feat: migrate android node to gateway ws

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 Docs: https://docs.clawd.bot
 
+## 2026.1.19-2
+
+### Changes
+- Android: migrate node transport to the Gateway WebSocket protocol with TLS pinning support + gateway discovery naming.
+- Docs: refresh Android node discovery docs for the Gateway WS service type.
+
 ## 2026.1.19-1
 
 ### Breaking

apps/android/README.md

@@ -1,6 +1,6 @@
 ## Clawdbot Node (Android) (internal)
 
-Modern Android node app: connects to the **Gateway-owned bridge** (`_clawdbot-bridge._tcp`) over TCP and exposes **Canvas + Chat + Camera**.
+Modern Android node app: connects to the **Gateway WebSocket** (`_clawdbot-gateway._tcp`) and exposes **Canvas + Chat + Camera**.
 
 Notes:
 - The node keeps the connection alive via a **foreground service** (persistent notification with a Disconnect action).
@@ -30,7 +30,7 @@ pnpm clawdbot gateway --port 18789 --verbose
 
 2) In the Android app:
 - Open **Settings**
-- Either select a discovered bridge under **Discovered Bridges**, or use **Advanced → Manual Bridge** (host + port).
+- Either select a discovered gateway under **Discovered Gateways**, or use **Advanced → Manual Gateway** (host + port).
 
 3) Approve pairing (on the gateway machine):
 ```bash
@@ -38,7 +38,7 @@ clawdbot nodes pending
 clawdbot nodes approve <requestId>
 ```
 
-More details: `docs/android/connect.md`.
+More details: `docs/platforms/android.md`.
 
 ## Permissions
 

apps/android/app/build.gradle.kts

@@ -103,6 +103,7 @@ dependencies {
 
   implementation("androidx.security:security-crypto:1.1.0")
   implementation("androidx.exifinterface:exifinterface:1.4.2")
+  implementation("com.squareup.okhttp3:okhttp:4.12.0")
 
   // CameraX (for node.invoke camera.* parity)
   implementation("androidx.camera:camera-core:1.5.2")

apps/android/app/src/main/java/com/clawdbot/android/MainViewModel.kt

@@ -2,7 +2,7 @@ package com.clawdbot.android
 
 import android.app.Application
 import androidx.lifecycle.AndroidViewModel
-import com.clawdbot.android.bridge.BridgeEndpoint
+import com.clawdbot.android.gateway.GatewayEndpoint
 import com.clawdbot.android.chat.OutgoingAttachment
 import com.clawdbot.android.node.CameraCaptureManager
 import com.clawdbot.android.node.CanvasController
@@ -18,7 +18,7 @@ class MainViewModel(app: Application) : AndroidViewModel(app) {
   val screenRecorder: ScreenRecordManager = runtime.screenRecorder
   val sms: SmsManager = runtime.sms
 
-  val bridges: StateFlow<List<BridgeEndpoint>> = runtime.bridges
+  val gateways: StateFlow<List<GatewayEndpoint>> = runtime.gateways
   val discoveryStatusText: StateFlow<String> = runtime.discoveryStatusText
 
   val isConnected: StateFlow<Boolean> = runtime.isConnected
@@ -50,6 +50,7 @@ class MainViewModel(app: Application) : AndroidViewModel(app) {
   val manualEnabled: StateFlow<Boolean> = runtime.manualEnabled
   val manualHost: StateFlow<String> = runtime.manualHost
   val manualPort: StateFlow<Int> = runtime.manualPort
+  val manualTls: StateFlow<Boolean> = runtime.manualTls
   val canvasDebugStatusEnabled: StateFlow<Boolean> = runtime.canvasDebugStatusEnabled
 
   val chatSessionKey: StateFlow<String> = runtime.chatSessionKey
@@ -99,6 +100,10 @@ class MainViewModel(app: Application) : AndroidViewModel(app) {
     runtime.setManualPort(value)
   }
 
+  fun setManualTls(value: Boolean) {
+    runtime.setManualTls(value)
+  }
+
   fun setCanvasDebugStatusEnabled(value: Boolean) {
     runtime.setCanvasDebugStatusEnabled(value)
   }
@@ -119,11 +124,11 @@ class MainViewModel(app: Application) : AndroidViewModel(app) {
     runtime.setTalkEnabled(enabled)
   }
 
-  fun refreshBridgeHello() {
+  fun refreshGatewayConnection() {
-    runtime.refreshBridgeHello()
+    runtime.refreshGatewayConnection()
   }
 
-  fun connect(endpoint: BridgeEndpoint) {
+  fun connect(endpoint: GatewayEndpoint) {
     runtime.connect(endpoint)
   }
 

apps/android/app/src/main/java/com/clawdbot/android/NodeRuntime.kt

@@ -12,11 +12,12 @@ import com.clawdbot.android.chat.ChatMessage
 import com.clawdbot.android.chat.ChatPendingToolCall
 import com.clawdbot.android.chat.ChatSessionEntry
 import com.clawdbot.android.chat.OutgoingAttachment
-import com.clawdbot.android.bridge.BridgeDiscovery
+import com.clawdbot.android.gateway.DeviceIdentityStore
-import com.clawdbot.android.bridge.BridgeEndpoint
+import com.clawdbot.android.gateway.GatewayConnectOptions
-import com.clawdbot.android.bridge.BridgePairingClient
+import com.clawdbot.android.gateway.GatewayDiscovery
-import com.clawdbot.android.bridge.BridgeSession
+import com.clawdbot.android.gateway.GatewayEndpoint
-import com.clawdbot.android.bridge.BridgeTlsParams
+import com.clawdbot.android.gateway.GatewaySession
+import com.clawdbot.android.gateway.GatewayTlsParams
 import com.clawdbot.android.node.CameraCaptureManager
 import com.clawdbot.android.node.LocationCaptureManager
 import com.clawdbot.android.BuildConfig
@@ -74,7 +75,7 @@ class NodeRuntime(context: Context) {
       context = appContext,
       scope = scope,
       onCommand = { command ->
-        session.sendEvent(
+        nodeSession.sendNodeEvent(
           event = "agent.request",
           payloadJson =
             buildJsonObject {
@@ -103,10 +104,12 @@ class NodeRuntime(context: Context) {
   val talkIsSpeaking: StateFlow<Boolean>
     get() = talkMode.isSpeaking
 
-  private val discovery = BridgeDiscovery(appContext, scope = scope)
+  private val discovery = GatewayDiscovery(appContext, scope = scope)
-  val bridges: StateFlow<List<BridgeEndpoint>> = discovery.bridges
+  val gateways: StateFlow<List<GatewayEndpoint>> = discovery.gateways
   val discoveryStatusText: StateFlow<String> = discovery.statusText
 
+  private val identityStore = DeviceIdentityStore(appContext)
+
   private val _isConnected = MutableStateFlow(false)
   val isConnected: StateFlow<Boolean> = _isConnected.asStateFlow()
 
@@ -139,52 +142,87 @@ class NodeRuntime(context: Context) {
   val isForeground: StateFlow<Boolean> = _isForeground.asStateFlow()
 
   private var lastAutoA2uiUrl: String? = null
+  private var operatorConnected = false
+  private var nodeConnected = false
+  private var operatorStatusText: String = "Offline"
+  private var nodeStatusText: String = "Offline"
+  private var connectedEndpoint: GatewayEndpoint? = null
 
-  private val session =
+  private val operatorSession =
-    BridgeSession(
+    GatewaySession(
       scope = scope,
+      identityStore = identityStore,
       onConnected = { name, remote, mainSessionKey ->
-        _statusText.value = "Connected"
+        operatorConnected = true
+        operatorStatusText = "Connected"
         _serverName.value = name
         _remoteAddress.value = remote
-        _isConnected.value = true
         _seamColorArgb.value = DEFAULT_SEAM_COLOR_ARGB
         applyMainSessionKey(mainSessionKey)
+        updateStatus()
         scope.launch { refreshBrandingFromGateway() }
         scope.launch { refreshWakeWordsFromGateway() }
+      },
+      onDisconnected = { message ->
+        operatorConnected = false
+        operatorStatusText = message
+        _serverName.value = null
+        _remoteAddress.value = null
+        _seamColorArgb.value = DEFAULT_SEAM_COLOR_ARGB
+        if (!isCanonicalMainSessionKey(_mainSessionKey.value)) {
+          _mainSessionKey.value = "main"
+        }
+        val mainKey = resolveMainSessionKey()
+        talkMode.setMainSessionKey(mainKey)
+        chat.applyMainSessionKey(mainKey)
+        chat.onDisconnected(message)
+        updateStatus()
+      },
+      onEvent = { event, payloadJson ->
+        handleGatewayEvent(event, payloadJson)
+      },
+    )
+
+  private val nodeSession =
+    GatewaySession(
+      scope = scope,
+      identityStore = identityStore,
+      onConnected = { _, _, _ ->
+        nodeConnected = true
+        nodeStatusText = "Connected"
+        updateStatus()
         maybeNavigateToA2uiOnConnect()
       },
-      onDisconnected = { message -> handleSessionDisconnected(message) },
+      onDisconnected = { message ->
-      onEvent = { event, payloadJson ->
+        nodeConnected = false
-        handleBridgeEvent(event, payloadJson)
+        nodeStatusText = message
+        updateStatus()
+        showLocalCanvasOnDisconnect()
       },
+      onEvent = { _, _ -> },
       onInvoke = { req ->
         handleInvoke(req.command, req.paramsJson)
       },
       onTlsFingerprint = { stableId, fingerprint ->
-        prefs.saveBridgeTlsFingerprint(stableId, fingerprint)
+        prefs.saveGatewayTlsFingerprint(stableId, fingerprint)
       },
     )
 
-  private val chat = ChatController(scope = scope, session = session, json = json)
+  private val chat =
+    ChatController(
+      scope = scope,
+      session = operatorSession,
+      json = json,
+      supportsChatSubscribe = false,
+    )
   private val talkMode: TalkModeManager by lazy {
-    TalkModeManager(context = appContext, scope = scope).also { it.attachSession(session) }
+    TalkModeManager(
-  }
+      context = appContext,
-
+      scope = scope,
-  private fun handleSessionDisconnected(message: String) {
+      session = operatorSession,
-    _statusText.value = message
+      supportsChatSubscribe = false,
-    _serverName.value = null
+      isConnected = { operatorConnected },
-    _remoteAddress.value = null
+    )
-    _isConnected.value = false
-    _seamColorArgb.value = DEFAULT_SEAM_COLOR_ARGB
-    if (!isCanonicalMainSessionKey(_mainSessionKey.value)) {
-      _mainSessionKey.value = "main"
-    }
-    val mainKey = resolveMainSessionKey()
-    talkMode.setMainSessionKey(mainKey)
-    chat.applyMainSessionKey(mainKey)
-    chat.onDisconnected(message)
-    showLocalCanvasOnDisconnect()
   }
 
   private fun applyMainSessionKey(candidate: String?) {
@@ -197,6 +235,18 @@ class NodeRuntime(context: Context) {
     chat.applyMainSessionKey(trimmed)
   }
 
+  private fun updateStatus() {
+    _isConnected.value = operatorConnected
+    _statusText.value =
+      when {
+        operatorConnected && nodeConnected -> "Connected"
+        operatorConnected && !nodeConnected -> "Connected (node offline)"
+        !operatorConnected && nodeConnected -> "Connected (operator offline)"
+        operatorStatusText.isNotBlank() && operatorStatusText != "Offline" -> operatorStatusText
+        else -> nodeStatusText
+      }
+  }
+
   private fun resolveMainSessionKey(): String {
     val trimmed = _mainSessionKey.value.trim()
     return if (trimmed.isEmpty()) "main" else trimmed
@@ -228,6 +278,7 @@ class NodeRuntime(context: Context) {
   val manualEnabled: StateFlow<Boolean> = prefs.manualEnabled
   val manualHost: StateFlow<String> = prefs.manualHost
   val manualPort: StateFlow<Int> = prefs.manualPort
+  val manualTls: StateFlow<Boolean> = prefs.manualTls
   val lastDiscoveredStableId: StateFlow<String> = prefs.lastDiscoveredStableId
   val canvasDebugStatusEnabled: StateFlow<Boolean> = prefs.canvasDebugStatusEnabled
 
@@ -288,24 +339,21 @@ class NodeRuntime(context: Context) {
     }
 
     scope.launch(Dispatchers.Default) {
-      bridges.collect { list ->
+      gateways.collect { list ->
         if (list.isNotEmpty()) {
-          // Persist the last discovered bridge (best-effort UX parity with iOS).
+          // Persist the last discovered gateway (best-effort UX parity with iOS).
           prefs.setLastDiscoveredStableId(list.last().stableId)
         }
 
         if (didAutoConnect) return@collect
         if (_isConnected.value) return@collect
 
-        val token = prefs.loadBridgeToken()
-        if (token.isNullOrBlank()) return@collect
-
         if (manualEnabled.value) {
           val host = manualHost.value.trim()
           val port = manualPort.value
           if (host.isNotEmpty() && port in 1..65535) {
             didAutoConnect = true
-            connect(BridgeEndpoint.manual(host = host, port = port))
+            connect(GatewayEndpoint.manual(host = host, port = port))
           }
           return@collect
         }
@@ -371,6 +419,10 @@ class NodeRuntime(context: Context) {
     prefs.setManualPort(value)
   }
 
+  fun setManualTls(value: Boolean) {
+    prefs.setManualTls(value)
+  }
+
   fun setCanvasDebugStatusEnabled(value: Boolean) {
     prefs.setCanvasDebugStatusEnabled(value)
   }
@@ -429,99 +481,78 @@ class NodeRuntime(context: Context) {
       }
     }
 
-  private fun buildPairingHello(token: String?): BridgePairingClient.Hello {
+  private fun resolvedVersionName(): String {
-    val modelIdentifier = listOfNotNull(Build.MANUFACTURER, Build.MODEL)
-      .joinToString(" ")
-      .trim()
-      .ifEmpty { null }
     val versionName = BuildConfig.VERSION_NAME.trim().ifEmpty { "dev" }
-    val advertisedVersion =
+    return if (BuildConfig.DEBUG && !versionName.contains("dev", ignoreCase = true)) {
-      if (BuildConfig.DEBUG && !versionName.contains("dev", ignoreCase = true)) {
+      "$versionName-dev"
-        "$versionName-dev"
+    } else {
-      } else {
+      versionName
-        versionName
-      }
-    return BridgePairingClient.Hello(
-      nodeId = instanceId.value,
-      displayName = displayName.value,
-      token = token,
-      platform = "Android",
-      version = advertisedVersion,
-      deviceFamily = "Android",
-      modelIdentifier = modelIdentifier,
-      caps = buildCapabilities(),
-      commands = buildInvokeCommands(),
-    )
-  }
-
-  private fun buildSessionHello(token: String?): BridgeSession.Hello {
-    val modelIdentifier = listOfNotNull(Build.MANUFACTURER, Build.MODEL)
-      .joinToString(" ")
-      .trim()
-      .ifEmpty { null }
-    val versionName = BuildConfig.VERSION_NAME.trim().ifEmpty { "dev" }
-    val advertisedVersion =
-      if (BuildConfig.DEBUG && !versionName.contains("dev", ignoreCase = true)) {
-        "$versionName-dev"
-      } else {
-        versionName
-      }
-    return BridgeSession.Hello(
-      nodeId = instanceId.value,
-      displayName = displayName.value,
-      token = token,
-      platform = "Android",
-      version = advertisedVersion,
-      deviceFamily = "Android",
-      modelIdentifier = modelIdentifier,
-      caps = buildCapabilities(),
-      commands = buildInvokeCommands(),
-    )
-  }
-
-  fun refreshBridgeHello() {
-    scope.launch {
-      if (!_isConnected.value) return@launch
-      val token = prefs.loadBridgeToken()
-      if (token.isNullOrBlank()) return@launch
-      session.updateHello(buildSessionHello(token))
     }
   }
 
-  fun connect(endpoint: BridgeEndpoint) {
+  private fun resolveModelIdentifier(): String? {
-    scope.launch {
+    return listOfNotNull(Build.MANUFACTURER, Build.MODEL)
-      _statusText.value = "Connecting…"
+      .joinToString(" ")
-      val storedToken = prefs.loadBridgeToken()
+      .trim()
-      val tls = resolveTlsParams(endpoint)
+      .ifEmpty { null }
-      val resolved =
+  }
-        if (storedToken.isNullOrBlank()) {
-          _statusText.value = "Pairing…"
-          BridgePairingClient().pairAndHello(
-            endpoint = endpoint,
-            hello = buildPairingHello(token = null),
-            tls = tls,
-            onTlsFingerprint = { fingerprint ->
-              prefs.saveBridgeTlsFingerprint(endpoint.stableId, fingerprint)
-            },
-          )
-        } else {
-          BridgePairingClient.PairResult(ok = true, token = storedToken.trim())
-        }
 
-      if (!resolved.ok || resolved.token.isNullOrBlank()) {
+  private fun buildClientInfo(clientId: String, clientMode: String): GatewayClientInfo {
-        val errorMessage = resolved.error?.trim().orEmpty().ifEmpty { "pairing required" }
+    return GatewayClientInfo(
-        _statusText.value = "Failed: $errorMessage"
+      id = clientId,
-        return@launch
+      displayName = displayName.value,
-      }
+      version = resolvedVersionName(),
+      platform = "android",
+      mode = clientMode,
+      instanceId = instanceId.value,
+      deviceFamily = "Android",
+      modelIdentifier = resolveModelIdentifier(),
+    )
+  }
 
-      val authToken = requireNotNull(resolved.token).trim()
+  private fun buildNodeConnectOptions(): GatewayConnectOptions {
-      prefs.saveBridgeToken(authToken)
+    return GatewayConnectOptions(
-      session.connect(
+      role = "node",
-        endpoint = endpoint,
+      scopes = emptyList(),
-        hello = buildSessionHello(token = authToken),
+      caps = buildCapabilities(),
-        tls = tls,
+      commands = buildInvokeCommands(),
-      )
+      permissions = emptyMap(),
-    }
+      client = buildClientInfo(clientId = "node-host", clientMode = "node"),
+    )
+  }
+
+  private fun buildOperatorConnectOptions(): GatewayConnectOptions {
+    return GatewayConnectOptions(
+      role = "operator",
+      scopes = emptyList(),
+      caps = emptyList(),
+      commands = emptyList(),
+      permissions = emptyMap(),
+      client = buildClientInfo(clientId = "clawdbot-control-ui", clientMode = "ui"),
+    )
+  }
+
+  fun refreshGatewayConnection() {
+    val endpoint = connectedEndpoint ?: return
+    val token = prefs.loadGatewayToken()
+    val password = prefs.loadGatewayPassword()
+    val tls = resolveTlsParams(endpoint)
+    operatorSession.connect(endpoint, token, password, buildOperatorConnectOptions(), tls)
+    nodeSession.connect(endpoint, token, password, buildNodeConnectOptions(), tls)
+    operatorSession.reconnect()
+    nodeSession.reconnect()
+  }
+
+  fun connect(endpoint: GatewayEndpoint) {
+    connectedEndpoint = endpoint
+    operatorStatusText = "Connecting…"
+    nodeStatusText = "Connecting…"
+    updateStatus()
+    val token = prefs.loadGatewayToken()
+    val password = prefs.loadGatewayPassword()
+    val tls = resolveTlsParams(endpoint)
+    operatorSession.connect(endpoint, token, password, buildOperatorConnectOptions(), tls)
+    nodeSession.connect(endpoint, token, password, buildNodeConnectOptions(), tls)
   }
 
   private fun hasRecordAudioPermission(): Boolean {
@@ -559,20 +590,32 @@ class NodeRuntime(context: Context) {
       _statusText.value = "Failed: invalid manual host/port"
       return
     }
-    connect(BridgeEndpoint.manual(host = host, port = port))
+    connect(GatewayEndpoint.manual(host = host, port = port))
   }
 
   fun disconnect() {
-    session.disconnect()
+    connectedEndpoint = null
+    operatorSession.disconnect()
+    nodeSession.disconnect()
   }
 
-  private fun resolveTlsParams(endpoint: BridgeEndpoint): BridgeTlsParams? {
+  private fun resolveTlsParams(endpoint: GatewayEndpoint): GatewayTlsParams? {
-    val stored = prefs.loadBridgeTlsFingerprint(endpoint.stableId)
+    val stored = prefs.loadGatewayTlsFingerprint(endpoint.stableId)
     val hinted = endpoint.tlsEnabled || !endpoint.tlsFingerprintSha256.isNullOrBlank()
     val manual = endpoint.stableId.startsWith("manual|")
 
+    if (manual) {
+      if (!manualTls.value) return null
+      return GatewayTlsParams(
+        required = true,
+        expectedFingerprint = endpoint.tlsFingerprintSha256 ?: stored,
+        allowTOFU = stored == null,
+        stableId = endpoint.stableId,
+      )
+    }
+
     if (hinted) {
-      return BridgeTlsParams(
+      return GatewayTlsParams(
         required = true,
         expectedFingerprint = endpoint.tlsFingerprintSha256 ?: stored,
         allowTOFU = stored == null,
@@ -581,7 +624,7 @@ class NodeRuntime(context: Context) {
     }
 
     if (!stored.isNullOrBlank()) {
-      return BridgeTlsParams(
+      return GatewayTlsParams(
         required = true,
         expectedFingerprint = stored,
         allowTOFU = false,
@@ -589,15 +632,6 @@ class NodeRuntime(context: Context) {
       )
     }
 
-    if (manual) {
-      return BridgeTlsParams(
-        required = false,
-        expectedFingerprint = null,
-        allowTOFU = true,
-        stableId = endpoint.stableId,
-      )
-    }
-
     return null
   }
 
@@ -637,11 +671,11 @@ class NodeRuntime(context: Context) {
           contextJson = contextJson,
         )
 
-      val connected = isConnected.value
+      val connected = nodeConnected
       var error: String? = null
       if (connected) {
         try {
-          session.sendEvent(
+          nodeSession.sendNodeEvent(
             event = "agent.request",
             payloadJson =
               buildJsonObject {
@@ -656,7 +690,7 @@ class NodeRuntime(context: Context) {
           error = e.message ?: "send failed"
         }
       } else {
-        error = "bridge not connected"
+        error = "gateway not connected"
       }
 
       try {
@@ -702,7 +736,7 @@ class NodeRuntime(context: Context) {
     chat.sendMessage(message = message, thinkingLevel = thinking, attachments = attachments)
   }
 
-  private fun handleBridgeEvent(event: String, payloadJson: String?) {
+  private fun handleGatewayEvent(event: String, payloadJson: String?) {
     if (event == "voicewake.changed") {
       if (payloadJson.isNullOrBlank()) return
       try {
@@ -716,8 +750,8 @@ class NodeRuntime(context: Context) {
       return
     }
 
-    talkMode.handleBridgeEvent(event, payloadJson)
+    talkMode.handleGatewayEvent(event, payloadJson)
-    chat.handleBridgeEvent(event, payloadJson)
+    chat.handleGatewayEvent(event, payloadJson)
   }
 
   private fun applyWakeWordsFromGateway(words: List<String>) {
@@ -738,7 +772,7 @@ class NodeRuntime(context: Context) {
         val jsonList = snapshot.joinToString(separator = ",") { it.toJsonString() }
         val params = """{"triggers":[$jsonList]}"""
         try {
-          session.request("voicewake.set", params)
+          operatorSession.request("voicewake.set", params)
         } catch (_: Throwable) {
           // ignore
         }
@@ -748,7 +782,7 @@ class NodeRuntime(context: Context) {
   private suspend fun refreshWakeWordsFromGateway() {
     if (!_isConnected.value) return
     try {
-      val res = session.request("voicewake.get", "{}")
+      val res = operatorSession.request("voicewake.get", "{}")
       val payload = json.parseToJsonElement(res).asObjectOrNull() ?: return
       val array = payload["triggers"] as? JsonArray ?: return
       val triggers = array.mapNotNull { it.asStringOrNull() }
@@ -761,7 +795,7 @@ class NodeRuntime(context: Context) {
   private suspend fun refreshBrandingFromGateway() {
     if (!_isConnected.value) return
     try {
-      val res = session.request("config.get", "{}")
+      val res = operatorSession.request("config.get", "{}")
       val root = json.parseToJsonElement(res).asObjectOrNull()
       val config = root?.get("config").asObjectOrNull()
       val ui = config?.get("ui").asObjectOrNull()
@@ -777,7 +811,7 @@ class NodeRuntime(context: Context) {
     }
   }
 
-  private suspend fun handleInvoke(command: String, paramsJson: String?): BridgeSession.InvokeResult {
+  private suspend fun handleInvoke(command: String, paramsJson: String?): GatewaySession.InvokeResult {
     if (
       command.startsWith(ClawdbotCanvasCommand.NamespacePrefix) ||
         command.startsWith(ClawdbotCanvasA2UICommand.NamespacePrefix) ||
@@ -785,14 +819,14 @@ class NodeRuntime(context: Context) {
         command.startsWith(ClawdbotScreenCommand.NamespacePrefix)
       ) {
       if (!isForeground.value) {
-        return BridgeSession.InvokeResult.error(
+        return GatewaySession.InvokeResult.error(
           code = "NODE_BACKGROUND_UNAVAILABLE",
           message = "NODE_BACKGROUND_UNAVAILABLE: canvas/camera/screen commands require foreground",
         )
       }
     }
     if (command.startsWith(ClawdbotCameraCommand.NamespacePrefix) && !cameraEnabled.value) {
-      return BridgeSession.InvokeResult.error(
+      return GatewaySession.InvokeResult.error(
         code = "CAMERA_DISABLED",
         message = "CAMERA_DISABLED: enable Camera in Settings",
       )
@@ -800,7 +834,7 @@ class NodeRuntime(context: Context) {
     if (command.startsWith(ClawdbotLocationCommand.NamespacePrefix) &&
       locationMode.value == LocationMode.Off
     ) {
-      return BridgeSession.InvokeResult.error(
+      return GatewaySession.InvokeResult.error(
         code = "LOCATION_DISABLED",
         message = "LOCATION_DISABLED: enable Location in Settings",
       )
@@ -810,18 +844,18 @@ class NodeRuntime(context: Context) {
       ClawdbotCanvasCommand.Present.rawValue -> {
         val url = CanvasController.parseNavigateUrl(paramsJson)
         canvas.navigate(url)
-        BridgeSession.InvokeResult.ok(null)
+        GatewaySession.InvokeResult.ok(null)
       }
-      ClawdbotCanvasCommand.Hide.rawValue -> BridgeSession.InvokeResult.ok(null)
+      ClawdbotCanvasCommand.Hide.rawValue -> GatewaySession.InvokeResult.ok(null)
       ClawdbotCanvasCommand.Navigate.rawValue -> {
         val url = CanvasController.parseNavigateUrl(paramsJson)
         canvas.navigate(url)
-        BridgeSession.InvokeResult.ok(null)
+        GatewaySession.InvokeResult.ok(null)
       }
       ClawdbotCanvasCommand.Eval.rawValue -> {
         val js =
           CanvasController.parseEvalJs(paramsJson)
-            ?: return BridgeSession.InvokeResult.error(
+            ?: return GatewaySession.InvokeResult.error(
               code = "INVALID_REQUEST",
               message = "INVALID_REQUEST: javaScript required",
             )
@@ -829,12 +863,12 @@ class NodeRuntime(context: Context) {
           try {
             canvas.eval(js)
           } catch (err: Throwable) {
-            return BridgeSession.InvokeResult.error(
+            return GatewaySession.InvokeResult.error(
               code = "NODE_BACKGROUND_UNAVAILABLE",
               message = "NODE_BACKGROUND_UNAVAILABLE: canvas unavailable",
             )
           }
-        BridgeSession.InvokeResult.ok("""{"result":${result.toJsonString()}}""")
+        GatewaySession.InvokeResult.ok("""{"result":${result.toJsonString()}}""")
       }
       ClawdbotCanvasCommand.Snapshot.rawValue -> {
         val snapshotParams = CanvasController.parseSnapshotParams(paramsJson)
@@ -846,51 +880,51 @@ class NodeRuntime(context: Context) {
               maxWidth = snapshotParams.maxWidth,
             )
           } catch (err: Throwable) {
-            return BridgeSession.InvokeResult.error(
+            return GatewaySession.InvokeResult.error(
               code = "NODE_BACKGROUND_UNAVAILABLE",
               message = "NODE_BACKGROUND_UNAVAILABLE: canvas unavailable",
             )
           }
-        BridgeSession.InvokeResult.ok("""{"format":"${snapshotParams.format.rawValue}","base64":"$base64"}""")
+        GatewaySession.InvokeResult.ok("""{"format":"${snapshotParams.format.rawValue}","base64":"$base64"}""")
       }
       ClawdbotCanvasA2UICommand.Reset.rawValue -> {
         val a2uiUrl = resolveA2uiHostUrl()
-          ?: return BridgeSession.InvokeResult.error(
+          ?: return GatewaySession.InvokeResult.error(
             code = "A2UI_HOST_NOT_CONFIGURED",
             message = "A2UI_HOST_NOT_CONFIGURED: gateway did not advertise canvas host",
           )
         val ready = ensureA2uiReady(a2uiUrl)
         if (!ready) {
-          return BridgeSession.InvokeResult.error(
+          return GatewaySession.InvokeResult.error(
             code = "A2UI_HOST_UNAVAILABLE",
             message = "A2UI host not reachable",
           )
         }
         val res = canvas.eval(a2uiResetJS)
-        BridgeSession.InvokeResult.ok(res)
+        GatewaySession.InvokeResult.ok(res)
       }
       ClawdbotCanvasA2UICommand.Push.rawValue, ClawdbotCanvasA2UICommand.PushJSONL.rawValue -> {
         val messages =
           try {
             decodeA2uiMessages(command, paramsJson)
           } catch (err: Throwable) {
-            return BridgeSession.InvokeResult.error(code = "INVALID_REQUEST", message = err.message ?: "invalid A2UI payload")
+            return GatewaySession.InvokeResult.error(code = "INVALID_REQUEST", message = err.message ?: "invalid A2UI payload")
           }
         val a2uiUrl = resolveA2uiHostUrl()
-          ?: return BridgeSession.InvokeResult.error(
+          ?: return GatewaySession.InvokeResult.error(
             code = "A2UI_HOST_NOT_CONFIGURED",
             message = "A2UI_HOST_NOT_CONFIGURED: gateway did not advertise canvas host",
           )
         val ready = ensureA2uiReady(a2uiUrl)
         if (!ready) {
-          return BridgeSession.InvokeResult.error(
+          return GatewaySession.InvokeResult.error(
             code = "A2UI_HOST_UNAVAILABLE",
             message = "A2UI host not reachable",
           )
         }
         val js = a2uiApplyMessagesJS(messages)
         val res = canvas.eval(js)
-        BridgeSession.InvokeResult.ok(res)
+        GatewaySession.InvokeResult.ok(res)
       }
       ClawdbotCameraCommand.Snap.rawValue -> {
         showCameraHud(message = "Taking photo…", kind = CameraHudKind.Photo)
@@ -901,10 +935,10 @@ class NodeRuntime(context: Context) {
           } catch (err: Throwable) {
             val (code, message) = invokeErrorFromThrowable(err)
             showCameraHud(message = message, kind = CameraHudKind.Error, autoHideMs = 2200)
-            return BridgeSession.InvokeResult.error(code = code, message = message)
+            return GatewaySession.InvokeResult.error(code = code, message = message)
           }
         showCameraHud(message = "Photo captured", kind = CameraHudKind.Success, autoHideMs = 1600)
-        BridgeSession.InvokeResult.ok(res.payloadJson)
+        GatewaySession.InvokeResult.ok(res.payloadJson)
       }
       ClawdbotCameraCommand.Clip.rawValue -> {
         val includeAudio = paramsJson?.contains("\"includeAudio\":true") != false
@@ -917,10 +951,10 @@ class NodeRuntime(context: Context) {
             } catch (err: Throwable) {
               val (code, message) = invokeErrorFromThrowable(err)
               showCameraHud(message = message, kind = CameraHudKind.Error, autoHideMs = 2400)
-              return BridgeSession.InvokeResult.error(code = code, message = message)
+              return GatewaySession.InvokeResult.error(code = code, message = message)
             }
           showCameraHud(message = "Clip captured", kind = CameraHudKind.Success, autoHideMs = 1800)
-          BridgeSession.InvokeResult.ok(res.payloadJson)
+          GatewaySession.InvokeResult.ok(res.payloadJson)
         } finally {
           if (includeAudio) externalAudioCaptureActive.value = false
         }
@@ -928,19 +962,19 @@ class NodeRuntime(context: Context) {
       ClawdbotLocationCommand.Get.rawValue -> {
         val mode = locationMode.value
         if (!isForeground.value && mode != LocationMode.Always) {
-          return BridgeSession.InvokeResult.error(
+          return GatewaySession.InvokeResult.error(
             code = "LOCATION_BACKGROUND_UNAVAILABLE",
             message = "LOCATION_BACKGROUND_UNAVAILABLE: background location requires Always",
           )
         }
         if (!hasFineLocationPermission() && !hasCoarseLocationPermission()) {
-          return BridgeSession.InvokeResult.error(
+          return GatewaySession.InvokeResult.error(
             code = "LOCATION_PERMISSION_REQUIRED",
             message = "LOCATION_PERMISSION_REQUIRED: grant Location permission",
           )
         }
         if (!isForeground.value && mode == LocationMode.Always && !hasBackgroundLocationPermission()) {
-          return BridgeSession.InvokeResult.error(
+          return GatewaySession.InvokeResult.error(
             code = "LOCATION_PERMISSION_REQUIRED",
             message = "LOCATION_PERMISSION_REQUIRED: enable Always in system Settings",
           )
@@ -967,15 +1001,15 @@ class NodeRuntime(context: Context) {
               timeoutMs = timeoutMs,
               isPrecise = accuracy == "precise",
             )
-          BridgeSession.InvokeResult.ok(payload.payloadJson)
+          GatewaySession.InvokeResult.ok(payload.payloadJson)
         } catch (err: TimeoutCancellationException) {
-          BridgeSession.InvokeResult.error(
+          GatewaySession.InvokeResult.error(
             code = "LOCATION_TIMEOUT",
             message = "LOCATION_TIMEOUT: no fix in time",
           )
         } catch (err: Throwable) {
           val message = err.message ?: "LOCATION_UNAVAILABLE: no fix"
-          BridgeSession.InvokeResult.error(code = "LOCATION_UNAVAILABLE", message = message)
+          GatewaySession.InvokeResult.error(code = "LOCATION_UNAVAILABLE", message = message)
         }
       }
       ClawdbotScreenCommand.Record.rawValue -> {
@@ -987,9 +1021,9 @@ class NodeRuntime(context: Context) {
               screenRecorder.record(paramsJson)
             } catch (err: Throwable) {
               val (code, message) = invokeErrorFromThrowable(err)
-              return BridgeSession.InvokeResult.error(code = code, message = message)
+              return GatewaySession.InvokeResult.error(code = code, message = message)
             }
-          BridgeSession.InvokeResult.ok(res.payloadJson)
+          GatewaySession.InvokeResult.ok(res.payloadJson)
         } finally {
           _screenRecordActive.value = false
         }
@@ -997,16 +1031,16 @@ class NodeRuntime(context: Context) {
       ClawdbotSmsCommand.Send.rawValue -> {
         val res = sms.send(paramsJson)
         if (res.ok) {
-          BridgeSession.InvokeResult.ok(res.payloadJson)
+          GatewaySession.InvokeResult.ok(res.payloadJson)
         } else {
           val error = res.error ?: "SMS_SEND_FAILED"
           val idx = error.indexOf(':')
           val code = if (idx > 0) error.substring(0, idx).trim() else "SMS_SEND_FAILED"
-          BridgeSession.InvokeResult.error(code = code, message = error)
+          GatewaySession.InvokeResult.error(code = code, message = error)
         }
       }
       else ->
-        BridgeSession.InvokeResult.error(
+        GatewaySession.InvokeResult.error(
           code = "INVALID_REQUEST",
           message = "INVALID_REQUEST: unknown command",
         )
@@ -1062,7 +1096,9 @@ class NodeRuntime(context: Context) {
   }
 
   private fun resolveA2uiHostUrl(): String? {
-    val raw = session.currentCanvasHostUrl()?.trim().orEmpty()
+    val nodeRaw = nodeSession.currentCanvasHostUrl()?.trim().orEmpty()
+    val operatorRaw = operatorSession.currentCanvasHostUrl()?.trim().orEmpty()
+    val raw = if (nodeRaw.isNotBlank()) nodeRaw else operatorRaw
     if (raw.isBlank()) return null
     val base = raw.trimEnd('/')
     return "${base}/__clawdbot__/a2ui/?platform=android"

apps/android/app/src/main/java/com/clawdbot/android/SecurePrefs.kt

@@ -58,17 +58,30 @@ class SecurePrefs(context: Context) {
   private val _preventSleep = MutableStateFlow(prefs.getBoolean("screen.preventSleep", true))
   val preventSleep: StateFlow<Boolean> = _preventSleep
 
-  private val _manualEnabled = MutableStateFlow(prefs.getBoolean("bridge.manual.enabled", false))
+  private val _manualEnabled =
+    MutableStateFlow(readBoolWithMigration("gateway.manual.enabled", "bridge.manual.enabled", false))
   val manualEnabled: StateFlow<Boolean> = _manualEnabled
 
-  private val _manualHost = MutableStateFlow(prefs.getString("bridge.manual.host", "")!!)
+  private val _manualHost =
+    MutableStateFlow(readStringWithMigration("gateway.manual.host", "bridge.manual.host", ""))
   val manualHost: StateFlow<String> = _manualHost
 
-  private val _manualPort = MutableStateFlow(prefs.getInt("bridge.manual.port", 18790))
+  private val _manualPort =
+    MutableStateFlow(readIntWithMigration("gateway.manual.port", "bridge.manual.port", 18789))
   val manualPort: StateFlow<Int> = _manualPort
 
+  private val _manualTls =
+    MutableStateFlow(readBoolWithMigration("gateway.manual.tls", null, true))
+  val manualTls: StateFlow<Boolean> = _manualTls
+
   private val _lastDiscoveredStableId =
-    MutableStateFlow(prefs.getString("bridge.lastDiscoveredStableId", "")!!)
+    MutableStateFlow(
+      readStringWithMigration(
+        "gateway.lastDiscoveredStableID",
+        "bridge.lastDiscoveredStableId",
+        "",
+      ),
+    )
   val lastDiscoveredStableId: StateFlow<String> = _lastDiscoveredStableId
 
   private val _canvasDebugStatusEnabled =
@@ -86,7 +99,7 @@ class SecurePrefs(context: Context) {
 
   fun setLastDiscoveredStableId(value: String) {
     val trimmed = value.trim()
-    prefs.edit { putString("bridge.lastDiscoveredStableId", trimmed) }
+    prefs.edit { putString("gateway.lastDiscoveredStableID", trimmed) }
     _lastDiscoveredStableId.value = trimmed
   }
 
@@ -117,43 +130,62 @@ class SecurePrefs(context: Context) {
   }
 
   fun setManualEnabled(value: Boolean) {
-    prefs.edit { putBoolean("bridge.manual.enabled", value) }
+    prefs.edit { putBoolean("gateway.manual.enabled", value) }
     _manualEnabled.value = value
   }
 
   fun setManualHost(value: String) {
     val trimmed = value.trim()
-    prefs.edit { putString("bridge.manual.host", trimmed) }
+    prefs.edit { putString("gateway.manual.host", trimmed) }
     _manualHost.value = trimmed
   }
 
   fun setManualPort(value: Int) {
-    prefs.edit { putInt("bridge.manual.port", value) }
+    prefs.edit { putInt("gateway.manual.port", value) }
     _manualPort.value = value
   }
 
+  fun setManualTls(value: Boolean) {
+    prefs.edit { putBoolean("gateway.manual.tls", value) }
+    _manualTls.value = value
+  }
+
   fun setCanvasDebugStatusEnabled(value: Boolean) {
     prefs.edit { putBoolean("canvas.debugStatusEnabled", value) }
     _canvasDebugStatusEnabled.value = value
   }
 
-  fun loadBridgeToken(): String? {
+  fun loadGatewayToken(): String? {
-    val key = "bridge.token.${_instanceId.value}"
+    val key = "gateway.token.${_instanceId.value}"
-    return prefs.getString(key, null)
+    val stored = prefs.getString(key, null)?.trim()
+    if (!stored.isNullOrEmpty()) return stored
+    val legacy = prefs.getString("bridge.token.${_instanceId.value}", null)?.trim()
+    return legacy?.takeIf { it.isNotEmpty() }
   }
 
-  fun saveBridgeToken(token: String) {
+  fun saveGatewayToken(token: String) {
-    val key = "bridge.token.${_instanceId.value}"
+    val key = "gateway.token.${_instanceId.value}"
     prefs.edit { putString(key, token.trim()) }
   }
 
-  fun loadBridgeTlsFingerprint(stableId: String): String? {
+  fun loadGatewayPassword(): String? {
-    val key = "bridge.tls.$stableId"
+    val key = "gateway.password.${_instanceId.value}"
+    val stored = prefs.getString(key, null)?.trim()
+    return stored?.takeIf { it.isNotEmpty() }
+  }
+
+  fun saveGatewayPassword(password: String) {
+    val key = "gateway.password.${_instanceId.value}"
+    prefs.edit { putString(key, password.trim()) }
+  }
+
+  fun loadGatewayTlsFingerprint(stableId: String): String? {
+    val key = "gateway.tls.$stableId"
     return prefs.getString(key, null)?.trim()?.takeIf { it.isNotEmpty() }
   }
 
-  fun saveBridgeTlsFingerprint(stableId: String, fingerprint: String) {
+  fun saveGatewayTlsFingerprint(stableId: String, fingerprint: String) {
-    val key = "bridge.tls.$stableId"
+    val key = "gateway.tls.$stableId"
     prefs.edit { putString(key, fingerprint.trim()) }
   }
 
@@ -225,4 +257,40 @@ class SecurePrefs(context: Context) {
       defaultWakeWords
     }
   }
+
+  private fun readBoolWithMigration(newKey: String, oldKey: String?, defaultValue: Boolean): Boolean {
+    if (prefs.contains(newKey)) {
+      return prefs.getBoolean(newKey, defaultValue)
+    }
+    if (oldKey != null && prefs.contains(oldKey)) {
+      val value = prefs.getBoolean(oldKey, defaultValue)
+      prefs.edit { putBoolean(newKey, value) }
+      return value
+    }
+    return defaultValue
+  }
+
+  private fun readStringWithMigration(newKey: String, oldKey: String?, defaultValue: String): String {
+    if (prefs.contains(newKey)) {
+      return prefs.getString(newKey, defaultValue) ?: defaultValue
+    }
+    if (oldKey != null && prefs.contains(oldKey)) {
+      val value = prefs.getString(oldKey, defaultValue) ?: defaultValue
+      prefs.edit { putString(newKey, value) }
+      return value
+    }
+    return defaultValue
+  }
+
+  private fun readIntWithMigration(newKey: String, oldKey: String?, defaultValue: Int): Int {
+    if (prefs.contains(newKey)) {
+      return prefs.getInt(newKey, defaultValue)
+    }
+    if (oldKey != null && prefs.contains(oldKey)) {
+      val value = prefs.getInt(oldKey, defaultValue)
+      prefs.edit { putInt(newKey, value) }
+      return value
+    }
+    return defaultValue
+  }
 }

apps/android/app/src/main/java/com/clawdbot/android/chat/ChatController.kt

@@ -1,6 +1,6 @@
 package com.clawdbot.android.chat
 
-import com.clawdbot.android.bridge.BridgeSession
+import com.clawdbot.android.gateway.GatewaySession
 import java.util.UUID
 import java.util.concurrent.ConcurrentHashMap
 import kotlinx.coroutines.CoroutineScope
@@ -20,8 +20,9 @@ import kotlinx.serialization.json.buildJsonObject
 
 class ChatController(
   private val scope: CoroutineScope,
-  private val session: BridgeSession,
+  private val session: GatewaySession,
   private val json: Json,
+  private val supportsChatSubscribe: Boolean,
 ) {
   private val _sessionKey = MutableStateFlow("main")
   val sessionKey: StateFlow<String> = _sessionKey.asStateFlow()
@@ -224,7 +225,7 @@ class ChatController(
     }
   }
 
-  fun handleBridgeEvent(event: String, payloadJson: String?) {
+  fun handleGatewayEvent(event: String, payloadJson: String?) {
     when (event) {
       "tick" -> {
         scope.launch { pollHealthIfNeeded(force = false) }
@@ -259,10 +260,12 @@ class ChatController(
 
     val key = _sessionKey.value
     try {
-      try {
+      if (supportsChatSubscribe) {
-        session.sendEvent("chat.subscribe", """{"sessionKey":"$key"}""")
+        try {
-      } catch (_: Throwable) {
+          session.sendNodeEvent("chat.subscribe", """{"sessionKey":"$key"}""")
-        // best-effort
+        } catch (_: Throwable) {
+          // best-effort
+        }
       }
 
       val historyJson = session.request("chat.history", """{"sessionKey":"$key"}""")

apps/android/app/src/main/java/com/clawdbot/android/gateway/DeviceIdentityStore.kt

@@ -0,0 +1,146 @@
+package com.clawdbot.android.gateway
+
+import android.content.Context
+import android.util.Base64
+import java.io.File
+import java.security.KeyFactory
+import java.security.KeyPairGenerator
+import java.security.MessageDigest
+import java.security.Signature
+import java.security.spec.PKCS8EncodedKeySpec
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
+
+@Serializable
+data class DeviceIdentity(
+  val deviceId: String,
+  val publicKeyRawBase64: String,
+  val privateKeyPkcs8Base64: String,
+  val createdAtMs: Long,
+)
+
+class DeviceIdentityStore(context: Context) {
+  private val json = Json { ignoreUnknownKeys = true }
+  private val identityFile = File(context.filesDir, "clawdbot/identity/device.json")
+
+  @Synchronized
+  fun loadOrCreate(): DeviceIdentity {
+    val existing = load()
+    if (existing != null) {
+      val derived = deriveDeviceId(existing.publicKeyRawBase64)
+      if (derived != null && derived != existing.deviceId) {
+        val updated = existing.copy(deviceId = derived)
+        save(updated)
+        return updated
+      }
+      return existing
+    }
+    val fresh = generate()
+    save(fresh)
+    return fresh
+  }
+
+  fun signPayload(payload: String, identity: DeviceIdentity): String? {
+    return try {
+      val privateKeyBytes = Base64.decode(identity.privateKeyPkcs8Base64, Base64.DEFAULT)
+      val keySpec = PKCS8EncodedKeySpec(privateKeyBytes)
+      val keyFactory = KeyFactory.getInstance("Ed25519")
+      val privateKey = keyFactory.generatePrivate(keySpec)
+      val signature = Signature.getInstance("Ed25519")
+      signature.initSign(privateKey)
+      signature.update(payload.toByteArray(Charsets.UTF_8))
+      base64UrlEncode(signature.sign())
+    } catch (_: Throwable) {
+      null
+    }
+  }
+
+  fun publicKeyBase64Url(identity: DeviceIdentity): String? {
+    return try {
+      val raw = Base64.decode(identity.publicKeyRawBase64, Base64.DEFAULT)
+      base64UrlEncode(raw)
+    } catch (_: Throwable) {
+      null
+    }
+  }
+
+  private fun load(): DeviceIdentity? {
+    return try {
+      if (!identityFile.exists()) return null
+      val raw = identityFile.readText(Charsets.UTF_8)
+      val decoded = json.decodeFromString(DeviceIdentity.serializer(), raw)
+      if (decoded.deviceId.isBlank() ||
+        decoded.publicKeyRawBase64.isBlank() ||
+        decoded.privateKeyPkcs8Base64.isBlank()
+      ) {
+        null
+      } else {
+        decoded
+      }
+    } catch (_: Throwable) {
+      null
+    }
+  }
+
+  private fun save(identity: DeviceIdentity) {
+    try {
+      identityFile.parentFile?.mkdirs()
+      val encoded = json.encodeToString(DeviceIdentity.serializer(), identity)
+      identityFile.writeText(encoded, Charsets.UTF_8)
+    } catch (_: Throwable) {
+      // best-effort only
+    }
+  }
+
+  private fun generate(): DeviceIdentity {
+    val keyPair = KeyPairGenerator.getInstance("Ed25519").generateKeyPair()
+    val spki = keyPair.public.encoded
+    val rawPublic = stripSpkiPrefix(spki)
+    val deviceId = sha256Hex(rawPublic)
+    val privateKey = keyPair.private.encoded
+    return DeviceIdentity(
+      deviceId = deviceId,
+      publicKeyRawBase64 = Base64.encodeToString(rawPublic, Base64.NO_WRAP),
+      privateKeyPkcs8Base64 = Base64.encodeToString(privateKey, Base64.NO_WRAP),
+      createdAtMs = System.currentTimeMillis(),
+    )
+  }
+
+  private fun deriveDeviceId(publicKeyRawBase64: String): String? {
+    return try {
+      val raw = Base64.decode(publicKeyRawBase64, Base64.DEFAULT)
+      sha256Hex(raw)
+    } catch (_: Throwable) {
+      null
+    }
+  }
+
+  private fun stripSpkiPrefix(spki: ByteArray): ByteArray {
+    if (spki.size == ED25519_SPKI_PREFIX.size + 32 &&
+      spki.copyOfRange(0, ED25519_SPKI_PREFIX.size).contentEquals(ED25519_SPKI_PREFIX)
+    ) {
+      return spki.copyOfRange(ED25519_SPKI_PREFIX.size, spki.size)
+    }
+    return spki
+  }
+
+  private fun sha256Hex(data: ByteArray): String {
+    val digest = MessageDigest.getInstance("SHA-256").digest(data)
+    val out = StringBuilder(digest.size * 2)
+    for (byte in digest) {
+      out.append(String.format("%02x", byte))
+    }
+    return out.toString()
+  }
+
+  private fun base64UrlEncode(data: ByteArray): String {
+    return Base64.encodeToString(data, Base64.URL_SAFE or Base64.NO_WRAP or Base64.NO_PADDING)
+  }
+
+  companion object {
+    private val ED25519_SPKI_PREFIX =
+      byteArrayOf(
+        0x30, 0x2a, 0x30, 0x05, 0x06, 0x03, 0x2b, 0x65, 0x70, 0x03, 0x21, 0x00,
+      )
+  }
+}

apps/android/app/src/main/java/com/clawdbot/android/gateway/GatewayDiscovery.kt

@@ -0,0 +1,520 @@
+package com.clawdbot.android.gateway
+
+import android.content.Context
+import android.net.ConnectivityManager
+import android.net.DnsResolver
+import android.net.NetworkCapabilities
+import android.net.nsd.NsdManager
+import android.net.nsd.NsdServiceInfo
+import android.os.CancellationSignal
+import android.util.Log
+import com.clawdbot.android.bridge.BonjourEscapes
+import java.io.IOException
+import java.net.InetSocketAddress
+import java.nio.ByteBuffer
+import java.nio.charset.CodingErrorAction
+import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.Executor
+import java.util.concurrent.Executors
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.suspendCancellableCoroutine
+import org.xbill.DNS.AAAARecord
+import org.xbill.DNS.ARecord
+import org.xbill.DNS.DClass
+import org.xbill.DNS.ExtendedResolver
+import org.xbill.DNS.Message
+import org.xbill.DNS.Name
+import org.xbill.DNS.PTRRecord
+import org.xbill.DNS.Record
+import org.xbill.DNS.Rcode
+import org.xbill.DNS.Resolver
+import org.xbill.DNS.SRVRecord
+import org.xbill.DNS.Section
+import org.xbill.DNS.SimpleResolver
+import org.xbill.DNS.TextParseException
+import org.xbill.DNS.TXTRecord
+import org.xbill.DNS.Type
+import kotlin.coroutines.resume
+import kotlin.coroutines.resumeWithException
+
+@Suppress("DEPRECATION")
+class GatewayDiscovery(
+  context: Context,
+  private val scope: CoroutineScope,
+) {
+  private val nsd = context.getSystemService(NsdManager::class.java)
+  private val connectivity = context.getSystemService(ConnectivityManager::class.java)
+  private val dns = DnsResolver.getInstance()
+  private val serviceType = "_clawdbot-gateway._tcp."
+  private val wideAreaDomain = "clawdbot.internal."
+  private val logTag = "Clawdbot/GatewayDiscovery"
+
+  private val localById = ConcurrentHashMap<String, GatewayEndpoint>()
+  private val unicastById = ConcurrentHashMap<String, GatewayEndpoint>()
+  private val _gateways = MutableStateFlow<List<GatewayEndpoint>>(emptyList())
+  val gateways: StateFlow<List<GatewayEndpoint>> = _gateways.asStateFlow()
+
+  private val _statusText = MutableStateFlow("Searching…")
+  val statusText: StateFlow<String> = _statusText.asStateFlow()
+
+  private var unicastJob: Job? = null
+  private val dnsExecutor: Executor = Executors.newCachedThreadPool()
+
+  @Volatile private var lastWideAreaRcode: Int? = null
+  @Volatile private var lastWideAreaCount: Int = 0
+
+  private val discoveryListener =
+    object : NsdManager.DiscoveryListener {
+      override fun onStartDiscoveryFailed(serviceType: String, errorCode: Int) {}
+      override fun onStopDiscoveryFailed(serviceType: String, errorCode: Int) {}
+      override fun onDiscoveryStarted(serviceType: String) {}
+      override fun onDiscoveryStopped(serviceType: String) {}
+
+      override fun onServiceFound(serviceInfo: NsdServiceInfo) {
+        if (serviceInfo.serviceType != this@GatewayDiscovery.serviceType) return
+        resolve(serviceInfo)
+      }
+
+      override fun onServiceLost(serviceInfo: NsdServiceInfo) {
+        val serviceName = BonjourEscapes.decode(serviceInfo.serviceName)
+        val id = stableId(serviceName, "local.")
+        localById.remove(id)
+        publish()
+      }
+    }
+
+  init {
+    startLocalDiscovery()
+    startUnicastDiscovery(wideAreaDomain)
+  }
+
+  private fun startLocalDiscovery() {
+    try {
+      nsd.discoverServices(serviceType, NsdManager.PROTOCOL_DNS_SD, discoveryListener)
+    } catch (_: Throwable) {
+      // ignore (best-effort)
+    }
+  }
+
+  private fun stopLocalDiscovery() {
+    try {
+      nsd.stopServiceDiscovery(discoveryListener)
+    } catch (_: Throwable) {
+      // ignore (best-effort)
+    }
+  }
+
+  private fun startUnicastDiscovery(domain: String) {
+    unicastJob =
+      scope.launch(Dispatchers.IO) {
+        while (true) {
+          try {
+            refreshUnicast(domain)
+          } catch (_: Throwable) {
+            // ignore (best-effort)
+          }
+          delay(5000)
+        }
+      }
+  }
+
+  private fun resolve(serviceInfo: NsdServiceInfo) {
+    nsd.resolveService(
+      serviceInfo,
+      object : NsdManager.ResolveListener {
+        override fun onResolveFailed(serviceInfo: NsdServiceInfo, errorCode: Int) {}
+
+      override fun onServiceResolved(resolved: NsdServiceInfo) {
+        val host = resolved.host?.hostAddress ?: return
+        val port = resolved.port
+        if (port <= 0) return
+
+        val rawServiceName = resolved.serviceName
+        val serviceName = BonjourEscapes.decode(rawServiceName)
+        val displayName = BonjourEscapes.decode(txt(resolved, "displayName") ?: serviceName)
+        val lanHost = txt(resolved, "lanHost")
+        val tailnetDns = txt(resolved, "tailnetDns")
+        val gatewayPort = txtInt(resolved, "gatewayPort")
+        val canvasPort = txtInt(resolved, "canvasPort")
+        val tlsEnabled = txtBool(resolved, "gatewayTls")
+        val tlsFingerprint = txt(resolved, "gatewayTlsSha256")
+        val id = stableId(serviceName, "local.")
+        localById[id] =
+          GatewayEndpoint(
+            stableId = id,
+            name = displayName,
+            host = host,
+            port = port,
+            lanHost = lanHost,
+            tailnetDns = tailnetDns,
+            gatewayPort = gatewayPort,
+            canvasPort = canvasPort,
+            tlsEnabled = tlsEnabled,
+            tlsFingerprintSha256 = tlsFingerprint,
+          )
+        publish()
+      }
+    },
+  )
+  }
+
+  private fun publish() {
+    _gateways.value =
+      (localById.values + unicastById.values).sortedBy { it.name.lowercase() }
+    _statusText.value = buildStatusText()
+  }
+
+  private fun buildStatusText(): String {
+    val localCount = localById.size
+    val wideRcode = lastWideAreaRcode
+    val wideCount = lastWideAreaCount
+
+    val wide =
+      when (wideRcode) {
+        null -> "Wide: ?"
+        Rcode.NOERROR -> "Wide: $wideCount"
+        Rcode.NXDOMAIN -> "Wide: NXDOMAIN"
+        else -> "Wide: ${Rcode.string(wideRcode)}"
+      }
+
+    return when {
+      localCount == 0 && wideRcode == null -> "Searching for gateways…"
+      localCount == 0 -> "$wide"
+      else -> "Local: $localCount • $wide"
+    }
+  }
+
+  private fun stableId(serviceName: String, domain: String): String {
+    return "${serviceType}|${domain}|${normalizeName(serviceName)}"
+  }
+
+  private fun normalizeName(raw: String): String {
+    return raw.trim().split(Regex("\\s+")).joinToString(" ")
+  }
+
+  private fun txt(info: NsdServiceInfo, key: String): String? {
+    val bytes = info.attributes[key] ?: return null
+    return try {
+      String(bytes, Charsets.UTF_8).trim().ifEmpty { null }
+    } catch (_: Throwable) {
+      null
+    }
+  }
+
+  private fun txtInt(info: NsdServiceInfo, key: String): Int? {
+    return txt(info, key)?.toIntOrNull()
+  }
+
+  private fun txtBool(info: NsdServiceInfo, key: String): Boolean {
+    val raw = txt(info, key)?.trim()?.lowercase() ?: return false
+    return raw == "1" || raw == "true" || raw == "yes"
+  }
+
+  private suspend fun refreshUnicast(domain: String) {
+    val ptrName = "${serviceType}${domain}"
+    val ptrMsg = lookupUnicastMessage(ptrName, Type.PTR) ?: return
+    val ptrRecords = records(ptrMsg, Section.ANSWER).mapNotNull { it as? PTRRecord }
+
+    val next = LinkedHashMap<String, GatewayEndpoint>()
+    for (ptr in ptrRecords) {
+      val instanceFqdn = ptr.target.toString()
+      val srv =
+        recordByName(ptrMsg, instanceFqdn, Type.SRV) as? SRVRecord
+          ?: run {
+            val msg = lookupUnicastMessage(instanceFqdn, Type.SRV) ?: return@run null
+            recordByName(msg, instanceFqdn, Type.SRV) as? SRVRecord
+          }
+          ?: continue
+      val port = srv.port
+      if (port <= 0) continue
+
+      val targetFqdn = srv.target.toString()
+      val host =
+        resolveHostFromMessage(ptrMsg, targetFqdn)
+          ?: resolveHostFromMessage(lookupUnicastMessage(instanceFqdn, Type.SRV), targetFqdn)
+          ?: resolveHostUnicast(targetFqdn)
+          ?: continue
+
+      val txtFromPtr =
+        recordsByName(ptrMsg, Section.ADDITIONAL)[keyName(instanceFqdn)]
+          .orEmpty()
+          .mapNotNull { it as? TXTRecord }
+      val txt =
+        if (txtFromPtr.isNotEmpty()) {
+          txtFromPtr
+        } else {
+          val msg = lookupUnicastMessage(instanceFqdn, Type.TXT)
+          records(msg, Section.ANSWER).mapNotNull { it as? TXTRecord }
+        }
+      val instanceName = BonjourEscapes.decode(decodeInstanceName(instanceFqdn, domain))
+      val displayName = BonjourEscapes.decode(txtValue(txt, "displayName") ?: instanceName)
+      val lanHost = txtValue(txt, "lanHost")
+      val tailnetDns = txtValue(txt, "tailnetDns")
+      val gatewayPort = txtIntValue(txt, "gatewayPort")
+      val canvasPort = txtIntValue(txt, "canvasPort")
+      val tlsEnabled = txtBoolValue(txt, "gatewayTls")
+      val tlsFingerprint = txtValue(txt, "gatewayTlsSha256")
+      val id = stableId(instanceName, domain)
+      next[id] =
+        GatewayEndpoint(
+          stableId = id,
+          name = displayName,
+          host = host,
+          port = port,
+          lanHost = lanHost,
+          tailnetDns = tailnetDns,
+          gatewayPort = gatewayPort,
+          canvasPort = canvasPort,
+          tlsEnabled = tlsEnabled,
+          tlsFingerprintSha256 = tlsFingerprint,
+        )
+    }
+
+    unicastById.clear()
+    unicastById.putAll(next)
+    lastWideAreaRcode = ptrMsg.header.rcode
+    lastWideAreaCount = next.size
+    publish()
+
+    if (next.isEmpty()) {
+      Log.d(
+        logTag,
+        "wide-area discovery: 0 results for $ptrName (rcode=${Rcode.string(ptrMsg.header.rcode)})",
+      )
+    }
+  }
+
+  private fun decodeInstanceName(instanceFqdn: String, domain: String): String {
+    val suffix = "${serviceType}${domain}"
+    val withoutSuffix =
+      if (instanceFqdn.endsWith(suffix)) {
+        instanceFqdn.removeSuffix(suffix)
+      } else {
+        instanceFqdn.substringBefore(serviceType)
+      }
+    return normalizeName(stripTrailingDot(withoutSuffix))
+  }
+
+  private fun stripTrailingDot(raw: String): String {
+    return raw.removeSuffix(".")
+  }
+
+  private suspend fun lookupUnicastMessage(name: String, type: Int): Message? {
+    val query =
+      try {
+        Message.newQuery(
+          org.xbill.DNS.Record.newRecord(
+            Name.fromString(name),
+            type,
+            DClass.IN,
+          ),
+        )
+      } catch (_: TextParseException) {
+        return null
+      }
+
+    val system = queryViaSystemDns(query)
+    if (records(system, Section.ANSWER).any { it.type == type }) return system
+
+    val direct = createDirectResolver() ?: return system
+    return try {
+      val msg = direct.send(query)
+      if (records(msg, Section.ANSWER).any { it.type == type }) msg else system
+    } catch (_: Throwable) {
+      system
+    }
+  }
+
+  private suspend fun queryViaSystemDns(query: Message): Message? {
+    val network = preferredDnsNetwork()
+    val bytes =
+      try {
+        rawQuery(network, query.toWire())
+      } catch (_: Throwable) {
+        return null
+      }
+
+    return try {
+      Message(bytes)
+    } catch (_: IOException) {
+      null
+    }
+  }
+
+  private fun records(msg: Message?, section: Int): List<Record> {
+    return msg?.getSectionArray(section)?.toList() ?: emptyList()
+  }
+
+  private fun keyName(raw: String): String {
+    return raw.trim().lowercase()
+  }
+
+  private fun recordsByName(msg: Message, section: Int): Map<String, List<Record>> {
+    val next = LinkedHashMap<String, MutableList<Record>>()
+    for (r in records(msg, section)) {
+      val name = r.name?.toString() ?: continue
+      next.getOrPut(keyName(name)) { mutableListOf() }.add(r)
+    }
+    return next
+  }
+
+  private fun recordByName(msg: Message, fqdn: String, type: Int): Record? {
+    val key = keyName(fqdn)
+    val byNameAnswer = recordsByName(msg, Section.ANSWER)
+    val fromAnswer = byNameAnswer[key].orEmpty().firstOrNull { it.type == type }
+    if (fromAnswer != null) return fromAnswer
+
+    val byNameAdditional = recordsByName(msg, Section.ADDITIONAL)
+    return byNameAdditional[key].orEmpty().firstOrNull { it.type == type }
+  }
+
+  private fun resolveHostFromMessage(msg: Message?, hostname: String): String? {
+    val m = msg ?: return null
+    val key = keyName(hostname)
+    val additional = recordsByName(m, Section.ADDITIONAL)[key].orEmpty()
+    val a = additional.mapNotNull { it as? ARecord }.mapNotNull { it.address?.hostAddress }
+    val aaaa = additional.mapNotNull { it as? AAAARecord }.mapNotNull { it.address?.hostAddress }
+    return a.firstOrNull() ?: aaaa.firstOrNull()
+  }
+
+  private fun preferredDnsNetwork(): android.net.Network? {
+    val cm = connectivity ?: return null
+
+    // Prefer VPN (Tailscale) when present; otherwise use the active network.
+    cm.allNetworks.firstOrNull { n ->
+      val caps = cm.getNetworkCapabilities(n) ?: return@firstOrNull false
+      caps.hasTransport(NetworkCapabilities.TRANSPORT_VPN)
+    }?.let { return it }
+
+    return cm.activeNetwork
+  }
+
+  private fun createDirectResolver(): Resolver? {
+    val cm = connectivity ?: return null
+
+    val candidateNetworks =
+      buildList {
+        cm.allNetworks
+          .firstOrNull { n ->
+            val caps = cm.getNetworkCapabilities(n) ?: return@firstOrNull false
+            caps.hasTransport(NetworkCapabilities.TRANSPORT_VPN)
+          }?.let(::add)
+        cm.activeNetwork?.let(::add)
+      }.distinct()
+
+    val servers =
+      candidateNetworks
+        .asSequence()
+        .flatMap { n ->
+          cm.getLinkProperties(n)?.dnsServers?.asSequence() ?: emptySequence()
+        }
+        .distinctBy { it.hostAddress ?: it.toString() }
+        .toList()
+    if (servers.isEmpty()) return null
+
+    return try {
+      val resolvers =
+        servers.mapNotNull { addr ->
+          try {
+            SimpleResolver().apply {
+              setAddress(InetSocketAddress(addr, 53))
+              setTimeout(3)
+            }
+          } catch (_: Throwable) {
+            null
+          }
+        }
+      if (resolvers.isEmpty()) return null
+      ExtendedResolver(resolvers.toTypedArray()).apply { setTimeout(3) }
+    } catch (_: Throwable) {
+      null
+    }
+  }
+
+  private suspend fun rawQuery(network: android.net.Network?, wireQuery: ByteArray): ByteArray =
+    suspendCancellableCoroutine { cont ->
+      val signal = CancellationSignal()
+      cont.invokeOnCancellation { signal.cancel() }
+
+      dns.rawQuery(
+        network,
+        wireQuery,
+        DnsResolver.FLAG_EMPTY,
+        dnsExecutor,
+        signal,
+        object : DnsResolver.Callback<ByteArray> {
+          override fun onAnswer(answer: ByteArray, rcode: Int) {
+            cont.resume(answer)
+          }
+
+          override fun onError(error: DnsResolver.DnsException) {
+            cont.resumeWithException(error)
+          }
+        },
+      )
+    }
+
+  private fun txtValue(records: List<TXTRecord>, key: String): String? {
+    val prefix = "$key="
+    for (r in records) {
+      val strings: List<String> =
+        try {
+          r.strings.mapNotNull { it as? String }
+        } catch (_: Throwable) {
+          emptyList()
+        }
+      for (s in strings) {
+        val trimmed = decodeDnsTxtString(s).trim()
+        if (trimmed.startsWith(prefix)) {
+          return trimmed.removePrefix(prefix).trim().ifEmpty { null }
+        }
+      }
+    }
+    return null
+  }
+
+  private fun txtIntValue(records: List<TXTRecord>, key: String): Int? {
+    return txtValue(records, key)?.toIntOrNull()
+  }
+
+  private fun txtBoolValue(records: List<TXTRecord>, key: String): Boolean {
+    val raw = txtValue(records, key)?.trim()?.lowercase() ?: return false
+    return raw == "1" || raw == "true" || raw == "yes"
+  }
+
+  private fun decodeDnsTxtString(raw: String): String {
+    // dnsjava treats TXT as opaque bytes and decodes as ISO-8859-1 to preserve bytes.
+    // Our TXT payload is UTF-8 (written by the gateway), so re-decode when possible.
+    val bytes = raw.toByteArray(Charsets.ISO_8859_1)
+    val decoder =
+      Charsets.UTF_8
+        .newDecoder()
+        .onMalformedInput(CodingErrorAction.REPORT)
+        .onUnmappableCharacter(CodingErrorAction.REPORT)
+    return try {
+      decoder.decode(ByteBuffer.wrap(bytes)).toString()
+    } catch (_: Throwable) {
+      raw
+    }
+  }
+
+  private suspend fun resolveHostUnicast(hostname: String): String? {
+    val a =
+      records(lookupUnicastMessage(hostname, Type.A), Section.ANSWER)
+        .mapNotNull { it as? ARecord }
+        .mapNotNull { it.address?.hostAddress }
+    val aaaa =
+      records(lookupUnicastMessage(hostname, Type.AAAA), Section.ANSWER)
+        .mapNotNull { it as? AAAARecord }
+        .mapNotNull { it.address?.hostAddress }
+
+    return a.firstOrNull() ?: aaaa.firstOrNull()
+  }
+}

apps/android/app/src/main/java/com/clawdbot/android/gateway/GatewayEndpoint.kt

@@ -0,0 +1,26 @@
+package com.clawdbot.android.gateway
+
+data class GatewayEndpoint(
+  val stableId: String,
+  val name: String,
+  val host: String,
+  val port: Int,
+  val lanHost: String? = null,
+  val tailnetDns: String? = null,
+  val gatewayPort: Int? = null,
+  val canvasPort: Int? = null,
+  val tlsEnabled: Boolean = false,
+  val tlsFingerprintSha256: String? = null,
+) {
+  companion object {
+    fun manual(host: String, port: Int): GatewayEndpoint =
+      GatewayEndpoint(
+        stableId = "manual|${host.lowercase()}|$port",
+        name = "$host:$port",
+        host = host,
+        port = port,
+        tlsEnabled = false,
+        tlsFingerprintSha256 = null,
+      )
+  }
+}

apps/android/app/src/main/java/com/clawdbot/android/gateway/GatewayProtocol.kt

@@ -0,0 +1,3 @@
+package com.clawdbot.android.gateway
+
+const val GATEWAY_PROTOCOL_VERSION = 3

apps/android/app/src/main/java/com/clawdbot/android/gateway/GatewaySession.kt

@@ -0,0 +1,599 @@
+package com.clawdbot.android.gateway
+
+import android.util.Log
+import java.util.Locale
+import java.util.UUID
+import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.atomic.AtomicBoolean
+import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.TimeoutCancellationException
+import kotlinx.coroutines.cancelAndJoin
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
+import kotlinx.coroutines.withTimeout
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonArray
+import kotlinx.serialization.json.JsonElement
+import kotlinx.serialization.json.JsonNull
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.JsonPrimitive
+import kotlinx.serialization.json.buildJsonObject
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.Response
+import okhttp3.WebSocket
+import okhttp3.WebSocketListener
+
+data class GatewayClientInfo(
+  val id: String,
+  val displayName: String?,
+  val version: String,
+  val platform: String,
+  val mode: String,
+  val instanceId: String?,
+  val deviceFamily: String?,
+  val modelIdentifier: String?,
+)
+
+data class GatewayConnectOptions(
+  val role: String,
+  val scopes: List<String>,
+  val caps: List<String>,
+  val commands: List<String>,
+  val permissions: Map<String, Boolean>,
+  val client: GatewayClientInfo,
+)
+
+class GatewaySession(
+  private val scope: CoroutineScope,
+  private val identityStore: DeviceIdentityStore,
+  private val onConnected: (serverName: String?, remoteAddress: String?, mainSessionKey: String?) -> Unit,
+  private val onDisconnected: (message: String) -> Unit,
+  private val onEvent: (event: String, payloadJson: String?) -> Unit,
+  private val onInvoke: (suspend (InvokeRequest) -> InvokeResult)? = null,
+  private val onTlsFingerprint: ((stableId: String, fingerprint: String) -> Unit)? = null,
+) {
+  data class InvokeRequest(
+    val id: String,
+    val nodeId: String,
+    val command: String,
+    val paramsJson: String?,
+    val timeoutMs: Long?,
+  )
+
+  data class InvokeResult(val ok: Boolean, val payloadJson: String?, val error: ErrorShape?) {
+    companion object {
+      fun ok(payloadJson: String?) = InvokeResult(ok = true, payloadJson = payloadJson, error = null)
+      fun error(code: String, message: String) =
+        InvokeResult(ok = false, payloadJson = null, error = ErrorShape(code = code, message = message))
+    }
+  }
+
+  data class ErrorShape(val code: String, val message: String)
+
+  private val json = Json { ignoreUnknownKeys = true }
+  private val writeLock = Mutex()
+  private val pending = ConcurrentHashMap<String, CompletableDeferred<RpcResponse>>()
+
+  @Volatile private var canvasHostUrl: String? = null
+  @Volatile private var mainSessionKey: String? = null
+
+  private data class DesiredConnection(
+    val endpoint: GatewayEndpoint,
+    val token: String?,
+    val password: String?,
+    val options: GatewayConnectOptions,
+    val tls: GatewayTlsParams?,
+  )
+
+  private var desired: DesiredConnection? = null
+  private var job: Job? = null
+  @Volatile private var currentConnection: Connection? = null
+
+  fun connect(
+    endpoint: GatewayEndpoint,
+    token: String?,
+    password: String?,
+    options: GatewayConnectOptions,
+    tls: GatewayTlsParams? = null,
+  ) {
+    desired = DesiredConnection(endpoint, token, password, options, tls)
+    if (job == null) {
+      job = scope.launch(Dispatchers.IO) { runLoop() }
+    }
+  }
+
+  fun disconnect() {
+    desired = null
+    currentConnection?.closeQuietly()
+    scope.launch(Dispatchers.IO) {
+      job?.cancelAndJoin()
+      job = null
+      canvasHostUrl = null
+      mainSessionKey = null
+      onDisconnected("Offline")
+    }
+  }
+
+  fun reconnect() {
+    currentConnection?.closeQuietly()
+  }
+
+  fun currentCanvasHostUrl(): String? = canvasHostUrl
+  fun currentMainSessionKey(): String? = mainSessionKey
+
+  suspend fun sendNodeEvent(event: String, payloadJson: String?) {
+    val conn = currentConnection ?: return
+    val params =
+      buildJsonObject {
+        put("event", JsonPrimitive(event))
+        if (payloadJson != null) put("payloadJSON", JsonPrimitive(payloadJson)) else put("payloadJSON", JsonNull)
+      }
+    try {
+      conn.request("node.event", params, timeoutMs = 8_000)
+    } catch (err: Throwable) {
+      Log.w("ClawdbotGateway", "node.event failed: ${err.message ?: err::class.java.simpleName}")
+    }
+  }
+
+  suspend fun request(method: String, paramsJson: String?, timeoutMs: Long = 15_000): String {
+    val conn = currentConnection ?: throw IllegalStateException("not connected")
+    val params =
+      if (paramsJson.isNullOrBlank()) {
+        null
+      } else {
+        json.parseToJsonElement(paramsJson)
+      }
+    val res = conn.request(method, params, timeoutMs)
+    if (res.ok) return res.payloadJson ?: ""
+    val err = res.error
+    throw IllegalStateException("${err?.code ?: "UNAVAILABLE"}: ${err?.message ?: "request failed"}")
+  }
+
+  private data class RpcResponse(val id: String, val ok: Boolean, val payloadJson: String?, val error: ErrorShape?)
+
+  private inner class Connection(
+    private val endpoint: GatewayEndpoint,
+    private val token: String?,
+    private val password: String?,
+    private val options: GatewayConnectOptions,
+    private val tls: GatewayTlsParams?,
+  ) {
+    private val connectDeferred = CompletableDeferred<Unit>()
+    private val closedDeferred = CompletableDeferred<Unit>()
+    private val isClosed = AtomicBoolean(false)
+    private val client: OkHttpClient = buildClient()
+    private var socket: WebSocket? = null
+    private val loggerTag = "ClawdbotGateway"
+
+    val remoteAddress: String =
+      if (endpoint.host.contains(":")) {
+        "[${endpoint.host}]:${endpoint.port}"
+      } else {
+        "${endpoint.host}:${endpoint.port}"
+      }
+
+    suspend fun connect() {
+      val scheme = if (tls != null) "wss" else "ws"
+      val url = "$scheme://${endpoint.host}:${endpoint.port}"
+      val request = Request.Builder().url(url).build()
+      socket = client.newWebSocket(request, Listener())
+      try {
+        connectDeferred.await()
+      } catch (err: Throwable) {
+        throw err
+      }
+    }
+
+    suspend fun request(method: String, params: JsonElement?, timeoutMs: Long): RpcResponse {
+      val id = UUID.randomUUID().toString()
+      val deferred = CompletableDeferred<RpcResponse>()
+      pending[id] = deferred
+      val frame =
+        buildJsonObject {
+          put("type", JsonPrimitive("req"))
+          put("id", JsonPrimitive(id))
+          put("method", JsonPrimitive(method))
+          if (params != null) put("params", params)
+        }
+      sendJson(frame)
+      return try {
+        withTimeout(timeoutMs) { deferred.await() }
+      } catch (err: TimeoutCancellationException) {
+        pending.remove(id)
+        throw IllegalStateException("request timeout")
+      }
+    }
+
+    suspend fun sendJson(obj: JsonObject) {
+      val jsonString = obj.toString()
+      writeLock.withLock {
+        socket?.send(jsonString)
+      }
+    }
+
+    fun awaitClose() = closedDeferred.await()
+
+    fun closeQuietly() {
+      if (isClosed.compareAndSet(false, true)) {
+        socket?.close(1000, "bye")
+        socket = null
+        closedDeferred.complete(Unit)
+      }
+    }
+
+    private fun buildClient(): OkHttpClient {
+      val builder = OkHttpClient.Builder()
+      val tlsConfig = buildGatewayTlsConfig(tls) { fingerprint ->
+        onTlsFingerprint?.invoke(tls?.stableId ?: endpoint.stableId, fingerprint)
+      }
+      if (tlsConfig != null) {
+        builder.sslSocketFactory(tlsConfig.sslSocketFactory, tlsConfig.trustManager)
+        builder.hostnameVerifier(tlsConfig.hostnameVerifier)
+      }
+      return builder.build()
+    }
+
+    private inner class Listener : WebSocketListener() {
+      override fun onOpen(webSocket: WebSocket, response: Response) {
+        scope.launch {
+          try {
+            sendConnect()
+          } catch (err: Throwable) {
+            connectDeferred.completeExceptionally(err)
+            closeQuietly()
+          }
+        }
+      }
+
+      override fun onMessage(webSocket: WebSocket, text: String) {
+        scope.launch { handleMessage(text) }
+      }
+
+      override fun onFailure(webSocket: WebSocket, t: Throwable, response: Response?) {
+        if (!connectDeferred.isCompleted) {
+          connectDeferred.completeExceptionally(t)
+        }
+        if (isClosed.compareAndSet(false, true)) {
+          failPending()
+          closedDeferred.complete(Unit)
+          onDisconnected("Gateway error: ${t.message ?: t::class.java.simpleName}")
+        }
+      }
+
+      override fun onClosed(webSocket: WebSocket, code: Int, reason: String) {
+        if (!connectDeferred.isCompleted) {
+          connectDeferred.completeExceptionally(IllegalStateException("Gateway closed: $reason"))
+        }
+        if (isClosed.compareAndSet(false, true)) {
+          failPending()
+          closedDeferred.complete(Unit)
+          onDisconnected("Gateway closed: $reason")
+        }
+      }
+    }
+
+    private suspend fun sendConnect() {
+      val payload = buildConnectParams()
+      val res = request("connect", payload, timeoutMs = 8_000)
+      if (!res.ok) {
+        val msg = res.error?.message ?: "connect failed"
+        throw IllegalStateException(msg)
+      }
+      val payloadJson = res.payloadJson ?: throw IllegalStateException("connect failed: missing payload")
+      val obj = json.parseToJsonElement(payloadJson).asObjectOrNull() ?: throw IllegalStateException("connect failed")
+      val serverName = obj["server"].asObjectOrNull()?.get("host").asStringOrNull()
+      val rawCanvas = obj["canvasHostUrl"].asStringOrNull()
+      canvasHostUrl = normalizeCanvasHostUrl(rawCanvas, endpoint)
+      val sessionDefaults =
+        obj["snapshot"].asObjectOrNull()
+          ?.get("sessionDefaults").asObjectOrNull()
+      mainSessionKey = sessionDefaults?.get("mainSessionKey").asStringOrNull()
+      onConnected(serverName, remoteAddress, mainSessionKey)
+      connectDeferred.complete(Unit)
+    }
+
+    private fun buildConnectParams(): JsonObject {
+      val client = options.client
+      val locale = Locale.getDefault().toLanguageTag()
+      val clientObj =
+        buildJsonObject {
+          put("id", JsonPrimitive(client.id))
+          client.displayName?.let { put("displayName", JsonPrimitive(it)) }
+          put("version", JsonPrimitive(client.version))
+          put("platform", JsonPrimitive(client.platform))
+          put("mode", JsonPrimitive(client.mode))
+          client.instanceId?.let { put("instanceId", JsonPrimitive(it)) }
+          client.deviceFamily?.let { put("deviceFamily", JsonPrimitive(it)) }
+          client.modelIdentifier?.let { put("modelIdentifier", JsonPrimitive(it)) }
+        }
+
+      val params =
+        buildJsonObject {
+          put("minProtocol", JsonPrimitive(GATEWAY_PROTOCOL_VERSION))
+          put("maxProtocol", JsonPrimitive(GATEWAY_PROTOCOL_VERSION))
+          put("client", clientObj)
+          if (options.caps.isNotEmpty()) put("caps", JsonArray(options.caps.map(::JsonPrimitive)))
+          if (options.commands.isNotEmpty()) put("commands", JsonArray(options.commands.map(::JsonPrimitive)))
+          if (options.permissions.isNotEmpty()) {
+            put(
+              "permissions",
+              buildJsonObject {
+                options.permissions.forEach { (key, value) ->
+                  put(key, JsonPrimitive(value))
+                }
+              },
+            )
+          }
+          put("role", JsonPrimitive(options.role))
+          if (options.scopes.isNotEmpty()) put("scopes", JsonArray(options.scopes.map(::JsonPrimitive)))
+          put("locale", JsonPrimitive(locale))
+        }
+
+      val authToken = token?.trim().orEmpty()
+      val authPassword = password?.trim().orEmpty()
+      if (authToken.isNotEmpty()) {
+        params["auth"] =
+          buildJsonObject {
+            put("token", JsonPrimitive(authToken))
+          }
+      } else if (authPassword.isNotEmpty()) {
+        params["auth"] =
+          buildJsonObject {
+            put("password", JsonPrimitive(authPassword))
+          }
+      }
+
+      val identity = identityStore.loadOrCreate()
+      val signedAtMs = System.currentTimeMillis()
+      val payload =
+        buildDeviceAuthPayload(
+          deviceId = identity.deviceId,
+          clientId = client.id,
+          clientMode = client.mode,
+          role = options.role,
+          scopes = options.scopes,
+          signedAtMs = signedAtMs,
+          token = if (authToken.isNotEmpty()) authToken else null,
+        )
+      val signature = identityStore.signPayload(payload, identity)
+      val publicKey = identityStore.publicKeyBase64Url(identity)
+      if (!signature.isNullOrBlank() && !publicKey.isNullOrBlank()) {
+        params["device"] =
+          buildJsonObject {
+            put("id", JsonPrimitive(identity.deviceId))
+            put("publicKey", JsonPrimitive(publicKey))
+            put("signature", JsonPrimitive(signature))
+            put("signedAt", JsonPrimitive(signedAtMs))
+          }
+      }
+
+      return params
+    }
+
+    private suspend fun handleMessage(text: String) {
+      val frame = json.parseToJsonElement(text).asObjectOrNull() ?: return
+      when (frame["type"].asStringOrNull()) {
+        "res" -> handleResponse(frame)
+        "event" -> handleEvent(frame)
+      }
+    }
+
+    private fun handleResponse(frame: JsonObject) {
+      val id = frame["id"].asStringOrNull() ?: return
+      val ok = frame["ok"].asBooleanOrNull() ?: false
+      val payloadJson = frame["payload"]?.let { payload -> payload.toString() }
+      val error =
+        frame["error"]?.asObjectOrNull()?.let { obj ->
+          val code = obj["code"].asStringOrNull() ?: "UNAVAILABLE"
+          val msg = obj["message"].asStringOrNull() ?: "request failed"
+          ErrorShape(code, msg)
+        }
+      pending.remove(id)?.complete(RpcResponse(id, ok, payloadJson, error))
+    }
+
+    private fun handleEvent(frame: JsonObject) {
+      val event = frame["event"].asStringOrNull() ?: return
+      val payloadJson = frame["payload"]?.let { it.toString() }
+      if (event == "node.invoke.request" && payloadJson != null && onInvoke != null) {
+        handleInvokeEvent(payloadJson)
+        return
+      }
+      onEvent(event, payloadJson)
+    }
+
+    private fun handleInvokeEvent(payloadJson: String) {
+      val payload =
+        try {
+          json.parseToJsonElement(payloadJson).asObjectOrNull()
+        } catch (_: Throwable) {
+          null
+        } ?: return
+      val id = payload["id"].asStringOrNull() ?: return
+      val nodeId = payload["nodeId"].asStringOrNull() ?: return
+      val command = payload["command"].asStringOrNull() ?: return
+      val params = payload["paramsJSON"].asStringOrNull()
+      val timeoutMs = payload["timeoutMs"].asLongOrNull()
+      scope.launch {
+        val result =
+          try {
+            onInvoke?.invoke(InvokeRequest(id, nodeId, command, params, timeoutMs))
+              ?: InvokeResult.error("UNAVAILABLE", "invoke handler missing")
+          } catch (err: Throwable) {
+            invokeErrorFromThrowable(err)
+          }
+        sendInvokeResult(id, nodeId, result)
+      }
+    }
+
+    private suspend fun sendInvokeResult(id: String, nodeId: String, result: InvokeResult) {
+      val params =
+        buildJsonObject {
+          put("id", JsonPrimitive(id))
+          put("nodeId", JsonPrimitive(nodeId))
+          put("ok", JsonPrimitive(result.ok))
+          if (result.payloadJson != null) put("payloadJSON", JsonPrimitive(result.payloadJson))
+          result.error?.let { err ->
+            put(
+              "error",
+              buildJsonObject {
+                put("code", JsonPrimitive(err.code))
+                put("message", JsonPrimitive(err.message))
+              },
+            )
+          }
+        }
+      try {
+        request("node.invoke.result", params, timeoutMs = 15_000)
+      } catch (err: Throwable) {
+        Log.w(loggerTag, "node.invoke.result failed: ${err.message ?: err::class.java.simpleName}")
+      }
+    }
+
+    private fun invokeErrorFromThrowable(err: Throwable): InvokeResult {
+      val msg = err.message?.trim().takeIf { !it.isNullOrEmpty() } ?: err::class.java.simpleName
+      val parts = msg.split(":", limit = 2)
+      if (parts.size == 2) {
+        val code = parts[0].trim()
+        val rest = parts[1].trim()
+        if (code.isNotEmpty() && code.all { it.isUpperCase() || it == '_' }) {
+          return InvokeResult.error(code = code, message = rest.ifEmpty { msg })
+        }
+      }
+      return InvokeResult.error(code = "UNAVAILABLE", message = msg)
+    }
+
+    private fun failPending() {
+      for ((_, waiter) in pending) {
+        waiter.cancel()
+      }
+      pending.clear()
+    }
+  }
+
+  private suspend fun runLoop() {
+    var attempt = 0
+    while (scope.isActive) {
+      val target = desired
+      if (target == null) {
+        currentConnection?.closeQuietly()
+        currentConnection = null
+        delay(250)
+        continue
+      }
+
+      try {
+        onDisconnected(if (attempt == 0) "Connecting…" else "Reconnecting…")
+        connectOnce(target)
+        attempt = 0
+      } catch (err: Throwable) {
+        attempt += 1
+        onDisconnected("Gateway error: ${err.message ?: err::class.java.simpleName}")
+        val sleepMs = minOf(8_000L, (350.0 * Math.pow(1.7, attempt.toDouble())).toLong())
+        delay(sleepMs)
+      }
+    }
+  }
+
+  private suspend fun connectOnce(target: DesiredConnection) = withContext(Dispatchers.IO) {
+    val conn = Connection(target.endpoint, target.token, target.password, target.options, target.tls)
+    currentConnection = conn
+    try {
+      conn.connect()
+      conn.awaitClose()
+    } finally {
+      currentConnection = null
+      canvasHostUrl = null
+      mainSessionKey = null
+    }
+  }
+
+  private fun buildDeviceAuthPayload(
+    deviceId: String,
+    clientId: String,
+    clientMode: String,
+    role: String,
+    scopes: List<String>,
+    signedAtMs: Long,
+    token: String?,
+  ): String {
+    val scopeString = scopes.joinToString(",")
+    val authToken = token.orEmpty()
+    return listOf(
+      "v1",
+      deviceId,
+      clientId,
+      clientMode,
+      role,
+      scopeString,
+      signedAtMs.toString(),
+      authToken,
+    ).joinToString("|")
+  }
+
+  private fun normalizeCanvasHostUrl(raw: String?, endpoint: GatewayEndpoint): String? {
+    val trimmed = raw?.trim().orEmpty()
+    val parsed = trimmed.takeIf { it.isNotBlank() }?.let { runCatching { java.net.URI(it) }.getOrNull() }
+    val host = parsed?.host?.trim().orEmpty()
+    val port = parsed?.port ?: -1
+    val scheme = parsed?.scheme?.trim().orEmpty().ifBlank { "http" }
+
+    if (trimmed.isNotBlank() && !isLoopbackHost(host)) {
+      return trimmed
+    }
+
+    val fallbackHost =
+      endpoint.tailnetDns?.trim().takeIf { !it.isNullOrEmpty() }
+        ?: endpoint.lanHost?.trim().takeIf { !it.isNullOrEmpty() }
+        ?: endpoint.host.trim()
+    if (fallbackHost.isEmpty()) return trimmed.ifBlank { null }
+
+    val fallbackPort = endpoint.canvasPort ?: if (port > 0) port else 18793
+    val formattedHost = if (fallbackHost.contains(":")) "[${fallbackHost}]" else fallbackHost
+    return "$scheme://$formattedHost:$fallbackPort"
+  }
+
+  private fun isLoopbackHost(raw: String?): Boolean {
+    val host = raw?.trim()?.lowercase().orEmpty()
+    if (host.isEmpty()) return false
+    if (host == "localhost") return true
+    if (host == "::1") return true
+    if (host == "0.0.0.0" || host == "::") return true
+    return host.startsWith("127.")
+  }
+}
+
+private fun JsonElement?.asObjectOrNull(): JsonObject? = this as? JsonObject
+
+private fun JsonElement?.asStringOrNull(): String? =
+  when (this) {
+    is JsonNull -> null
+    is JsonPrimitive -> content
+    else -> null
+  }
+
+private fun JsonElement?.asBooleanOrNull(): Boolean? =
+  when (this) {
+    is JsonPrimitive -> {
+      val c = content.trim()
+      when {
+        c.equals("true", ignoreCase = true) -> true
+        c.equals("false", ignoreCase = true) -> false
+        else -> null
+      }
+    }
+    else -> null
+  }
+
+private fun JsonElement?.asLongOrNull(): Long? =
+  when (this) {
+    is JsonPrimitive -> content.toLongOrNull()
+    else -> null
+  }

apps/android/app/src/main/java/com/clawdbot/android/gateway/GatewayTls.kt

@@ -0,0 +1,88 @@
+package com.clawdbot.android.gateway
+
+import android.annotation.SuppressLint
+import java.security.MessageDigest
+import java.security.SecureRandom
+import java.security.cert.CertificateException
+import java.security.cert.X509Certificate
+import javax.net.ssl.HostnameVerifier
+import javax.net.ssl.SSLContext
+import javax.net.ssl.SSLSocketFactory
+import javax.net.ssl.TrustManagerFactory
+import javax.net.ssl.X509TrustManager
+
+data class GatewayTlsParams(
+  val required: Boolean,
+  val expectedFingerprint: String?,
+  val allowTOFU: Boolean,
+  val stableId: String,
+)
+
+data class GatewayTlsConfig(
+  val sslSocketFactory: SSLSocketFactory,
+  val trustManager: X509TrustManager,
+  val hostnameVerifier: HostnameVerifier,
+)
+
+fun buildGatewayTlsConfig(
+  params: GatewayTlsParams?,
+  onStore: ((String) -> Unit)? = null,
+): GatewayTlsConfig? {
+  if (params == null) return null
+  val expected = params.expectedFingerprint?.let(::normalizeFingerprint)
+  val defaultTrust = defaultTrustManager()
+  @SuppressLint("CustomX509TrustManager")
+  val trustManager =
+    object : X509TrustManager {
+      override fun checkClientTrusted(chain: Array<X509Certificate>, authType: String) {
+        defaultTrust.checkClientTrusted(chain, authType)
+      }
+
+      override fun checkServerTrusted(chain: Array<X509Certificate>, authType: String) {
+        if (chain.isEmpty()) throw CertificateException("empty certificate chain")
+        val fingerprint = sha256Hex(chain[0].encoded)
+        if (expected != null) {
+          if (fingerprint != expected) {
+            throw CertificateException("gateway TLS fingerprint mismatch")
+          }
+          return
+        }
+        if (params.allowTOFU) {
+          onStore?.invoke(fingerprint)
+          return
+        }
+        defaultTrust.checkServerTrusted(chain, authType)
+      }
+
+      override fun getAcceptedIssuers(): Array<X509Certificate> = defaultTrust.acceptedIssuers
+    }
+
+  val context = SSLContext.getInstance("TLS")
+  context.init(null, arrayOf(trustManager), SecureRandom())
+  return GatewayTlsConfig(
+    sslSocketFactory = context.socketFactory,
+    trustManager = trustManager,
+    hostnameVerifier = HostnameVerifier { _, _ -> true },
+  )
+}
+
+private fun defaultTrustManager(): X509TrustManager {
+  val factory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
+  factory.init(null as java.security.KeyStore?)
+  val trust =
+    factory.trustManagers.firstOrNull { it is X509TrustManager } as? X509TrustManager
+  return trust ?: throw IllegalStateException("No default X509TrustManager found")
+}
+
+private fun sha256Hex(data: ByteArray): String {
+  val digest = MessageDigest.getInstance("SHA-256").digest(data)
+  val out = StringBuilder(digest.size * 2)
+  for (byte in digest) {
+    out.append(String.format("%02x", byte))
+  }
+  return out.toString()
+}
+
+private fun normalizeFingerprint(raw: String): String {
+  return raw.lowercase().filter { it in '0'..'9' || it in 'a'..'f' }
+}

apps/android/app/src/main/java/com/clawdbot/android/ui/RootScreen.kt

@@ -118,7 +118,7 @@ fun RootScreen(viewModel: MainViewModel) {
           contentDescription = "Approval pending",
         )
       }
-      // Avoid duplicating the primary bridge status ("Connecting…") in the activity slot.
+      // Avoid duplicating the primary gateway status ("Connecting…") in the activity slot.
 
       if (screenRecordActive) {
         return@remember StatusActivity(
@@ -179,14 +179,14 @@ fun RootScreen(viewModel: MainViewModel) {
       null
     }
 
-  val bridgeState =
+  val gatewayState =
     remember(serverName, statusText) {
       when {
-        serverName != null -> BridgeState.Connected
+        serverName != null -> GatewayState.Connected
         statusText.contains("connecting", ignoreCase = true) ||
-          statusText.contains("reconnecting", ignoreCase = true) -> BridgeState.Connecting
+          statusText.contains("reconnecting", ignoreCase = true) -> GatewayState.Connecting
-        statusText.contains("error", ignoreCase = true) -> BridgeState.Error
+        statusText.contains("error", ignoreCase = true) -> GatewayState.Error
-        else -> BridgeState.Disconnected
+        else -> GatewayState.Disconnected
       }
     }
 
@@ -206,7 +206,7 @@ fun RootScreen(viewModel: MainViewModel) {
   // Keep the overlay buttons above the WebView canvas (AndroidView), otherwise they may not receive touches.
   Popup(alignment = Alignment.TopStart, properties = PopupProperties(focusable = false)) {
     StatusPill(
-      bridge = bridgeState,
+      gateway = gatewayState,
       voiceEnabled = voiceEnabled,
       activity = activity,
       onClick = { sheet = Sheet.Settings },

apps/android/app/src/main/java/com/clawdbot/android/ui/SettingsSheet.kt

@@ -48,6 +48,7 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
@@ -74,11 +75,12 @@ fun SettingsSheet(viewModel: MainViewModel) {
   val manualEnabled by viewModel.manualEnabled.collectAsState()
   val manualHost by viewModel.manualHost.collectAsState()
   val manualPort by viewModel.manualPort.collectAsState()
+  val manualTls by viewModel.manualTls.collectAsState()
   val canvasDebugStatusEnabled by viewModel.canvasDebugStatusEnabled.collectAsState()
   val statusText by viewModel.statusText.collectAsState()
   val serverName by viewModel.serverName.collectAsState()
   val remoteAddress by viewModel.remoteAddress.collectAsState()
-  val bridges by viewModel.bridges.collectAsState()
+  val gateways by viewModel.gateways.collectAsState()
   val discoveryStatusText by viewModel.discoveryStatusText.collectAsState()
 
   val listState = rememberLazyListState()
@@ -163,7 +165,7 @@ fun SettingsSheet(viewModel: MainViewModel) {
   val smsPermissionLauncher =
     rememberLauncherForActivityResult(ActivityResultContracts.RequestPermission()) { granted ->
       smsPermissionGranted = granted
-      viewModel.refreshBridgeHello()
+      viewModel.refreshGatewayConnection()
     }
 
   fun setCameraEnabledChecked(checked: Boolean) {
@@ -223,20 +225,20 @@ fun SettingsSheet(viewModel: MainViewModel) {
     }
   }
 
-  val visibleBridges =
+  val visibleGateways =
     if (isConnected && remoteAddress != null) {
-      bridges.filterNot { "${it.host}:${it.port}" == remoteAddress }
+      gateways.filterNot { "${it.host}:${it.port}" == remoteAddress }
     } else {
-      bridges
+      gateways
     }
 
-  val bridgeDiscoveryFooterText =
+  val gatewayDiscoveryFooterText =
-    if (visibleBridges.isEmpty()) {
+    if (visibleGateways.isEmpty()) {
       discoveryStatusText
     } else if (isConnected) {
-      "Discovery active • ${visibleBridges.size} other bridge${if (visibleBridges.size == 1) "" else "s"} found"
+      "Discovery active • ${visibleGateways.size} other gateway${if (visibleGateways.size == 1) "" else "s"} found"
     } else {
-      "Discovery active • ${visibleBridges.size} bridge${if (visibleBridges.size == 1) "" else "s"} found"
+      "Discovery active • ${visibleGateways.size} gateway${if (visibleGateways.size == 1) "" else "s"} found"
     }
 
   LazyColumn(
@@ -250,7 +252,7 @@ fun SettingsSheet(viewModel: MainViewModel) {
     contentPadding = PaddingValues(16.dp),
     verticalArrangement = Arrangement.spacedBy(6.dp),
   ) {
-    // Order parity: Node → Bridge → Voice → Camera → Messaging → Location → Screen.
+    // Order parity: Node → Gateway → Voice → Camera → Messaging → Location → Screen.
     item { Text("Node", style = MaterialTheme.typography.titleSmall) }
     item {
       OutlinedTextField(
@@ -266,8 +268,8 @@ fun SettingsSheet(viewModel: MainViewModel) {
 
     item { HorizontalDivider() }
 
-    // Bridge
+    // Gateway
-    item { Text("Bridge", style = MaterialTheme.typography.titleSmall) }
+    item { Text("Gateway", style = MaterialTheme.typography.titleSmall) }
     item { ListItem(headlineContent = { Text("Status") }, supportingContent = { Text(statusText) }) }
     if (serverName != null) {
       item { ListItem(headlineContent = { Text("Server") }, supportingContent = { Text(serverName!!) }) }
@@ -291,31 +293,31 @@ fun SettingsSheet(viewModel: MainViewModel) {
 
     item { HorizontalDivider() }
 
-    if (!isConnected || visibleBridges.isNotEmpty()) {
+    if (!isConnected || visibleGateways.isNotEmpty()) {
       item {
         Text(
-          if (isConnected) "Other Bridges" else "Discovered Bridges",
+          if (isConnected) "Other Gateways" else "Discovered Gateways",
           style = MaterialTheme.typography.titleSmall,
         )
       }
-      if (!isConnected && visibleBridges.isEmpty()) {
+      if (!isConnected && visibleGateways.isEmpty()) {
-        item { Text("No bridges found yet.", color = MaterialTheme.colorScheme.onSurfaceVariant) }
+        item { Text("No gateways found yet.", color = MaterialTheme.colorScheme.onSurfaceVariant) }
       } else {
-        items(items = visibleBridges, key = { it.stableId }) { bridge ->
+        items(items = visibleGateways, key = { it.stableId }) { gateway ->
           val detailLines =
             buildList {
-              add("IP: ${bridge.host}:${bridge.port}")
+              add("IP: ${gateway.host}:${gateway.port}")
-              bridge.lanHost?.let { add("LAN: $it") }
+              gateway.lanHost?.let { add("LAN: $it") }
-              bridge.tailnetDns?.let { add("Tailnet: $it") }
+              gateway.tailnetDns?.let { add("Tailnet: $it") }
-              if (bridge.gatewayPort != null || bridge.bridgePort != null || bridge.canvasPort != null) {
+              if (gateway.gatewayPort != null || gateway.bridgePort != null || gateway.canvasPort != null) {
-                val gw = bridge.gatewayPort?.toString() ?: "—"
+                val gw = gateway.gatewayPort?.toString() ?: "—"
-                val br = (bridge.bridgePort ?: bridge.port).toString()
+                val br = (gateway.bridgePort ?: gateway.port).toString()
-                val canvas = bridge.canvasPort?.toString() ?: "—"
+                val canvas = gateway.canvasPort?.toString() ?: "—"
                 add("Ports: gw $gw · bridge $br · canvas $canvas")
               }
             }
           ListItem(
-            headlineContent = { Text(bridge.name) },
+            headlineContent = { Text(gateway.name) },
             supportingContent = {
               Column(verticalArrangement = Arrangement.spacedBy(2.dp)) {
                 detailLines.forEach { line ->
@@ -327,7 +329,7 @@ fun SettingsSheet(viewModel: MainViewModel) {
               Button(
                 onClick = {
                   NodeForegroundService.start(context)
-                  viewModel.connect(bridge)
+                  viewModel.connect(gateway)
                 },
               ) {
                 Text("Connect")
@@ -338,7 +340,7 @@ fun SettingsSheet(viewModel: MainViewModel) {
       }
       item {
         Text(
-          bridgeDiscoveryFooterText,
+          gatewayDiscoveryFooterText,
           modifier = Modifier.fillMaxWidth(),
           textAlign = TextAlign.Center,
           style = MaterialTheme.typography.labelMedium,
@@ -352,7 +354,7 @@ fun SettingsSheet(viewModel: MainViewModel) {
     item {
       ListItem(
         headlineContent = { Text("Advanced") },
-        supportingContent = { Text("Manual bridge connection") },
+        supportingContent = { Text("Manual gateway connection") },
         trailingContent = {
           Icon(
             imageVector = if (advancedExpanded) Icons.Filled.ExpandLess else Icons.Filled.ExpandMore,
@@ -369,7 +371,7 @@ fun SettingsSheet(viewModel: MainViewModel) {
       AnimatedVisibility(visible = advancedExpanded) {
         Column(verticalArrangement = Arrangement.spacedBy(10.dp), modifier = Modifier.fillMaxWidth()) {
           ListItem(
-            headlineContent = { Text("Use Manual Bridge") },
+            headlineContent = { Text("Use Manual Gateway") },
             supportingContent = { Text("Use this when discovery is blocked.") },
             trailingContent = { Switch(checked = manualEnabled, onCheckedChange = viewModel::setManualEnabled) },
           )
@@ -388,6 +390,12 @@ fun SettingsSheet(viewModel: MainViewModel) {
             modifier = Modifier.fillMaxWidth(),
             enabled = manualEnabled,
           )
+          ListItem(
+            headlineContent = { Text("Require TLS") },
+            supportingContent = { Text("Pin the gateway certificate on first connect.") },
+            trailingContent = { Switch(checked = manualTls, onCheckedChange = viewModel::setManualTls, enabled = manualEnabled) },
+            modifier = Modifier.alpha(if (manualEnabled) 1f else 0.5f),
+          )
 
           val hostOk = manualHost.trim().isNotEmpty()
           val portOk = manualPort in 1..65535
@@ -496,7 +504,7 @@ fun SettingsSheet(viewModel: MainViewModel) {
     item {
       Text(
         if (isConnected) {
-          "Any node can edit wake words. Changes sync via the gateway bridge."
+          "Any node can edit wake words. Changes sync via the gateway."
         } else {
           "Connect to a gateway to sync wake words globally."
         },
@@ -511,7 +519,7 @@ fun SettingsSheet(viewModel: MainViewModel) {
     item {
       ListItem(
         headlineContent = { Text("Allow Camera") },
-        supportingContent = { Text("Allows the bridge to request photos or short video clips (foreground only).") },
+        supportingContent = { Text("Allows the gateway to request photos or short video clips (foreground only).") },
         trailingContent = { Switch(checked = cameraEnabled, onCheckedChange = ::setCameraEnabledChecked) },
       )
     }
@@ -538,7 +546,7 @@ fun SettingsSheet(viewModel: MainViewModel) {
         supportingContent = {
           Text(
             if (smsPermissionAvailable) {
-              "Allow the bridge to send SMS from this device."
+              "Allow the gateway to send SMS from this device."
             } else {
               "SMS requires a device with telephony hardware."
             },

apps/android/app/src/main/java/com/clawdbot/android/ui/StatusPill.kt

@@ -26,7 +26,7 @@ import androidx.compose.ui.unit.dp
 
 @Composable
 fun StatusPill(
-  bridge: BridgeState,
+  gateway: GatewayState,
   voiceEnabled: Boolean,
   onClick: () -> Unit,
   modifier: Modifier = Modifier,
@@ -49,11 +49,11 @@ fun StatusPill(
         Surface(
           modifier = Modifier.size(9.dp),
           shape = CircleShape,
-          color = bridge.color,
+          color = gateway.color,
         ) {}
 
         Text(
-          text = bridge.title,
+          text = gateway.title,
           style = MaterialTheme.typography.labelLarge,
         )
       }
@@ -106,7 +106,7 @@ data class StatusActivity(
   val tint: Color? = null,
 )
 
-enum class BridgeState(val title: String, val color: Color) {
+enum class GatewayState(val title: String, val color: Color) {
   Connected("Connected", Color(0xFF2ECC71)),
   Connecting("Connecting…", Color(0xFFF1C40F)),
   Error("Error", Color(0xFFE74C3C)),

apps/android/app/src/main/java/com/clawdbot/android/voice/TalkModeManager.kt

@@ -20,7 +20,7 @@ import android.speech.tts.TextToSpeech
 import android.speech.tts.UtteranceProgressListener
 import android.util.Log
 import androidx.core.content.ContextCompat
-import com.clawdbot.android.bridge.BridgeSession
+import com.clawdbot.android.gateway.GatewaySession
 import com.clawdbot.android.isCanonicalMainSessionKey
 import com.clawdbot.android.normalizeMainKey
 import java.net.HttpURLConnection
@@ -46,6 +46,9 @@ import kotlin.math.max
 class TalkModeManager(
   private val context: Context,
   private val scope: CoroutineScope,
+  private val session: GatewaySession,
+  private val supportsChatSubscribe: Boolean,
+  private val isConnected: () -> Boolean,
 ) {
   companion object {
     private const val tag = "TalkMode"
@@ -99,7 +102,6 @@ class TalkModeManager(
   private var modelOverrideActive = false
   private var mainSessionKey: String = "main"
 
-  private var session: BridgeSession? = null
   private var pendingRunId: String? = null
   private var pendingFinal: CompletableDeferred<Boolean>? = null
   private var chatSubscribedSessionKey: String? = null
@@ -112,11 +114,6 @@ class TalkModeManager(
   private var systemTtsPending: CompletableDeferred<Unit>? = null
   private var systemTtsPendingId: String? = null
 
-  fun attachSession(session: BridgeSession) {
-    this.session = session
-    chatSubscribedSessionKey = null
-  }
-
   fun setMainSessionKey(sessionKey: String?) {
     val trimmed = sessionKey?.trim().orEmpty()
     if (trimmed.isEmpty()) return
@@ -136,7 +133,7 @@ class TalkModeManager(
     }
   }
 
-  fun handleBridgeEvent(event: String, payloadJson: String?) {
+  fun handleGatewayEvent(event: String, payloadJson: String?) {
     if (event != "chat") return
     if (payloadJson.isNullOrBlank()) return
     val pending = pendingRunId ?: return
@@ -306,25 +303,24 @@ class TalkModeManager(
 
     reloadConfig()
     val prompt = buildPrompt(transcript)
-    val bridge = session
+    if (!isConnected()) {
-    if (bridge == null) {
+      _statusText.value = "Gateway not connected"
-      _statusText.value = "Bridge not connected"
+      Log.w(tag, "finalize: gateway not connected")
-      Log.w(tag, "finalize: bridge not connected")
       start()
       return
     }
 
     try {
       val startedAt = System.currentTimeMillis().toDouble() / 1000.0
-      subscribeChatIfNeeded(bridge = bridge, sessionKey = mainSessionKey)
+      subscribeChatIfNeeded(session = session, sessionKey = mainSessionKey)
       Log.d(tag, "chat.send start sessionKey=${mainSessionKey.ifBlank { "main" }} chars=${prompt.length}")
-      val runId = sendChat(prompt, bridge)
+      val runId = sendChat(prompt, session)
       Log.d(tag, "chat.send ok runId=$runId")
       val ok = waitForChatFinal(runId)
       if (!ok) {
         Log.w(tag, "chat final timeout runId=$runId; attempting history fallback")
       }
-      val assistant = waitForAssistantText(bridge, startedAt, if (ok) 12_000 else 25_000)
+      val assistant = waitForAssistantText(session, startedAt, if (ok) 12_000 else 25_000)
       if (assistant.isNullOrBlank()) {
         _statusText.value = "No reply"
         Log.w(tag, "assistant text timeout runId=$runId")
@@ -343,12 +339,13 @@ class TalkModeManager(
     }
   }
 
-  private suspend fun subscribeChatIfNeeded(bridge: BridgeSession, sessionKey: String) {
+  private suspend fun subscribeChatIfNeeded(session: GatewaySession, sessionKey: String) {
+    if (!supportsChatSubscribe) return
     val key = sessionKey.trim()
     if (key.isEmpty()) return
     if (chatSubscribedSessionKey == key) return
     try {
-      bridge.sendEvent("chat.subscribe", """{"sessionKey":"$key"}""")
+      session.sendNodeEvent("chat.subscribe", """{"sessionKey":"$key"}""")
       chatSubscribedSessionKey = key
       Log.d(tag, "chat.subscribe ok sessionKey=$key")
     } catch (err: Throwable) {
@@ -370,7 +367,7 @@ class TalkModeManager(
     return lines.joinToString("\n")
   }
 
-  private suspend fun sendChat(message: String, bridge: BridgeSession): String {
+  private suspend fun sendChat(message: String, session: GatewaySession): String {
     val runId = UUID.randomUUID().toString()
     val params =
       buildJsonObject {
@@ -380,7 +377,7 @@ class TalkModeManager(
         put("timeoutMs", JsonPrimitive(30_000))
         put("idempotencyKey", JsonPrimitive(runId))
       }
-    val res = bridge.request("chat.send", params.toString())
+    val res = session.request("chat.send", params.toString())
     val parsed = parseRunId(res) ?: runId
     if (parsed != runId) {
       pendingRunId = parsed
@@ -411,13 +408,13 @@ class TalkModeManager(
   }
 
   private suspend fun waitForAssistantText(
-    bridge: BridgeSession,
+    session: GatewaySession,
     sinceSeconds: Double,
     timeoutMs: Long,
   ): String? {
     val deadline = SystemClock.elapsedRealtime() + timeoutMs
     while (SystemClock.elapsedRealtime() < deadline) {
-      val text = fetchLatestAssistantText(bridge, sinceSeconds)
+      val text = fetchLatestAssistantText(session, sinceSeconds)
       if (!text.isNullOrBlank()) return text
       delay(300)
     }
@@ -425,11 +422,11 @@ class TalkModeManager(
   }
 
   private suspend fun fetchLatestAssistantText(
-    bridge: BridgeSession,
+    session: GatewaySession,
     sinceSeconds: Double? = null,
   ): String? {
     val key = mainSessionKey.ifBlank { "main" }
-    val res = bridge.request("chat.history", "{\"sessionKey\":\"$key\"}")
+    val res = session.request("chat.history", "{\"sessionKey\":\"$key\"}")
     val root = json.parseToJsonElement(res).asObjectOrNull() ?: return null
     val messages = root["messages"] as? JsonArray ?: return null
     for (item in messages.reversed()) {
@@ -813,12 +810,11 @@ class TalkModeManager(
   }
 
   private suspend fun reloadConfig() {
-    val bridge = session ?: return
     val envVoice = System.getenv("ELEVENLABS_VOICE_ID")?.trim()
     val sagVoice = System.getenv("SAG_VOICE_ID")?.trim()
     val envKey = System.getenv("ELEVENLABS_API_KEY")?.trim()
     try {
-      val res = bridge.request("config.get", "{}")
+      val res = session.request("config.get", "{}")
       val root = json.parseToJsonElement(res).asObjectOrNull()
       val config = root?.get("config").asObjectOrNull()
       val talk = config?.get("talk").asObjectOrNull()

docs/platforms/android.md

@@ -52,7 +52,7 @@ For tailnet-only setups (recommended for Vienna ⇄ London), bind the gateway to
 From the gateway machine:
 
 ```bash
-dns-sd -B _clawdbot._tcp local.
+dns-sd -B _clawdbot-gateway._tcp local.
 ```
 
 More debugging notes: [Bonjour](/gateway/bonjour).
@@ -61,7 +61,7 @@ More debugging notes: [Bonjour](/gateway/bonjour).
 
 Android NSD/mDNS discovery won’t cross networks. If your Android node and the gateway are on different networks but connected via Tailscale, use Wide-Area Bonjour / unicast DNS-SD instead:
 
-1) Set up a DNS-SD zone (example `clawdbot.internal.`) on the gateway host and publish `_clawdbot._tcp` records.
+1) Set up a DNS-SD zone (example `clawdbot.internal.`) on the gateway host and publish `_clawdbot-gateway._tcp` records.
 2) Configure Tailscale split DNS for `clawdbot.internal` pointing at that DNS server.
 
 Details and example CoreDNS config: [Bonjour](/gateway/bonjour).