4C84FAFEF5C36B216 /* KeychainManager.swift in Sources */,
 				0475028F2E5417660083520F /* LocationChannelsSheet.swift in Sources */,
-
 				501BC56B1A08C0327A09AAF1 /* NoiseEncryptionService.swift in Sources */,
 				0475028C2E54171C0083520F /* LocationChannelManager.swift in Sources */,
 				AFF33EF44626EF0579D17EB1 /* NoiseHandshakeCoordinator.swift in Sources */,
@@ -816,7 +812,6 @@
 				EF49C600C1E464710DD6CA29 /* InputValidator.swift in Sources */,
 				8F737CE0435792CC2AD65FCB /* KeychainManager.swift in Sources */,
 				047502902E5417660083520F /* LocationChannelsSheet.swift in Sources */,
-
 				5EE49E150BBF0488E7473687 /* NoiseEncryptionService.swift in Sources */,
 				0475028D2E54171C0083520F /* LocationChannelManager.swift in Sources */,
 				6D0D4A0B1D8B659DCBAE7C9C /* NoiseHandshakeCoordinator.swift in Sources */,

bitchat/BitchatApp.swift

@@ -109,8 +109,20 @@ struct BitchatApp: App {
             userDefaults.removeObject(forKey: "sharedContentDate")
             userDefaults.synchronize()
             
-            // Send the shared content immediately on the main queue
+            // Show notification about shared content
             DispatchQueue.main.async {
+                // Add system message about sharing
+                let systemMessage = BitchatMessage(
+                    sender: "system",
+                    content: "preparing to share \(contentType)...",
+                    timestamp: Date(),
+                    isRelay: false
+                )
+                self.chatViewModel.messages.append(systemMessage)
+            }
+            
+            // Send the shared content after a short delay
+            DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
                 if contentType == "url" {
                     // Try to parse as JSON first
                     if let data = sharedContent.data(using: .utf8),

bitchat/Identity/IdentityModels.swift

@@ -173,7 +173,56 @@ struct PendingActions {
     var setPetname: String?
 }
 
-//
+// MARK: - Privacy Settings
+
+struct PrivacySettings: Codable {
+    // Level 1: Maximum privacy (default)
+    var persistIdentityCache = false
+    var showLastSeen = false
+    
+    // Level 2: Convenience
+    var autoAcceptKnownFingerprints = false
+    var rememberNicknameHistory = false
+    
+    // Level 3: Social
+    var shareTrustNetworkHints = false  // "3 mutual contacts trust this person"
+}
+
+// MARK: - Conflict Resolution
+
+/// Strategies for resolving identity conflicts in the decentralized network.
+/// Handles cases where multiple peers claim the same nickname or when
+/// identity mappings become ambiguous due to network partitions.
+enum ConflictResolution {
+    case acceptNew(petname: String)      // "John (2)"
+    case rejectNew
+    case blockFingerprint(String)
+    case alertUser(message: String)
+}
+
+// MARK: - UI State
+
+struct PeerUIState {
+    let peerID: String
+    let nickname: String
+    var identityState: IdentityState
+    var connectionQuality: ConnectionQuality
+    
+    enum IdentityState {
+        case unknown                    // Gray - No identity info
+        case unverifiedKnown(String)   // Blue - Handshake done, matches cache
+        case verified(String)          // Green - Cryptographically verified
+        case conflict(String, String)  // Red - Nickname doesn't match fingerprint
+        case pending                   // Yellow - Handshake in progress
+    }
+}
+
+enum ConnectionQuality {
+    case excellent
+    case good
+    case poor
+    case disconnected
+}
 
 // MARK: - Migration Support
-//
+// Removed LegacyFavorite - no longer needed

bitchat/Models/BitchatPeer.swift

@@ -89,4 +89,219 @@ struct BitchatPeer: Identifiable, Equatable {
     }
 }
 
-//
+// MARK: - Peer Manager
+
+/// Manages the collection of peers and their states
+@MainActor
+class PeerManager: ObservableObject {
+    @Published var peers: [BitchatPeer] = []
+    @Published var favorites: [BitchatPeer] = []
+    @Published var mutualFavorites: [BitchatPeer] = []
+    
+    private let meshService: Transport
+    private let favoritesService = FavoritesPersistenceService.shared
+    
+    init(meshService: Transport) {
+        self.meshService = meshService
+        updatePeers()
+        
+        // Listen for updates
+        NotificationCenter.default.addObserver(
+            self,
+            selector: #selector(handleFavoriteChanged),
+            name: .favoriteStatusChanged,
+            object: nil
+        )
+    }
+    
+    @objc private func handleFavoriteChanged() {
+        SecureLogger.log("⭐ Favorite status changed notification received, updating peers", 
+                        category: SecureLogger.session, level: .debug)
+        updatePeers()
+    }
+    
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+    
+    func updatePeers() {
+        // Reduce log verbosity - only log when count changes
+        let previousCount = peers.count
+        
+        // Get current mesh peers
+        let meshPeers = meshService.getPeerNicknames()
+        
+        // Build peer list
+        var allPeers: [BitchatPeer] = []
+        var connectedNicknames: Set<String> = []
+        var addedPeerIDs: Set<String> = []
+        
+        // Add connected mesh peers (only if actually connected or relay connected)
+        for (peerID, nickname) in meshPeers {
+            guard let noiseKey = Data(hexString: peerID) else { continue }
+            
+            // Safety check: Never add our own peer ID
+            if peerID == meshService.myPeerID {
+                continue
+            }
+            
+            // Check if this peer is actually connected
+            let isConnected = meshService.isPeerConnected(peerID)
+            
+            // Skip disconnected peers unless they're favorites (handled later)
+            if !isConnected {
+                continue
+            }
+            
+            if isConnected {
+                connectedNicknames.insert(nickname)
+            }
+            
+            // Track that we've added this peer ID
+            addedPeerIDs.insert(peerID)
+            
+            var peer = BitchatPeer(
+                id: peerID,
+                noisePublicKey: noiseKey,
+                nickname: nickname,
+                isConnected: isConnected
+            )
+            // Set favorite status - check both by current noise key and by nickname
+            if let favoriteStatus = favoritesService.getFavoriteStatus(for: noiseKey) {
+                peer.favoriteStatus = favoriteStatus
+                peer.nostrPublicKey = favoriteStatus.peerNostrPublicKey
+            } else {
+                // Check if we have a favorite for this nickname (peer may have reconnected with new ID)
+                let favoriteByNickname = favoritesService.favorites.values.first { $0.peerNickname == nickname }
+                if let favorite = favoriteByNickname {
+                    SecureLogger.log("🔄 Found favorite for '\(nickname)' by nickname, updating noise key", 
+                                    category: SecureLogger.session, level: .info)
+                    // Update the favorite's noise key to match the current connection
+                    favoritesService.updateNoisePublicKey(from: favorite.peerNoisePublicKey, to: noiseKey, peerNickname: nickname)
+                    // Get the updated favorite with the new key
+                    peer.favoriteStatus = favoritesService.getFavoriteStatus(for: noiseKey)
+                    peer.nostrPublicKey = peer.favoriteStatus?.peerNostrPublicKey ?? favorite.peerNostrPublicKey
+                }
+            }
+            allPeers.append(peer)
+        }
+        
+        // Add offline favorites (only those not currently connected AND that we actively favorite)
+        
+        for (favoriteKey, favorite) in favoritesService.favorites {
+            let favoriteID = favorite.peerNoisePublicKey.hexEncodedString()
+            
+            // Skip if this peer is already connected (by nickname)
+            if connectedNicknames.contains(favorite.peerNickname) {
+                // Skipping favorite - already connected
+                continue
+            }
+            
+            // Skip if we already added a peer with this ID (prevents duplicates)
+            if addedPeerIDs.contains(favoriteID) {
+                // Skipping favorite - peer ID already added
+                continue
+            }
+            
+            // Only add peers that WE favorite (not just ones who favorite us)
+            if !favorite.isFavorite {
+                // Skipping - we don't favorite them
+                continue
+            }
+            
+            // Add this favorite as an offline peer
+            SecureLogger.log("  - Adding offline favorite '\(favorite.peerNickname)' (key: \(favoriteKey.hexEncodedString()), ID: \(favoriteID), mutual: \(favorite.isMutual))", 
+                            category: SecureLogger.session, level: .info)
+            
+            var peer = BitchatPeer(
+                id: favoriteID,
+                noisePublicKey: favorite.peerNoisePublicKey,
+                nickname: favorite.peerNickname,
+                isConnected: false
+            )
+            // Set favorite status
+            peer.favoriteStatus = favorite
+            peer.nostrPublicKey = favorite.peerNostrPublicKey
+            addedPeerIDs.insert(favoriteID)  // Track that we've added this ID
+            allPeers.append(peer)
+        }
+        
+        // Filter out "Unknown" peers unless they are favorites or have a favorite relationship
+        allPeers = allPeers.filter { peer in
+            !(peer.displayName == "Unknown" && peer.favoriteStatus == nil)
+        }
+        
+        // Sort: Connected first, then favorites, then alphabetical
+        allPeers.sort { lhs, rhs in
+            // Direct connections first
+            if lhs.isConnected != rhs.isConnected {
+                return lhs.isConnected
+            }
+            // Then favorites
+            if lhs.isFavorite != rhs.isFavorite {
+                return lhs.isFavorite
+            }
+            // Finally alphabetical
+            return lhs.displayName < rhs.displayName
+        }
+        
+        // Single pass to compute all subsets and counts
+        var favorites: [BitchatPeer] = []
+        var mutualFavorites: [BitchatPeer] = []
+        var connectedCount = 0
+        var offlineCount = 0
+        
+        for peer in allPeers {
+            if peer.isFavorite {
+                favorites.append(peer)
+            }
+            if peer.isMutualFavorite {
+                mutualFavorites.append(peer)
+            }
+            if peer.isConnected {
+                connectedCount += 1
+            } else {
+                offlineCount += 1
+            }
+        }
+        
+        // Final safety check: ensure no duplicate IDs
+        var finalPeers: [BitchatPeer] = []
+        var seenIDs: Set<String> = []
+        for peer in allPeers {
+            if !seenIDs.contains(peer.id) {
+                seenIDs.insert(peer.id)
+                finalPeers.append(peer)
+            } else {
+                SecureLogger.log("⚠️ Removing duplicate peer ID in final check: \(peer.id) (\(peer.displayName))", 
+                               category: SecureLogger.session, level: .warning)
+            }
+        }
+        
+        self.peers = finalPeers
+        self.favorites = favorites
+        self.mutualFavorites = mutualFavorites
+        
+        // Log peer list summary sparingly at debug level
+        if favoritesService.favorites.count > 0 {
+            SecureLogger.log("📊 Peer list update: \(allPeers.count) total (\(connectedCount) connected, \(offlineCount) offline), \(favorites.count) favorites, \(mutualFavorites.count) mutual", 
+                            category: SecureLogger.session, level: .debug)
+        } else if previousCount != allPeers.count {
+            SecureLogger.log("✅ Updated peer list: \(allPeers.count) total peers", 
+                            category: SecureLogger.session, level: .debug)
+        }
+    }
+    
+    func toggleFavorite(_ peer: BitchatPeer) {
+        if peer.isFavorite {
+            favoritesService.removeFavorite(peerNoisePublicKey: peer.noisePublicKey)
+        } else {
+            favoritesService.addFavorite(
+                peerNoisePublicKey: peer.noisePublicKey,
+                peerNostrPublicKey: peer.nostrPublicKey,
+                peerNickname: peer.nickname
+            )
+        }
+        updatePeers()
+    }
+}

bitchat/Nostr/NostrProtocol.swift

@@ -122,8 +122,8 @@ struct NostrProtocol {
             tags: tags,
             content: content
         )
-        let schnorrKey = try senderIdentity.schnorrSigningKey()
-        return try event.sign(with: schnorrKey)
+        let signingKey = try senderIdentity.signingKey()
+        return try event.sign(with: signingKey)
     }
     
     // MARK: - Private Methods
@@ -149,8 +149,9 @@ struct NostrProtocol {
             content: encrypted
         )
         
-        // Sign the seal with the sender's Schnorr private key
-        return try seal.sign(with: senderKey)
+        // Convert to P256K.Signing.PrivateKey for signing (temporary until we update sign method)
+        let signingKey = try P256K.Signing.PrivateKey(dataRepresentation: senderKey.dataRepresentation)
+        return try seal.sign(with: signingKey)
     }
     
     private static func createGiftWrap(
@@ -180,8 +181,9 @@ struct NostrProtocol {
             content: encrypted
         )
         
-        // Sign the gift wrap with the wrap Schnorr private key
-        return try giftWrap.sign(with: wrapKey)
+        // Convert to P256K.Signing.PrivateKey for signing (temporary until we update sign method)
+        let signingKey = try P256K.Signing.PrivateKey(dataRepresentation: wrapKey.dataRepresentation)
+        return try giftWrap.sign(with: signingKey)
     }
     
     private static func unwrapGiftWrap(
@@ -414,7 +416,7 @@ struct NostrProtocol {
         
         // Log with explicit UTC and local time for debugging
         let formatter = DateFormatter()
-        //
+        // Removed unnecessary date formatting operations
         formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
         formatter.timeZone = TimeZone(abbreviation: "UTC")
         
@@ -470,16 +472,19 @@ struct NostrEvent: Codable {
         self.sig = dict["sig"] as? String
     }
     
-    func sign(with key: P256K.Schnorr.PrivateKey) throws -> NostrEvent {
+    func sign(with key: P256K.Signing.PrivateKey) throws -> NostrEvent {
         let (eventId, eventIdHash) = try calculateEventId()
         
-        // Sign with Schnorr (BIP-340)
+        // Convert to Schnorr key for Nostr signing
+        let schnorrKey = try P256K.Schnorr.PrivateKey(dataRepresentation: key.dataRepresentation)
+        
+        // Sign with Schnorr
         var messageBytes = [UInt8](eventIdHash)
         var auxRand = [UInt8](repeating: 0, count: 32)
         _ = auxRand.withUnsafeMutableBytes { ptr in
             SecRandomCopyBytes(kSecRandomDefault, 32, ptr.baseAddress!)
         }
-        let schnorrSignature = try key.signature(message: &messageBytes, auxiliaryRand: &auxRand)
+        let schnorrSignature = try schnorrKey.signature(message: &messageBytes, auxiliaryRand: &auxRand)
         
         let signatureHex = schnorrSignature.dataRepresentation.hexEncodedString()
         

bitchat/Protocols/BitchatProtocol.swift

@@ -181,7 +181,8 @@ enum LazyHandshakeState {
     case failed(Error)         // Handshake failed
 }
 
-//
+// MARK: - Special Recipients (removed)
+// Previously defined broadcast identifiers were unused; removed for simplicity.
 
 // MARK: - Core Protocol Structures
 
@@ -267,7 +268,8 @@ struct BitchatPacket: Codable {
     }
 }
 
-//
+// MARK: - Delivery Acknowledgments (removed)
+// Legacy DeliveryAck structures are no longer used; delivery status flows via Noise payloads.
 
 // MARK: - Read Receipts
 
@@ -359,7 +361,7 @@ struct ReadReceipt: Codable {
 }
 
 
-//
+// PeerIdentityBinding removed (unused).
 
 
 // MARK: - Delivery Status

bitchat/Services/AutocompleteService.swift

@@ -14,7 +14,7 @@ class AutocompleteService {
     private let commandRegex = try? NSRegularExpression(pattern: "^/([a-z]*)$", options: [])
     
     private let commands = [
-        "/msg", "/who", "/clear",
+        "/msg", "/who", "/clear", "/help",
         "/hug", "/slap", "/fav", "/unfav",
         "/block", "/unblock"
     ]
@@ -95,10 +95,10 @@ class AutocompleteService {
     
     private func needsArgument(command: String) -> Bool {
         switch command {
-        case "/who", "/clear":
+        case "/who", "/clear", "/help":
             return false
         default:
             return true
         }
     }
-}
+}

bitchat/Services/BLEService.swift

@@ -112,16 +112,6 @@ final class BLEService: NSObject {
     private var scheduledRelays: [String: DispatchWorkItem] = [:]
     // Track short-lived traffic bursts to adapt announces/scanning under load
     private var recentPacketTimestamps: [Date] = []
-
-    // Ingress link tracking for last-hop suppression
-    private enum LinkID: Hashable {
-        case peripheral(String)
-        case central(String)
-    }
-    private var ingressByMessageID: [String: (link: LinkID, timestamp: Date)] = [:]
-
-    // Backpressure-aware write queue per peripheral
-    private var pendingPeripheralWrites: [String: [Data]] = [:]
     
     // MARK: - Maintenance Timer
     
@@ -166,88 +156,6 @@ final class BLEService: NSObject {
             return bleQueue.sync { (self.subscribedCentrals, self.centralToPeerID) }
         }
     }
-
-    // MARK: - Helpers: IDs, selection, and write backpressure
-    private func makeMessageID(for packet: BitchatPacket) -> String {
-        let senderID = packet.senderID.hexEncodedString()
-        return "\(senderID)-\(packet.timestamp)-\(packet.type)"
-    }
-
-    private func subsetSizeForFanout(_ n: Int) -> Int {
-        guard n > 0 else { return 0 }
-        if n <= 2 { return n }
-        // approx ceil(log2(n)) + 1 without floating point
-        var v = n - 1
-        var bits = 0
-        while v > 0 { v >>= 1; bits += 1 }
-        return min(n, max(1, bits + 1))
-    }
-
-    private func selectDeterministicSubset(ids: [String], k: Int, seed: String) -> Set<String> {
-        guard k > 0 && ids.count > k else { return Set(ids) }
-        // Stable order by SHA256(seed || "::" || id)
-        var scored: [(score: [UInt8], id: String)] = []
-        for id in ids {
-            let msg = (seed + "::" + id).data(using: .utf8) ?? Data()
-            let digest = Array(SHA256.hash(data: msg))
-            scored.append((digest, id))
-        }
-        scored.sort { a, b in
-            for i in 0..<min(a.score.count, b.score.count) {
-                if a.score[i] != b.score[i] { return a.score[i] < b.score[i] }
-            }
-            return a.id < b.id
-        }
-        return Set(scored.prefix(k).map { $0.id })
-    }
-
-    private func writeOrEnqueue(_ data: Data, to peripheral: CBPeripheral, characteristic: CBCharacteristic) {
-        // BLE operations run on bleQueue; keep queue affinity
-        bleQueue.async { [weak self] in
-            guard let self = self else { return }
-            let uuid = peripheral.identifier.uuidString
-            if peripheral.canSendWriteWithoutResponse {
-                peripheral.writeValue(data, for: characteristic, type: .withoutResponse)
-            } else {
-                self.collectionsQueue.async(flags: .barrier) {
-                    self.pendingPeripheralWrites[uuid, default: []].append(data)
-                }
-            }
-        }
-    }
-
-    private func drainPendingWrites(for peripheral: CBPeripheral) {
-        let uuid = peripheral.identifier.uuidString
-        bleQueue.async { [weak self] in
-            guard let self = self else { return }
-            guard let state = self.peripherals[uuid], let ch = state.characteristic else { return }
-            var queueCopy: [Data] = []
-            self.collectionsQueue.sync {
-                queueCopy = self.pendingPeripheralWrites[uuid] ?? []
-            }
-            guard !queueCopy.isEmpty else { return }
-            var sent = 0
-            for item in queueCopy {
-                if peripheral.canSendWriteWithoutResponse {
-                    peripheral.writeValue(item, for: ch, type: .withoutResponse)
-                    sent += 1
-                } else {
-                    break
-                }
-            }
-            if sent > 0 {
-                self.collectionsQueue.async(flags: .barrier) {
-                    var q = self.pendingPeripheralWrites[uuid] ?? []
-                    if sent <= q.count {
-                        q.removeFirst(sent)
-                    } else {
-                        q.removeAll()
-                    }
-                    self.pendingPeripheralWrites[uuid] = q.isEmpty ? nil : q
-                }
-            }
-        }
-    }
     
     // MARK: - Peer snapshots publisher (non-UI convenience)
     private let peerSnapshotSubject = PassthroughSubject<[TransportPeerSnapshot], Never>()
@@ -461,7 +369,7 @@ final class BLEService: NSObject {
             // Send to peripherals we're connected to as central
             for state in peripherals.values where state.isConnected {
                 if let characteristic = state.characteristic {
-                    writeOrEnqueue(data, to: state.peripheral, characteristic: characteristic)
+                    state.peripheral.writeValue(data, for: characteristic, type: .withoutResponse)
                 }
             }
             
@@ -730,7 +638,7 @@ final class BLEService: NSObject {
         }
     }
     
-    //
+    // Removed unused getPeers(): use getPeerNicknames() from Transport
     
     // MARK: - Private Message Handling
     
@@ -969,7 +877,7 @@ final class BLEService: NSObject {
            let state = (DispatchQueue.getSpecific(key: bleQueueKey) != nil) ? peripherals[peripheralUUID] : bleQueue.sync(execute: { peripherals[peripheralUUID] }),
            state.isConnected,
            let characteristic = state.characteristic {
-            writeOrEnqueue(data, to: state.peripheral, characteristic: characteristic)
+            state.peripheral.writeValue(data, for: characteristic, type: .withoutResponse)
             sentEncrypted = true
         }
 
@@ -1000,10 +908,6 @@ final class BLEService: NSObject {
     }
 
     private func sendOnAllLinks(packet: BitchatPacket, data: Data, pad: Bool, directedOnlyPeer: String?) {
-        // Determine last-hop link for this message to avoid echoing back
-        let messageID = makeMessageID(for: packet)
-        let ingressLink: LinkID? = collectionsQueue.sync { ingressByMessageID[messageID]?.link }
-
         let states = snapshotPeripheralStates()
         var minCentralWriteLen: Int?
         for s in states where s.isConnected {
@@ -1028,54 +932,15 @@ final class BLEService: NSObject {
             sendFragmentedPacket(packet, pad: pad, maxChunk: chunk, directedOnlyPeer: directedOnlyPeer)
             return
         }
-        // Build link lists and apply K-of-N fanout for broadcasts; always exclude ingress link
-        let connectedPeripheralIDs: [String] = states.filter { $0.isConnected }.map { $0.peripheral.identifier.uuidString }
-        let subscribedCentrals: [CBCentral]
-        var centralIDs: [String] = []
-        if let _ = characteristic {
-            let (centrals, _) = snapshotSubscribedCentrals()
-            subscribedCentrals = centrals
-            centralIDs = centrals.map { $0.identifier.uuidString }
-        } else {
-            subscribedCentrals = []
-        }
-
-        // Exclude ingress link
-        var allowedPeripheralIDs = connectedPeripheralIDs
-        var allowedCentralIDs = centralIDs
-        if let ingress = ingressLink {
-            switch ingress {
-            case .peripheral(let id):
-                allowedPeripheralIDs.removeAll { $0 == id }
-            case .central(let id):
-                allowedCentralIDs.removeAll { $0 == id }
-            }
-        }
-
-        // For broadcast (no directed peer) and non-fragment, choose a subset deterministically
-        var selectedPeripheralIDs = Set(allowedPeripheralIDs)
-        var selectedCentralIDs = Set(allowedCentralIDs)
-        if directedOnlyPeer == nil && packet.type != MessageType.fragment.rawValue {
-            let kp = subsetSizeForFanout(allowedPeripheralIDs.count)
-            let kc = subsetSizeForFanout(allowedCentralIDs.count)
-            selectedPeripheralIDs = selectDeterministicSubset(ids: allowedPeripheralIDs, k: kp, seed: messageID)
-            selectedCentralIDs = selectDeterministicSubset(ids: allowedCentralIDs, k: kc, seed: messageID)
-        }
-
-        // Writes to selected connected peripherals
+        // Writes to connected peripherals
         for s in states where s.isConnected {
-            let pid = s.peripheral.identifier.uuidString
-            guard selectedPeripheralIDs.contains(pid) else { continue }
             if let ch = s.characteristic {
-                writeOrEnqueue(data, to: s.peripheral, characteristic: ch)
+                s.peripheral.writeValue(data, for: ch, type: .withoutResponse)
             }
         }
-        // Notify selected subscribed centrals
+        // Notify all subscribed centrals
         if let ch = characteristic {
-            let targets = subscribedCentrals.filter { selectedCentralIDs.contains($0.identifier.uuidString) }
-            if !targets.isEmpty {
-                _ = peripheralManager?.updateValue(data, for: ch, onSubscribedCentrals: targets)
-            }
+            _ = peripheralManager?.updateValue(data, for: ch, onSubscribedCentrals: nil)
         }
     }
     
@@ -1089,7 +954,7 @@ final class BLEService: NSObject {
         
         // Fire-and-forget principle: always use .withoutResponse for speed
         // CoreBluetooth will handle fragmentation at L2CAP layer
-        writeOrEnqueue(data, to: peripheral, characteristic: characteristic)
+        peripheral.writeValue(data, for: characteristic, type: .withoutResponse)
     }
     
     // MARK: - Fragmentation (Required for messages > BLE MTU)
@@ -1297,7 +1162,6 @@ final class BLEService: NSObject {
                 ttl: packet.ttl,
                 senderIsSelf: senderID == myPeerID,
                 isEncrypted: packet.type == MessageType.noiseEncrypted.rawValue,
-                isDirectedEncrypted: (packet.type == MessageType.noiseEncrypted.rawValue) && (packet.recipientID != nil),
                 isDirectedFragment: packet.type == MessageType.fragment.rawValue && packet.recipientID != nil,
                 isHandshake: packet.type == MessageType.noiseHandshake.rawValue,
                 degree: degree,
@@ -1863,15 +1727,6 @@ final class BLEService: NSObject {
                 }
             }
         }
-
-        // Clean ingress link records older than 3 seconds
-        collectionsQueue.async(flags: .barrier) { [weak self] in
-            guard let self = self else { return }
-            let cutoff = now.addingTimeInterval(-3)
-            if !self.ingressByMessageID.isEmpty {
-                self.ingressByMessageID = self.ingressByMessageID.filter { $0.value.timestamp >= cutoff }
-            }
-        }
     }
 
     private func updateScanningDutyCycle(connectedCount: Int) {
@@ -2262,27 +2117,6 @@ extension BLEService {
 // Test-only helper to inject packets into the receive pipeline
 extension BLEService {
     func _test_handlePacket(_ packet: BitchatPacket, fromPeerID: String) {
-        // Ensure the synthetic peer is known and marked verified for public-message tests
-        let normalizedID = packet.senderID.hexEncodedString()
-        collectionsQueue.sync(flags: .barrier) {
-            if peers[normalizedID] == nil {
-                peers[normalizedID] = PeerInfo(
-                    id: normalizedID,
-                    nickname: "TestPeer_\(fromPeerID.prefix(4))",
-                    isConnected: true,
-                    noisePublicKey: packet.senderID,
-                    signingPublicKey: nil,
-                    isVerifiedNickname: true,
-                    lastSeen: Date()
-                )
-            } else {
-                var p = peers[normalizedID]!
-                p.isConnected = true
-                p.isVerifiedNickname = true
-                p.lastSeen = Date()
-                peers[normalizedID] = p
-            }
-        }
         if DispatchQueue.getSpecific(key: messageQueueKey) != nil {
             handleReceivedPacket(packet, from: fromPeerID)
         } else {
@@ -2411,22 +2245,12 @@ extension BLEService: CBPeripheralDelegate {
                 peerToPeripheralUUID[senderID] = peripheralUUID
                 // Mapping update - direct announce from peer
             }
-            // Record ingress link for last-hop suppression and process
-            let msgID = makeMessageID(for: packet)
-            collectionsQueue.async(flags: .barrier) { [weak self] in
-                self?.ingressByMessageID[msgID] = (.peripheral(peripheralUUID), Date())
-            }
             // Process the announce packet regardless of whether we updated the mapping
             handleReceivedPacket(packet, from: senderID)
         } else {
             // For non-announce packets, DO NOT update mappings
             // These could be relayed packets from other peers
             // Always use the packet's original senderID
-            // Record ingress link for last-hop suppression and process
-            let msgID = makeMessageID(for: packet)
-            collectionsQueue.async(flags: .barrier) { [weak self] in
-                self?.ingressByMessageID[msgID] = (.peripheral(peripheralUUID), Date())
-            }
             handleReceivedPacket(packet, from: senderID)
         }
     }
@@ -2441,8 +2265,7 @@ extension BLEService: CBPeripheralDelegate {
     }
     
     func peripheralIsReady(toSendWriteWithoutResponse peripheral: CBPeripheral) {
-        // Resume queued writes for this peripheral
-        drainPendingWrites(for: peripheral)
+        // Suppress verbose ready logs
     }
     
     func peripheral(_ peripheral: CBPeripheral, didModifyServices invalidatedServices: [CBService]) {
@@ -2666,18 +2489,8 @@ extension BLEService: CBPeripheralManagerDelegate {
                 }
                 if packet.type == MessageType.announce.rawValue {
                     if packet.ttl == messageTTL { centralToPeerID[centralUUID] = senderID }
-                    // Record ingress link for last-hop suppression then process
-                    let msgID = makeMessageID(for: packet)
-                    collectionsQueue.async(flags: .barrier) { [weak self] in
-                        self?.ingressByMessageID[msgID] = (.central(centralUUID), Date())
-                    }
                     handleReceivedPacket(packet, from: senderID)
                 } else {
-                    // Record ingress link for last-hop suppression then process
-                    let msgID = makeMessageID(for: packet)
-                    collectionsQueue.async(flags: .barrier) { [weak self] in
-                        self?.ingressByMessageID[msgID] = (.central(centralUUID), Date())
-                    }
                     handleReceivedPacket(packet, from: senderID)
                 }
             } else {

bitchat/Services/CommandProcessor.swift

@@ -33,15 +33,6 @@ class CommandProcessor {
         guard let cmd = parts.first else { return .error(message: "Invalid command") }
         let args = parts.count > 1 ? String(parts[1]) : ""
         
-        // Geohash context: disable favoriting in public geohash or GeoDM
-        let inGeoPublic: Bool = {
-            switch LocationChannelManager.shared.selectedChannel {
-            case .mesh: return false
-            case .location: return true
-            }
-        }()
-        let inGeoDM = (chatViewModel?.selectedPrivateChatPeer?.hasPrefix("nostr_") == true)
-
         switch cmd {
         case "/m", "/msg":
             return handleMessage(args)
@@ -58,14 +49,11 @@ class CommandProcessor {
         case "/unblock":
             return handleUnblock(args)
         case "/fav":
-            if inGeoPublic || inGeoDM { return .error(message: "favorites are only for mesh peers in #mesh") }
             return handleFavorite(args, add: true)
         case "/unfav":
-            if inGeoPublic || inGeoDM { return .error(message: "favorites are only for mesh peers in #mesh") }
             return handleFavorite(args, add: false)
-        //
         case "/help", "/h":
-            return .error(message: "unknown command: \(cmd)")
+            return handleHelp()
         default:
             return .error(message: "unknown command: \(cmd)")
         }
@@ -97,34 +85,19 @@ class CommandProcessor {
     }
     
     private func handleWho() -> CommandResult {
-        // Show geohash participants when in a geohash channel; otherwise mesh peers
-        switch LocationChannelManager.shared.selectedChannel {
-        case .location(let ch):
-            // Geohash context: show visible geohash participants (exclude self)
-            guard let vm = chatViewModel else { return .success(message: "nobody around") }
-            let myHex = (try? NostrIdentityBridge.deriveIdentity(forGeohash: ch.geohash))?.publicKeyHex.lowercased()
-            let people = vm.visibleGeohashPeople().filter { person in
-                if let me = myHex { return person.id.lowercased() != me }
-                return true
-            }
-            let names = people.map { $0.displayName }
-            if names.isEmpty { return .success(message: "no one else is online right now") }
-            return .success(message: "online: " + names.sorted().joined(separator: ", "))
-        case .mesh:
-            // Mesh context: show connected peer nicknames
-            guard let peers = meshService?.getPeerNicknames(), !peers.isEmpty else {
-                return .success(message: "no one else is online right now")
-            }
-            let onlineList = peers.values.sorted().joined(separator: ", ")
-            return .success(message: "online: \(onlineList)")
+        guard let peers = meshService?.getPeerNicknames(), !peers.isEmpty else {
+            return .success(message: "no one else is online right now")
         }
+        
+        let onlineList = peers.values.sorted().joined(separator: ", ")
+        return .success(message: "online: \(onlineList)")
     }
     
     private func handleClear() -> CommandResult {
         if let peerID = chatViewModel?.selectedPrivateChatPeer {
             chatViewModel?.privateChats[peerID]?.removeAll()
         } else {
-            chatViewModel?.clearCurrentPublicTimeline()
+            chatViewModel?.messages.removeAll()
         }
         return .handled
     }
@@ -192,8 +165,12 @@ class CommandProcessor {
             let geoBlocked = Array(SecureIdentityStateManager.shared.getBlockedNostrPubkeys())
             var geoNames: [String] = []
             if let vm = chatViewModel {
+                #if os(iOS)
                 let visible = vm.visibleGeohashPeople()
                 let visibleIndex = Dictionary(uniqueKeysWithValues: visible.map { ($0.id.lowercased(), $0.displayName) })
+                #else
+                let visibleIndex: [String: String] = [:]
+                #endif
                 for pk in geoBlocked {
                     if let name = visibleIndex[pk.lowercased()] {
                         geoNames.append(name)

bitchat/Services/LocationChannelManager.swift

@@ -1,8 +1,8 @@
 import Foundation
-import Combine
 
-#if os(iOS) || os(macOS)
+#if os(iOS)
 import CoreLocation
+import Combine
 
 /// Manages location permissions, one-shot location retrieval, and computing geohash channels.
 /// Not main-actor isolated to satisfy CLLocationManagerDelegate in Swift 6; state updates hop to MainActor.
@@ -55,7 +55,7 @@ final class LocationChannelManager: NSObject, CLLocationManagerDelegate, Observa
             teleported = teleportedSet.contains(ch.geohash)
         }
         let status: CLAuthorizationStatus
-        if #available(iOS 14.0, macOS 11.0, *) {
+        if #available(iOS 14.0, *) {
             status = cl.authorizationStatus
         } else {
             status = CLLocationManager.authorizationStatus()
@@ -66,7 +66,7 @@ final class LocationChannelManager: NSObject, CLLocationManagerDelegate, Observa
     // MARK: - Public API
     func enableLocationChannels() {
         let status: CLAuthorizationStatus
-        if #available(iOS 14.0, macOS 11.0, *) {
+        if #available(iOS 14.0, *) {
             status = cl.authorizationStatus
         } else {
             status = CLLocationManager.authorizationStatus()
@@ -78,7 +78,7 @@ final class LocationChannelManager: NSObject, CLLocationManagerDelegate, Observa
             Task { @MainActor in self.permissionState = .restricted }
         case .denied:
             Task { @MainActor in self.permissionState = .denied }
-        case .authorizedAlways, .authorizedWhenInUse, .authorized:
+        case .authorizedAlways, .authorizedWhenInUse:
             Task { @MainActor in self.permissionState = .authorized }
             requestOneShotLocation()
         @unknown default:
@@ -151,8 +151,8 @@ final class LocationChannelManager: NSObject, CLLocationManagerDelegate, Observa
         }
     }
 
-    // iOS 14+ / macOS 11+
-    @available(iOS 14.0, macOS 11.0, *)
+    // iOS 14+
+    @available(iOS 14.0, *)
     func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
         updatePermissionState(from: manager.authorizationStatus)
         if case .authorized = permissionState {
@@ -180,7 +180,7 @@ final class LocationChannelManager: NSObject, CLLocationManagerDelegate, Observa
         case .notDetermined: newState = .notDetermined
         case .restricted: newState = .restricted
         case .denied: newState = .denied
-        case .authorizedAlways, .authorizedWhenInUse, .authorized: newState = .authorized
+        case .authorizedAlways, .authorizedWhenInUse: newState = .authorized
         @unknown default: newState = .restricted
         }
         Task { @MainActor in self.permissionState = newState }
@@ -256,4 +256,5 @@ final class LocationChannelManager: NSObject, CLLocationManagerDelegate, Observa
         return dict
     }
 }
+
 #endif

bitchat/Services/RelayController.swift

@@ -12,7 +12,6 @@ struct RelayController {
     static func decide(ttl: UInt8,
                        senderIsSelf: Bool,
                        isEncrypted: Bool,
-                       isDirectedEncrypted: Bool,
                        isDirectedFragment: Bool,
                        isHandshake: Bool,
                        degree: Int,
@@ -20,17 +19,7 @@ struct RelayController {
         // Suppress obvious non-relays
         if ttl <= 1 || senderIsSelf { return RelayDecision(shouldRelay: false, newTTL: ttl, delayMs: 0) }
 
-        // For session-critical or directed traffic, be deterministic and reliable
-        if isHandshake || isDirectedFragment || isDirectedEncrypted {
-            // Always relay with no TTL cap for these types
-            let newTTL = (ttl &- 1)
-            // Slight jitter to desynchronize without adding too much latency
-            let delayRange: ClosedRange<Int> = isHandshake ? 20...60 : 40...120
-            let delayMs = Int.random(in: delayRange)
-            return RelayDecision(shouldRelay: true, newTTL: newTTL, delayMs: delayMs)
-        }
-
-        // Degree-aware probability to reduce floods in dense graphs (broadcast/public)
+        // Degree-aware probability to reduce floods in dense graphs
         let baseProb: Double
         switch degree {
         case 0...2: baseProb = 1.0
@@ -39,22 +28,20 @@ struct RelayController {
         case 7...9: baseProb = 0.55
         default:    baseProb = 0.45
         }
-        let prob = baseProb
+        var prob = baseProb
+        if isHandshake { prob = max(0.3, baseProb - 0.2) }
+
+        // Sample a forwarding decision
         let shouldRelay = Double.random(in: 0...1) <= prob
 
-        // TTL clamping in dense graphs (only for broadcast)
+        // TTL clamping in dense graphs
         let ttlCap: UInt8 = degree >= highDegreeThreshold ? 3 : 5
         let clamped = max(1, min(ttl, ttlCap))
         let newTTL = clamped &- 1
 
-        // Wider jitter window to allow duplicate suppression to win more often
-        let delayMs: Int
-        switch degree {
-        case 0...2: delayMs = Int.random(in: 40...100)
-        case 3...5: delayMs = Int.random(in: 60...150)
-        case 6...9: delayMs = Int.random(in: 80...180)
-        default:    delayMs = Int.random(in: 100...220)
-        }
+        // Short jitter to desynchronize rebroadcasts
+        let delayMs = Int.random(in: 20...80)
         return RelayDecision(shouldRelay: shouldRelay, newTTL: newTTL, delayMs: delayMs)
     }
 }
+

bitchat/Utils/InputValidator.swift

@@ -18,18 +18,14 @@ struct InputValidator {
     
     /// Validates a peer ID from any source (short 16-hex, full 64-hex, or internal alnum/-/_ up to 64)
     static func validatePeerID(_ peerID: String) -> Bool {
-        // Accept short routing IDs (exact 16-hex)
+        // Accept short routing IDs (16-hex)
         if PeerIDResolver.isShortID(peerID) { return true }
-        // If length equals short-hex length but isn't valid hex, reject
-        if peerID.count == Limits.hexPeerIDLength { return false }
-        // Accept full Noise key hex (exact 64-hex)
+        // Accept full Noise key hex (64-hex)
         if PeerIDResolver.isNoiseKeyHex(peerID) { return true }
-        // If length equals full key length but isn't valid hex, reject
-        if peerID.count == Limits.maxPeerIDLength { return false }
-        // Internal format: alphanumeric + dash/underscore up to 63 (not 16 or 64)
+        // Internal format: alphanumeric + dash/underscore up to 64
         let validCharset = CharacterSet.alphanumerics.union(CharacterSet(charactersIn: "-_"))
         return !peerID.isEmpty &&
-               peerID.count < Limits.maxPeerIDLength &&
+               peerID.count <= Limits.maxPeerIDLength &&
                peerID.rangeOfCharacter(from: validCharset.inverted) == nil
     }
     

bitchat/ViewModels/ChatViewModel.swift

@@ -297,7 +297,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         }
     }
     
-    //
+    // Missing properties that were removed during refactoring
     private var peerIDToPublicKeyFingerprint: [String: String] = [:]
     private var selectedPrivateChatFingerprint: String? = nil
     // Map stable short peer IDs (16-hex) to full Noise public key hex (64-hex) for session continuity
@@ -352,12 +352,14 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
     private let maxProcessedNostrEvents = 2000
     private let userDefaults = UserDefaults.standard
     private let nicknameKey = "bitchat.nickname"
-    // Location channel state (macOS supports manual geohash selection)
+    // Location channel state
+    #if os(iOS)
     @Published private var activeChannel: ChannelID = .mesh
     private var geoSubscriptionID: String? = nil
     private var geoDmSubscriptionID: String? = nil
     private var currentGeohash: String? = nil
     private var geoNicknames: [String: String] = [:] // pubkeyHex(lowercased) -> nickname
+    #endif
     
     // MARK: - Caches
     
@@ -387,6 +389,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
     // Persist mesh public timeline across channel switches
     private var meshTimeline: [BitchatMessage] = []
     private let meshTimelineCap = 1337
+    #if os(iOS)
     // Persist per-geohash public timelines across switches
     private var geoTimelines: [String: [BitchatMessage]] = [:] // geohash -> messages
     private let geoTimelineCap = 1337
@@ -402,6 +405,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
     @Published private(set) var teleportedGeo: Set<String> = []  // lowercased pubkey hex
     // Sampling subscriptions for multiple geohashes (when channel sheet is open)
     private var geoSamplingSubs: [String: String] = [:] // subID -> geohash
+    #endif
     
     // MARK: - Message Delivery Tracking
     
@@ -588,7 +592,8 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             
             self.cancellables.insert(cancellable)
 
-            // Resubscribe geohash on relay reconnect
+            // Resubscribe geohash on relay reconnect (iOS only)
+            #if os(iOS)
             if let relayMgr = self.nostrRelayManager {
                 relayMgr.$isConnected
                     .receive(on: DispatchQueue.main)
@@ -602,11 +607,13 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                     }
                     .store(in: &self.cancellables)
             }
+            #endif
         }
 
         // Set up Noise encryption callbacks
         setupNoiseCallbacks()
 
+        #if os(iOS)
         // Observe location channel selection
         LocationChannelManager.shared.$selectedChannel
             .receive(on: DispatchQueue.main)
@@ -621,6 +628,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         Task { @MainActor in
             self.switchLocationChannel(to: LocationChannelManager.shared.selectedChannel)
         }
+        #endif
         
         // Request notification permission
         NotificationService.shared.requestAuthorization()
@@ -706,7 +714,8 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         // Force immediate save
         userDefaults.synchronize()
     }
-    
+
+    #if os(iOS)
     // Resubscribe to the active geohash channel without clearing timeline
     @MainActor
     private func resubscribeCurrentGeohash() {
@@ -888,6 +897,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             }
         } catch { }
     }
+    #endif
 
     // MARK: - Nickname Management
     
@@ -1215,6 +1225,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             let mentions = parseMentions(from: content)
             
             // Add message to local display
+            #if os(iOS)
             var displaySender = nickname
             var localSenderPeerID = meshService.myPeerID
             if case .location(let ch) = activeChannel,
@@ -1223,6 +1234,10 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                 displaySender = nickname + "#" + suffix
                 localSenderPeerID = "nostr:\(myGeoIdentity.publicKeyHex.prefix(8))"
             }
+            #else
+            let displaySender = nickname
+            let localSenderPeerID = meshService.myPeerID
+            #endif
 
             let message = BitchatMessage(
                 sender: displaySender,
@@ -1242,6 +1257,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             let ckey = normalizedContentKey(message.content)
             recordContentKey(ckey, timestamp: message.timestamp)
             // Persist to channel-specific timelines
+            #if os(iOS)
             switch activeChannel {
             case .mesh:
                 meshTimeline.append(message)
@@ -1252,19 +1268,26 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                 if arr.count > geoTimelineCap { arr = Array(arr.suffix(geoTimelineCap)) }
                 geoTimelines[ch.geohash] = arr
             }
+            #else
+            meshTimeline.append(message)
+            trimMeshTimelineIfNeeded()
+            #endif
             trimMessagesIfNeeded()
             
             // Force immediate UI update for user's own messages
             objectWillChange.send()
 
             // Update channel activity time on send
+            #if os(iOS)
             switch activeChannel {
             case .mesh:
                 lastPublicActivityAt["mesh"] = Date()
             case .location(let ch):
                 lastPublicActivityAt["geo:\(ch.geohash)"] = Date()
             }
+            #endif
             
+            #if os(iOS)
             if case .location(let ch) = activeChannel {
                 // Send to geohash channel via Nostr ephemeral
                 Task { @MainActor in
@@ -1303,10 +1326,14 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                 // Send via mesh with mentions
                 meshService.sendMessage(content, mentions: mentions)
             }
-            
+            #else
+            // Send via mesh with mentions (non-iOS)
+            meshService.sendMessage(content, mentions: mentions)
+            #endif
         }
     }
 
+    #if os(iOS)
     @MainActor
     private func switchLocationChannel(to channel: ChannelID) {
         // Flush pending public buffer to avoid cross-channel bleed
@@ -1349,12 +1376,14 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         // Ensure self appears immediately in the people list; mark teleported state if applicable
         if let id = try? NostrIdentityBridge.deriveIdentity(forGeohash: ch.geohash) {
             self.recordGeoParticipant(pubkeyHex: id.publicKeyHex)
+            #if os(iOS)
             if LocationChannelManager.shared.teleported {
                 let key = id.publicKeyHex.lowercased()
                 teleportedGeo = teleportedGeo.union([key])
                 SecureLogger.log("GeoTeleport: channel switch mark self teleported key=\(key.prefix(8))… total=\(teleportedGeo.count)",
                                 category: SecureLogger.session, level: .info)
             }
+            #endif
         }
         let subID = "geo-\(ch.geohash)"
         geoSubscriptionID = subID
@@ -1561,10 +1590,11 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         } catch {
             // ignore
         }
-        //
+        // Presence announcement removed; we will tag actual chat events instead
     }
 
-    // MARK: - Geohash Participants
+    // MARK: - Geohash Participants (iOS)
+    #if os(iOS)
     struct GeoPerson: Identifiable, Equatable {
         let id: String        // pubkey hex (lowercased)
         let displayName: String
@@ -1622,8 +1652,10 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         geoParticipantsTimer?.invalidate()
         geoParticipantsTimer = nil
     }
-    
-    // MARK: - Public helpers
+    #endif
+
+    // MARK: - Public helpers (iOS)
+    #if os(iOS)
     /// Return the current, pruned, sorted people list for the active geohash without mutating state.
     @MainActor
     func visibleGeohashPeople() -> [GeoPerson] {
@@ -1714,7 +1746,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         let toAdd = desired.subtracting(current)
         let toRemove = current.subtracting(desired)
 
-        //
+        // Unsubscribe removed
         for (subID, gh) in geoSamplingSubs where toRemove.contains(gh) {
             NostrRelayManager.shared.unsubscribe(id: subID)
             geoSamplingSubs.removeValue(forKey: subID)
@@ -1741,6 +1773,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         for subID in geoSamplingSubs.keys { NostrRelayManager.shared.unsubscribe(id: subID) }
         geoSamplingSubs.removeAll()
     }
+    #endif
 
     private func displayNameForNostrPubkey(_ pubkeyHex: String) -> String {
         let suffix = String(pubkeyHex.suffix(4))
@@ -1760,12 +1793,16 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
 
     // Helper: display name for current active channel (for notifications)
     private func activeChannelDisplayName() -> String {
+        #if os(iOS)
         switch activeChannel {
         case .mesh:
             return "#mesh"
         case .location(let ch):
             return "#\(ch.geohash)"
         }
+        #else
+        return "#mesh"
+        #endif
     }
 
     // Dedup helper with small memory cap
@@ -1782,6 +1819,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             }
         }
     }
+    #endif
     
     /// Sends an encrypted private message to a specific peer.
     /// - Parameters:
@@ -1793,6 +1831,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         guard !content.isEmpty else { return }
         
         // Geohash DM routing: conversation keys start with "nostr_"
+        #if os(iOS)
         if peerID.hasPrefix("nostr_") {
             guard case .location(let ch) = activeChannel else {
                 addSystemMessage("cannot send: not in a location channel")
@@ -1858,6 +1897,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             }
             return
         }
+        #endif
 
         // Check if blocked
         if unifiedPeerService.isBlocked(peerID) {
@@ -1924,6 +1964,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         }
     }
 
+    #if os(iOS)
     // MARK: - Geohash DMs initiation
     @MainActor
     func startGeohashDM(withPubkeyHex hex: String) {
@@ -1949,6 +1990,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         }
         return "anon#\(suffix)"
     }
+    #endif
     /// Add a local system message to a private chat (no network send)
     @MainActor
     func addLocalPrivateSystemMessage(_ content: String, to peerID: String) {
@@ -2402,7 +2444,9 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             }
         }
         // Also resubscribe the current geohash channel if active
+        #if os(iOS)
         resubscribeCurrentGeohash()
+        #endif
     }
     
     @MainActor
@@ -2447,6 +2491,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             
         } else {
             // In public chat - send to active public channel
+            #if os(iOS)
             switch activeChannel {
             case .mesh:
                 meshService.sendMessage(screenshotMessage, mentions: [])
@@ -2480,7 +2525,9 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                     }
                 }
             }
-            
+            #else
+            meshService.sendMessage(screenshotMessage, mentions: [])
+            #endif
 
             // Show local notification immediately as system message
             let localNotification = BitchatMessage(
@@ -2560,6 +2607,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         privateChatManager.markAsRead(from: peerID)
         
         // Handle GeoDM (nostr_*) read receipts directly via per-geohash identity
+        #if os(iOS)
         if peerID.hasPrefix("nostr_"),
            let recipientHex = nostrKeyMapping[peerID],
            case .location(let ch) = LocationChannelManager.shared.selectedChannel,
@@ -2577,6 +2625,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             }
             return
         }
+        #endif
 
         // Get the peer's Noise key to check for Nostr messages
         var noiseKeyHex: String? = nil
@@ -2673,6 +2722,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
     
     @MainActor
     func getPeerIDForNickname(_ nickname: String) -> String? {
+        #if os(iOS)
         // When in a geohash channel, allow resolving by geohash participant nickname
         switch LocationChannelManager.shared.selectedChannel {
         case .location:
@@ -2686,10 +2736,9 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                 nostrKeyMapping[convKey] = pub
                 return convKey
             }
-        default:
-            break
+        default: break
         }
-        // Fallback to mesh nickname resolution
+        #endif
         return unifiedPeerService.getPeerID(for: nickname)
     }
     
@@ -2797,6 +2846,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
     func updateAutocomplete(for text: String, cursorPosition: Int) {
         // Build candidate list based on active channel
         let peerCandidates: [String] = {
+            #if os(iOS)
             switch activeChannel {
             case .mesh:
                 let values = meshService.getPeerNicknames().values
@@ -2815,6 +2865,10 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                 }
                 return Array(tokens)
             }
+            #else
+            let values = meshService.getPeerNicknames().values
+            return Array(values.filter { $0 != meshService.myNickname })
+            #endif
         }()
 
         let (suggestions, range) = autocompleteService.getSuggestions(
@@ -2935,12 +2989,13 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         // Determine if this message was sent by self (mesh, geo, or DM)
         let isSelf: Bool = {
             if let spid = message.senderPeerID {
-                // In geohash channels, compare against our per-geohash nostr short ID
+                #if os(iOS)
                 if case .location(let ch) = activeChannel, spid.hasPrefix("nostr:") {
                     if let myGeo = try? NostrIdentityBridge.deriveIdentity(forGeohash: ch.geohash) {
                         return spid == "nostr:\(myGeo.publicKeyHex.prefix(8))"
                     }
                 }
+                #endif
                 return spid == meshService.myPeerID
             }
             // Fallback by nickname
@@ -3091,9 +3146,11 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                         let (mBase, mSuffix) = splitSuffix(from: matchText.replacingOccurrences(of: "@", with: ""))
                         // Determine if this mention targets me (resolves with optional suffix per active channel)
                         let mySuffix: String? = {
+                            #if os(iOS)
                             if case .location(let ch) = activeChannel, let id = try? NostrIdentityBridge.deriveIdentity(forGeohash: ch.geohash) {
                                 return String(id.publicKeyHex.suffix(4))
                             }
+                            #endif
                             return String(meshService.myPeerID.prefix(4))
                         }()
                         let isMentionToMe: Bool = {
@@ -3126,28 +3183,12 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                             let token = String(matchText.dropFirst()).lowercased()
                             let allowed = Set("0123456789bcdefghjkmnpqrstuvwxyz")
                             let isGeohash = (2...12).contains(token.count) && token.allSatisfy { allowed.contains($0) }
-                            // Do not link if this hashtag is directly attached to an @mention (e.g., @name#geohash)
-                            let attachedToMention: Bool = {
-                                // nsRange is the Range<String.Index> for this match within content
-                                // Walk left until whitespace/newline; if we encounter '@' first, treat as part of mention
-                                if nsRange.lowerBound > content.startIndex {
-                                    var i = content.index(before: nsRange.lowerBound)
-                                    while true {
-                                        let ch = content[i]
-                                        if ch.isWhitespace || ch.isNewline { break }
-                                        if ch == "@" { return true }
-                                        if i == content.startIndex { break }
-                                        i = content.index(before: i)
-                                    }
-                                }
-                                return false
-                            }()
                             var tagStyle = AttributeContainer()
                             tagStyle.font = isSelf
                                 ? .system(size: 14, weight: .bold, design: .monospaced)
                                 : .system(size: 14, design: .monospaced)
                             tagStyle.foregroundColor = baseColor
-                            if isGeohash && !attachedToMention, let url = URL(string: "bitchat://geohash/\(token)") {
+                            if isGeohash, let url = URL(string: "bitchat://geohash/\(token)") {
                                 tagStyle.link = url
                                 tagStyle.underlineStyle = .single
                             }
@@ -3545,6 +3586,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
     // Clear the current public channel's timeline (visible + persistent buffer)
     @MainActor
     func clearCurrentPublicTimeline() {
+        #if os(iOS)
         switch activeChannel {
         case .mesh:
             messages.removeAll()
@@ -3553,6 +3595,10 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             messages.removeAll()
             geoTimelines[ch.geohash] = []
         }
+        #else
+        messages.removeAll()
+        meshTimeline.removeAll()
+        #endif
     }
     
     private func trimPrivateChatMessagesIfNeeded(for peerID: String) {
@@ -3617,8 +3663,26 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         return unifiedPeerService.getFingerprint(for: peerID)
     }
     
-    //
-
+    private func getFingerprint_old(for peerID: String) -> String? {
+        // Remove debug logging to prevent console spam during view updates
+        
+        // First try to get fingerprint from mesh service's peer ID rotation mapping
+        if let fingerprint = meshService.getFingerprint(for: peerID) {
+            return fingerprint
+        }
+        
+        // Check noise service (direct Noise session fingerprint)
+        if let fingerprint = meshService.getNoiseService().getPeerFingerprint(peerID) {
+            return fingerprint
+        }
+        
+        // Last resort: check local mapping
+        if let fingerprint = peerIDToPublicKeyFingerprint[peerID] {
+            return fingerprint
+        }
+        
+        return nil
+    }
     
     // Helper to resolve nickname for a peer ID through various sources
     @MainActor
@@ -4016,7 +4080,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             messageRouter.flushOutbox(for: peerID)
         }
         
-        //
+        // Connection messages removed to reduce chat noise
     }
     
     func didDisconnectFromPeer(_ peerID: String) {
@@ -4083,7 +4147,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             }
         }
         
-        //
+        // Disconnection messages removed to reduce chat noise
     }
     
     func didUpdatePeerList(_ peers: [String]) {
@@ -4367,6 +4431,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
     // Used for emotes where we want a local system-style confirmation instead.
     @MainActor
     func sendPublicRaw(_ content: String) {
+        #if os(iOS)
         if case .location(let ch) = activeChannel {
             Task { @MainActor in
                 do {
@@ -4390,13 +4455,14 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             }
             return
         }
+        #endif
         // Default: send over mesh
         meshService.sendMessage(content, mentions: [])
     }
     
     // MARK: - Simplified Nostr Integration (Inlined from MessageRouter)
     
-    //
+    // Removed inlined Nostr send helpers in favor of MessageRouter
     
     @MainActor
     private func setupNostrMessageHandling() {
@@ -4727,7 +4793,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
         return Data(base64Encoded: str)
     }
     
-    //
+    // Removed local TLV decoder; using PrivateMessagePacket.decode from Protocols
     
     @MainActor
     private func handleFavoriteNotificationFromMesh(_ content: String, from peerID: String, senderNickname: String) {
@@ -4992,10 +5058,12 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
     // MARK: - Geohash Nickname Resolution (for /block in geohash)
     @MainActor
     func nostrPubkeyForDisplayName(_ name: String) -> String? {
-        // Look up current visible geohash participants for an exact displayName match
+        // Look up current visible geohash participants for an exact displayName match (iOS only)
+        #if os(iOS)
         for p in visibleGeohashPeople() {
             if p.displayName == name { return p.id }
         }
+        #endif
         return nil
     }
     
@@ -5297,7 +5365,8 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
             trimMeshTimelineIfNeeded()
         }
 
-        // Persist geochat messages to per-geohash timeline
+        // Persist geochat messages to per-geohash timeline (iOS-only)
+        #if os(iOS)
         if isGeo && finalMessage.sender != "system" {
             if let gh = currentGeohash {
                 var arr = geoTimelines[gh] ?? []
@@ -5306,14 +5375,20 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
                 geoTimelines[gh] = arr
             }
         }
+        #endif
 
         // Only add message to current timeline if it matches active channel or is system
         let isSystem = finalMessage.sender == "system"
         let channelMatches: Bool = {
+            #if os(iOS)
             switch activeChannel {
             case .mesh: return !isGeo || isSystem
             case .location: return isGeo || isSystem
             }
+            #else
+            // On non-iOS builds, we don't have location channels; accept all
+            return true
+            #endif
         }()
 
         guard channelMatches else { return }

bitchat/Views/ContentView.swift

@@ -13,9 +13,19 @@ import UIKit
 
 // MARK: - Supporting Types
 
-//
+// Pre-computed peer data for performance
+struct PeerDisplayData: Identifiable {
+    let id: String
+    let displayName: String
+    let isFavorite: Bool
+    let isMe: Bool
+    let hasUnreadMessages: Bool
+    let encryptionStatus: EncryptionStatus
+    let connectionState: BitchatPeer.ConnectionState
+    let isMutualFavorite: Bool
+}
 
-//
+// (Link previews removed; URLs are now clickable inline)
 
 // MARK: - Main Content View
 
@@ -23,7 +33,9 @@ struct ContentView: View {
     // MARK: - Properties
     
     @EnvironmentObject var viewModel: ChatViewModel
+    #if os(iOS)
     @ObservedObject private var locationManager = LocationChannelManager.shared
+    #endif
     @State private var messageText = ""
     @State private var textFieldSelection: NSRange? = nil
     @FocusState private var isTextFieldFocused: Bool
@@ -188,6 +200,7 @@ struct ContentView: View {
 
             Button("direct message") {
                 if let peerID = selectedMessageSenderID {
+                    #if os(iOS)
                     if peerID.hasPrefix("nostr:") {
                         if let full = viewModel.fullNostrHex(forSenderPeerID: peerID) {
                             viewModel.startGeohashDM(withPubkeyHex: full)
@@ -195,6 +208,9 @@ struct ContentView: View {
                     } else {
                         viewModel.startPrivateChat(with: peerID)
                     }
+                    #else
+                    viewModel.startPrivateChat(with: peerID)
+                    #endif
                     withAnimation(.easeInOut(duration: 0.2)) {
                         showSidebar = false
                         sidebarDragOffset = 0
@@ -216,6 +232,7 @@ struct ContentView: View {
             
             Button("BLOCK", role: .destructive) {
                 // Prefer direct geohash block when we have a Nostr sender ID
+                #if os(iOS)
                 if let peerID = selectedMessageSenderID, peerID.hasPrefix("nostr:"),
                    let full = viewModel.fullNostrHex(forSenderPeerID: peerID),
                    let sender = selectedMessageSender {
@@ -223,6 +240,9 @@ struct ContentView: View {
                 } else if let sender = selectedMessageSender {
                     viewModel.sendMessage("/block \(sender)")
                 }
+                #else
+                if let sender = selectedMessageSender { viewModel.sendMessage("/block \(sender)") }
+                #endif
             }
             
             Button("cancel", role: .cancel) {}
@@ -270,6 +290,7 @@ struct ContentView: View {
                     let windowedMessages = messages.suffix(currentWindowCount)
 
                     // Build stable UI IDs with a context key to avoid ID collisions when switching channels
+                    #if os(iOS)
                     let contextKey: String = {
                         if let peer = privatePeer { return "dm:\(peer)" }
                         switch locationManager.selectedChannel {
@@ -277,6 +298,12 @@ struct ContentView: View {
                         case .location(let ch): return "geo:\(ch.geohash)"
                         }
                     }()
+                    #else
+                    let contextKey: String = {
+                        if let peer = privatePeer { return "dm:\(peer)" }
+                        return "mesh"
+                    }()
+                    #endif
                     let items = windowedMessages.map { (uiID: "\(contextKey)|\($0.id)", message: $0) }
                     
                     ForEach(items, id: \.uiID) { item in
@@ -372,6 +399,7 @@ struct ContentView: View {
                             // Infinite scroll up: when top row appears, increase window and preserve anchor
                             if message.id == windowedMessages.first?.id, messages.count > windowedMessages.count {
                                 let step = 200
+                                #if os(iOS)
                                 let contextKey: String = {
                                     if let peer = privatePeer { return "dm:\(peer)" }
                                     switch locationManager.selectedChannel {
@@ -379,6 +407,12 @@ struct ContentView: View {
                                     case .location(let ch): return "geo:\(ch.geohash)"
                                     }
                                 }()
+                                #else
+                                let contextKey: String = {
+                                    if let peer = privatePeer { return "dm:\(peer)" }
+                                    return "mesh"
+                                }()
+                                #endif
                                 let preserveID = "\(contextKey)|\(message.id)"
                                 if let peer = privatePeer {
                                     let current = windowCountPrivate[peer] ?? 300
@@ -447,6 +481,7 @@ struct ContentView: View {
                 let gh = url.path.trimmingCharacters(in: CharacterSet(charactersIn: "/")).lowercased()
                 let allowed = Set("0123456789bcdefghjkmnpqrstuvwxyz")
                 guard (2...12).contains(gh.count), gh.allSatisfy({ allowed.contains($0) }) else { return }
+                #if os(iOS)
                 func levelForLength(_ len: Int) -> GeohashChannelLevel {
                     switch len {
                     case 0...2: return .region
@@ -461,6 +496,7 @@ struct ContentView: View {
                 let ch = GeohashChannel(level: level, geohash: gh)
                 LocationChannelManager.shared.markTeleported(for: gh, true)
                 LocationChannelManager.shared.select(ChannelID.location(ch))
+                #endif
             }
             .onTapGesture(count: 3) {
                 // Triple-tap to clear current chat
@@ -473,12 +509,16 @@ struct ContentView: View {
                        let last = viewModel.getPrivateChatMessages(for: peer).suffix(300).last?.id {
                         return "dm:\(peer)|\(last)"
                     }
+                    #if os(iOS)
                     let contextKey: String = {
                         switch locationManager.selectedChannel {
                         case .mesh: return "mesh"
                         case .location(let ch): return "geo:\(ch.geohash)"
                         }
                     }()
+                    #else
+                    let contextKey: String = "mesh"
+                    #endif
                     if let last = viewModel.messages.suffix(300).last?.id { return "\(contextKey)|\(last)" }
                     return nil
                 }()
@@ -493,12 +533,16 @@ struct ContentView: View {
                            let last = viewModel.getPrivateChatMessages(for: peer).suffix(300).last?.id {
                             return "dm:\(peer)|\(last)"
                         }
+                        #if os(iOS)
                         let contextKey: String = {
                             switch locationManager.selectedChannel {
                             case .mesh: return "mesh"
                             case .location(let ch): return "geo:\(ch.geohash)"
                             }
                         }()
+                        #else
+                        let contextKey: String = "mesh"
+                        #endif
                         if let last = viewModel.messages.suffix(300).last?.id { return "\(contextKey)|\(last)" }
                         return nil
                     }()
@@ -512,12 +556,16 @@ struct ContentView: View {
                        let last = viewModel.getPrivateChatMessages(for: peer).suffix(300).last?.id {
                         return "dm:\(peer)|\(last)"
                     }
+                    #if os(iOS)
                     let contextKey: String = {
                         switch locationManager.selectedChannel {
                         case .mesh: return "mesh"
                         case .location(let ch): return "geo:\(ch.geohash)"
                         }
                     }()
+                    #else
+                    let contextKey: String = "mesh"
+                    #endif
                     if let last = viewModel.messages.suffix(300).last?.id { return "\(contextKey)|\(last)" }
                     return nil
                 }()
@@ -543,12 +591,16 @@ struct ContentView: View {
                     if now.timeIntervalSince(lastScrollTime) > 0.5 {
                         // Immediate scroll if enough time has passed
                         lastScrollTime = now
+                        #if os(iOS)
                         let contextKey: String = {
                             switch locationManager.selectedChannel {
                             case .mesh: return "mesh"
                             case .location(let ch): return "geo:\(ch.geohash)"
                             }
                         }()
+                        #else
+                        let contextKey: String = "mesh"
+                        #endif
                         let count = windowCountPublic
                         let target = viewModel.messages.suffix(count).last.map { "\(contextKey)|\($0.id)" }
                         DispatchQueue.main.async {
@@ -559,12 +611,16 @@ struct ContentView: View {
                         scrollThrottleTimer?.invalidate()
                         scrollThrottleTimer = Timer.scheduledTimer(withTimeInterval: 0.5, repeats: false) { _ in
                             lastScrollTime = Date()
-                        let contextKey: String = {
-                            switch locationManager.selectedChannel {
-                            case .mesh: return "mesh"
-                            case .location(let ch): return "geo:\(ch.geohash)"
-                            }
-                        }()
+                            #if os(iOS)
+                            let contextKey: String = {
+                                switch locationManager.selectedChannel {
+                                case .mesh: return "mesh"
+                                case .location(let ch): return "geo:\(ch.geohash)"
+                                }
+                            }()
+                            #else
+                            let contextKey: String = "mesh"
+                            #endif
                             let count = windowCountPublic
                             let target = viewModel.messages.suffix(count).last.map { "\(contextKey)|\($0.id)" }
                             DispatchQueue.main.async {
@@ -611,6 +667,7 @@ struct ContentView: View {
                     }
                 }
             }
+            #if os(iOS)
             .onChange(of: locationManager.selectedChannel) { newChannel in
                 // When switching to a new geohash channel, scroll to the bottom
                 guard privatePeer == nil else { return }
@@ -629,6 +686,7 @@ struct ContentView: View {
                     }
                 }
             }
+            #endif
             .onAppear {
                 // Also check when view appears
                 if let peerID = privatePeer {
@@ -698,22 +756,18 @@ struct ContentView: View {
             if showCommandSuggestions && !commandSuggestions.isEmpty {
                 VStack(alignment: .leading, spacing: 0) {
                     // Define commands with aliases and syntax
-                    let baseInfo: [(commands: [String], syntax: String?, description: String)] = [
+                    let commandInfo: [(commands: [String], syntax: String?, description: String)] = [
                         (["/block"], "[nickname]", "block or list blocked peers"),
                         (["/clear"], nil, "clear chat messages"),
+                        (["/fav"], "<nickname>", "add to favorites"),
+                        (["/help"], nil, "show this help"),
                         (["/hug"], "<nickname>", "send someone a warm hug"),
                         (["/m", "/msg"], "<nickname> [message]", "send private message"),
                         (["/slap"], "<nickname>", "slap someone with a trout"),
                         (["/unblock"], "<nickname>", "unblock a peer"),
+                        (["/unfav"], "<nickname>", "remove from favorites"),
                         (["/w"], nil, "see who's online")
                     ]
-                    let isGeoPublic: Bool = { if case .location = locationManager.selectedChannel { return true }; return false }()
-                    let isGeoDM: Bool = (viewModel.selectedPrivateChatPeer?.hasPrefix("nostr_") == true)
-                    let favInfo: [(commands: [String], syntax: String?, description: String)] = [
-                        (["/fav"], "<nickname>", "add to favorites"),
-                        (["/unfav"], "<nickname>", "remove from favorites")
-                    ]
-                    let commandInfo = baseInfo + ((isGeoPublic || isGeoDM) ? [] : favInfo)
                     
                     // Build the display
                     let allCommands = commandInfo
@@ -788,25 +842,18 @@ struct ContentView: View {
                     // Check for command autocomplete (instant, no debounce needed)
                     if newValue.hasPrefix("/") && newValue.count >= 1 {
                         // Build context-aware command list
-                        let isGeoPublic: Bool = {
-                            if case .location = locationManager.selectedChannel { return true }
-                            return false
-                        }()
-                        let isGeoDM: Bool = (viewModel.selectedPrivateChatPeer?.hasPrefix("nostr_") == true)
-                        var commandDescriptions = [
+                        let commandDescriptions = [
                             ("/block", "block or list blocked peers"),
                             ("/clear", "clear chat messages"),
+                            ("/fav", "add to favorites"),
+                            ("/help", "show this help"),
                             ("/hug", "send someone a warm hug"),
                             ("/m", "send private message"),
                             ("/slap", "slap someone with a trout"),
                             ("/unblock", "unblock a peer"),
+                            ("/unfav", "remove from favorites"),
                             ("/w", "see who's online")
                         ]
-                        // Only show favorites commands when not in geohash context
-                        if !(isGeoPublic || isGeoDM) {
-                            commandDescriptions.append(("/fav", "add to favorites"))
-                            commandDescriptions.append(("/unfav", "remove from favorites"))
-                        }
                         
                         let input = newValue.lowercased()
                         
@@ -888,7 +935,8 @@ struct ContentView: View {
                         .font(.system(size: 16, weight: .bold, design: .monospaced))
                         .foregroundColor(textColor)
                     Spacer()
-                    // Show QR in mesh on all platforms
+                    // Show QR only on mesh channel's peer list
+                    #if os(iOS)
                     if case .mesh = locationManager.selectedChannel {
                         Button(action: { showVerifySheet = true }) {
                             Image(systemName: "qrcode")
@@ -897,6 +945,14 @@ struct ContentView: View {
                         .buttonStyle(.plain)
                         .help("Verification: show my QR or scan a friend")
                     }
+                    #else
+                    Button(action: { showVerifySheet = true }) {
+                        Image(systemName: "qrcode")
+                            .font(.system(size: 14))
+                    }
+                    .buttonStyle(.plain)
+                    .help("Verification: show my QR or scan a friend")
+                    #endif
                 }
                 .frame(height: 44) // Match header height
                 .padding(.horizontal, 12)
@@ -909,34 +965,53 @@ struct ContentView: View {
                 VStack(alignment: .leading, spacing: 6) {
                     // People section
                     VStack(alignment: .leading, spacing: 4) {
-                if case .location = locationManager.selectedChannel {
-                    GeohashPeopleList(viewModel: viewModel,
-                                      textColor: textColor,
-                                      secondaryTextColor: secondaryTextColor,
-                                      onTapPerson: {
-                                          withAnimation(.easeInOut(duration: 0.2)) {
-                                              showSidebar = false
-                                              sidebarDragOffset = 0
-                                          }
-                                      })
-                } else {
-                    MeshPeerList(viewModel: viewModel,
-                                 textColor: textColor,
-                                 secondaryTextColor: secondaryTextColor,
-                                 onTapPeer: { peerID in
-                                     viewModel.startPrivateChat(with: peerID)
-                                     withAnimation(.easeInOut(duration: 0.2)) {
-                                         showSidebar = false
-                                         sidebarDragOffset = 0
-                                     }
-                                 },
-                                 onToggleFavorite: { peerID in
-                                     viewModel.toggleFavorite(peerID: peerID)
-                                 },
-                                 onShowFingerprint: { peerID in
-                                     viewModel.showFingerprint(for: peerID)
-                                 })
-                }
+                        #if os(iOS)
+                        if case .location = locationManager.selectedChannel {
+                            GeohashPeopleList(viewModel: viewModel,
+                                              textColor: textColor,
+                                              secondaryTextColor: secondaryTextColor,
+                                              onTapPerson: {
+                                                  withAnimation(.easeInOut(duration: 0.2)) {
+                                                      showSidebar = false
+                                                      sidebarDragOffset = 0
+                                                  }
+                                              })
+                        } else {
+                            MeshPeerList(viewModel: viewModel,
+                                         textColor: textColor,
+                                         secondaryTextColor: secondaryTextColor,
+                                         onTapPeer: { peerID in
+                                             viewModel.startPrivateChat(with: peerID)
+                                             withAnimation(.easeInOut(duration: 0.2)) {
+                                                 showSidebar = false
+                                                 sidebarDragOffset = 0
+                                             }
+                                         },
+                                         onToggleFavorite: { peerID in
+                                             viewModel.toggleFavorite(peerID: peerID)
+                                         },
+                                         onShowFingerprint: { peerID in
+                                             viewModel.showFingerprint(for: peerID)
+                                         })
+                        }
+                        #else
+                        MeshPeerList(viewModel: viewModel,
+                                     textColor: textColor,
+                                     secondaryTextColor: secondaryTextColor,
+                                     onTapPeer: { peerID in
+                                         viewModel.startPrivateChat(with: peerID)
+                                         withAnimation(.easeInOut(duration: 0.2)) {
+                                             showSidebar = false
+                                             sidebarDragOffset = 0
+                                         }
+                                     },
+                                     onToggleFavorite: { peerID in
+                                         viewModel.toggleFavorite(peerID: peerID)
+                                     },
+                                     onShowFingerprint: { peerID in
+                                         viewModel.showFingerprint(for: peerID)
+                                     })
+                        #endif
                     }
                 }
                 .id(viewModel.allPeers.map { "\($0.id)-\($0.isConnected)" }.joined())
@@ -1026,11 +1101,13 @@ struct ContentView: View {
         return (name, "")
     }
     
-    // Compute channel-aware people count and color for toolbar (cross-platform)
+    #if os(iOS)
+    // Compute channel-aware people count and color for toolbar
     private func channelPeopleCountAndColor() -> (Int, Color) {
         switch locationManager.selectedChannel {
         case .location:
             let n = viewModel.geohashPeople.count
+            // Use standard green (dark: system green; light: custom darker green)
             let standardGreen = (colorScheme == .dark) ? Color.green : Color(red: 0, green: 0.5, blue: 0)
             return (n, n > 0 ? standardGreen : Color.secondary)
         case .mesh:
@@ -1040,11 +1117,13 @@ struct ContentView: View {
                 if isMeshConnected { counts.mesh += 1; counts.others += 1 }
                 else if peer.isMutualFavorite { counts.others += 1 }
             }
+            // Darker, more neutral blue (less purple hue)
             let meshBlue = Color(hue: 0.60, saturation: 0.85, brightness: 0.82)
             let color: Color = counts.mesh > 0 ? meshBlue : Color.secondary
             return (counts.others, color)
         }
     }
+    #endif
 
     
     private var mainHeaderView: some View {
@@ -1091,6 +1170,7 @@ struct ContentView: View {
             
             // Channel badge + dynamic spacing + people counter
             // Precompute header count and color outside the ViewBuilder expressions
+            #if os(iOS)
             let cc = channelPeopleCountAndColor()
             let headerCountColor: Color = cc.1
             let headerOtherPeersCount: Int = {
@@ -1099,11 +1179,24 @@ struct ContentView: View {
                 }
                 return cc.0
             }()
+            #else
+            let peerCounts = viewModel.allPeers.reduce(into: (others: 0, mesh: 0)) { counts, peer in
+                guard peer.id != viewModel.meshService.myPeerID else { return }
+                let isMeshConnected = peer.isConnected
+                if isMeshConnected { counts.mesh += 1; counts.others += 1 }
+                else if peer.isMutualFavorite { counts.others += 1 }
+            }
+            let headerOtherPeersCount = peerCounts.others
+            // Darker, more neutral blue (less purple hue)
+            let meshBlue = Color(hue: 0.60, saturation: 0.85, brightness: 0.82)
+            let headerCountColor: Color = (peerCounts.mesh > 0) ? meshBlue : Color.secondary
+            #endif
 
             HStack(spacing: 10) {
                 // Unread icon immediately to the left of the channel badge (independent from channel button)
                 
-                // Unread indicator (now shown on iOS and macOS)
+                // Unread indicator
+                #if os(iOS)
                 if viewModel.hasAnyUnreadMessages {
                     Button(action: { viewModel.openMostRelevantPrivateChat() }) {
                         Image(systemName: "envelope.fill")
@@ -1138,6 +1231,7 @@ struct ContentView: View {
                         .accessibilityLabel("location channels")
                 }
                 .buttonStyle(.plain)
+                #endif
 
                 HStack(spacing: 4) {
                     // People icon with count
@@ -1165,9 +1259,11 @@ struct ContentView: View {
         }
         .frame(height: 44)
         .padding(.horizontal, 12)
+        #if os(iOS)
         .sheet(isPresented: $showLocationChannelsSheet) {
             LocationChannelsSheet(isPresented: $showLocationChannelsSheet)
         }
+        #endif
         .background(backgroundColor.opacity(0.95))
     }
     
@@ -1203,11 +1299,13 @@ struct ContentView: View {
         let peer = viewModel.getPeer(byID: headerPeerID)
         let privatePeerNick: String = {
             if privatePeerID.hasPrefix("nostr_") {
+                #if os(iOS)
                 // Build geohash DM header: "#<ghash>/@name#abcd"
                 if case .location(let ch) = locationManager.selectedChannel {
                     let disp = viewModel.geohashDisplayName(for: privatePeerID)
                     return "#\(ch.geohash)/@\(disp)"
                 }
+                #endif
             }
             return peer?.displayName ?? 
                    viewModel.meshService.peerNickname(peerID: headerPeerID) ??
@@ -1372,7 +1470,23 @@ private struct PaymentChipView: View {
     }
 }
 
-//
+// Helper view for rendering message content (plain, no hashtag/mention formatting)
+struct MessageContentView: View {
+    let message: BitchatMessage
+    let viewModel: ChatViewModel
+    let colorScheme: ColorScheme
+    let isMentioned: Bool
+    
+    var body: some View {
+        Text(message.content)
+            .font(.system(size: 14, design: .monospaced))
+            .fontWeight(isMentioned ? .bold : .regular)
+    }
+    
+    // MARK: - Helper Methods
+    
+    // buildTextSegments removed: content is rendered plain.
+}
 
 // Delivery status indicator view
 struct DeliveryStatusView: View {

bitchat/Views/GeohashPeopleList.swift

@@ -1,5 +1,6 @@
 import SwiftUI
 
+#if os(iOS)
 struct GeohashPeopleList: View {
     @ObservedObject var viewModel: ChatViewModel
     let textColor: Color
@@ -28,12 +29,16 @@ struct GeohashPeopleList: View {
             let people = viewModel.visibleGeohashPeople()
             let currentIDs = people.map { $0.id }
 
+            #if os(iOS)
             let teleportedSet = Set(viewModel.teleportedGeo.map { $0.lowercased() })
             let isTeleportedID: (String) -> Bool = { id in
                 if teleportedSet.contains(id.lowercased()) { return true }
                 if let me = myHex, id == me, LocationChannelManager.shared.teleported { return true }
                 return false
             }
+            #else
+            let isTeleportedID: (String) -> Bool = { _ in false }
+            #endif
 
             let displayIDs = orderedIDs.filter { currentIDs.contains($0) } + currentIDs.filter { !orderedIDs.contains($0) }
             let nonTele = displayIDs.filter { !isTeleportedID($0) }
@@ -47,7 +52,11 @@ struct GeohashPeopleList: View {
                     let person = personByID[pid]!
                     HStack(spacing: 4) {
                         let isMe = (person.id == myHex)
+                        #if os(iOS)
                         let teleported = viewModel.teleportedGeo.contains(person.id.lowercased()) || (isMe && LocationChannelManager.shared.teleported)
+                        #else
+                        let teleported = false
+                        #endif
                         let icon = teleported ? "face.dashed" : "mappin.and.ellipse"
                         let assignedColor = viewModel.colorForNostrPubkey(person.id, isDark: colorScheme == .dark)
                         let rowColor: Color = isMe ? .orange : assignedColor
@@ -118,8 +127,10 @@ struct GeohashPeopleList: View {
         }
     }
 }
+#endif
 
 // Helper to split a trailing #abcd suffix
+#if os(iOS)
 private func splitSuffix(from name: String) -> (String, String) {
     guard name.count >= 5 else { return (name, "") }
     let suffix = String(name.suffix(5))
@@ -131,3 +142,4 @@ private func splitSuffix(from name: String) -> (String, String) {
     }
     return (name, "")
 }
+#endif

bitchat/Views/LocationChannelsSheet.swift

@@ -1,10 +1,7 @@
 import SwiftUI
-import CoreLocation
+
 #if os(iOS)
 import UIKit
-#else
-import AppKit
-#endif
 struct LocationChannelsSheet: View {
     @Binding var isPresented: Bool
     @ObservedObject private var manager = LocationChannelManager.shared
@@ -40,7 +37,11 @@ struct LocationChannelsSheet: View {
                             Text("location permission denied. enable in settings to use location channels.")
                                 .font(.system(size: 12, design: .monospaced))
                                 .foregroundColor(.secondary)
-                            Button("open settings") { openSystemLocationSettings() }
+                            Button("open settings") {
+                                if let url = URL(string: UIApplication.openSettingsURLString) {
+                                    UIApplication.shared.open(url)
+                                }
+                            }
                             .buttonStyle(.plain)
                         }
                     case LocationChannelManager.PermissionState.authorized:
@@ -53,7 +54,6 @@ struct LocationChannelsSheet: View {
             }
             .padding(.horizontal, 16)
             .padding(.vertical, 12)
-            #if os(iOS)
             .navigationBarTitleDisplayMode(.inline)
             .toolbar {
                 ToolbarItem(placement: .navigationBarTrailing) {
@@ -61,21 +61,8 @@ struct LocationChannelsSheet: View {
                         .font(.system(size: 14, design: .monospaced))
                 }
             }
-            #else
-            .toolbar {
-                ToolbarItem(placement: .automatic) {
-                    Button("close") { isPresented = false }
-                        .font(.system(size: 14, design: .monospaced))
-                }
-            }
-            #endif
         }
-        #if os(iOS)
         .presentationDetents([.large])
-        #endif
-        #if os(macOS)
-        .frame(minWidth: 420, minHeight: 520)
-        #endif
         .onAppear {
             // Refresh channels when opening
             if manager.permissionState == LocationChannelManager.PermissionState.authorized {
@@ -141,12 +128,10 @@ struct LocationChannelsSheet: View {
                         .font(.system(size: 14, design: .monospaced))
                         .foregroundColor(.secondary)
                     TextField("geohash", text: $customGeohash)
-                        #if os(iOS)
                         .textInputAutocapitalization(.never)
                         .autocorrectionDisabled(true)
-                        .keyboardType(.asciiCapable)
-                        #endif
                         .font(.system(size: 14, design: .monospaced))
+                        .keyboardType(.asciiCapable)
                         .onChange(of: customGeohash) { newValue in
                             // Allow only geohash base32 characters, strip '#', limit length
                             let allowed = Set("0123456789bcdefghjkmnpqrstuvwxyz")
@@ -198,7 +183,9 @@ struct LocationChannelsSheet: View {
             // Footer action inside the list
             if manager.permissionState == LocationChannelManager.PermissionState.authorized {
                 Button(action: {
-                    openSystemLocationSettings()
+                    if let url = URL(string: UIApplication.openSettingsURLString) {
+                        UIApplication.shared.open(url)
+                    }
                 }) {
                     Text("remove location access")
                         .font(.system(size: 12, design: .monospaced))
@@ -356,7 +343,7 @@ extension LocationChannelsSheet {
         }()
 
         let usesMetric: Bool = {
-            if #available(iOS 16.0, macOS 13.0, *) {
+            if #available(iOS 16.0, *) {
                 return Locale.current.measurementSystem == .metric
             } else {
                 return Locale.current.usesMetricSystem
@@ -379,7 +366,7 @@ extension LocationChannelsSheet {
 
     private func bluetoothRangeString() -> String {
         let usesMetric: Bool = {
-            if #available(iOS 16.0, macOS 13.0, *) {
+            if #available(iOS 16.0, *) {
                 return Locale.current.measurementSystem == .metric
             } else {
                 return Locale.current.usesMetricSystem
@@ -403,17 +390,4 @@ extension LocationChannelsSheet {
     }
 }
 
-// MARK: - Open Settings helper
-private func openSystemLocationSettings() {
-    #if os(iOS)
-    if let url = URL(string: UIApplication.openSettingsURLString) {
-        UIApplication.shared.open(url)
-    }
-    #else
-    if let url = URL(string: "x-apple.systempreferences:com.apple.preference.security?Privacy_LocationServices") {
-        NSWorkspace.shared.open(url)
-    } else if let url = URL(string: "x-apple.systempreferences:com.apple.preference.security") {
-        NSWorkspace.shared.open(url)
-    }
-    #endif
-}
+#endif

bitchat/bitchat-macOS.entitlements

@@ -10,9 +10,7 @@
 	</array>
 	<key>com.apple.security.device.bluetooth</key>
 	<true/>
-	<key>com.apple.security.personal-information.location</key>
-	<true/>
 	<key>com.apple.security.network.client</key>
 	<true/>
 </dict>
-</plist>
+</plist>

bitchatShareExtension/ShareViewController.swift

@@ -7,160 +7,160 @@
 //
 
 import UIKit
+import Social
 import UniformTypeIdentifiers
 
-/// Modern share extension using UIKit + UTTypes.
-/// Avoids deprecated Social framework and SLComposeServiceViewController.
-final class ShareViewController: UIViewController {
-    private let statusLabel: UILabel = {
-        let l = UILabel()
-        l.translatesAutoresizingMaskIntoConstraints = false
-        l.font = .systemFont(ofSize: 15, weight: .semibold)
-        l.textAlignment = .center
-        l.numberOfLines = 0
-        l.textColor = .label
-        return l
-    }()
-
+class ShareViewController: SLComposeServiceViewController {
+    
     override func viewDidLoad() {
         super.viewDidLoad()
-        view.backgroundColor = .systemBackground
-        view.addSubview(statusLabel)
-        NSLayoutConstraint.activate([
-            statusLabel.centerXAnchor.constraint(equalTo: view.centerXAnchor),
-            statusLabel.centerYAnchor.constraint(equalTo: view.centerYAnchor),
-            statusLabel.leadingAnchor.constraint(greaterThanOrEqualTo: view.layoutMarginsGuide.leadingAnchor),
-            statusLabel.trailingAnchor.constraint(lessThanOrEqualTo: view.layoutMarginsGuide.trailingAnchor)
-        ])
-
-        processShare()
+        // Set placeholder text
+        placeholder = "Share to bitchat..."
+        // Set character limit (optional)
+        charactersRemaining = 500
     }
-
-    // MARK: - Processing
-    private func processShare() {
-        guard let ctx = self.extensionContext,
-              let item = ctx.inputItems.first as? NSExtensionItem else {
-            finishWithMessage("Nothing to share")
+    
+    override func isContentValid() -> Bool {
+        // Validate that we have text content or attachments
+        if let text = contentText, !text.isEmpty {
+            return true
+        }
+        // Check if we have attachments
+        if let item = extensionContext?.inputItems.first as? NSExtensionItem,
+           let attachments = item.attachments,
+           !attachments.isEmpty {
+            return true
+        }
+        return false
+    }
+    
+    override func didSelectPost() {
+        guard let extensionItem = extensionContext?.inputItems.first as? NSExtensionItem else {
+            self.extensionContext?.completeRequest(returningItems: nil, completionHandler: nil)
             return
         }
-
-        // Try content from attributed text first (Safari often passes URL here)
-        if let url = detectURL(in: item.attributedContentText?.string ?? "") {
-            saveAndFinish(url: url, title: item.attributedTitle?.string)
-            return
-        }
-
-        // Scan attachments for URL/text
-        let providers = item.attachments ?? []
-        if providers.isEmpty {
-            // Fallback: use attributed title as plain text
-            if let title = item.attributedTitle?.string, !title.isEmpty {
-                saveAndFinish(text: title)
-            } else {
-                finishWithMessage("No shareable content")
+        
+        
+        // Get the page title from the compose view or extension item
+        let pageTitle = self.contentText ?? extensionItem.attributedContentText?.string ?? extensionItem.attributedTitle?.string
+        
+        var foundURL: URL? = nil
+        let group = DispatchGroup()
+        
+        // IMPORTANT: Check if the NSExtensionItem itself has a URL
+        // Safari often provides the URL as an attributedString with a link
+        if let attributedText = extensionItem.attributedContentText {
+            let text = attributedText.string
+            let detector = try? NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue)
+            let matches = detector?.matches(in: text, options: [], range: NSRange(location: 0, length: text.utf16.count))
+            if let firstMatch = matches?.first, let url = firstMatch.url {
+                foundURL = url
             }
-            return
         }
-
-        // Load URL or text asynchronously
-        loadFirstURL(from: providers) { [weak self] url in
-            guard let self = self else { return }
-            if let url = url {
-                self.saveAndFinish(url: url, title: item.attributedTitle?.string)
-            } else {
-                self.loadFirstPlainText(from: providers) { text in
-                    if let t = text, !t.isEmpty {
-                        // Treat as URL if parseable http(s), else plain text
-                        if let u = URL(string: t), ["http","https"].contains(u.scheme?.lowercased() ?? "") {
-                            self.saveAndFinish(url: u, title: item.attributedTitle?.string)
-                        } else {
-                            self.saveAndFinish(text: t)
+        
+        // Only check attachments if we haven't found a URL yet
+        if foundURL == nil {
+            for (_, itemProvider) in (extensionItem.attachments ?? []).enumerated() {
+                
+                // Try multiple URL type identifiers that Safari might use
+                let urlTypes = [
+                    UTType.url.identifier,
+                    "public.url",
+                    "public.file-url"
+                ]
+                
+                for urlType in urlTypes {
+                    if itemProvider.hasItemConformingToTypeIdentifier(urlType) {
+                        group.enter()
+                        itemProvider.loadItem(forTypeIdentifier: urlType, options: nil) { (item, error) in
+                            defer { group.leave() }
+                            
+                            if let url = item as? URL {
+                                foundURL = url
+                        } else if let data = item as? Data,
+                                  let urlString = String(data: data, encoding: .utf8),
+                                  let url = URL(string: urlString) {
+                            foundURL = url
+                        } else if let string = item as? String,
+                                  let url = URL(string: string) {
+                            foundURL = url
+                        }
+                    }
+                    break // Found a URL type, no need to check other types
+                }
+            }
+            
+            // Also check for plain text that might be a URL
+            if foundURL == nil && itemProvider.hasItemConformingToTypeIdentifier(UTType.plainText.identifier) {
+                group.enter()
+                itemProvider.loadItem(forTypeIdentifier: UTType.plainText.identifier, options: nil) { (item, error) in
+                    defer { group.leave() }
+                    
+                    if let text = item as? String {
+                        // Check if the text is actually a URL
+                        if let url = URL(string: text),
+                           (url.scheme == "http" || url.scheme == "https") {
+                            foundURL = url
                         }
-                    } else {
-                        self.finishWithMessage("No shareable content")
                     }
                 }
             }
         }
-    }
-
-    private func detectURL(in text: String) -> URL? {
-        guard !text.isEmpty else { return nil }
-        let detector = try? NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue)
-        let range = NSRange(location: 0, length: (text as NSString).length)
-        let match = detector?.matches(in: text, options: [], range: range).first
-        return match?.url
-    }
-
-    private func loadFirstURL(from providers: [NSItemProvider], completion: @escaping (URL?) -> Void) {
-        let identifiers = [UTType.url.identifier, "public.url", "public.file-url"]
-        let grp = DispatchGroup()
-        var found: URL?
-
-        for p in providers where found == nil {
-            for id in identifiers where p.hasItemConformingToTypeIdentifier(id) {
-                grp.enter()
-                p.loadItem(forTypeIdentifier: id, options: nil) { item, _ in
-                    defer { grp.leave() }
-                    if let u = item as? URL { found = u; return }
-                    if let s = item as? String, let u = URL(string: s) { found = u; return }
-                    if let d = item as? Data, let s = String(data: d, encoding: .utf8), let u = URL(string: s) { found = u; return }
+        } // End of if foundURL == nil
+        
+        // Process after all checks complete
+        group.notify(queue: .main) { [weak self] in
+            if let url = foundURL {
+                // We have a URL! Create the JSON data
+                let urlData: [String: String] = [
+                    "url": url.absoluteString,
+                    "title": pageTitle ?? url.host ?? "Shared Link"
+                ]
+                
+                
+                if let jsonData = try? JSONSerialization.data(withJSONObject: urlData),
+                   let jsonString = String(data: jsonData, encoding: .utf8) {
+                    self?.saveToSharedDefaults(content: jsonString, type: "url")
                 }
-                break
+            } else if let title = pageTitle, !title.isEmpty {
+                // No URL found, just share the text
+                self?.saveToSharedDefaults(content: title, type: "text")
             }
-        }
-        grp.notify(queue: .main) { completion(found) }
-    }
-
-    private func loadFirstPlainText(from providers: [NSItemProvider], completion: @escaping (String?) -> Void) {
-        let id = UTType.plainText.identifier
-        let grp = DispatchGroup()
-        var text: String?
-        for p in providers where p.hasItemConformingToTypeIdentifier(id) {
-            grp.enter()
-            p.loadItem(forTypeIdentifier: id, options: nil) { item, _ in
-                defer { grp.leave() }
-                if let s = item as? String { text = s }
-                else if let d = item as? Data, let s = String(data: d, encoding: .utf8) { text = s }
-            }
-            break
-        }
-        grp.notify(queue: .main) { completion(text) }
-    }
-
-    // MARK: - Save + Finish
-    private func saveAndFinish(url: URL, title: String?) {
-        let payload: [String: String] = [
-            "url": url.absoluteString,
-            "title": title ?? url.host ?? "Shared Link"
-        ]
-        if let json = try? JSONSerialization.data(withJSONObject: payload),
-           let s = String(data: json, encoding: .utf8) {
-            saveToSharedDefaults(content: s, type: "url")
-            finishWithMessage("✓ Shared link to bitchat")
-        } else {
-            finishWithMessage("Failed to encode link")
+            
+            self?.extensionContext?.completeRequest(returningItems: nil, completionHandler: nil)
         }
     }
-
-    private func saveAndFinish(text: String) {
-        saveToSharedDefaults(content: text, type: "text")
-        finishWithMessage("✓ Shared text to bitchat")
+    
+    override func configurationItems() -> [Any]! {
+        // No configuration items needed
+        return []
     }
-
+    
+    // MARK: - Helper Methods
+    
     private func saveToSharedDefaults(content: String, type: String) {
-        guard let userDefaults = UserDefaults(suiteName: "group.chat.bitchat") else { return }
+        // Use app groups to share data between extension and main app
+        guard let userDefaults = UserDefaults(suiteName: "group.chat.bitchat") else {
+            return
+        }
+        
         userDefaults.set(content, forKey: "sharedContent")
         userDefaults.set(type, forKey: "sharedContentType")
         userDefaults.set(Date(), forKey: "sharedContentDate")
         userDefaults.synchronize()
+        
+        
+        // Force open the main app
+        self.openMainApp()
     }
-
-    private func finishWithMessage(_ msg: String) {
-        statusLabel.text = msg
-        // Complete shortly after showing status
-        DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
-            self.extensionContext?.completeRequest(returningItems: nil, completionHandler: nil)
+    
+    private func openMainApp() {
+        // Share extensions cannot directly open the containing app
+        // The app will check for shared content when it becomes active
+        // Show success feedback to user
+        DispatchQueue.main.async {
+            self.textView.text = "✓ Shared to bitchat"
+            self.textView.isEditable = false
         }
     }
-}
+}

bitchatTests/NostrProtocolTests.swift

@@ -21,10 +21,8 @@ final class NostrProtocolTests: XCTestCase {
         let sender = try NostrIdentity.generate()
         let recipient = try NostrIdentity.generate()
         
-        #if DEBUG
         print("Sender pubkey: \(sender.publicKeyHex)")
         print("Recipient pubkey: \(recipient.publicKeyHex)")
-        #endif
         
         // Create a test message
         let originalContent = "Hello from NIP-17 test!"
@@ -36,10 +34,8 @@ final class NostrProtocolTests: XCTestCase {
             senderIdentity: sender
         )
         
-        #if DEBUG
         print("Gift wrap created with ID: \(giftWrap.id)")
         print("Gift wrap pubkey: \(giftWrap.pubkey)")
-        #endif
         
         // Decrypt the gift wrap
         let (decryptedContent, senderPubkey, timestamp) = try NostrProtocol.decryptPrivateMessage(
@@ -56,9 +52,7 @@ final class NostrProtocolTests: XCTestCase {
         let timeDiff = abs(messageDate.timeIntervalSinceNow)
         XCTAssertLessThan(timeDiff, 60, "Message timestamp should be recent")
         
-        #if DEBUG
         print("✅ Successfully decrypted message: '\(decryptedContent)' from \(senderPubkey) at \(messageDate)")
-        #endif
     }
     
     func testGiftWrapUsesUniqueEphemeralKeys() throws {
@@ -81,10 +75,8 @@ final class NostrProtocolTests: XCTestCase {
         
         // Gift wrap pubkeys should be different (unique ephemeral keys)
         XCTAssertNotEqual(message1.pubkey, message2.pubkey)
-        #if DEBUG
         print("Message 1 gift wrap pubkey: \(message1.pubkey)")
         print("Message 2 gift wrap pubkey: \(message2.pubkey)")
-        #endif
         
         // Both should decrypt successfully
         let (content1, _, _) = try NostrProtocol.decryptPrivateMessage(
@@ -117,9 +109,7 @@ final class NostrProtocolTests: XCTestCase {
             giftWrap: giftWrap,
             recipientIdentity: wrongRecipient
         )) { error in
-            #if DEBUG
             print("Expected error when decrypting with wrong key: \(error)")
-            #endif
         }
     }
 

bitchatTests/TestUtilities/LegacyTestProtocolTypes.swift

@@ -0,0 +1,45 @@
+//
+// LegacyTestProtocolTypes.swift
+// bitchatTests
+//
+// Minimal legacy protocol types used only by tests to simulate old flows.
+// These are not part of production code anymore.
+
+import Foundation
+
+struct ProtocolNack {
+    let originalPacketID: String
+    let nackID: String
+    let senderID: String
+    let receiverID: String
+    let packetType: UInt8
+    let reason: String
+    let errorCode: UInt8
+    
+    enum ErrorCode: UInt8 {
+        case unknown = 0
+        case decryptionFailed = 2
+    }
+    
+    init(originalPacketID: String, senderID: String, receiverID: String, packetType: UInt8, reason: String, errorCode: ErrorCode = .unknown) {
+        self.originalPacketID = originalPacketID
+        self.nackID = UUID().uuidString
+        self.senderID = senderID
+        self.receiverID = receiverID
+        self.packetType = packetType
+        self.reason = reason
+        self.errorCode = errorCode.rawValue
+    }
+    
+    func toBinaryData() -> Data {
+        // Tests don't parse the payload; return a compact encoding for completeness
+        var data = Data()
+        data.appendUUID(originalPacketID)
+        data.appendUUID(nackID)
+        data.append(UInt8(packetType))
+        data.append(UInt8(errorCode))
+        data.appendString(reason)
+        return data
+    }
+}
+

build.log

@@ -0,0 +1,13 @@
+Command line invocation:
+    /Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild -project bitchat.xcodeproj -scheme bitchat -configuration Debug -sdk iphonesimulator CODE_SIGNING_ALLOWED=NO ONLY_ACTIVE_ARCH=YES
+
+Build settings from command line:
+    CODE_SIGNING_ALLOWED = NO
+    ONLY_ACTIVE_ARCH = YES
+    SDKROOT = iphonesimulator18.5
+
+Resolve Package Graph
+/Users/jack/Library/org.swift.swiftpm/configuration is not accessible or not writable, disabling user-level cache features./Users/jack/Library/org.swift.swiftpm/security is not accessible or not writable, disabling user-level cache features./Users/jack/Library/Caches/org.swift.swiftpm is not accessible or not writable, disabling user-level cache features.
+Package: swift-secp256k1
+
+fatalError