merge: integrate wired and wireless CAN into N7Web

README.md

@@ -113,6 +113,13 @@ config/gesture/default.yaml
 
 同一局域网的其他电脑需要体验时，使用 `make dev-lan` 监听全部网络接口。服务启动日志会打印实际 LAN 地址，例如 `http://172.20.10.5:8000`。前端和 API 使用同源访问，不需要 CORS，也不会把 `OPENAI_API_KEY` 发送到浏览器。若没有启用 `.env.auth`，任何可达设备都能触发服务端 GPT 请求，因此未认证的 LAN 模式只应在可信网络内临时演示。
 
+Linux 上使用 USBCANFD-200U 被动同步 CH1 车辆状态时，使用
+`zlgcan-linux` 后端。USB 权限、60 MHz/500k/2M 位时序、只读配置和状态接口
+验证见 [Linux ZLG 车辆状态接入](docs/workflows/linux-zlg-vehicle-state.md)。
+同一页面也可选择本机 NanoMQ 无线链路，其中 CAN0 对应副驾座椅、CAN1 对应
+其余车辆状态和控制；MQTT 主题、原始 CAN 帧 JSON 合约和有线/无线共用安全
+门禁见同一文档。
+
 ## 认证与公网体验
 
 公网演示必须启用 `.env.auth` 中的服务端认证。密码使用 PBKDF2-SHA256 哈希保存；认证成功后签发有有效期的 HMAC 会话 Cookie，Cookie 使用 `HttpOnly` 和 `SameSite=Strict`，经 HTTPS 代理时自动增加 `Secure`。登录失败按来源 IP 限流，GPT 请求按体验账号限制每分钟调用次数。未登录访问页面会跳转 `/login`，未登录 API 请求返回 `401`。

apps/web-console/app.js

@@ -39,10 +39,16 @@ function loadHardwareClientId() {
   return clientId;
 }
 
+function loadControlTransport() {
+  const stored = localStorage.getItem("cognitive-agent.control-transport");
+  return ["wired_can", "wireless_mqtt"].includes(stored) ? stored : "wired_can";
+}
+
 const state = {
   provider: "openai",
   reasoningEffort: localStorage.getItem("cognitive-agent.reasoning-effort") || "medium",
   executionMode: "dry_run",
+  controlTransport: loadControlTransport(),
   conversationId: loadConversationId(),
   vehicleId: null,
   runtime: null,
@@ -61,6 +67,7 @@ const state = {
   hardwareAccessPoller: null,
   physicalStatePoller: null,
   physicalStateSyncPromise: null,
+  passengerStateSyncPromise: null,
   pendingModeProfileId: null,
   modeRunTimer: null,
   modeDraftCommand: "",
@@ -76,11 +83,18 @@ const apiRequest = (input, options) => window.CognitiveAgentNetwork.request(inpu
 // workflow so the UI does not report failure while the seat is still moving.
 const HARDWARE_REQUEST_TIMEOUT_MS = 15 * 60 * 1000;
 const REQUEST_TIMEOUT_MS = 45 * 1000;
+const DEFAULT_PHYSICAL_STATE_POLL_INTERVAL_MS = 5000;
 
 function requestTimeoutForExecutionMode(mode) {
   return mode === "hardware" ? HARDWARE_REQUEST_TIMEOUT_MS : REQUEST_TIMEOUT_MS;
 }
 
+function physicalStatePollIntervalMs() {
+  const configured = Number(selectedVehicleTransport()?.state_sync?.poll_interval_ms);
+  if (!Number.isFinite(configured)) return DEFAULT_PHYSICAL_STATE_POLL_INTERVAL_MS;
+  return Math.max(250, Math.min(DEFAULT_PHYSICAL_STATE_POLL_INTERVAL_MS, configured));
+}
+
 function refreshIcons() {
   if (window.lucide) {
     window.lucide.createIcons({ attrs: { "aria-hidden": "true" } });
@@ -4222,12 +4236,80 @@ function isLocalDecisionHost() {
   return ["127.0.0.1", "localhost", "::1"].includes(window.location.hostname);
 }
 
+function vehicleTransportOptions() {
+  return Array.isArray(state.runtime?.vehicle_transports?.options)
+    ? state.runtime.vehicle_transports.options
+    : [];
+}
+
+function selectedVehicleTransport() {
+  return vehicleTransportOptions().find((item) => item.id === state.controlTransport)
+    || (state.controlTransport === "wireless_mqtt"
+      ? state.runtime?.vehicle_mqtt
+      : state.runtime?.vehicle_can)
+    || null;
+}
+
 function isDriverOnlyCh1Runtime() {
-  return state.runtime?.vehicle_can?.configured === true
+  const transport = selectedVehicleTransport();
-    && state.runtime?.vehicle_can?.target_policy === "ch1_body_can_driver_only"
+  return transport?.configured === true
+    && transport?.target_policy === "ch1_body_can_driver_only"
     && state.runtime?.hardware?.configured !== true;
 }
 
+function renderControlTransport() {
+  const options = vehicleTransportOptions();
+  $$('[data-control-transport]').forEach((button) => {
+    const id = button.dataset.controlTransport;
+    const runtime = options.find((item) => item.id === id)
+      || (id === "wireless_mqtt" ? state.runtime?.vehicle_mqtt : state.runtime?.vehicle_can);
+    const selected = id === state.controlTransport;
+    button.classList.toggle("active", selected);
+    button.setAttribute("aria-pressed", String(selected));
+    // Transport choice is intentionally manual. An unavailable connection is
+    // shown as offline, but it must never disable or silently change the
+    // operator's wired/wireless selection.
+    button.disabled = false;
+    button.dataset.connectionState = runtime?.state_sync?.state === "online" ? "online" : "offline";
+    button.title = runtime?.state_configured === true
+      ? runtime?.state_sync?.last_error || ""
+      : `${id === "wireless_mqtt" ? "无线 MQTT" : "有线 CAN"} 当前未配置（仍可手动选择）`;
+  });
+  const selected = selectedVehicleTransport();
+  const note = $("#vehicleTransportNote");
+  if (!note) return;
+  if (selected?.state_configured !== true) {
+    note.textContent = state.controlTransport === "wireless_mqtt"
+      ? "已手动选择无线控制 · MQTT 当前未配置或不可用"
+      : "已手动选择有线控制 · ZLG CAN 当前未配置或不可用";
+    return;
+  }
+  if (state.controlTransport === "wireless_mqtt") {
+    const connection = selected?.state_sync?.state === "online" ? "已连接" : "未连接";
+    note.textContent = `MQTT ${connection} · 状态 ${selected?.condition_topic || "n7/n7-headunit/can/state"} · 控制 ${selected?.control_topic || "n7/can_control"}`;
+  } else {
+    const connection = selected?.state_sync?.state === "online" ? "已连接" : "未连接";
+    note.textContent = `ZLG 有线 ${connection} · CH${selected?.channel ?? 1} · CAN FD 500k/2M`;
+  }
+}
+
+function selectControlTransport(transport) {
+  if (!["wired_can", "wireless_mqtt"].includes(transport)) return;
+  const changed = state.controlTransport !== transport;
+  state.controlTransport = transport;
+  localStorage.setItem("cognitive-agent.control-transport", transport);
+  if (changed) {
+    state.conversationId = createConversationId();
+    sessionStorage.setItem("cognitive-agent.conversation-id", state.conversationId);
+    state.seatFeedbackSources.passenger = "unavailable";
+    state.seatFeedbackSources.driver = "unavailable";
+  }
+  state.vehicleStateSnapshot = null;
+  state.vehicleStateTurn = -1;
+  renderControlTransport();
+  applyRuntimeTargetPolicy(state.runtime);
+}
+
 function renderHardwareAccess(status) {
   state.hardwareAccess = status;
 }
@@ -4258,6 +4340,8 @@ function updateSeatFeedbackModeLabel() {
     physical_can: "实车已同步",
     physical_partial: "物理反馈不完整",
     physical_can_ch1: "实车已同步",
+    wireless_mqtt_ch0: "MQTT 已同步",
+    wireless_mqtt_ch1: "MQTT 已同步",
     simulated_hardware: "模拟 HIL",
     simulated: "虚拟反馈",
     unavailable: "不可用",
@@ -4266,6 +4350,8 @@ function updateSeatFeedbackModeLabel() {
     physical_can: "实车",
     physical_partial: "部分",
     physical_can_ch1: "实车",
+    wireless_mqtt_ch0: "MQTT",
+    wireless_mqtt_ch1: "MQTT",
     simulated_hardware: "模拟",
     simulated: "虚拟",
     unavailable: "未连接",
@@ -4283,7 +4369,11 @@ function updateSeatFeedbackModeLabel() {
 }
 
 function selectExecutionMode(mode) {
-  if (mode === "hardware" && !state.runtime?.hardware_execution_allowed) return;
+  const selectedTransport = selectedVehicleTransport();
+  const hardwareExecutionReady = Boolean(
+    state.runtime?.hardware?.configured || selectedTransport?.configured,
+  );
+  if (mode === "hardware" && !hardwareExecutionReady) return;
   if (mode === "simulated_hardware" && !state.runtime?.simulated_hardware?.enabled) return;
   state.executionMode = mode;
   $$('[data-execution-mode]').forEach((button) => {
@@ -4291,7 +4381,8 @@ function selectExecutionMode(mode) {
   });
   const hardware = mode === "hardware";
   const simulatedHardware = mode === "simulated_hardware";
-  const vehicleCanReady = Boolean(state.runtime?.vehicle_can?.configured);
+  const vehicleCanReady = Boolean(selectedTransport?.configured);
+  const mqttSelected = state.controlTransport === "wireless_mqtt";
   const ch1DriverOnly = isDriverOnlyCh1Runtime();
   $("#simulationFaultField").hidden = !simulatedHardware;
   $("#executionBadge").className = `status-badge ${hardware ? "" : simulatedHardware ? "warning" : "neutral"}`.trim();
@@ -4305,7 +4396,7 @@ function selectExecutionMode(mode) {
     : simulatedHardware ? "模拟台架隔离边界" : "虚拟执行边界";
   $("#safetyText").textContent = hardware
     ? ch1DriverOnly && vehicleCanReady
-      ? "仅使用 ZLG CH1 控制主驾座椅与已验证车身设备；每次动作前必须确认 P 挡和 0 km/h，并以 CH1 状态帧回读为准。CH0、副驾 T2G 与 IAR 路径均不参与。"
+      ? `仅使用${mqttSelected ? "本地 MQTT 无线链路" : "ZLG 有线 CH1"}控制主驾座椅与已验证车身设备；每次动作前必须确认 P 挡和 0 km/h，并以 CH1 状态帧回读为准。CH0、副驾 T2G 与 IAR 路径均不参与。`
       : vehicleCanReady
       ? "同一 CAN 盒由单进程持有：CH0 控制副驾四电机并校验板端反馈；CH1 控制主驾四电机与车身设备，每次动作前校验 P 挡、零车速和对应状态帧。"
       : "当前仅通道 0 连接副驾座椅台架并校验板端反馈；车端 CAN 未启用，模式中的其他车舱领域保持虚拟执行。"
@@ -4315,7 +4406,9 @@ function selectExecutionMode(mode) {
   $("#executeStageLabel").textContent = hardware ? "台架执行" : simulatedHardware ? "故障仿真" : "虚拟执行";
   $("#feedbackModeLabel").textContent = hardware
     ? (ch1DriverOnly
-      ? "CH1 BODY CAN · AUTHORITATIVE PHYSICAL FEEDBACK"
+      ? (mqttSelected
+        ? "MQTT CH1 · AUTHORITATIVE CAN FEEDBACK"
+        : "CH1 BODY CAN · AUTHORITATIVE PHYSICAL FEEDBACK")
       : "T2G BENCH · PHYSICAL CAN FEEDBACK")
     : simulatedHardware
       ? "SIMULATED HIL · FAULT INJECTION"
@@ -5019,13 +5112,18 @@ async function saveCurrentModeProfile() {
 }
 
 function applyRuntimeTargetPolicy(runtime) {
-  const passengerReady = runtime?.hardware?.configured === true;
+  const selectedTransport = selectedVehicleTransport();
-  const driverReady = runtime?.vehicle_can?.configured === true;
+  const wirelessDualChannel = state.controlTransport === "wireless_mqtt"
+    && selectedTransport?.target_policy === "dual_channel_mqtt_can0_passenger_can1_vehicle";
+  const passengerReady = wirelessDualChannel
+    ? selectedTransport?.configured === true
+    : runtime?.hardware?.configured === true;
+  const driverReady = selectedTransport?.configured === true;
   const driverOnly = driverReady && !passengerReady;
   const stage = $("#seatTwin");
   if (stage) {
     stage.dataset.passengerChannel = "CH0";
-    stage.dataset.driverChannel = "CH1";
+    stage.dataset.driverChannel = state.controlTransport === "wireless_mqtt" ? "MQTT" : "CH1";
     stage.dataset.passengerConfigured = String(passengerReady);
     stage.dataset.driverConfigured = String(driverReady);
   }
@@ -5072,6 +5170,7 @@ async function loadRuntime() {
     const response = await apiRequest("/api/runtime", { cache: "no-store" });
     if (!response.ok) throw new Error(`HTTP ${response.status}`);
     state.runtime = await response.json();
+    renderControlTransport();
     applyRuntimeTargetPolicy(state.runtime);
     populateVehicleSelector();
     populateModeChips();
@@ -5080,12 +5179,17 @@ async function loadRuntime() {
       state.reasoningEffort = configuredEffort;
     }
     const hardware = state.runtime.hardware || {};
-    const vehicleCan = state.runtime.vehicle_can || {};
+    const vehicleCan = selectedVehicleTransport() || {};
-    const linkedHardwareReady = Boolean(hardware.configured && vehicleCan.configured);
+    const mqttSelected = state.controlTransport === "wireless_mqtt";
-    const seatHardwareReady = Boolean(hardware.configured);
+    const mqttDualChannel = mqttSelected
+      && vehicleCan.target_policy === "dual_channel_mqtt_can0_passenger_can1_vehicle";
+    const seatHardwareReady = Boolean(
+      mqttDualChannel ? vehicleCan.configured : hardware.configured,
+    );
     const vehicleHardwareReady = Boolean(vehicleCan.configured);
+    const linkedHardwareReady = seatHardwareReady && vehicleHardwareReady;
     const ch1DriverOnly = vehicleHardwareReady && !seatHardwareReady;
-    const hardwareExecutionReady = Boolean(state.runtime.hardware_execution_allowed);
+    const hardwareExecutionReady = Boolean(hardware.configured || vehicleCan.configured);
     const badge = $("#modelBadge");
     const gptButton = $('[data-provider="openai"]');
     if (state.runtime.openai_available) {
@@ -5120,32 +5224,35 @@ async function loadRuntime() {
       && hardware.access_policy === "local_approval_idle_lease"
       ? ` · 本地审批 · 空闲 ${hardware.access_inactivity_timeout_seconds || 180} 秒自动停止`
       : "";
+    const vehicleRouteText = mqttSelected
+      ? `MQTT ${vehicleCan.host || "127.0.0.1"}:${vehicleCan.port || 1883} · ${vehicleCan.condition_topic || "n7/n7-headunit/can/state"} / ${vehicleCan.control_topic || "n7/can_control"}`
+      : `${vehicleCan.backend || "zlgcan"} · CH${vehicleCan.channel ?? 1} 车身 CAN FD ${Number(vehicleCan.arbitration?.bitrate || 500000) / 1000}k/${Number(vehicleCan.data?.bitrate || 2000000) / 1000000}M`;
     $("#hardwareNote").textContent = ch1DriverOnly && vehicleHardwareReady && !seatHardwareReady
-      ? `${vehicleCan.backend} · CH${vehicleCan.channel} 车身 CAN FD ${vehicleCan.arbitration.bitrate / 1000}k/${vehicleCan.data.bitrate / 1000000}M · 仅主驾/车端白名单 · CH0/T2G/IAR 已禁用${accessText}${concurrencyText}`
+      ? `${vehicleRouteText} · 仅主驾/车端白名单 · CH0/T2G/IAR 已禁用${accessText}${concurrencyText}`
       : linkedHardwareReady
-      ? `${hardware.backend} · CH${hardware.channel} 座椅 ${hardware.bitrate / 1000} kbit/s · CH${vehicleCan.channel} 车身 CAN FD ${vehicleCan.arbitration.bitrate / 1000}k/${vehicleCan.data.bitrate / 1000000}M · ${profileText} · ${flashText}${accessText}${concurrencyText}`
+      ? `${mqttDualChannel ? "MQTT CAN0 副驾座椅 · MQTT CAN1 其余车辆" : `${hardware.backend} · CH${hardware.channel} 座椅 ${hardware.bitrate / 1000} kbit/s`} · ${vehicleRouteText} · ${profileText}${mqttDualChannel ? " · 远端自动烧录禁用" : ` · ${flashText}`}${accessText}${concurrencyText}`
       : seatHardwareReady
         ? `${hardware.backend} · CH${hardware.channel} 座椅 ${hardware.bitrate / 1000} kbit/s · ${profileText} · ${flashText} · 车端 CAN 未启用，其他领域保持虚拟执行${accessText}${concurrencyText}`
-      : `联动真实执行已锁定：${profileText}；请完成座椅固件、双通道 ZLG 适配器和车身 CAN FD 配置`;
+      : `真实执行已锁定：${profileText}；当前${mqttSelected ? "无线 MQTT" : "有线 CAN"}控制未通过后端审批配置`;
     $("#hardwareAliasNote").textContent = ch1DriverOnly && vehicleHardwareReady && !seatHardwareReady
-      ? "CH1 → 车身 CAN FD / 主驾座椅 · CH0 与副驾 T2G 路径禁止"
+      ? `${mqttSelected ? "MQTT" : "CH1"} → 车身 CAN / 主驾座椅 · CH0 与副驾 T2G 路径禁止`
       : linkedHardwareReady
-      ? "CH0 → 副驾座椅控制器 · CH1 → 车身 CAN FD"
+      ? `${mqttDualChannel ? "MQTT CAN0" : "CH0"} → 副驾座椅控制器 · ${mqttDualChannel ? "MQTT CAN1" : "CH1"} → 其余车辆 CAN`
       : seatHardwareReady
         ? `CH${hardware.channel} → 副驾座椅控制器 · 车身控制暂用虚拟 CAN`
         : "尚未配置可执行的物理 CAN 通道";
     $("#hardwareBadge").className = `status-badge ${hardwareExecutionReady ? "" : "danger"}`.trim();
     $("#hardwareBadge").innerHTML = ch1DriverOnly && vehicleHardwareReady && !seatHardwareReady
-      ? '<i data-lucide="shield-check"></i>CH1 车端已配置'
+      ? `<i data-lucide="shield-check"></i>${mqttSelected ? "MQTT" : "CH1"} 车端已配置`
       : linkedHardwareReady
       ? '<i data-lucide="shield-check"></i>双通道已配置'
       : seatHardwareReady
         ? '<i data-lucide="shield-check"></i>座椅台架已配置'
       : '<i data-lucide="shield-off"></i>硬件锁定';
     $("#hardwareCoverage").textContent = ch1DriverOnly && vehicleHardwareReady && !seatHardwareReady
-      ? `CH1 主驾 + 车端设备 · 物理字段回读${accessText}${concurrencyText}`
+      ? `${mqttSelected ? "MQTT" : "CH1"} 主驾 + 车端设备 · CAN 字段回读${accessText}${concurrencyText}`
       : linkedHardwareReady
-      ? `CH0 座椅 + CH${vehicleCan.channel} 车身${accessText}${concurrencyText}`
+      ? `CH0 座椅 + ${mqttSelected ? "MQTT" : `CH${vehicleCan.channel}`} 车身${accessText}${concurrencyText}`
       : seatHardwareReady
         ? `CH${hardware.channel} 座椅 · 物理反馈${accessText}${concurrencyText}`
         : "已阻断";
@@ -5166,10 +5273,16 @@ async function loadRuntime() {
 }
 
 async function synchronizePassengerSeatState() {
-  if (!state.runtime?.hardware?.configured) return false;
+  const requestedTransport = state.controlTransport;
+  const mqttSelected = requestedTransport === "wireless_mqtt";
+  const stateReady = mqttSelected
+    ? selectedVehicleTransport()?.state_configured
+    : state.runtime?.hardware?.configured;
+  if (!stateReady) return false;
   const query = new URLSearchParams({
     conversation_id: state.conversationId,
     vehicle_id: state.vehicleId || state.runtime.default_vehicle_id || "",
+    control_transport: requestedTransport,
     hardware_client_id: state.hardwareClientId,
   });
   try {
@@ -5182,15 +5295,16 @@ async function synchronizePassengerSeatState() {
     }
     if (!response.ok) throw new Error(`HTTP ${response.status}`);
     const payload = await response.json();
+    if (requestedTransport !== state.controlTransport) return false;
     renderSeatState({ passenger: payload.actuator_state?.passenger || {} });
     state.seatFeedbackSources.passenger = payload.complete
-      ? "physical_can"
+      ? payload.source === "wireless_mqtt_ch0" ? "wireless_mqtt_ch0" : "physical_can"
       : "physical_partial";
     state.seatFeedbackSource = state.seatFeedbackSources.passenger;
     updateSeatFeedbackModeLabel();
     return true;
   } catch (_error) {
-    if (!state.seatFeedbackSources.passenger.startsWith("physical")) {
+    if (!["physical_can", "wireless_mqtt_ch0"].includes(state.seatFeedbackSources.passenger)) {
       state.seatFeedbackSources.passenger = "unavailable";
       updateSeatFeedbackModeLabel();
     }
@@ -5199,10 +5313,12 @@ async function synchronizePassengerSeatState() {
 }
 
 async function synchronizeDriverSeatState() {
-  if (!state.runtime?.vehicle_can?.configured) return false;
+  if (!selectedVehicleTransport()?.state_configured) return false;
+  const requestedTransport = state.controlTransport;
   const query = new URLSearchParams({
     conversation_id: state.conversationId,
     vehicle_id: state.vehicleId || state.runtime.default_vehicle_id || "",
+    control_transport: requestedTransport,
     hardware_client_id: state.hardwareClientId,
   });
   try {
@@ -5213,13 +5329,16 @@ async function synchronizeDriverSeatState() {
     }
     if (!response.ok) throw new Error(`HTTP ${response.status}`);
     const payload = await response.json();
+    if (requestedTransport !== state.controlTransport) return false;
     applyAuthoritativeVehicleState(payload);
-    state.seatFeedbackSources.driver = payload.complete ? "physical_can_ch1" : "physical_partial";
+    state.seatFeedbackSources.driver = payload.complete
+      ? payload.source === "wireless_mqtt_ch1" ? "wireless_mqtt_ch1" : "physical_can_ch1"
+      : "physical_partial";
     state.seatFeedbackSource = state.seatFeedbackSources.driver;
     updateSeatFeedbackModeLabel();
     return true;
   } catch (_error) {
-    if (!state.seatFeedbackSources.driver.startsWith("physical")) {
+    if (!["physical_can_ch1", "wireless_mqtt_ch1"].includes(state.seatFeedbackSources.driver)) {
       state.seatFeedbackSources.driver = "unavailable";
       updateSeatFeedbackModeLabel();
     }
@@ -5230,7 +5349,22 @@ async function synchronizeDriverSeatState() {
 async function synchronizePhysicalSeatState() {
   if (state.physicalStateSyncPromise) return state.physicalStateSyncPromise;
   state.physicalStateSyncPromise = (async () => {
-    // Both channels share one adapter owner; keep passive reads serialized.
+    if (state.controlTransport === "wireless_mqtt") {
+      // CAN0 may legitimately be absent and wait for its bounded seat-status
+      // timeout. Keep that wait single-flight in the background so cached
+      // CAN1 vehicle state can still refresh at the MQTT polling cadence.
+      if (!state.passengerStateSyncPromise) {
+        let passengerPromise;
+        passengerPromise = synchronizePassengerSeatState().finally(() => {
+          if (state.passengerStateSyncPromise === passengerPromise) {
+            state.passengerStateSyncPromise = null;
+          }
+        });
+        state.passengerStateSyncPromise = passengerPromise;
+      }
+      return synchronizeDriverSeatState();
+    }
+    // The wired channels share one adapter owner; keep passive reads serialized.
     const passenger = await synchronizePassengerSeatState();
     const driver = await synchronizeDriverSeatState();
     return passenger || driver;
@@ -5242,6 +5376,16 @@ async function synchronizePhysicalSeatState() {
   }
 }
 
+function restartPhysicalStatePolling() {
+  if (state.physicalStatePoller) window.clearInterval(state.physicalStatePoller);
+  state.physicalStatePoller = window.setInterval(() => {
+    const activeModule = document.body.dataset.module;
+    if (document.visibilityState !== "visible") return;
+    if (!["self-orchestration", "self-extension"].includes(activeModule)) return;
+    synchronizePhysicalSeatState();
+  }, physicalStatePollIntervalMs());
+}
+
 async function loadAuthStatus() {
   const response = await apiRequest("/api/auth/status", { cache: "no-store" });
   if (!response.ok) return;
@@ -5542,7 +5686,7 @@ function renderDomainState(domainState) {
     if (vehicleSystems) {
       vehicleSystems.targets.climateLevel = Math.max(0, Math.min(7, Number(climate.fan_level) || 0));
       vehicleSystems.targets.climateTemperature = Number(
-        state.runtime?.vehicle_can?.target_policy === "ch1_body_can_driver_only"
+        selectedVehicleTransport()?.target_policy === "ch1_body_can_driver_only"
           ? driverTemperature
           : passengerTemperature,
       ) || 24;
@@ -6170,8 +6314,8 @@ function renderExecution(result) {
     : simulatedHil
       ? `${executedDomains.join(" / ")} 已完成隔离 HIL 仿真，未访问物理 CAN`
     : physical
-      ? state.runtime?.vehicle_can?.target_policy === "ch1_body_can_driver_only"
+      ? selectedVehicleTransport()?.target_policy === "ch1_body_can_driver_only"
-        ? `${executedDomains.join(" / ")} 已通过 CH1 下发，并以车端状态字段确认 ${operationResults.filter((item) => item.status === "succeeded").length} 个步骤`
+        ? `${executedDomains.join(" / ")} 已通过${result.control_transport === "wireless_mqtt" ? " MQTT" : " CH1"}下发，并以车端状态字段确认 ${operationResults.filter((item) => item.status === "succeeded").length} 个步骤`
         : `${executedDomains.join(" / ")} 已下发真实 CAN，并以 IAR 固件实际反馈确认 ${operationResults.filter((item) => item.status === "succeeded").length} 个步骤`
       : `${executedDomains.join(" / ")} 共 ${report.spec.results.length} 个操作已完成 CAN 编码与虚拟执行`;
   if (partiallySucceeded) {
@@ -6306,8 +6450,12 @@ function applyAuthoritativeVehicleState(payload) {
     domainState: domainPatch,
   };
   if (actuatorPatch?.driver) {
-    state.seatFeedbackSource = "physical_can_ch1";
+    const source = payload.control_transport === "wireless_mqtt"
-    state.seatFeedbackSources.driver = "physical_can_ch1";
+      || payload.source === "wireless_mqtt_ch1"
+      ? "wireless_mqtt_ch1"
+      : "physical_can_ch1";
+    state.seatFeedbackSource = source;
+    state.seatFeedbackSources.driver = source;
   }
   renderSeatState(actuatorPatch);
   renderDomainState(domainPatch);
@@ -6346,8 +6494,10 @@ function renderResult(result) {
     if (result.actuator_state?.driver) state.seatFeedbackSources.driver = "simulated_hardware";
   } else if (feedbackSource === "physical_can_ch1"
     && isAuthoritativeVehicleStatePayload(result)) {
-    state.seatFeedbackSource = "physical_can_ch1";
+    state.seatFeedbackSource = result.control_transport === "wireless_mqtt"
-    state.seatFeedbackSources.driver = "physical_can_ch1";
+      ? "wireless_mqtt_ch1"
+      : "physical_can_ch1";
+    state.seatFeedbackSources.driver = state.seatFeedbackSource;
   } else if (reportMode === "hil") {
     state.seatFeedbackSource = result.execution_report?.spec?.physical_state?.complete
       ? "physical_can"
@@ -6393,7 +6543,7 @@ function renderResult(result) {
   renderTrace(result.trace_events || []);
   renderValidation(result.validation || []);
   const ch1HardwareResult = reportMode === "hil"
-    && state.runtime?.vehicle_can?.target_policy === "ch1_body_can_driver_only";
+    && selectedVehicleTransport()?.target_policy === "ch1_body_can_driver_only";
   if (ch1HardwareResult) {
     applyAuthoritativeVehicleState(result);
   } else {
@@ -6457,6 +6607,7 @@ async function submitRequest(event) {
         conversation_id: state.conversationId,
         vehicle_id: state.vehicleId || state.runtime?.default_vehicle_id,
         execution_mode: state.executionMode,
+        control_transport: state.controlTransport,
         ...(state.provider === "openai" ? { reasoning_effort: state.reasoningEffort } : {}),
         ...(state.executionMode === "hardware" && !driverOnlyCh1
           ? { hardware_client_id: state.hardwareClientId }
@@ -6716,6 +6867,12 @@ document.addEventListener("DOMContentLoaded", async () => {
   $$(".segment[data-provider]").forEach((button) => button.addEventListener("click", () => selectProvider(button.dataset.provider)));
   $$('[data-reasoning-effort]').forEach((button) => button.addEventListener("click", () => selectReasoningEffort(button.dataset.reasoningEffort)));
   $$('[data-execution-mode]').forEach((button) => button.addEventListener("click", () => selectExecutionMode(button.dataset.executionMode)));
+  $$('[data-control-transport]').forEach((button) => button.addEventListener("click", async () => {
+    selectControlTransport(button.dataset.controlTransport);
+    await loadRuntime();
+    restartPhysicalStatePolling();
+    await synchronizePhysicalSeatState();
+  }));
   $$(".example-command").forEach((button) => button.addEventListener("click", () => {
     $("#utterance").value = button.dataset.example;
   }));
@@ -6732,12 +6889,7 @@ document.addEventListener("DOMContentLoaded", async () => {
     );
   }
   await synchronizePhysicalSeatState();
-  state.physicalStatePoller = window.setInterval(() => {
+  restartPhysicalStatePolling();
-    const activeModule = document.body.dataset.module;
-    if (document.visibilityState !== "visible") return;
-    if (!["self-orchestration", "self-extension"].includes(activeModule)) return;
-    synchronizePhysicalSeatState();
-  }, 5000);
   if (new URLSearchParams(window.location.search).get("autorun") === "1") {
     $("#requestForm").requestSubmit();
   }

apps/web-console/console-v2.css

@@ -346,6 +346,63 @@
   display: none;
 }
 
+.console-v2 .v2-transport-field {
+  padding: 8px;
+  background: rgba(255, 255, 255, 0.72);
+  border: 1px solid rgba(255, 255, 255, 0.78);
+  border-radius: 10px;
+}
+
+.console-v2 .v2-transport-field > .field-label {
+  margin-bottom: 6px;
+}
+
+.console-v2 .v2-transport-field .vehicle-transport-options {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 5px;
+}
+
+.console-v2 .v2-transport-field .mode-option {
+  min-width: 0;
+  min-height: 32px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 5px;
+  padding: 5px 7px;
+  color: #657879;
+  background: rgba(246, 249, 248, 0.92);
+  border: 1px solid rgba(105, 137, 137, 0.16);
+  border-radius: 8px;
+  font-size: 10px;
+  font-weight: 850;
+  cursor: pointer;
+}
+
+.console-v2 .v2-transport-field .mode-option svg {
+  width: 14px;
+  height: 14px;
+}
+
+.console-v2 .v2-transport-field .mode-option.active {
+  color: #fff;
+  background: linear-gradient(145deg, var(--v2-accent), var(--v2-accent-strong));
+  border-color: transparent;
+  box-shadow: 0 5px 13px color-mix(in srgb, var(--v2-accent) 20%, transparent);
+}
+
+.console-v2 .v2-transport-field > #vehicleTransportNote {
+  display: block;
+  margin: 6px 1px 0;
+  overflow: hidden;
+  color: #809091;
+  font-size: 8px;
+  line-height: 1.35;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
 .console-v2 .v2-config-card {
   min-width: 0;
   min-height: var(--v2-sidebar-card-height);

apps/web-console/console-v2.js

@@ -293,6 +293,7 @@
 
   function buildConfigFields(configStack, originalForm) {
     const vehicleField = $(".vehicle-field", originalForm);
+    const transportField = $("#vehicleTransportField", originalForm);
     const providerField = $(".field-group:has(.segmented [data-provider])", originalForm);
     const reasoningField = $("#reasoningField", originalForm);
     const executionField = $(".field-group:has(.execution-mode-options)", originalForm);
@@ -319,6 +320,11 @@
       configStack.append(vehicleField);
     }
 
+    if (transportField) {
+      transportField.classList.add("v2-config-field", "v2-transport-field");
+      configStack.append(transportField);
+    }
+
     const modelField = make("div", "v2-config-field v2-config-card v2-model-field", `
       <i data-lucide="sparkles"></i>
       <div><small>推理模型</small><strong id="v2ModelValue">模型检测中</strong></div>

apps/web-console/index.html

@@ -9,18 +9,18 @@
     <link rel="manifest" href="/manifest.webmanifest" />
     <link rel="icon" href="/icons/app-icon-192.png" />
     <title>511工程-智能座舱</title>
-    <link rel="stylesheet" href="/styles.css?v=dual-seat-9" />
+    <link rel="stylesheet" href="/styles.css?v=dual-seat-10" />
-    <link rel="stylesheet" href="/console-v2.css?v=sync-layout-26" />
+    <link rel="stylesheet" href="/console-v2.css?v=sync-layout-27" />
     <link rel="stylesheet" href="/self-extension.css?v=sync-layout-26" />
     <script src="/vendor/lucide/0.468.0/lucide.min.js" defer></script>
     <script src="/vendor/three/0.147.0/three.min.js" defer></script>
     <script src="/vendor/three/0.147.0/fflate.min.js" defer></script>
     <script src="/vendor/three/0.147.0/FBXLoader.js" defer></script>
     <script src="/network.js?v=android-pad-1" defer></script>
-    <script src="/app.js?v=dual-seat-85" defer></script>
+    <script src="/app.js?v=dual-seat-90" defer></script>
     <script type="module" src="/gesture-control.js?v=android-pad-8"></script>
     <script src="/pwa.js?v=android-pad-2" defer></script>
-    <script src="/console-v2.js?v=sync-layout-26" defer></script>
+    <script src="/console-v2.js?v=sync-layout-27" defer></script>
     <script src="/self-extension.js?v=sync-layout-26" defer></script>
   </head>
   <body>
@@ -140,6 +140,19 @@
             <p class="provider-note" id="hardwareAliasNote">所有座椅能力仅控制副驾实体电机、加热与通风执行器</p>
           </div>
 
+          <div class="field-group" id="vehicleTransportField">
+            <span class="field-label">车辆连接方式</span>
+            <div class="segmented vehicle-transport-options" role="group" aria-label="车辆连接方式">
+              <button type="button" class="mode-option active" data-control-transport="wired_can">
+                <i data-lucide="cable"></i>有线控制
+              </button>
+              <button type="button" class="mode-option" data-control-transport="wireless_mqtt">
+                <i data-lucide="wifi"></i>无线控制
+              </button>
+            </div>
+            <p class="provider-note" id="vehicleTransportNote">正在检查车辆连接</p>
+          </div>
+
           <div class="field-group simulation-fault-field" id="simulationFaultField" hidden>
             <label class="field-label" for="simulationFault">故障注入场景</label>
             <select id="simulationFault" aria-label="选择模拟硬件故障">

apps/web-console/service-worker.js

@@ -1,16 +1,16 @@
-const CACHE_VERSION = "cognitive-agent-pad-v178";
+const CACHE_VERSION = "cognitive-agent-pad-v179";
 const SHELL_CACHE = `${CACHE_VERSION}-shell`;
 const RUNTIME_CACHE = `${CACHE_VERSION}-runtime`;
 const APP_SHELL = [
   "/",
   "/index.html",
-  "/styles.css?v=dual-seat-9",
+  "/styles.css?v=dual-seat-10",
   "/network.js?v=android-pad-1",
-  "/app.js?v=dual-seat-85",
+  "/app.js?v=dual-seat-90",
   "/gesture-control.js?v=android-pad-8",
   "/pwa.js?v=android-pad-2",
-  "/console-v2.css?v=sync-layout-26",
+  "/console-v2.css?v=sync-layout-27",
-  "/console-v2.js?v=sync-layout-26",
+  "/console-v2.js?v=sync-layout-27",
   "/self-extension.css?v=sync-layout-26",
   "/self-extension.js?v=sync-layout-26",
   "/assets/pets/self-extension-cat.png?v=3",

apps/web-console/styles.css

@@ -5071,6 +5071,24 @@ pre {
   grid-template-columns: repeat(3, minmax(0, 1fr));
 }
 
+.vehicle-transport-options {
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+}
+
+.vehicle-transport-options .mode-option[data-connection-state="offline"] {
+  color: var(--muted);
+}
+
+.vehicle-transport-options .mode-option[data-connection-state="online"]::after {
+  content: "";
+  width: 7px;
+  height: 7px;
+  margin-left: 4px;
+  border-radius: 50%;
+  background: #2ccf83;
+  box-shadow: 0 0 8px rgba(44, 207, 131, 0.65);
+}
+
 .simulation-fault-field select {
   width: 100%;
   min-height: 44px;

config/environments/linux_vehicle_state.example.env

@@ -0,0 +1,23 @@
+# Read-only vehicle-state synchronization through ZLG's Linux VCI SDK.
+# Keep the approval token unset: hardware transmit remains locked.
+COGNITIVE_AGENT_VEHICLE_CAN_ENABLED=true
+COGNITIVE_AGENT_VEHICLE_CAN_BACKEND=zlgcan-linux
+COGNITIVE_AGENT_VEHICLE_CAN_CHANNEL=1
+COGNITIVE_AGENT_VEHICLE_CAN_REQUIRED_CHANNEL=1
+COGNITIVE_AGENT_VEHICLE_CAN_ARBITRATION_BITRATE=500000
+COGNITIVE_AGENT_VEHICLE_CAN_DATA_BITRATE=2000000
+COGNITIVE_AGENT_VEHICLE_CAN_TERMINATION_ENABLED=false
+COGNITIVE_AGENT_ZLGCAN_DEVICE_TYPE=33
+COGNITIVE_AGENT_ZLGCAN_DEVICE_INDEX=0
+COGNITIVE_AGENT_ZLGCAN_LINUX_LIBRARY=/home/orin/project511/project-code/canfd/libusbcanfd.so
+COGNITIVE_AGENT_SHARED_CAN_RUNTIME_ENABLED=false
+
+# Local NanoMQ wireless dual-CAN relay: CAN0 is the passenger seat; CAN1 is the
+# rest of the vehicle. State subscription remains available while physical
+# control stays locked unless the existing hardware approval policy is configured.
+COGNITIVE_AGENT_VEHICLE_MQTT_ENABLED=true
+COGNITIVE_AGENT_VEHICLE_MQTT_HOST=127.0.0.1
+COGNITIVE_AGENT_VEHICLE_MQTT_PORT=1883
+COGNITIVE_AGENT_VEHICLE_MQTT_CONDITION_TOPIC=n7/n7-headunit/can/state
+COGNITIVE_AGENT_VEHICLE_MQTT_CONTROL_TOPIC=n7/can_control
+COGNITIVE_AGENT_VEHICLE_MQTT_QOS=1

docs/workflows/linux-zlg-vehicle-state.md

@@ -0,0 +1,174 @@
+# Linux ZLG 车辆状态接入
+
+当前工程可以通过 ZLG Linux VCI SDK 被动读取 USBCANFD-200U 的 CH1，并把
+车辆状态送入 `/api/hardware/vehicle-state` 和前端整车孪生。状态轮询使用独立
+`monitor-only` 桥，桥进程会拒绝所有发送请求。服务启动后由一个常驻监听线程
+持续缓存最新的已验证状态，HTTP 接口不会为每次前端请求反复开关 USB 设备。
+Linux 只读状态模式的前端刷新周期为 500 ms；缓存只保留 3 秒内的新鲜反馈，
+断线后会自动关闭旧桥并重试连接。监听通道只接受本文列出的 11 个标准帧 ID，
+同时在 SDK 桥内保留同样的软件过滤，避免把无关总线流量转发给服务进程。
+
+## 硬件和总线基线
+
+- USB：`3068:0009 ZLG USBCANFD-200U`
+- Linux SDK 设备类型：`33`
+- 通道：CH1
+- 帧格式：11-bit ISO CAN FD，按报文保留 BRS 属性
+- 控制器时钟：60 MHz
+- 仲裁段：500 kbit/s，`tseg1=14, tseg2=3, sjw=2, brp=5`
+- 数据段：2 Mbit/s，`tseg1=10, tseg2=2, sjw=2, brp=1`
+- 终端：默认不启用适配器内部 120 欧；只能按实际拓扑调整
+
+前端车辆概况依赖 `0x342`（档位）、`0x4EB/0x07`（车速）和 `0x407`
+（门锁）。主驾座椅依赖 `0x4FA`、`0x494`。收到其他帧不能替代这些已验证
+反馈。
+
+## 前端有线 / 无线选择
+
+前端“车辆连接方式”提供两个相互独立的传输选项：
+
+- 有线控制：状态和控制都走后端 ZLG CH1。
+- 无线控制：状态订阅 `n7/n7-headunit/can/state`，控制发布到
+  `n7/can_control`；默认 Broker 为 `127.0.0.1:1883`。MQTT CAN0 专用于
+  副驾座椅，MQTT CAN1 专用于除副驾座椅外的车辆状态和控制。
+
+选择保存在当前浏览器，并随车辆状态请求和控制请求一起传给后端。切换传输时
+会建立新的会话上下文，上一条链路缓存的状态不会冒充当前链路状态。两种方式
+共用同一套编译范围检查、P 挡/零车速预检、反馈目标匹配和硬件批准令牌；MQTT
+发布成功只证明 Broker 接收了消息，不能替代 ECU 状态反馈。
+
+MQTT 主题只承载原始 CAN 帧，不接受已经解析的车辆状态 JSON。规范帧格式为：
+
+```json
+{
+  "schema": "n7.can.frame.v1",
+  "arbitration_id": 834,
+  "frame_id": "0x342",
+  "channel": 1,
+  "data_hex": "00 00 00 01 00 00 00 00",
+  "data": [0, 0, 0, 1, 0, 0, 0, 0],
+  "payload_size": 8,
+  "is_fd": true,
+  "bitrate_switch": true,
+  "timestamp": 1787029200.0
+}
+```
+
+`n7/n7-headunit/can/state` 可以发送单帧对象，也可以发送
+`{"frames":[...]}` 批次。接收侧兼容 `can_id`、`canId`、`frame_id` 和
+`dataHex` 等常见字段名，但仍强制 CAN0/CAN1、11 位 ID、1–64 字节长度和
+逐通道反馈 ID 白名单。`n7/can_control` 始终由后端输出上述规范单帧格式，
+其中 `channel` 保留编译计划选择的通道。
+
+无线通道边界为：
+
+- CAN0：经典 CAN 副驾座椅；直接状态接收 `0x301–0x307`、`0x4FA`。当前车端
+  还会以只读 `0x6A0` `SEAT_INFO(0x60)` 查询和 `0x6A2` 响应上报四轴 Hall
+  位置、范围和标志。后端只配对 `C7/7C`、相同序号、`status=0` 的查询响应，
+  再转换成统一的四轴 `0x302` 状态；查询帧不会被当作普通动作执行。
+  无线副驾控制只允许 `0x6A0` 中固件明确提供的运行时 opcode：
+  `STOP(0x63)`、`MOVE(0x64)`、`HEARTBEAT(0x65)` 和
+  `DYNAMIC_START(0x66)`，并等待匹配序号/opcode 的 `0x6A2` 成功响应及新鲜
+  四轴位置反馈。刷写、进入 Bootloader、测试、校准和回零 opcode 全部拒绝；
+  旧 `0x29E/0x300/0x3CE` 不会在该无线 CAN0 路径发布。
+- CAN1：除副驾座椅以外的整车 CAN；状态和控制继续使用项目中已有的 CH1
+  车辆白名单。CAN0 控制 ID 不能经 CAN1 发送，CAN1 控制 ID 也不能经 CAN0
+  发送。
+
+两个通道的协议来源严格分离：
+
+- CAN0 只以 `/home/orin/project511/seat-code-file/seat-ota` 副驾固件为准；
+  入站状态必须是 11 位标准帧、经典 CAN、无 BRS、DLC 8。
+- CAN1 只以
+  `/home/orin/project511/project-code/canfd/CAN矩阵表_filled.xlsx` 为准。
+  例如 `0x42E` 颜色值只有 `0x01–0x1F` 有效，保留值不会显示为
+  真实颜色。
+
+MQTT 消息自带的 `can0Seat.parsed` 和 `can1Vehicle.parsed` 只可用于车端
+诊断，后端不使用它们更新状态或通过安全门禁。
+
+副驾位置换算严格使用固件 `OTA_SEAT_INFO_AXIS0..3_POSITION_RANGE`：响应值低
+16 位为当前位置 Hall 计数，高 16 位为该轴 Hall 范围；
+`OTA_SEAT_INFO_AXIS0..3_FLAGS` 提供 `valid/moving/driver_fault/direction`。四轴
+分别映射为水平、坐垫、靠背和腿托。只读缓存最多保留 3 秒，新建状态请求可
+立即复用新鲜四轴快照，不需要等待下一轮车端查询。
+
+每个 MQTT 总线视图只会收到本通道反馈。发布完成仅代表 Broker 接收消息；
+座椅和整车执行器仍必须等待对应状态 ID 与目标字段匹配，才会报告动作成功。
+当前 seat-ota 固件只提供四轴位置和动态模式控制，没有副驾加热/通风运行时
+opcode；无线模式收到这两类副驾请求会在发布前明确失败，不会伪造反馈。
+
+车端现有 `n7-can-signals/v1` 状态封装也可直接发布到
+`n7/n7-headunit/can/state`。后端优先从顶层 `signals` 读取，避免与嵌套副本重复；
+顶层缺失时会合并 `can0Seat.signals`（默认 CAN0）和
+`can1Vehicle.signals`（默认 CAN1）。接收兼容 `channel: "can0"/"can1"`、
+`channelIndex`、`frameType`、`brs`、`data`/`bytes` 和毫秒时间戳。若同一帧的
+`channel` 与 `channelIndex` 冲突，整批消息会被拒绝。封装中的
+`can0Seat.parsed` 和 `can1Vehicle.parsed` 都不作为权威状态输入；安全预检和
+前端状态仍由原始 CAN 帧通过逐通道白名单解码器生成。带 Unix 时间戳的过期
+CAN1 非安全帧可短暂作为 `display_only` 缓存显示，但不会进入控制执行器的
+反馈队列。过期的 `0x342` 挡位和 `0x4EB` 车速帧会直接拒绝，绝不能用
+旧的 P 挡或零车速结果通过当前控制预检。
+
+无线 CAN0 和 CAN1 状态读取互不持有真实执行独占锁。CAN0 状态缺失或等待时
+不会再让 CAN1 接口返回 `hardware_busy`。前端按通道分别保持 single-flight，
+CAN1 以 500 ms 周期刷新；手动切换有线/无线后会立即按所选后端重新建立轮询
+周期，上一传输方式的迟到响应会被丢弃。
+
+无线副驾动作在向 CAN0 发布前，也必须通过同一条 MQTT 链路上的 CAN1 新鲜
+P 挡与零车速预检。远端链路不会触发本机 IAR 自动烧录；副驾固件升级仍需走
+独立、明确授权的维护流程。
+
+## USB 权限
+
+设备节点必须允许运行服务的用户读写。推荐使用仅授予当前桌面登录用户权限的
+udev 规则：
+
+```bash
+sudo sh -c 'printf "%s\n" '\''SUBSYSTEM=="usb", ATTR{idVendor}=="3068", ATTR{idProduct}=="0009", TAG+="uaccess", MODE="0660"'\'' > /etc/udev/rules.d/50-zlg-usbcanfd.rules'
+sudo udevadm control --reload-rules
+sudo udevadm trigger --attr-match=idVendor=3068 --attr-match=idProduct=0009
+```
+
+若 ACL 没有立即出现，重新插拔适配器。使用以下命令核对，当前服务用户应具有
+`rw`：
+
+```bash
+getfacl -p /dev/bus/usb/001/006
+```
+
+设备编号每次插拔可能变化，应以 `lsusb` 的 Bus/Device 为准。
+
+## 服务配置
+
+将 `config/environments/linux_vehicle_state.example.env` 中的配置复制到仓库
+根目录 `.env`，并按实际 SDK 位置修改
+`COGNITIVE_AGENT_ZLGCAN_LINUX_LIBRARY`。不要设置硬件批准令牌；此时
+`vehicle_can.state_configured=true`，但 `vehicle_can.configured=false`，所以只
+允许状态同步，前端真实执行保持锁定。
+
+启动：
+
+```bash
+make dev
+```
+
+核对运行时：
+
+```bash
+curl -s http://127.0.0.1:8000/api/runtime
+```
+
+车辆状态接口应返回 `source=physical_can_ch1`、实际收到的
+`observed_frame_ids`，以及缺失反馈列表。发送成功、CAN ACK 和状态反馈是不同
+证据层级；只有接口实际收到并解码目标反馈才会更新前端。
+
+## SDK 自检
+
+自检只加载动态库和核对 ABI，不打开 USB：
+
+```bash
+.venv/bin/python src/cognitive_agent/infrastructure/can/zlgcan_linux_bridge.py \
+  --dll /home/orin/project511/project-code/canfd/libusbcanfd.so \
+  --self-test
+```

domains/seat/src/seat_domain/hardware_executor.py

@@ -113,6 +113,7 @@ class HardwareSeatExecutor:
         firmware_guard: T2GFirmwareGuard | None = None,
         synchronize_position_before_first_motion: bool = False,
         position_sync_state: dict[str, bool] | None = None,
+        require_thermal_feedback: bool = True,
     ):
         self.matrix = matrix
         self.bus_factory = bus_factory
@@ -134,6 +135,7 @@ class HardwareSeatExecutor:
             if position_sync_state is not None
             else {"synchronized": False}
         )
+        self.require_thermal_feedback = bool(require_thermal_feedback)
         self._current_samples: dict[int, list[dict[str, Any]]] = {}
 
     @classmethod
@@ -469,26 +471,30 @@ class HardwareSeatExecutor:
             "feedback_value": raw,
         }
 
-    @staticmethod
+    def _physical_state_complete(self, state: dict[str, Any]) -> bool:
-    def _physical_state_complete(state: dict[str, Any]) -> bool:
+        positions_complete = set(state.get("position", {})) == set(
+            PHYSICAL_MOTOR_AXES.values()
+        )
+        if not self.require_thermal_feedback:
+            return positions_complete
         return (
-            set(state.get("position", {})) == set(PHYSICAL_MOTOR_AXES.values())
+            positions_complete
             and isinstance(state.get("ventilation"), dict)
             and isinstance(state.get("heating"), dict)
         )
 
-    @staticmethod
+    def _physical_state_missing(self, state: dict[str, Any]) -> list[str]:
-    def _physical_state_missing(state: dict[str, Any]) -> list[str]:
         missing = [
             axis
             for axis in PHYSICAL_MOTOR_AXES.values()
             if axis not in state.get("position", {})
         ]
-        missing.extend(
+        if self.require_thermal_feedback:
-            feature
+            missing.extend(
-            for feature in ("ventilation", "heating")
+                feature
-            if not isinstance(state.get(feature), dict)
+                for feature in ("ventilation", "heating")
-        )
+                if not isinstance(state.get(feature), dict)
+            )
         return missing
 
     @staticmethod

pyproject.toml

@@ -11,13 +11,14 @@ dependencies = [
   "jsonschema>=4.21",
   "pydantic>=2.6",
   "PyYAML>=6.0",
+  "paho-mqtt>=2,<3",
 ]
 
 [project.optional-dependencies]
 api = ["fastapi>=0.110", "uvicorn>=0.27"]
 can = ["cantools>=39", "python-can>=4.3"]
 llm = ["openai>=1.30"]
-ir = ["paho-mqtt>=2,<3"]
+ir = []
 test = ["pytest>=8", "pytest-cov>=5"]
 dev = ["mypy>=1.9", "ruff>=0.4"]
 
@@ -36,4 +37,3 @@ markers = [
 [tool.ruff]
 line-length = 100
 target-version = "py311"
-

src/cognitive_agent.egg-info/PKG-INFO

@@ -1,22 +1,24 @@
-Metadata-Version: 2.4
+Metadata-Version: 2.4
-Name: cognitive-agent
+Name: cognitive-agent
-Version: 0.1.0
+Version: 0.1.0
-Summary: Configuration-driven cognitive orchestration agent for in-vehicle actuators
+Summary: Configuration-driven cognitive orchestration agent for in-vehicle actuators
-Requires-Python: >=3.11
+Requires-Python: >=3.11
-Requires-Dist: jsonschema>=4.21
+Requires-Dist: jsonschema>=4.21
-Requires-Dist: pydantic>=2.6
+Requires-Dist: pydantic>=2.6
-Requires-Dist: PyYAML>=6.0
+Requires-Dist: PyYAML>=6.0
-Provides-Extra: api
+Provides-Extra: api
-Requires-Dist: fastapi>=0.110; extra == "api"
+Requires-Dist: fastapi>=0.110; extra == "api"
-Requires-Dist: uvicorn>=0.27; extra == "api"
+Requires-Dist: uvicorn>=0.27; extra == "api"
-Provides-Extra: can
+Provides-Extra: can
-Requires-Dist: cantools>=39; extra == "can"
+Requires-Dist: cantools>=39; extra == "can"
-Requires-Dist: python-can>=4.3; extra == "can"
+Requires-Dist: python-can>=4.3; extra == "can"
-Provides-Extra: llm
+Provides-Extra: llm
-Requires-Dist: openai>=1.30; extra == "llm"
+Requires-Dist: openai>=1.30; extra == "llm"
-Provides-Extra: test
+Provides-Extra: ir
-Requires-Dist: pytest>=8; extra == "test"
+Requires-Dist: paho-mqtt<3,>=2; extra == "ir"
-Requires-Dist: pytest-cov>=5; extra == "test"
+Provides-Extra: test
-Provides-Extra: dev
+Requires-Dist: pytest>=8; extra == "test"
-Requires-Dist: mypy>=1.9; extra == "dev"
+Requires-Dist: pytest-cov>=5; extra == "test"
-Requires-Dist: ruff>=0.4; extra == "dev"
+Provides-Extra: dev
+Requires-Dist: mypy>=1.9; extra == "dev"
+Requires-Dist: ruff>=0.4; extra == "dev"

src/cognitive_agent.egg-info/SOURCES.txt

@@ -13,15 +13,40 @@ src/cognitive_agent/application/capability_registry.py
 src/cognitive_agent/application/conversation_state.py
 src/cognitive_agent/application/domain_runtime.py
 src/cognitive_agent/application/gesture_bridge.py
+src/cognitive_agent/application/mode_profile.py
 src/cognitive_agent/application/model_plan_adapter.py
+src/cognitive_agent/application/native_can_feedback.py
+src/cognitive_agent/application/native_can_intent.py
+src/cognitive_agent/application/native_can_relative.py
+src/cognitive_agent/application/native_can_runtime.py
 src/cognitive_agent/application/seat_calibration.py
 src/cognitive_agent/application/seat_service.py
+src/cognitive_agent/application/self_extension.py
+src/cognitive_agent/application/semantic_ir.py
+src/cognitive_agent/application/vehicle_profile.py
+src/cognitive_agent/application/zcan_seat_executor.py
+src/cognitive_agent/application/calibration/__init__.py
+src/cognitive_agent/application/calibration/mqtt_client.py
+src/cognitive_agent/application/calibration/protocol.py
+src/cognitive_agent/application/calibration/service.py
+src/cognitive_agent/application/calibration/transports.py
+src/cognitive_agent/application/calibration/video.py
+src/cognitive_agent/application/self_repair/__init__.py
+src/cognitive_agent/application/self_repair/can_runtime.py
+src/cognitive_agent/application/self_repair/healing_model.py
+src/cognitive_agent/application/self_repair/service.py
+src/cognitive_agent/application/self_repair/signal_diagnostic.py
+src/cognitive_agent/application/self_repair/zcan_bridge.py
 src/cognitive_agent/infrastructure/can/__init__.py
+src/cognitive_agent/infrastructure/can/access.py
 src/cognitive_agent/infrastructure/can/gateway.py
 src/cognitive_agent/infrastructure/can/hardware.py
 src/cognitive_agent/infrastructure/can/matrix.py
 src/cognitive_agent/infrastructure/can/zlgcan_bridge.py
+src/cognitive_agent/infrastructure/can/zlgcan_linux_bridge.py
 src/cognitive_agent/infrastructure/firmware/__init__.py
 src/cognitive_agent/infrastructure/firmware/t2g_seat.py
 src/cognitive_agent/infrastructure/llm/openai_responses.py
-src/cognitive_agent/runtime/contracts.py
+src/cognitive_agent/runtime/contracts.py
+src/cognitive_agent/testing/__init__.py
+src/cognitive_agent/testing/ch1_hil.py

src/cognitive_agent.egg-info/requires.txt

@@ -14,6 +14,9 @@ python-can>=4.3
 mypy>=1.9
 ruff>=0.4
 
+[ir]
+paho-mqtt<3,>=2
+
 [llm]
 openai>=1.30
 

src/cognitive_agent/application/mqtt_ota_seat_executor.py

@@ -0,0 +1,443 @@
+"""Wireless passenger-seat executor for the seat-ota runtime protocol."""
+
+from __future__ import annotations
+
+import threading
+import time
+from datetime import UTC, datetime
+from typing import Any, Callable
+
+from cognitive_agent.infrastructure.can.gateway import CanBus, CanFrame
+from seat_domain import HardwareExecutionError, HardwareSeatExecutor
+
+
+OTA_CONTROL_ID = 0x6A0
+OTA_RESPONSE_ID = 0x6A2
+OTA_CONTROL_MAGIC = 0xC7
+OTA_RESPONSE_MAGIC = 0x7C
+OTA_OPCODE_SEAT_STOP = 0x63
+OTA_OPCODE_SEAT_MOVE = 0x64
+OTA_OPCODE_SEAT_HEARTBEAT = 0x65
+OTA_OPCODE_SEAT_DYNAMIC_START = 0x66
+OTA_SEAT_AXIS_ALL = 0xFF
+OTA_RESPONSE_TIMEOUT_MS = 1_500
+OTA_HEARTBEAT_INTERVAL_MS = 500
+OTA_DYNAMIC_DURATION_SECONDS = 300
+OTA_STATUS_NAMES = {
+    0x00: "OK",
+    0x01: "BAD_MAGIC",
+    0x02: "BAD_OPCODE",
+    0x03: "BAD_STATE",
+    0x04: "BAD_ARGUMENT",
+    0x0C: "RX_OVERFLOW",
+    0x0D: "BUS_OFF",
+}
+
+
+def _now() -> str:
+    return datetime.now(UTC).isoformat().replace("+00:00", "Z")
+
+
+class MqttOtaSeatExecutor:
+    """Map verified seat plans to the board's bounded OTA runtime opcodes.
+
+    Flash, bootloader-entry, calibration, homing and test opcodes are not
+    represented here.  The MQTT bus performs a second payload-level check
+    before it will publish any 0x6A0 frame.
+    """
+
+    _sequence_lock = threading.Lock()
+    _sequence = 0
+
+    def __init__(
+        self,
+        status_executor: HardwareSeatExecutor,
+        bus_factory: Callable[[], CanBus],
+    ) -> None:
+        self.status_executor = status_executor
+        self.bus_factory = bus_factory
+
+    @classmethod
+    def _next_sequence(cls) -> int:
+        with cls._sequence_lock:
+            cls._sequence = (cls._sequence + 1) & 0xFF
+            if cls._sequence == 0:
+                cls._sequence = 1
+            return cls._sequence
+
+    def read_physical_state(self) -> dict[str, Any]:
+        return self.status_executor.read_physical_state()
+
+    @staticmethod
+    def _axis_state(frame: CanFrame) -> dict[str, Any] | None:
+        if frame.arbitration_id != 0x302 or len(frame.data) != 8:
+            return None
+        flags = frame.data[2]
+        return {
+            "axis": frame.data[0],
+            "moving": bool(flags & (1 << 2)),
+            "position_valid": bool(flags & (1 << 3)),
+            "fault": bool(flags & (1 << 7)) or (frame.data[1] >> 4) == 7,
+            "value_x100": int.from_bytes(frame.data[5:7], "little"),
+            "frame": frame,
+        }
+
+    def _receive_axis(
+        self,
+        bus: CanBus,
+        axis: int,
+        timeout_ms: int,
+    ) -> dict[str, Any]:
+        deadline = time.monotonic() + max(1, timeout_ms) / 1_000
+        while True:
+            remaining_ms = round((deadline - time.monotonic()) * 1_000)
+            if remaining_ms <= 0:
+                raise HardwareExecutionError(
+                    f"timed out after {timeout_ms} ms waiting for wireless seat axis {axis}"
+                )
+            frame = bus.receive(remaining_ms)
+            if frame is None:
+                raise HardwareExecutionError(
+                    f"timed out after {timeout_ms} ms waiting for wireless seat axis {axis}"
+                )
+            state = self._axis_state(frame)
+            if state is not None and state["axis"] == axis:
+                return state
+
+    def _wait_response(
+        self,
+        bus: CanBus,
+        sequence: int,
+        opcode: int,
+        timeout_ms: int = OTA_RESPONSE_TIMEOUT_MS,
+    ) -> tuple[CanFrame, int]:
+        deadline = time.monotonic() + max(1, timeout_ms) / 1_000
+        while True:
+            remaining_ms = round((deadline - time.monotonic()) * 1_000)
+            if remaining_ms <= 0:
+                raise HardwareExecutionError(
+                    f"timed out after {timeout_ms} ms waiting for CAN 0x6A2 "
+                    f"sequence={sequence} opcode=0x{opcode:02X}"
+                )
+            frame = bus.receive(remaining_ms)
+            if frame is None:
+                raise HardwareExecutionError(
+                    f"timed out after {timeout_ms} ms waiting for CAN 0x6A2 "
+                    f"sequence={sequence} opcode=0x{opcode:02X}"
+                )
+            if (
+                frame.arbitration_id != OTA_RESPONSE_ID
+                or len(frame.data) != 8
+                or frame.data[0] != OTA_RESPONSE_MAGIC
+                or frame.data[1] != sequence
+                or frame.data[2] != opcode
+            ):
+                continue
+            status = frame.data[3]
+            value = int.from_bytes(frame.data[4:8], "little")
+            if status != 0:
+                raise HardwareExecutionError(
+                    "seat-ota runtime rejected CAN0 command: "
+                    f"status={OTA_STATUS_NAMES.get(status, f'0x{status:02X}')}, "
+                    f"opcode=0x{opcode:02X}, value=0x{value:08X}",
+                    telemetry={
+                        "response_frame": frame.public(),
+                        "ota_status": status,
+                        "ota_value": value,
+                    },
+                )
+            return frame, value
+
+    def _send_control(
+        self,
+        bus: CanBus,
+        opcode: int,
+        selector: int,
+        argument: int,
+    ) -> tuple[CanFrame, CanFrame, int]:
+        sequence = self._next_sequence()
+        payload = bytes(
+            (OTA_CONTROL_MAGIC, sequence, opcode, selector)
+        ) + int(argument).to_bytes(4, "little")
+        command_frame = bus.send(OTA_CONTROL_ID, payload)
+        response_frame, value = self._wait_response(bus, sequence, opcode)
+        return command_frame, response_frame, value
+
+    def _best_effort_stop(self, bus: CanBus) -> None:
+        try:
+            self._send_control(
+                bus,
+                OTA_OPCODE_SEAT_STOP,
+                OTA_SEAT_AXIS_ALL,
+                0,
+            )
+        except Exception:  # noqa: BLE001 - preserve the primary failure
+            pass
+
+    def _execute_move(
+        self,
+        bus: CanBus,
+        command: dict[str, Any],
+        operations: list[dict[str, Any]],
+    ) -> list[dict[str, Any]]:
+        signals = command["signals"]
+        legacy_opcode = int(signals["Opcode"])
+        if legacy_opcode not in {0x01, 0x0B}:
+            raise HardwareExecutionError(
+                "wireless seat-ota supports absolute four-axis targets only; "
+                f"legacy opcode 0x{legacy_opcode:02X} was not sent"
+            )
+        axis = int(signals["Motor_Selector"])
+        if axis not in range(4):
+            raise HardwareExecutionError("wireless seat axis must be between 0 and 3")
+        target_x100 = int(command["completion"]["value"])
+        tolerance_x100 = int(command["completion"].get("tolerance", 100))
+        target_permille = max(0, min(1_000, round(target_x100 / 10)))
+
+        preflight = self._receive_axis(bus, axis, OTA_RESPONSE_TIMEOUT_MS)
+        if preflight["fault"] or not preflight["position_valid"]:
+            raise HardwareExecutionError(
+                f"wireless seat axis {axis} is faulted or position-invalid before send",
+                telemetry={"preflight_frame": preflight["frame"].public()},
+            )
+
+        command_frame, response_frame, job_state = self._send_control(
+            bus,
+            OTA_OPCODE_SEAT_MOVE,
+            axis,
+            target_permille,
+        )
+        deadline = time.monotonic() + int(command["completion"]["timeout_ms"]) / 1_000
+        next_heartbeat = time.monotonic() + OTA_HEARTBEAT_INTERVAL_MS / 1_000
+        feedback = preflight
+        while True:
+            now = time.monotonic()
+            if now >= deadline:
+                raise HardwareExecutionError(
+                    f"wireless seat axis {axis} did not reach target "
+                    f"{target_x100}±{tolerance_x100}",
+                    telemetry={"last_feedback_frame": feedback["frame"].public()},
+                )
+            wait_until = min(deadline, next_heartbeat)
+            frame = bus.receive(max(1, round((wait_until - now) * 1_000)))
+            state = self._axis_state(frame) if frame is not None else None
+            if state is not None and state["axis"] == axis:
+                feedback = state
+                if state["fault"]:
+                    raise HardwareExecutionError(
+                        f"wireless seat axis {axis} reported a driver fault",
+                        telemetry={"feedback_frame": state["frame"].public()},
+                    )
+                if (
+                    state["position_valid"]
+                    and not state["moving"]
+                    and abs(state["value_x100"] - target_x100) <= tolerance_x100
+                ):
+                    break
+            if time.monotonic() >= next_heartbeat:
+                self._send_control(
+                    bus,
+                    OTA_OPCODE_SEAT_HEARTBEAT,
+                    axis,
+                    0,
+                )
+                next_heartbeat = (
+                    time.monotonic() + OTA_HEARTBEAT_INTERVAL_MS / 1_000
+                )
+
+        output = []
+        for operation in operations:
+            output.append(
+                {
+                    "ref": operation["id"],
+                    "domain": "seat",
+                    "status": "succeeded",
+                    "message": (
+                        "seat-ota 0x6A2 accepted the MOVE lease and fresh CAN0 "
+                        "position telemetry confirmed the target"
+                    ),
+                    "telemetry": {
+                        "motion_axis": operation["capability"].removeprefix(
+                            "seat.set_"
+                        ),
+                        "effective_position_pct": round(
+                            feedback["value_x100"] / 100
+                        ),
+                        "position_valid": True,
+                        "ota_target_permille": target_permille,
+                        "ota_job_state": job_state,
+                        "command_frame": command_frame.public(),
+                        "response_frame": response_frame.public(),
+                        "feedback_frame": feedback["frame"].public(),
+                        "hardware_feedback": True,
+                        "simulated": False,
+                    },
+                }
+            )
+        return output
+
+    def _execute_dynamic(
+        self,
+        bus: CanBus,
+        command: dict[str, Any],
+        operations: list[dict[str, Any]],
+    ) -> list[dict[str, Any]]:
+        if len(operations) != 1:
+            raise HardwareExecutionError(
+                "one wireless seat dynamic command must reference one operation"
+            )
+        operation = operations[0]
+        stopping = operation["capability"] == "seat.stop_dynamic_mode"
+        mode_id = 0 if stopping else int(operation["parameters"]["mode_id"])
+        opcode = OTA_OPCODE_SEAT_STOP if stopping else OTA_OPCODE_SEAT_DYNAMIC_START
+        selector = OTA_SEAT_AXIS_ALL if stopping else mode_id
+        duration = 0 if stopping else OTA_DYNAMIC_DURATION_SECONDS
+        command_frame, response_frame, job_state = self._send_control(
+            bus,
+            opcode,
+            selector,
+            duration,
+        )
+        active = bool(job_state & 1)
+        job_type = (job_state >> 4) & 0x0F
+        if (stopping and active) or (not stopping and (not active or job_type != 4)):
+            raise HardwareExecutionError(
+                "seat-ota response did not confirm the requested dynamic state",
+                telemetry={
+                    "response_frame": response_frame.public(),
+                    "ota_job_state": job_state,
+                },
+            )
+        return [
+            {
+                "ref": operation["id"],
+                "domain": "seat",
+                "status": "succeeded",
+                "message": (
+                    "seat-ota 0x6A2 confirmed dynamic mode stopped"
+                    if stopping
+                    else "seat-ota 0x6A2 confirmed the bounded dynamic mode is active"
+                ),
+                "telemetry": {
+                    "dynamic_mode_id": mode_id,
+                    "dynamic_mode_name": (
+                        "" if stopping else "木马模式" if mode_id == 1 else "动态摇篮模式"
+                    ),
+                    "dynamic_state": 0 if stopping else 1,
+                    "repeat": "none" if stopping else "bounded_runtime",
+                    "max_runtime_ms": 0 if stopping else duration * 1_000,
+                    "ota_job_state": job_state,
+                    "command_frame": command_frame.public(),
+                    "response_frame": response_frame.public(),
+                    "hardware_feedback": True,
+                    "simulated": False,
+                },
+            }
+        ]
+
+    def execute(
+        self,
+        command_plan: dict[str, Any],
+        function_config: dict[str, Any],
+        actuator_state: dict[str, Any] | None = None,
+    ) -> dict[str, Any]:
+        del actuator_state
+        started_at = _now()
+        operations = {
+            item["id"]: item for item in function_config["spec"]["operations"]
+        }
+        results: list[dict[str, Any]] = []
+        bus: CanBus | None = None
+        motion_armed = False
+        physical_state: dict[str, Any] | None = None
+        with HardwareSeatExecutor._adapter_lock:  # noqa: SLF001 - shared CAN0 owner
+            try:
+                bus = self.bus_factory()
+                previous_offset = 0
+                for command in command_plan["spec"]["commands"]:
+                    offset = int(command.get("send_offset_ms", 0))
+                    if offset > previous_offset:
+                        time.sleep((offset - previous_offset) / 1_000)
+                    previous_offset = offset
+                    referenced = [
+                        operations[item]
+                        for item in command["operation_ref"].split(",")
+                    ]
+                    if command["message"] != "T2G_Seat_Move_Command_300":
+                        raise HardwareExecutionError(
+                            "seat-ota firmware does not provide wireless thermal control; "
+                            f"{command['message']} was not sent"
+                        )
+                    opcode = int(command["signals"]["Opcode"])
+                    if opcode in {0x0E, 0x0F}:
+                        motion_armed = opcode == 0x0E
+                        results.extend(
+                            self._execute_dynamic(bus, command, referenced)
+                        )
+                        motion_armed = False
+                    else:
+                        motion_armed = True
+                        results.extend(self._execute_move(bus, command, referenced))
+                        motion_armed = False
+            except Exception as exc:  # noqa: BLE001 - normalize protocol failures
+                if bus is not None and motion_armed:
+                    self._best_effort_stop(bus)
+                reported = {item["ref"] for item in results}
+                operation_ref = next(
+                    (item for item in operations if item not in reported),
+                    next(iter(operations)),
+                )
+                results.append(
+                    {
+                        "ref": operation_ref,
+                        "domain": "seat",
+                        "status": "failed",
+                        "message": str(exc),
+                        "telemetry": {
+                            **getattr(exc, "telemetry", {}),
+                            "error_type": type(exc).__name__,
+                            "stop_all_attempted": bool(bus is not None and motion_armed),
+                            "simulated": False,
+                        },
+                    }
+                )
+            finally:
+                if bus is not None:
+                    try:
+                        physical_state = self.status_executor._capture_physical_state(  # noqa: SLF001
+                            bus,
+                            results,
+                        )
+                        physical_state["source"] = "wireless_mqtt_ch0"
+                    except Exception:  # noqa: BLE001 - keep command outcome primary
+                        physical_state = None
+                    bus.close()
+
+        succeeded = bool(results) and all(
+            item["status"] == "succeeded" for item in results
+        )
+        request_id = function_config["metadata"]["request_id"]
+        spec: dict[str, Any] = {
+            "mode": "hil",
+            "status": "succeeded" if succeeded else "failed",
+            "started_at": started_at,
+            "finished_at": _now(),
+            "results": results,
+        }
+        if physical_state is not None:
+            spec["physical_state"] = physical_state
+        return {
+            "apiVersion": "cognitive-agent/v1alpha1",
+            "kind": "ExecutionReport",
+            "metadata": {
+                "id": f"report-{request_id}",
+                "name": "seat-ota MQTT hardware execution report",
+                "version": "1.0.0",
+                "request_id": request_id,
+                "labels": {
+                    "simulation": "false",
+                    "feedback": "wireless_mqtt_ch0",
+                },
+            },
+            "spec": spec,
+        }

src/cognitive_agent/application/native_can_feedback.py

@@ -2,7 +2,9 @@
 
 The ZLG SDK accepting a transmit request is not evidence that an ECU acted.
 This module contains the small, byte-exact subset of CAN_DEV feedback that the
-web console is allowed to present as physical state.
+web console is allowed to present as physical state.  CH1 signal definitions
+come from ``project-code/canfd/CAN矩阵表_filled.xlsx`` Sheet1; decoded
+summaries embedded in an MQTT envelope are never used here.
 """
 
 from __future__ import annotations
@@ -294,8 +296,43 @@ def decode_feedback(frame: CanFrame) -> dict[str, Any]:
                 "rear_brightness_level": (
                     rear_brightness_raw - 1 if 1 <= rear_brightness_raw <= 6 else None
                 ),
-                "front_color_index": front_color,
+                # Sheet1 rows 1896-1897 define 0x01-0x1F as colors and
-                "rear_color_index": rear_color,
+                # 0x20-0x7F as reserved.  Do not expose a reserved raw value
+                # as though it were a real cabin color.
+                "front_color_index": (
+                    front_color if 1 <= front_color <= 0x1F else None
+                ),
+                "rear_color_index": (
+                    rear_color if 1 <= rear_color <= 0x1F else None
+                ),
+            },
+        }
+        return decoded
+
+    if frame.arbitration_id == 0x3FF and len(data) >= 8:
+        # CAN矩阵表_filled.xlsx Sheet1 rows 169, 172 and 173.  The
+        # illuminance signal reserves 0x3FE and uses 0x3FF as its initial
+        # value, so only the explicitly valid 0x000-0x3FD range is physical.
+        illuminance_raw = _bits(data, 46, 10)
+        decoded["domain_state"] = {
+            "interior_light": {
+                "power": _state(_bits(data, 28, 2)),
+                "footwell_power": _state(_bits(data, 35, 2)),
+                "ambient_illuminance_lux": (
+                    illuminance_raw * 30 if illuminance_raw <= 0x3FD else None
+                ),
+            }
+        }
+        return decoded
+
+    if frame.arbitration_id == 0x3F3 and len(data) >= 8:
+        # CAN矩阵表_filled.xlsx Sheet1 rows 2336 and 2338.
+        decoded["domain_state"] = {
+            "interior_light": {
+                "wall_light_power": _state(_bits(data, 58, 2)),
+            },
+            "ambient_light": {
+                "power": _state(_bits(data, 62, 2), on=2, off=1),
             },
         }
         return decoded

src/cognitive_agent/application/seat_service.py

@@ -53,6 +53,9 @@ from cognitive_agent.application.model_plan_adapter import (  # noqa: E402
     SEAT_CAPABILITIES,
     SEAT_MOTION_CAPABILITIES,
 )
+from cognitive_agent.application.mqtt_ota_seat_executor import (  # noqa: E402
+    MqttOtaSeatExecutor,
+)
 from cognitive_agent.application.native_can_intent import merge_native_can_intent  # noqa: E402
 from cognitive_agent.application.native_can_relative import (  # noqa: E402
     NativeCanRelativeResolver,
@@ -76,6 +79,12 @@ from cognitive_agent.application.vehicle_profile import (  # noqa: E402
     VehicleProfile,
     VehicleProfileRegistry,
 )
+from cognitive_agent.application.vehicle_state_monitor import (  # noqa: E402
+    OBSERVABLE_IDS,
+    REQUIRED_BODY_IDS,
+    REQUIRED_SEAT_IDS,
+    VehicleStateMonitor,
+)
 from cognitive_agent.application.zcan_seat_executor import (  # noqa: E402
     ZcanBridgeSeatExecutor,
 )
@@ -89,8 +98,12 @@ from cognitive_agent.infrastructure.can.hardware import (  # noqa: E402
     PHYSICAL_BENCH_COORDINATOR,
     SeatHardwareSettings,
     VehicleCanSettings,
+    VehicleMqttSettings,
 )
 from cognitive_agent.infrastructure.can.gateway import ZlgChannelConfig  # noqa: E402
+from cognitive_agent.infrastructure.can.mqtt_transport import (  # noqa: E402
+    MqttCanTransport,
+)
 from cognitive_agent.infrastructure.can.access import (  # noqa: E402
     PHYSICAL_BENCH_ACCESS,
 )
@@ -117,6 +130,11 @@ PASSENGER_SEAT_SCOPE_PATTERN = re.compile(
     r"\bpassenger\b|\bfront[-_ ]?right\b|\bright[-_ ]?front\b|副驾|乘客|右前",
     re.IGNORECASE,
 )
+WIRED_CAN_TRANSPORT = "wired_can"
+WIRELESS_MQTT_TRANSPORT = "wireless_mqtt"
+VEHICLE_CONTROL_TRANSPORTS = frozenset(
+    {WIRED_CAN_TRANSPORT, WIRELESS_MQTT_TRANSPORT}
+)
 
 
 def _has_mixed_driver_passenger_seat_scope(utterance: str) -> bool:
@@ -209,6 +227,17 @@ class SeatDemoService:
         )
         self.hardware_settings = SeatHardwareSettings.from_env(repository_root)
         self.vehicle_can_settings = VehicleCanSettings.from_env(repository_root)
+        self.vehicle_mqtt_settings = VehicleMqttSettings.from_env()
+        self._vehicle_state_monitor = (
+            VehicleStateMonitor(self.vehicle_can_settings)
+            if self.vehicle_can_settings.backend == "zlgcan-linux"
+            and self.vehicle_can_settings.state_configured
+            and not self.vehicle_can_settings.configured
+            else None
+        )
+        self._vehicle_mqtt_transport = MqttCanTransport(
+            self.vehicle_mqtt_settings
+        )
         self.native_can_runtime = NativeCanRuntime(repository_root)
         self.native_can_relative_resolver = NativeCanRelativeResolver(repository_root)
         self.hardware_execution = PHYSICAL_BENCH_COORDINATOR
@@ -272,6 +301,22 @@ class SeatDemoService:
             and self.vehicle_can_settings.channel == 1
         )
 
+    def _driver_only_vehicle_execution_active(self, transport: str) -> bool:
+        if self.hardware_settings.enabled:
+            return False
+        if transport == WIRELESS_MQTT_TRANSPORT:
+            return self.vehicle_mqtt_settings.configured
+        return self.driver_only_ch1_execution_active
+
+    @staticmethod
+    def _validate_control_transport(transport: str) -> str:
+        normalized = str(transport).strip().lower()
+        if normalized not in VEHICLE_CONTROL_TRANSPORTS:
+            raise ValueError(
+                "control_transport must be wired_can or wireless_mqtt"
+            )
+        return normalized
+
     def runtime_info(self) -> dict[str, Any]:
         catalog = yaml.safe_load(
             (self.domain_root / "config" / "capabilities.yaml").read_text(encoding="utf-8")
@@ -283,6 +328,15 @@ class SeatDemoService:
         hardware_info = self.hardware_settings.public_info()
         hardware_info.update(self.hardware_execution.public_info())
         hardware_info.update(self.hardware_access.public_info())
+        vehicle_can_info = self.vehicle_can_settings.public_info()
+        if self._vehicle_state_monitor is not None:
+            state_sync_info = self._vehicle_state_monitor.public_info()
+            if self.hardware_settings.configured:
+                # Keep the slower legacy cadence when the same page also polls
+                # the physical passenger-seat path through the shared adapter.
+                state_sync_info["poll_interval_ms"] = 5_000
+            vehicle_can_info["state_sync"] = state_sync_info
+        vehicle_mqtt_info = self._vehicle_mqtt_transport.public_info()
         return {
             "service": "cabin-cognitive-orchestrator",
             "domain": "cabin",
@@ -294,9 +348,27 @@ class SeatDemoService:
             "hardware_execution_allowed": (
                 self.hardware_settings.configured
                 or self.vehicle_can_settings.configured
+                or self.vehicle_mqtt_settings.configured
             ),
             "hardware": hardware_info,
-            "vehicle_can": self.vehicle_can_settings.public_info(),
+            "vehicle_can": vehicle_can_info,
+            "vehicle_mqtt": vehicle_mqtt_info,
+            "vehicle_transports": {
+                "default": WIRED_CAN_TRANSPORT,
+                "selection_scope": "browser_request",
+                "options": [
+                    {
+                        "id": WIRED_CAN_TRANSPORT,
+                        "label": "有线控制",
+                        **vehicle_can_info,
+                    },
+                    {
+                        "id": WIRELESS_MQTT_TRANSPORT,
+                        "label": "无线控制",
+                        **vehicle_mqtt_info,
+                    },
+                ],
+            },
             "vehicle_safety_policy": {
                 "required_channel": 1,
                 "required_gear": "P",
@@ -322,6 +394,8 @@ class SeatDemoService:
                     and self.vehicle_can_settings.configured
                     else "ch1_body_can_driver_only"
                     if self.vehicle_can_settings.configured
+                    else "ch1_body_can_read_only"
+                    if self.vehicle_can_settings.state_configured
                     else "ch0_passenger_only"
                     if self.hardware_settings.configured
                     else "virtual_only"
@@ -407,23 +481,54 @@ class SeatDemoService:
         conversation_id: str,
         vehicle_id: str | None = None,
         *,
+        control_transport: str = WIRED_CAN_TRANSPORT,
         hardware_client_id: str | None = None,
         hardware_access_bypass: bool = True,
     ) -> dict[str, Any]:
         """Read the bench only when no physical execution currently owns it."""
 
+        control_transport = self._validate_control_transport(control_transport)
+        mqtt_selected = control_transport == WIRELESS_MQTT_TRANSPORT
         if hardware_access_bypass:
+            # Wireless CAN0 is a thread-safe view over the persistent MQTT
+            # subscription.  HardwareSeatExecutor still serializes this seat
+            # read with seat actuation through its adapter lock, while an
+            # absent CAN0 stream must not block the independent cached CAN1
+            # dashboard or make control requests fail with hardware_busy.
+            if mqtt_selected:
+                return self._synchronize_hardware_state_once(
+                    conversation_id,
+                    vehicle_id,
+                    control_transport=control_transport,
+                )
             with self.hardware_execution.reserve():
-                return self._synchronize_hardware_state_once(conversation_id, vehicle_id)
+                return self._synchronize_hardware_state_once(
+                    conversation_id,
+                    vehicle_id,
+                    control_transport=control_transport,
+                )
         authorized_client_id = self.hardware_access.ensure_authorized(hardware_client_id)
+        if mqtt_selected:
+            with self.hardware_access.use(authorized_client_id):
+                return self._synchronize_hardware_state_once(
+                    conversation_id,
+                    vehicle_id,
+                    control_transport=control_transport,
+                )
         with self.hardware_execution.reserve():
             with self.hardware_access.use(authorized_client_id):
-                return self._synchronize_hardware_state_once(conversation_id, vehicle_id)
+                return self._synchronize_hardware_state_once(
+                    conversation_id,
+                    vehicle_id,
+                    control_transport=control_transport,
+                )
 
     def _synchronize_hardware_state_once(
         self,
         conversation_id: str,
         vehicle_id: str | None = None,
+        *,
+        control_transport: str = WIRED_CAN_TRANSPORT,
     ) -> dict[str, Any]:
         """Read the bench and project it into the current passenger conversation."""
 
@@ -431,10 +536,26 @@ class SeatDemoService:
             raise ValueError(
                 "conversation_id must start with conv- and contain only lowercase letters, numbers, or hyphens"
             )
-        if not self.hardware_settings.configured:
+        control_transport = self._validate_control_transport(control_transport)
-            raise HardwareSafetyError("the T2G seat hardware runtime is not configured")
+        mqtt_selected = control_transport == WIRELESS_MQTT_TRANSPORT
+        if mqtt_selected:
+            if not self.vehicle_mqtt_settings.state_configured:
+                raise HardwareSafetyError("the MQTT CAN0 seat relay is not configured")
+            bus_factory = lambda: self._vehicle_mqtt_transport.bus(
+                channel=0,
+                replay_latest=True,
+            )
+        else:
+            if not self.hardware_settings.configured:
+                raise HardwareSafetyError("the T2G seat hardware runtime is not configured")
+            bus_factory = None
         vehicle_profile = self.vehicle_profiles.get(vehicle_id)
-        physical_state = self._new_hardware_executor().read_physical_state()
+        physical_state = self._new_hardware_executor(
+            bus_factory,
+            remote_transport=mqtt_selected,
+        ).read_physical_state()
+        if mqtt_selected:
+            physical_state["source"] = "wireless_mqtt_ch0"
         context = self.conversations.synchronize_physical_passenger(
             conversation_id,
             physical_state,
@@ -444,7 +565,8 @@ class SeatDemoService:
             "status": "succeeded",
             "conversation_id": conversation_id,
             "conversation_turn": context["turn_count"],
-            "source": "physical_can",
+            "source": "wireless_mqtt_ch0" if mqtt_selected else "physical_can",
+            "control_transport": control_transport,
             "captured_at": physical_state.get("captured_at"),
             "complete": bool(physical_state.get("complete")),
             "missing": list(physical_state.get("missing", [])),
@@ -457,38 +579,103 @@ class SeatDemoService:
         conversation_id: str,
         vehicle_id: str | None = None,
         *,
+        control_transport: str = WIRED_CAN_TRANSPORT,
         hardware_client_id: str | None = None,
         hardware_access_bypass: bool = True,
     ) -> dict[str, Any]:
         """Passively receive CH1 driver-seat feedback without transmitting CAN."""
 
+        control_transport = self._validate_control_transport(control_transport)
+        mqtt_selected = control_transport == WIRELESS_MQTT_TRANSPORT
+
         if hardware_access_bypass:
+            # The MQTT snapshot is already decoded and protected by the
+            # transport condition lock.  It is independent from physical
+            # execution ownership and should remain readable during CAN0
+            # waits or an in-flight command.
+            if mqtt_selected:
+                return self._synchronize_vehicle_state_once(
+                    conversation_id,
+                    vehicle_id,
+                    control_transport=control_transport,
+                )
             with self.hardware_execution.reserve():
-                return self._synchronize_vehicle_state_once(conversation_id, vehicle_id)
+                return self._synchronize_vehicle_state_once(
+                    conversation_id,
+                    vehicle_id,
+                    control_transport=control_transport,
+                )
         authorized_client_id = self.hardware_access.ensure_authorized(hardware_client_id)
+        if mqtt_selected:
+            with self.hardware_access.use(authorized_client_id):
+                return self._synchronize_vehicle_state_once(
+                    conversation_id,
+                    vehicle_id,
+                    control_transport=control_transport,
+                )
         with self.hardware_execution.reserve():
             with self.hardware_access.use(authorized_client_id):
-                return self._synchronize_vehicle_state_once(conversation_id, vehicle_id)
+                return self._synchronize_vehicle_state_once(
+                    conversation_id,
+                    vehicle_id,
+                    control_transport=control_transport,
+                )
+
+    def start(self) -> None:
+        if self._vehicle_state_monitor is not None:
+            self._vehicle_state_monitor.start()
+        self._vehicle_mqtt_transport.start()
+
+    def close(self) -> None:
+        if self._vehicle_state_monitor is not None:
+            self._vehicle_state_monitor.close()
+        self._vehicle_mqtt_transport.close()
 
     def _synchronize_vehicle_state_once(
         self,
         conversation_id: str,
         vehicle_id: str | None = None,
+        *,
+        control_transport: str = WIRED_CAN_TRANSPORT,
     ) -> dict[str, Any]:
         if not CONVERSATION_ID_PATTERN.fullmatch(conversation_id):
             raise ValueError(
                 "conversation_id must start with conv- and contain only lowercase letters, numbers, or hyphens"
             )
-        if not self.vehicle_can_settings.configured:
+        control_transport = self._validate_control_transport(control_transport)
+        mqtt_selected = control_transport == WIRELESS_MQTT_TRANSPORT
+        if mqtt_selected:
+            if not self.vehicle_mqtt_settings.state_configured:
+                raise HardwareSafetyError("the MQTT vehicle CAN relay is not configured")
+        elif not self.vehicle_can_settings.state_configured:
             raise HardwareSafetyError("the CH1 vehicle CAN runtime is not configured")
 
         vehicle_profile = self.vehicle_profiles.get(vehicle_id)
-        shared_runtime_enabled = os.getenv(
+        shared_runtime_enabled = (
-            "COGNITIVE_AGENT_SHARED_CAN_RUNTIME_ENABLED",
+            self.vehicle_can_settings.backend != "zlgcan-linux"
-            os.getenv("COGNITIVE_AGENT_SEAT_SHARED_ZCANPRO_BRIDGE_ENABLED", "true"),
+            and self.vehicle_can_settings.configured
-        ).strip().lower() in {"1", "true", "yes", "on"}
+            and os.getenv(
+                "COGNITIVE_AGENT_SHARED_CAN_RUNTIME_ENABLED",
+                os.getenv(
+                    "COGNITIVE_AGENT_SEAT_SHARED_ZCANPRO_BRIDGE_ENABLED", "true"
+                ),
+            ).strip().lower() in {"1", "true", "yes", "on"}
+        )
         bridge = None
-        if shared_runtime_enabled:
+        capture_sequence: int | None = None
+        if mqtt_selected:
+            snapshot = self._vehicle_mqtt_transport.snapshot()
+            feedback_states = list(snapshot.feedback_states)
+            observed_ids = set(snapshot.observed_ids)
+            captured_at = snapshot.captured_at
+            capture_sequence = snapshot.capture_sequence
+        elif self._vehicle_state_monitor is not None:
+            snapshot = self._vehicle_state_monitor.snapshot()
+            feedback_states = list(snapshot.feedback_states)
+            observed_ids = set(snapshot.observed_ids)
+            captured_at = snapshot.captured_at
+            capture_sequence = snapshot.capture_sequence
+        elif shared_runtime_enabled:
             from cognitive_agent.application.self_repair.service import BRIDGE_MANAGER
 
             if not hasattr(BRIDGE_MANAGER, "channel_bus_factory"):
@@ -500,68 +687,65 @@ class SeatDemoService:
             )()
         else:
             bridge = self.vehicle_can_settings.bridge(
-                [self.vehicle_can_settings.channel_config()]
+                [self.vehicle_can_settings.channel_config()],
+                monitor_only=True,
             )
             bus = bridge.channel_bus(self.vehicle_can_settings.channel)
 
-        feedback_states: list[dict[str, Any]] = []
+        if not mqtt_selected and self._vehicle_state_monitor is None:
-        observed_ids: set[int] = set()
+            feedback_states = []
-        # Keep driver-seat completeness compatible with the existing endpoint,
+            observed_ids = set()
-        # while passively collecting every recognized CH1 body-state frame for
+            captured_at = None
-        # the whole-vehicle dashboard during the same bounded receive window.
+            # Keep driver-seat completeness compatible with the existing endpoint,
-        required_seat_ids = {0x4FA, 0x494}
+            # while passively collecting every recognized CH1 body-state frame for
-        required_body_ids = {0x342, 0x4EB, 0x407}
+            # the whole-vehicle dashboard during the same bounded receive window.
-        observable_ids = {
+            deadline = (
-            *required_seat_ids,
+                time.monotonic()
-            *required_body_ids,
+                + self.vehicle_can_settings.feedback_timeout_ms / 1000
-            0x388,
+            )
-            0x404,
+            try:
-            0x41A,
+                while time.monotonic() < deadline and observed_ids != OBSERVABLE_IDS:
-            0x42E,
+                    remaining_ms = max(1, int((deadline - time.monotonic()) * 1000))
-        }
+                    frame = bus.receive(remaining_ms, include_fd=True)
-        deadline = time.monotonic() + self.vehicle_can_settings.feedback_timeout_ms / 1000
+                    if frame is None:
-        try:
+                        break
-            while time.monotonic() < deadline and observed_ids != observable_ids:
+                    if frame.channel != self.vehicle_can_settings.channel:
-                remaining_ms = max(1, int((deadline - time.monotonic()) * 1000))
+                        continue
-                frame = bus.receive(remaining_ms, include_fd=True)
+                    if frame.arbitration_id not in OBSERVABLE_IDS or len(frame.data) < 8:
-                if frame is None:
+                        continue
-                    break
+                    decoded = decode_feedback(frame)
-                if frame.channel != self.vehicle_can_settings.channel:
+                    if not any(
-                    continue
+                        key in decoded
-                if frame.arbitration_id not in observable_ids or len(frame.data) < 8:
+                        for key in ("actuator_state", "domain_state", "vehicle_safety")
-                    continue
+                    ):
-                decoded = decode_feedback(frame)
+                        # 0x4EB is multiplexed. Only subtype 0x07 carries the
-                if not any(
+                        # verified speed signal, so unrelated subframes must not
-                    key in decoded
+                        # make the body-state snapshot look complete.
-                    for key in ("actuator_state", "domain_state", "vehicle_safety")
+                        continue
-                ):
+                    frame_id = str(decoded.get("frame_id", ""))
-                    # 0x4EB is multiplexed. Only subtype 0x07 carries the
+                    decoded.update(
-                    # verified speed signal, so unrelated subframes must not
+                        {
-                    # make the body-state snapshot look complete.
+                            "valid": True,
-                    continue
+                            "feedback_frame_id": frame_id,
-                frame_id = str(decoded.get("frame_id", ""))
+                            "captured_at": _now(),
-                decoded.update(
+                            "verification": {
-                    {
+                                "authoritative": True,
-                        "valid": True,
+                                "channel": 1,
-                        "feedback_frame_id": frame_id,
+                                "simulated": False,
-                        "captured_at": _now(),
+                                "read_only": True,
-                        "verification": {
+                                "frame_id": frame_id,
-                            "authoritative": True,
+                                "payload_size": len(frame.data),
-                            "channel": 1,
+                            },
-                            "simulated": False,
+                        }
-                            "read_only": True,
+                    )
-                            "frame_id": frame_id,
+                    feedback_states.append(decoded)
-                            "payload_size": len(frame.data),
+                    observed_ids.add(frame.arbitration_id)
-                        },
+                    captured_at = str(decoded["captured_at"])
-                    }
+            finally:
-                )
+                if bridge is not None:
-                feedback_states.append(decoded)
+                    bridge.close()
-                observed_ids.add(frame.arbitration_id)
+                else:
-        finally:
+                    bus.close()
-            if bridge is not None:
-                bridge.close()
-            else:
-                bus.close()
 
         context = self.conversations.synchronize_physical_ch1_feedback(
             conversation_id,
@@ -570,19 +754,23 @@ class SeatDemoService:
         context = self._context_for_vehicle(context, vehicle_profile)
         missing = [
             f"0x{frame_id:03X}"
-            for frame_id in sorted(required_seat_ids - observed_ids)
+            for frame_id in sorted(REQUIRED_SEAT_IDS - observed_ids)
         ]
         body_state_missing = [
             f"0x{frame_id:03X}"
-            for frame_id in sorted(required_body_ids - observed_ids)
+            for frame_id in sorted(REQUIRED_BODY_IDS - observed_ids)
         ]
         return {
             "status": "succeeded",
             "conversation_id": conversation_id,
             "conversation_turn": context["turn_count"],
-            "source": "physical_can_ch1",
+            "source": (
+                "wireless_mqtt_ch1" if mqtt_selected else "physical_can_ch1"
+            ),
+            "control_transport": control_transport,
             "read_only": True,
-            "captured_at": feedback_states[-1].get("captured_at") if feedback_states else _now(),
+            "captured_at": captured_at or _now(),
+            "capture_sequence": capture_sequence,
             "complete": not missing,
             "missing": missing,
             "body_state_complete": not body_state_missing,
@@ -593,8 +781,11 @@ class SeatDemoService:
         }
 
     def _new_hardware_executor(
-        self, bus_factory: Any | None = None
+        self,
-    ) -> HardwareSeatExecutor:
+        bus_factory: Any | None = None,
+        *,
+        remote_transport: bool = False,
+    ) -> HardwareSeatExecutor | MqttOtaSeatExecutor | ZcanBridgeSeatExecutor:
         shared_bridge_enabled = os.getenv(
             "COGNITIVE_AGENT_SHARED_CAN_RUNTIME_ENABLED",
             os.getenv("COGNITIVE_AGENT_SEAT_SHARED_ZCANPRO_BRIDGE_ENABLED", "true"),
@@ -624,7 +815,7 @@ class SeatDemoService:
                     auto_home=self.hardware_settings.auto_home_enabled,
                 )
         resolved_bus_factory = bus_factory or self.hardware_settings.bus_factory()
-        return HardwareSeatExecutor(
+        executor = HardwareSeatExecutor(
             self.hardware_matrix,
             resolved_bus_factory,
             thermal_timeout_ms=self.hardware_settings.thermal_timeout_ms,
@@ -644,12 +835,19 @@ class SeatDemoService:
             ),
             auto_home=self.hardware_settings.auto_home_enabled,
             home_timeout_s=self.hardware_settings.home_timeout_s,
-            firmware_guard=self.hardware_settings.firmware_guard(resolved_bus_factory),
+            firmware_guard=self.hardware_settings.firmware_guard(
+                resolved_bus_factory,
+                allow_programming=not remote_transport,
+            ),
             synchronize_position_before_first_motion=(
                 self.hardware_settings.position_sync_enabled
             ),
             position_sync_state=self._seat_position_memory_state,
+            require_thermal_feedback=not remote_transport,
         )
+        if remote_transport:
+            return MqttOtaSeatExecutor(executor, resolved_bus_factory)
+        return executor
 
     def process(
         self,
@@ -664,7 +862,9 @@ class SeatDemoService:
         hardware_client_id: str | None = None,
         hardware_access_bypass: bool = True,
         reasoning_effort: str | None = None,
+        control_transport: str = WIRED_CAN_TRANSPORT,
     ) -> dict[str, Any]:
+        control_transport = self._validate_control_transport(control_transport)
         # Creating a reusable scene is a configuration workflow.  Synthesize
         # and validate it in dry-run even when the console currently targets
         # the real bench, otherwise virtual domains such as climate or ambient
@@ -681,8 +881,11 @@ class SeatDemoService:
                 vehicle_id,
                 simulation_fault,
                 reasoning_effort,
+                control_transport,
             )
-        if hardware_access_bypass or self.driver_only_ch1_execution_active:
+        if hardware_access_bypass or self._driver_only_vehicle_execution_active(
+            control_transport
+        ):
             with self.hardware_execution.reserve():
                 return self._process_once(
                     utterance,
@@ -693,6 +896,7 @@ class SeatDemoService:
                     vehicle_id,
                     simulation_fault,
                     reasoning_effort,
+                    control_transport,
                 )
         authorized_client_id = self.hardware_access.ensure_authorized(hardware_client_id)
         with self.hardware_execution.reserve():
@@ -706,6 +910,7 @@ class SeatDemoService:
                     vehicle_id,
                     simulation_fault,
                     reasoning_effort,
+                    control_transport,
                 )
 
     def _process_once(
@@ -718,7 +923,9 @@ class SeatDemoService:
         vehicle_id: str | None = None,
         simulation_fault: str = "normal",
         reasoning_effort: str | None = None,
+        control_transport: str = WIRED_CAN_TRANSPORT,
     ) -> dict[str, Any]:
+        control_transport = self._validate_control_transport(control_transport)
         utterance = utterance.strip()
         if not utterance:
             raise ValueError("utterance must not be empty")
@@ -776,6 +983,7 @@ class SeatDemoService:
                 vehicle_profile,
                 simulation_fault,
                 mode_create_name,
+                control_transport,
             )
 
         request_id = f"req-{datetime.now(UTC).strftime('%Y%m%d%H%M%S')}-{uuid.uuid4().hex[:6]}"
@@ -798,6 +1006,7 @@ class SeatDemoService:
             "reasoning_effort_requested": effective_reasoning_effort,
             "reasoning_effort_used": None,
             "execution_mode": execution_mode,
+            "control_transport": control_transport,
             "hardware_execution_allowed": (
                 hardware_request and not control_plane_request
             ),
@@ -899,7 +1108,14 @@ class SeatDemoService:
         parsed = apply_language_safety_guards(parsed, utterance)
         parsed = self._partition_native_actions(
             parsed,
-            promote_supported=(hardware_request and self.vehicle_can_settings.enabled),
+            promote_supported=(
+                hardware_request
+                and (
+                    self.vehicle_mqtt_settings.enabled
+                    if control_transport == WIRELESS_MQTT_TRANSPORT
+                    else self.vehicle_can_settings.enabled
+                )
+            ),
         )
         if hardware_request and not control_plane_request:
             if parsed.get("domain_actions"):
@@ -914,28 +1130,40 @@ class SeatDemoService:
                     + ", ".join(unsupported)
                 )
             if parsed.get("actions"):
-                self.hardware_settings.authorize(approval_token)
+                (
+                    self.vehicle_mqtt_settings
+                    if control_transport == WIRELESS_MQTT_TRANSPORT
+                    else self.hardware_settings
+                ).authorize(approval_token)
             if parsed.get("native_can_actions"):
-                self.vehicle_can_settings.authorize(approval_token)
+                (
+                    self.vehicle_mqtt_settings
+                    if control_transport == WIRELESS_MQTT_TRANSPORT
+                    else self.vehicle_can_settings
+                ).authorize(approval_token)
             if not parsed.get("actions") and not parsed.get("native_can_actions"):
                 raise HardwareSafetyError(
                     "hardware mode requires at least one verified seat or vehicle CAN operation"
                 )
             if parsed.get("actions") and parsed.get("native_can_actions"):
-                if self.hardware_settings.backend != "zlgcan":
+                if (
+                    control_transport == WIRED_CAN_TRANSPORT
+                    and self.hardware_settings.backend != "zlgcan"
+                ):
                     raise HardwareSafetyError(
                         "linked seat/vehicle execution requires the shared zlgcan backend"
                     )
-                try:
+                if control_transport == WIRED_CAN_TRANSPORT:
-                    seat_channel = int(self.hardware_settings.channel, 0)
+                    try:
-                except ValueError as exc:
+                        seat_channel = int(self.hardware_settings.channel, 0)
-                    raise HardwareSafetyError(
+                    except ValueError as exc:
-                        "ZLG seat CAN channel must be an integer"
+                        raise HardwareSafetyError(
-                    ) from exc
+                            "ZLG seat CAN channel must be an integer"
-                if seat_channel == self.vehicle_can_settings.channel:
+                        ) from exc
-                    raise HardwareSafetyError(
+                    if seat_channel == self.vehicle_can_settings.channel:
-                        "seat and vehicle CAN must use different adapter channels"
+                        raise HardwareSafetyError(
-                    )
+                            "seat and vehicle CAN must use different adapter channels"
+                        )
         self._trace(
             traces,
             request_id,
@@ -1052,6 +1280,7 @@ class SeatDemoService:
                 simulated_hardware_request=simulated_hardware_request,
                 simulation_fault=simulation_fault,
                 vehicle_profile=vehicle_profile,
+                control_transport=control_transport,
             )
 
         intent_ir = build_intent_ir(
@@ -1366,10 +1595,41 @@ class SeatDemoService:
 
         execute_started = time.perf_counter()
         if hardware_request:
-            hardware_executor = self._new_hardware_executor()
+            mqtt_selected = control_transport == WIRELESS_MQTT_TRANSPORT
+            vehicle_safety_preflight = None
+            if mqtt_selected:
+                try:
+                    vehicle_safety_preflight = observe_vehicle_safety(
+                        self._vehicle_mqtt_transport.bus(channel=1),
+                        timeout_ms=min(
+                            5_000,
+                            max(1_000, self.vehicle_mqtt_settings.feedback_timeout_ms),
+                        ),
+                        required_channel=1,
+                    )
+                    require_stationary_vehicle(vehicle_safety_preflight)
+                except VehicleSafetyPreflightError as exc:
+                    raise HardwareSafetyError(
+                        "CAN1 vehicle safety preflight refused wireless passenger-seat execution: "
+                        f"{exc}"
+                    ) from exc
+                hardware_executor = self._new_hardware_executor(
+                    lambda: self._vehicle_mqtt_transport.bus(channel=0),
+                    remote_transport=True,
+                )
+            else:
+                hardware_executor = self._new_hardware_executor()
             execution_report = hardware_executor.execute(
                 command_plan, function_config, context["devices"]
             )
+            if vehicle_safety_preflight is not None:
+                execution_report["spec"]["vehicle_safety_preflight"] = (
+                    vehicle_safety_preflight
+                )
+                for item in execution_report["spec"].get("results", []):
+                    item.setdefault("telemetry", {})[
+                        "vehicle_safety_preflight"
+                    ] = vehicle_safety_preflight
         elif simulated_hardware_request:
             execution_report = self.simulated_hardware_executor.execute(
                 command_plan,
@@ -2481,6 +2741,7 @@ class SeatDemoService:
         vehicle_profile: VehicleProfile,
         simulation_fault: str,
         mode_name: str,
+        control_transport: str,
     ) -> dict[str, Any]:
         """Build, verify, and persist a new named mode in one user turn.
 
@@ -2502,6 +2763,7 @@ class SeatDemoService:
             approval_token,
             vehicle_profile.id,
             simulation_fault,
+            control_transport=control_transport,
         )
         if source_result.get("status") not in {"succeeded", "partially_succeeded"}:
             source_result["decision_summary"] = [
@@ -2519,6 +2781,7 @@ class SeatDemoService:
             None,
             vehicle_profile.id,
             "normal",
+            control_transport=control_transport,
         )
         if saved_result.get("status") != "succeeded" or not saved_result.get(
             "mode_profile"
@@ -2887,6 +3150,7 @@ class SeatDemoService:
         simulated_hardware_request: bool = False,
         simulation_fault: str = "normal",
         vehicle_profile: VehicleProfile | None = None,
+        control_transport: str = WIRED_CAN_TRANSPORT,
     ) -> dict[str, Any]:
         """Run isolated adapters under the selected physical-bus policy."""
         vehicle_profile = vehicle_profile or self.vehicle_profiles.default()
@@ -3194,6 +3458,7 @@ class SeatDemoService:
             hardware_request=hardware_request,
             simulated_hardware_request=simulated_hardware_request,
             simulation_fault=simulation_fault,
+            control_transport=control_transport,
         )
         report_results = [
             item
@@ -3470,21 +3735,33 @@ class SeatDemoService:
         hardware_request: bool,
         simulated_hardware_request: bool,
         simulation_fault: str,
+        control_transport: str = WIRED_CAN_TRANSPORT,
     ) -> dict[str, dict[str, Any]]:
         reports: dict[str, dict[str, Any]] = {}
         bridge = None
         seat_bus_factory = None
         native_bus_factory = None
         vehicle_safety_preflight: dict[str, Any] | None = None
+        mqtt_selected = control_transport == WIRELESS_MQTT_TRANSPORT
 
-        if hardware_request and native_config_keys:
+        if hardware_request and (
-            shared_runtime_enabled = os.getenv(
+            native_config_keys or (mqtt_selected and "seat" in configs)
-                "COGNITIVE_AGENT_SHARED_CAN_RUNTIME_ENABLED",
+        ):
-                os.getenv(
+            shared_runtime_enabled = (
-                    "COGNITIVE_AGENT_SEAT_SHARED_ZCANPRO_BRIDGE_ENABLED", "true"
+                not mqtt_selected
-                ),
+                and self.vehicle_can_settings.backend != "zlgcan-linux"
-            ).strip().lower() in {"1", "true", "yes", "on"}
+                and os.getenv(
-            if shared_runtime_enabled:
+                    "COGNITIVE_AGENT_SHARED_CAN_RUNTIME_ENABLED",
+                    os.getenv(
+                        "COGNITIVE_AGENT_SEAT_SHARED_ZCANPRO_BRIDGE_ENABLED", "true"
+                    ),
+                ).strip().lower() in {"1", "true", "yes", "on"}
+            )
+            if mqtt_selected:
+                native_bus_factory = lambda: self._vehicle_mqtt_transport.bus(channel=1)
+                if "seat" in configs:
+                    seat_bus_factory = lambda: self._vehicle_mqtt_transport.bus(channel=0)
+            elif shared_runtime_enabled:
                 from cognitive_agent.application.self_repair.service import (
                     BRIDGE_MANAGER,
                 )
@@ -3531,9 +3808,14 @@ class SeatDemoService:
                     native_bus_factory(),
                     timeout_ms=min(
                         5_000,
-                        max(1_000, self.vehicle_can_settings.feedback_timeout_ms),
+                        max(
+                            1_000,
+                            self.vehicle_mqtt_settings.feedback_timeout_ms
+                            if mqtt_selected
+                            else self.vehicle_can_settings.feedback_timeout_ms,
+                        ),
                     ),
-                    required_channel=self.vehicle_can_settings.channel,
+                    required_channel=1,
                 )
                 require_stationary_vehicle(vehicle_safety_preflight)
             except VehicleSafetyPreflightError as exc:
@@ -3560,7 +3842,9 @@ class SeatDemoService:
                     executor = NativeCanExecutor(
                         native_bus_factory,
                         feedback_timeout_ms=(
-                            self.vehicle_can_settings.feedback_timeout_ms
+                            self.vehicle_mqtt_settings.feedback_timeout_ms
+                            if control_transport == WIRELESS_MQTT_TRANSPORT
+                            else self.vehicle_can_settings.feedback_timeout_ms
                         ),
                     )
                     native_reports[key] = executor.execute(
@@ -3581,7 +3865,10 @@ class SeatDemoService:
                 config = configs["seat"]
                 if hardware_request:
                     seat_executor = (
-                        self._new_hardware_executor(seat_bus_factory)
+                        self._new_hardware_executor(
+                            seat_bus_factory,
+                            remote_transport=mqtt_selected,
+                        )
                         if seat_bus_factory is not None
                         else self._new_hardware_executor()
                     )

src/cognitive_agent/application/self_repair/service.py

@@ -176,7 +176,7 @@ def _build_bridge_manager():
             termination_enabled=seat.termination_enabled,
         )
     ]
-    if vehicle.enabled:
+    if vehicle.configured and vehicle.backend == "zlgcan":
         if vehicle.channel == seat_channel:
             raise ValueError("seat CH0 and vehicle CH1 must use different channels")
         if (

src/cognitive_agent/application/vehicle_state_monitor.py

@@ -0,0 +1,244 @@
+"""Persistent read-only CH1 vehicle-state receiver for the Linux ZLG backend."""
+
+from __future__ import annotations
+
+import threading
+import time
+from collections.abc import Callable
+from copy import deepcopy
+from dataclasses import dataclass, replace
+from datetime import UTC, datetime
+from typing import Any
+
+from cognitive_agent.application.native_can_feedback import decode_feedback
+from cognitive_agent.infrastructure.can.gateway import CanFrame, CanGatewayError
+from cognitive_agent.infrastructure.can.hardware import VehicleCanSettings
+
+REQUIRED_SEAT_IDS = frozenset({0x4FA, 0x494})
+REQUIRED_BODY_IDS = frozenset({0x342, 0x4EB, 0x407})
+REQUIRED_UI_IDS = REQUIRED_SEAT_IDS | REQUIRED_BODY_IDS
+OBSERVABLE_IDS = REQUIRED_UI_IDS | frozenset(
+    {0x388, 0x3F3, 0x3FF, 0x404, 0x41A, 0x42E}
+)
+PERSISTENT_MONITOR_POLL_INTERVAL_MS = 500
+
+
+def _now() -> str:
+    return datetime.now(UTC).isoformat().replace("+00:00", "Z")
+
+
+@dataclass(frozen=True)
+class VehicleStateSnapshot:
+    feedback_states: tuple[dict[str, Any], ...]
+    observed_ids: frozenset[int]
+    captured_at: str | None
+    capture_sequence: int
+
+
+class VehicleStateMonitor:
+    """Keep one monitor-only adapter owner online and cache fresh decoded state."""
+
+    def __init__(
+        self,
+        settings: VehicleCanSettings,
+        *,
+        decoder: Callable[[CanFrame], dict[str, Any]] = decode_feedback,
+        reconnect_delay_s: float = 1.0,
+    ) -> None:
+        self.settings = settings
+        self.decoder = decoder
+        self.reconnect_delay_s = max(0.01, float(reconnect_delay_s))
+        self.initial_snapshot_timeout_s = max(0, settings.feedback_timeout_ms) / 1000
+        self.freshness_s = max(3.0, self.initial_snapshot_timeout_s * 2)
+
+        self._condition = threading.Condition(threading.RLock())
+        self._stop_event = threading.Event()
+        self._thread: threading.Thread | None = None
+        self._bridge: Any | None = None
+        self._latest: dict[int, tuple[float, dict[str, Any]]] = {}
+        self._baseline_ready = False
+        self._capture_sequence = 0
+        self._state = "idle"
+        self._last_error: str | None = None
+
+    def start(self) -> None:
+        with self._condition:
+            if self._thread is not None and self._thread.is_alive():
+                return
+            self._stop_event.clear()
+            self._state = "connecting"
+            self._thread = threading.Thread(
+                target=self._run,
+                name="zlg-linux-vehicle-state-monitor",
+                daemon=True,
+            )
+            self._thread.start()
+
+    def close(self) -> None:
+        self._stop_event.set()
+        with self._condition:
+            self._condition.notify_all()
+            thread = self._thread
+        if thread is not None and thread is not threading.current_thread():
+            thread.join(timeout=2.0)
+        with self._condition:
+            bridge = self._bridge
+        if thread is not None and thread.is_alive() and bridge is not None:
+            bridge.close()
+            thread.join(timeout=1.0)
+        with self._condition:
+            if self._thread is None or not self._thread.is_alive():
+                self._state = "stopped"
+                self._thread = None
+            self._condition.notify_all()
+
+    def snapshot(self) -> VehicleStateSnapshot:
+        """Return cached fresh state, waiting only for the first required baseline."""
+
+        self.start()
+        deadline = time.monotonic() + self.initial_snapshot_timeout_s
+        with self._condition:
+            while not self._baseline_ready:
+                fresh_ids = self._fresh_ids(time.monotonic())
+                if REQUIRED_UI_IDS <= fresh_ids:
+                    self._baseline_ready = True
+                    break
+                if self._state == "error" and not fresh_ids:
+                    raise CanGatewayError(
+                        self._last_error or "Linux vehicle-state monitor is unavailable"
+                    )
+                remaining_s = deadline - time.monotonic()
+                if remaining_s <= 0 or self._stop_event.is_set():
+                    break
+                self._condition.wait(timeout=remaining_s)
+
+            now = time.monotonic()
+            observed_ids = self._fresh_ids(now)
+            if self._state == "error" and not observed_ids:
+                raise CanGatewayError(
+                    self._last_error or "Linux vehicle-state monitor is unavailable"
+                )
+            feedback_states = tuple(
+                deepcopy(self._latest[frame_id][1])
+                for frame_id in sorted(observed_ids)
+            )
+            captured_at = max(
+                (
+                    str(state.get("captured_at"))
+                    for state in feedback_states
+                    if state.get("captured_at")
+                ),
+                default=None,
+            )
+            return VehicleStateSnapshot(
+                feedback_states=feedback_states,
+                observed_ids=frozenset(observed_ids),
+                captured_at=captured_at,
+                capture_sequence=self._capture_sequence,
+            )
+
+    def public_info(self) -> dict[str, Any]:
+        with self._condition:
+            return {
+                "mode": "persistent_monitor",
+                "state": self._state,
+                "read_only": True,
+                "poll_interval_ms": PERSISTENT_MONITOR_POLL_INTERVAL_MS,
+                "snapshot_freshness_ms": round(self.freshness_s * 1000),
+                "capture_sequence": self._capture_sequence,
+                "observed_frame_ids": [
+                    f"0x{frame_id:03X}"
+                    for frame_id in sorted(self._fresh_ids(time.monotonic()))
+                ],
+                "last_error": self._last_error,
+            }
+
+    def _fresh_ids(self, now: float) -> set[int]:
+        return {
+            frame_id
+            for frame_id, (captured_monotonic, _) in self._latest.items()
+            if now - captured_monotonic <= self.freshness_s
+        }
+
+    def _record(self, frame: CanFrame) -> None:
+        if (
+            frame.channel != self.settings.channel
+            or frame.arbitration_id not in OBSERVABLE_IDS
+            or len(frame.data) < 8
+        ):
+            return
+        decoded = self.decoder(frame)
+        if not any(
+            key in decoded
+            for key in ("actuator_state", "domain_state", "vehicle_safety")
+        ):
+            # 0x4EB is multiplexed; only subtype 0x07 contains verified speed.
+            return
+        frame_id = str(decoded.get("frame_id", ""))
+        decoded.update(
+            {
+                "valid": True,
+                "feedback_frame_id": frame_id,
+                "captured_at": _now(),
+                "verification": {
+                    "authoritative": True,
+                    "channel": 1,
+                    "simulated": False,
+                    "read_only": True,
+                    "frame_id": frame_id,
+                    "payload_size": len(frame.data),
+                },
+            }
+        )
+        with self._condition:
+            self._capture_sequence += 1
+            self._latest[frame.arbitration_id] = (time.monotonic(), decoded)
+            if REQUIRED_UI_IDS <= self._fresh_ids(time.monotonic()):
+                self._baseline_ready = True
+            self._condition.notify_all()
+
+    def _run(self) -> None:
+        while not self._stop_event.is_set():
+            bridge = None
+            try:
+                with self._condition:
+                    self._state = "connecting"
+                    self._condition.notify_all()
+                channel_config = replace(
+                    self.settings.channel_config(),
+                    receive_ids=tuple(sorted(OBSERVABLE_IDS)),
+                )
+                bridge = self.settings.bridge(
+                    [channel_config],
+                    monitor_only=True,
+                )
+                bus = bridge.channel_bus(self.settings.channel)
+                with self._condition:
+                    self._bridge = bridge
+                    self._latest.clear()
+                    self._baseline_ready = False
+                    self._last_error = None
+                    self._state = "online"
+                    self._condition.notify_all()
+                while not self._stop_event.is_set():
+                    frame = bus.receive(100, include_fd=True)
+                    if frame is not None:
+                        self._record(frame)
+            except Exception as exc:  # noqa: BLE001 - normalize vendor/runtime failures
+                if not self._stop_event.is_set():
+                    with self._condition:
+                        self._state = "error"
+                        self._last_error = str(exc)
+                        self._condition.notify_all()
+            finally:
+                with self._condition:
+                    if self._bridge is bridge:
+                        self._bridge = None
+                if bridge is not None:
+                    bridge.close()
+            if not self._stop_event.wait(self.reconnect_delay_s):
+                continue
+
+        with self._condition:
+            self._state = "stopped"
+            self._condition.notify_all()

src/cognitive_agent/infrastructure/can/gateway.py

@@ -129,13 +129,26 @@ class ZlgChannelConfig:
     data_bitrate: int = 2_000_000
     can_fd_iso: bool = True
     termination_enabled: bool = True
+    receive_ids: tuple[int, ...] | None = None
 
     def __post_init__(self) -> None:
         if self.frame_format not in {"classic_can", "can_fd"}:
             raise ValueError("frame_format must be classic_can or can_fd")
+        if self.receive_ids is not None:
+            if not 1 <= len(self.receive_ids) <= 64:
+                raise ValueError("receive_ids must contain between 1 and 64 identifiers")
+            if len(self.receive_ids) != len(set(self.receive_ids)):
+                raise ValueError("receive_ids must not contain duplicates")
+            if any(
+                isinstance(frame_id, bool)
+                or not isinstance(frame_id, int)
+                or not 0 <= frame_id <= 0x7FF
+                for frame_id in self.receive_ids
+            ):
+                raise ValueError("receive_ids must contain only 11-bit identifiers")
 
     def public(self) -> dict[str, Any]:
-        return {
+        value = {
             "channel": self.channel,
             "frame_format": self.frame_format,
             "arbitration_bitrate": self.arbitration_bitrate,
@@ -143,6 +156,9 @@ class ZlgChannelConfig:
             "can_fd_iso": self.can_fd_iso,
             "termination_enabled": self.termination_enabled,
         }
+        if self.receive_ids is not None:
+            value["receive_ids"] = list(self.receive_ids)
+        return value
 
 
 class ZlgCanBridgeProcess:
@@ -157,6 +173,8 @@ class ZlgCanBridgeProcess:
         device_index: int,
         channels: list[ZlgChannelConfig],
         transmit_type: int = 0,
+        monitor_only: bool = False,
+        trace_all: bool = False,
     ):
         if not channels:
             raise CanGatewayError("at least one ZLG channel must be configured")
@@ -179,6 +197,10 @@ class ZlgCanBridgeProcess:
             "--transmit-type",
             str(transmit_type),
         ]
+        if monitor_only or trace_all:
+            command.append("--monitor-only")
+        if trace_all:
+            command.append("--trace-all")
         try:
             self._process = subprocess.Popen(  # noqa: S603 - paths are trusted server config
                 command,

src/cognitive_agent/infrastructure/can/hardware.py

@@ -4,7 +4,9 @@ from __future__ import annotations
 
 import hashlib
 import hmac
+import importlib.util
 import os
+import sys
 import threading
 import time
 from contextlib import contextmanager
@@ -114,6 +116,13 @@ def _env_int(name: str, default: int) -> int:
         raise HardwareSafetyError(f"{name} must be an integer") from exc
 
 
+def _module_available(name: str) -> bool:
+    try:
+        return importlib.util.find_spec(name) is not None
+    except ModuleNotFoundError:
+        return False
+
+
 def _profiles_from_env() -> frozenset[str]:
     raw = os.getenv(
         "COGNITIVE_AGENT_SEAT_FIRMWARE_PROFILES",
@@ -405,12 +414,19 @@ class SeatHardwareSettings:
         )
 
     def firmware_guard(
-        self, bus_factory: Callable[[], CanBus] | None = None
+        self,
+        bus_factory: Callable[[], CanBus] | None = None,
+        *,
+        allow_programming: bool = True,
     ) -> T2GFirmwareGuard:
         return T2GFirmwareGuard(
             bus_factory or self.bus_factory(),
-            self._programmer() if self.auto_flash_enabled else None,
+            (
-            auto_flash=self.auto_flash_enabled,
+                self._programmer()
+                if self.auto_flash_enabled and allow_programming
+                else None
+            ),
+            auto_flash=self.auto_flash_enabled and allow_programming,
             probe_timeout_ms=self.firmware_probe_timeout_ms,
             boot_wait_ms=self.firmware_boot_wait_ms,
         )
@@ -500,6 +516,52 @@ class VehicleCanSettings:
 
     @classmethod
     def from_env(cls, repository_root: Path) -> "VehicleCanSettings":
+        backend = os.getenv(
+            "COGNITIVE_AGENT_VEHICLE_CAN_BACKEND", "zlgcan"
+        ).strip().lower()
+        linux_vci = backend == "zlgcan-linux"
+        default_linux_library = (
+            repository_root.parent / "project-code" / "canfd" / "libusbcanfd.so"
+        )
+        if linux_vci:
+            zlg_python = Path(
+                os.getenv("COGNITIVE_AGENT_ZLGCAN_PYTHON", sys.executable)
+            )
+            zlg_library = Path(
+                os.getenv(
+                    "COGNITIVE_AGENT_ZLGCAN_LINUX_LIBRARY",
+                    str(default_linux_library),
+                )
+            )
+            bridge_script = (
+                repository_root
+                / "src"
+                / "cognitive_agent"
+                / "infrastructure"
+                / "can"
+                / "zlgcan_linux_bridge.py"
+            )
+        else:
+            zlg_python = Path(
+                os.getenv(
+                    "COGNITIVE_AGENT_ZLGCAN_PYTHON",
+                    r"C:\Program Files (x86)\ZCANPRO\python38\python.exe",
+                )
+            )
+            zlg_library = Path(
+                os.getenv(
+                    "COGNITIVE_AGENT_ZLGCAN_DLL",
+                    r"C:\Program Files (x86)\ZCANPRO\zlgcan.dll",
+                )
+            )
+            bridge_script = (
+                repository_root
+                / "src"
+                / "cognitive_agent"
+                / "infrastructure"
+                / "can"
+                / "zlgcan_bridge.py"
+            )
         return cls(
             repository_root=repository_root,
             enabled=_env_bool(
@@ -514,9 +576,7 @@ class VehicleCanSettings:
                 "COGNITIVE_AGENT_HARDWARE_APPROVAL_TOKEN_REQUIRED", default=True
             ),
             approval_token=os.getenv("COGNITIVE_AGENT_HARDWARE_APPROVAL_TOKEN", ""),
-            backend=os.getenv(
+            backend=backend,
-                "COGNITIVE_AGENT_VEHICLE_CAN_BACKEND", "zlgcan"
-            ).strip().lower(),
             channel=_env_int("COGNITIVE_AGENT_VEHICLE_CAN_CHANNEL", 1),
             arbitration_bitrate=_env_int(
                 "COGNITIVE_AGENT_VEHICLE_CAN_ARBITRATION_BITRATE", 500_000
@@ -539,47 +599,42 @@ class VehicleCanSettings:
             feedback_timeout_ms=_env_int(
                 "COGNITIVE_AGENT_VEHICLE_CAN_FEEDBACK_TIMEOUT_MS", 1_500
             ),
-            device_type=_env_int("COGNITIVE_AGENT_ZLGCAN_DEVICE_TYPE", 41),
+            device_type=_env_int(
+                "COGNITIVE_AGENT_ZLGCAN_DEVICE_TYPE", 33 if linux_vci else 41
+            ),
             device_index=_env_int("COGNITIVE_AGENT_ZLGCAN_DEVICE_INDEX", 0),
-            zlg_python=Path(
+            zlg_python=zlg_python,
-                os.getenv(
+            zlg_dll=zlg_library,
-                    "COGNITIVE_AGENT_ZLGCAN_PYTHON",
+            bridge_script=bridge_script,
-                    r"C:\Program Files (x86)\ZCANPRO\python38\python.exe",
-                )
-            ),
-            zlg_dll=Path(
-                os.getenv(
-                    "COGNITIVE_AGENT_ZLGCAN_DLL",
-                    r"C:\Program Files (x86)\ZCANPRO\zlgcan.dll",
-                )
-            ),
-            bridge_script=repository_root
-            / "src"
-            / "cognitive_agent"
-            / "infrastructure"
-            / "can"
-            / "zlgcan_bridge.py",
         )
 
     @property
     def adapter_configured(self) -> bool:
         return bool(
-            self.backend == "zlgcan"
+            self.backend in {"zlgcan", "zlgcan-linux"}
             and self.zlg_python.is_file()
             and self.zlg_dll.is_file()
             and self.bridge_script.is_file()
         )
 
     @property
-    def configured(self) -> bool:
+    def state_configured(self) -> bool:
+        """Whether authoritative read-only CH1 synchronization can run."""
+
         return bool(
             self.enabled
-            and (not self.approval_required or self.approval_token)
             and self.adapter_configured
             and self.timing_is_verified
             and self.channel_is_allowed
         )
 
+    @property
+    def configured(self) -> bool:
+        return bool(
+            self.state_configured
+            and (not self.approval_required or self.approval_token)
+        )
+
     @property
     def required_channel(self) -> int:
         """Physical body-CAN channel selected by the fail-closed bench policy."""
@@ -617,9 +672,9 @@ class VehicleCanSettings:
                 supplied_token, self.approval_token
             ):
                 raise HardwareSafetyError("hardware approval token is invalid")
-        if self.backend != "zlgcan":
+        if self.backend not in {"zlgcan", "zlgcan-linux"}:
             raise HardwareSafetyError(
-                "vehicle CAN FD currently requires the zlgcan multi-channel backend"
+                "vehicle CAN FD requires the zlgcan or zlgcan-linux backend"
             )
         if not self.channel_is_allowed:
             raise HardwareSafetyError(
@@ -648,7 +703,13 @@ class VehicleCanSettings:
             termination_enabled=self.termination_enabled,
         )
 
-    def bridge(self, channels: list[ZlgChannelConfig]) -> ZlgCanBridgeProcess:
+    def bridge(
+        self,
+        channels: list[ZlgChannelConfig],
+        *,
+        monitor_only: bool = False,
+        trace_all: bool = False,
+    ) -> ZlgCanBridgeProcess:
         return ZlgCanBridgeProcess(
             python_executable=self.zlg_python,
             bridge_script=self.bridge_script,
@@ -656,12 +717,15 @@ class VehicleCanSettings:
             device_type=self.device_type,
             device_index=self.device_index,
             channels=channels,
+            monitor_only=monitor_only,
+            trace_all=trace_all,
         )
 
     def public_info(self) -> dict[str, Any]:
         return {
             "enabled": self.enabled,
             "configured": self.configured,
+            "state_configured": self.state_configured,
             "backend": self.backend,
             "platform": "t2g_cabin_bench",
             "channel": self.channel,
@@ -699,3 +763,125 @@ class VehicleCanSettings:
             "source_branch": "project-code/CAN_DEV",
             "source_commit": "6e7ed04a468dfcde7efda9e30bc15144bf02faf9",
         }
+
+
+@dataclass(frozen=True)
+class VehicleMqttSettings:
+    """Wireless CAN0/CAN1 relay settings with the same physical approval gate."""
+
+    enabled: bool
+    approval_required: bool
+    approval_token: str
+    host: str
+    port: int
+    condition_topic: str
+    control_topic: str
+    qos: int
+    keepalive_s: int
+    username: str | None
+    password: str | None
+    tls_enabled: bool
+    feedback_timeout_ms: int
+
+    @classmethod
+    def from_env(cls) -> "VehicleMqttSettings":
+        username = os.getenv("COGNITIVE_AGENT_VEHICLE_MQTT_USERNAME")
+        return cls(
+            enabled=_env_bool("COGNITIVE_AGENT_VEHICLE_MQTT_ENABLED", default=True),
+            approval_required=_env_bool(
+                "COGNITIVE_AGENT_HARDWARE_APPROVAL_TOKEN_REQUIRED", default=True
+            ),
+            approval_token=os.getenv("COGNITIVE_AGENT_HARDWARE_APPROVAL_TOKEN", ""),
+            host=os.getenv("COGNITIVE_AGENT_VEHICLE_MQTT_HOST", "127.0.0.1").strip(),
+            port=_env_int("COGNITIVE_AGENT_VEHICLE_MQTT_PORT", 1883),
+            condition_topic=os.getenv(
+                "COGNITIVE_AGENT_VEHICLE_MQTT_CONDITION_TOPIC",
+                "n7/n7-headunit/can/state",
+            ).strip(),
+            control_topic=os.getenv(
+                "COGNITIVE_AGENT_VEHICLE_MQTT_CONTROL_TOPIC",
+                "n7/can_control",
+            ).strip(),
+            qos=_env_int("COGNITIVE_AGENT_VEHICLE_MQTT_QOS", 1),
+            keepalive_s=_env_int("COGNITIVE_AGENT_VEHICLE_MQTT_KEEPALIVE_S", 30),
+            username=username.strip() if username and username.strip() else None,
+            password=os.getenv("COGNITIVE_AGENT_VEHICLE_MQTT_PASSWORD"),
+            tls_enabled=_env_bool("COGNITIVE_AGENT_VEHICLE_MQTT_TLS"),
+            feedback_timeout_ms=_env_int(
+                "COGNITIVE_AGENT_VEHICLE_MQTT_FEEDBACK_TIMEOUT_MS", 1_500
+            ),
+        )
+
+    @property
+    def adapter_configured(self) -> bool:
+        return bool(
+            self.host
+            and 1 <= self.port <= 65_535
+            and self.condition_topic
+            and self.control_topic
+            and self.condition_topic != self.control_topic
+            and self.qos in {0, 1, 2}
+            and 5 <= self.keepalive_s <= 3_600
+            and 100 <= self.feedback_timeout_ms <= 10_000
+            and _module_available("paho.mqtt.client")
+        )
+
+    @property
+    def state_configured(self) -> bool:
+        return self.enabled and self.adapter_configured
+
+    @property
+    def configured(self) -> bool:
+        return bool(
+            self.state_configured
+            and (not self.approval_required or self.approval_token)
+        )
+
+    def authorize(self, supplied_token: str | None) -> None:
+        if not self.enabled:
+            raise HardwareSafetyError(
+                "vehicle MQTT execution is disabled; set "
+                "COGNITIVE_AGENT_VEHICLE_MQTT_ENABLED=true"
+            )
+        if self.approval_required:
+            if not self.approval_token:
+                raise HardwareSafetyError(
+                    "COGNITIVE_AGENT_HARDWARE_APPROVAL_TOKEN is not configured"
+                )
+            if not supplied_token or not hmac.compare_digest(
+                supplied_token, self.approval_token
+            ):
+                raise HardwareSafetyError("hardware approval token is invalid")
+        if not self.adapter_configured:
+            raise HardwareSafetyError("the configured MQTT CAN relay is not ready")
+
+    def public_info(self) -> dict[str, Any]:
+        return {
+            "enabled": self.enabled,
+            "configured": self.configured,
+            "state_configured": self.state_configured,
+            "backend": "mqtt",
+            "host": self.host,
+            "port": self.port,
+            "condition_topic": self.condition_topic,
+            "control_topic": self.control_topic,
+            "qos": self.qos,
+            "tls_enabled": self.tls_enabled,
+            "authentication_configured": bool(self.username),
+            "channels": {"seat": 0, "vehicle": 1},
+            "target_policy": "dual_channel_mqtt_can0_passenger_can1_vehicle",
+            "frame_contract": "n7.can.frame.v1",
+            "can0_seat_protocol": "seat-ota-runtime",
+            "can0_state_contract": "0x6A0-SEAT_INFO-plus-0x6A2-to-0x302",
+            "can0_control_id": "0x6A0",
+            "can0_control_opcodes": ["0x63", "0x64", "0x65", "0x66"],
+            "can0_forbidden_workflows": [
+                "flash",
+                "bootloader_entry",
+                "test",
+                "calibration",
+                "homing",
+            ],
+            "approval_required": self.approval_required,
+            "approval_configured": bool(self.approval_token),
+        }

src/cognitive_agent/infrastructure/can/mqtt_transport.py

@@ -0,0 +1,836 @@
+"""MQTT transport for relaying validated raw CAN0/CAN1 frames.
+
+The MQTT topics carry CAN frames, never decoded vehicle-state patches.  Every
+incoming frame is therefore subjected to the same allow-list and byte decoder
+as a frame received from the wired ZLG adapter.
+
+CAN0 is the classic-CAN passenger-seat protocol defined by
+``/home/orin/project511/seat-code-file/seat-ota`` and remains raw for the seat
+domain decoder.  CAN1 is the rest-of-vehicle protocol defined by
+``/home/orin/project511/project-code/canfd/CAN矩阵表_filled.xlsx`` and is
+decoded by :mod:`cognitive_agent.application.native_can_feedback`.
+"""
+
+from __future__ import annotations
+
+import json
+import math
+import threading
+import time
+import uuid
+from collections import deque
+from collections.abc import Callable
+from copy import deepcopy
+from datetime import UTC, datetime
+from typing import Any
+
+from cognitive_agent.application.native_can_feedback import decode_feedback
+from cognitive_agent.application.vehicle_state_monitor import (
+    OBSERVABLE_IDS,
+    REQUIRED_UI_IDS,
+    VehicleStateSnapshot,
+)
+from cognitive_agent.infrastructure.can.gateway import (
+    CanFrame,
+    CanGatewayError,
+)
+from cognitive_agent.infrastructure.can.hardware import VehicleMqttSettings
+
+MQTT_CAN_SCHEMA = "n7.can.frame.v1"
+MQTT_POLL_INTERVAL_MS = 500
+MQTT_SAFETY_FEEDBACK_IDS = frozenset({0x342, 0x4EB})
+MQTT_VEHICLE_FEEDBACK_IDS = OBSERVABLE_IDS | frozenset({0x2F5, 0x37B})
+MQTT_SEAT_FEEDBACK_IDS = frozenset({*range(0x301, 0x308), 0x4FA, 0x6A2})
+MQTT_ACCEPTED_FEEDBACK_IDS = {
+    0: MQTT_SEAT_FEEDBACK_IDS,
+    1: MQTT_VEHICLE_FEEDBACK_IDS,
+}
+MQTT_APPROVED_CONTROL_IDS = {
+    0: frozenset({0x6A0}),
+    1: frozenset({0x1DE, 0x3FC, 0x431, 0x4C1, 0x4EF, 0x4F5}),
+}
+MQTT_OTA_SEAT_RUNTIME_OPCODES = frozenset({0x63, 0x64, 0x65, 0x66})
+_ID_KEYS = ("arbitration_id", "can_id", "canId", "frame_id", "frameId", "id")
+_DATA_KEYS = ("data_hex", "dataHex", "data", "payload", "bytes")
+
+
+def _now() -> str:
+    return datetime.now(UTC).isoformat().replace("+00:00", "Z")
+
+
+def _parse_frame_id(value: Any) -> int:
+    if isinstance(value, bool):
+        raise ValueError("CAN frame ID must not be boolean")  # noqa: TRY004
+    if isinstance(value, int):
+        frame_id = value
+    elif isinstance(value, str):
+        raw = value.strip()
+        if not raw:
+            raise ValueError("CAN frame ID is empty")
+        if raw.lower().startswith("0x") or any(character in "abcdefABCDEF" for character in raw):
+            frame_id = int(raw, 16)
+        else:
+            frame_id = int(raw, 10)
+    else:
+        raise ValueError("CAN frame ID must be an integer or string")  # noqa: TRY004
+    if not 0 <= frame_id <= 0x7FF:
+        raise ValueError("only 11-bit CAN frame IDs are accepted")
+    return frame_id
+
+
+def _parse_data(value: Any) -> bytes:
+    if isinstance(value, list):
+        if not value or len(value) > 64:
+            raise ValueError("CAN data must contain between 1 and 64 bytes")
+        if any(
+            isinstance(item, bool) or not isinstance(item, int) or not 0 <= item <= 255
+            for item in value
+        ):
+            raise ValueError("CAN data array must contain only byte integers")
+        return bytes(value)
+    if not isinstance(value, str):
+        raise ValueError("CAN data must be a hex string or byte array")  # noqa: TRY004
+    compact = value.strip().replace("0x", "").replace("0X", "")
+    for separator in (" ", ":", "-", ",", "_"):
+        compact = compact.replace(separator, "")
+    if not compact or len(compact) % 2 or len(compact) > 128:
+        raise ValueError("CAN data hex must encode between 1 and 64 bytes")
+    try:
+        return bytes.fromhex(compact)
+    except ValueError as exc:
+        raise ValueError("CAN data contains invalid hexadecimal bytes") from exc
+
+
+def _parse_channel(value: Any) -> int:
+    if isinstance(value, bool):
+        raise ValueError("CAN channel must not be boolean")  # noqa: TRY004
+    if isinstance(value, str):
+        raw = value.strip().lower().removeprefix("can")
+        value = raw
+    try:
+        return int(value)
+    except (TypeError, ValueError) as exc:
+        raise ValueError("CAN channel must be an integer or can1-style name") from exc
+
+
+def _parse_one_frame(value: Any, *, default_channel: int) -> CanFrame:
+    if not isinstance(value, dict):
+        raise ValueError("each MQTT CAN frame must be a JSON object")  # noqa: TRY004
+    frame_id_value = next((value[key] for key in _ID_KEYS if key in value), None)
+    data_value = next((value[key] for key in _DATA_KEYS if key in value), None)
+    if frame_id_value is None or data_value is None:
+        raise ValueError("MQTT CAN frame requires an ID and data")
+    frame_id = _parse_frame_id(frame_id_value)
+    data = _parse_data(data_value)
+    channel_values = [
+        value[key]
+        for key in ("channelIndex", "channel_index", "channel")
+        if key in value
+    ] or [default_channel]
+    channels = {_parse_channel(channel_value) for channel_value in channel_values}
+    if len(channels) != 1:
+        raise ValueError("MQTT CAN frame channel declarations conflict")
+    channel = channels.pop()
+    if channel not in MQTT_ACCEPTED_FEEDBACK_IDS:
+        raise ValueError("wireless CAN state accepts only CAN0 or CAN1 frames")
+
+    frame_type = str(value.get("frameType", value.get("frame_type", ""))).strip().lower()
+    is_fd = bool(
+        value.get(
+            "is_fd",
+            value.get(
+                "isFd",
+                frame_type in {"fd", "canfd", "can_fd"} if frame_type else len(data) > 8,
+            ),
+        )
+    )
+    bitrate_switch = bool(
+        value.get("bitrate_switch", value.get("bitrateSwitch", value.get("brs", False)))
+    )
+    if not is_fd and len(data) > 8:
+        raise ValueError("classic CAN data must not exceed 8 bytes")
+    if channel == 0 and (is_fd or bitrate_switch or len(data) != 8):
+        raise ValueError(
+            "CAN0 passenger-seat state requires classic CAN, no BRS, and DLC 8"
+        )
+    timestamp_value = value.get("timestamp", value.get("timestamp_s"))
+    timestamp: float | None = None
+    if timestamp_value is not None:
+        if isinstance(timestamp_value, bool):
+            raise ValueError("CAN timestamp must not be boolean")
+        try:
+            timestamp = float(timestamp_value)
+        except (TypeError, ValueError) as exc:
+            raise ValueError("CAN timestamp must be numeric") from exc
+        if not math.isfinite(timestamp) or timestamp < 0:
+            raise ValueError("CAN timestamp must be a finite non-negative number")
+        # n7-can-signals/v1 uses Unix milliseconds while the canonical frame
+        # contract uses Unix seconds.
+        if timestamp >= 100_000_000_000:
+            timestamp /= 1_000
+    return CanFrame(
+        arbitration_id=frame_id,
+        data=data,
+        timestamp=timestamp,
+        channel=channel,
+        is_fd=is_fd,
+        bitrate_switch=bitrate_switch,
+    )
+
+
+def _ota_seat_status_frames(frames: list[CanFrame]) -> list[CanFrame]:
+    """Translate read-only 0x6A0/0x6A2 seat telemetry into 0x302 states.
+
+    The seat-ota runtime returns a selector value in a generic response frame:
+    0x6A0 is ``C7 sequence 60 selector ...`` and 0x6A2 is
+    ``7C sequence 60 status uint32-le``.  Only the non-mutating SEAT_INFO
+    opcode is paired here.  Neither OTA identifier is added to an outbound
+    allow-list or exposed to the ordinary seat executor.
+    """
+
+    selectors_by_request: dict[tuple[int, int], int] = {}
+    for frame in frames:
+        if (
+            frame.channel == 0
+            and frame.arbitration_id == 0x6A0
+            and len(frame.data) == 8
+            and frame.data[0] == 0xC7
+            and frame.data[2] == 0x60
+            and frame.data[3] <= 14
+        ):
+            selectors_by_request[(frame.data[1], frame.data[2])] = frame.data[3]
+
+    values: dict[int, tuple[int, CanFrame]] = {}
+    for frame in frames:
+        if (
+            frame.channel != 0
+            or frame.arbitration_id != 0x6A2
+            or len(frame.data) != 8
+            or frame.data[0] != 0x7C
+            or frame.data[2] != 0x60
+            or frame.data[3] != 0x00
+        ):
+            continue
+        selector = selectors_by_request.get((frame.data[1], frame.data[2]))
+        if selector is None:
+            continue
+        values[selector] = (int.from_bytes(frame.data[4:8], "little"), frame)
+
+    translated: list[CanFrame] = []
+    for axis in range(4):
+        position_entry = values.get(1 + axis)
+        flags_entry = values.get(5 + axis)
+        if position_entry is None or flags_entry is None:
+            continue
+        packed_position, position_frame = position_entry
+        flags, flags_frame = flags_entry
+        position = packed_position & 0xFFFF
+        hall_range = (packed_position >> 16) & 0xFFFF
+        if hall_range <= 0 or position > hall_range:
+            continue
+        value_x100 = min(10_000, round(position * 10_000 / hall_range))
+        moving = bool(flags & (1 << 1))
+        position_valid = bool(flags & (1 << 0))
+        driver_fault = bool(flags & (1 << 3))
+        direction = (flags >> 8) & 0x03
+        task_state = 1 if moving else 0
+        result = 7 if driver_fault else 0
+        state_flags = direction
+        if moving:
+            state_flags |= 1 << 2
+        if position_valid:
+            state_flags |= 1 << 3
+        if position == 0:
+            state_flags |= 1 << 4
+        if position == hall_range:
+            state_flags |= 1 << 5
+        if driver_fault:
+            state_flags |= 1 << 7
+        sequence = flags_frame.data[1]
+        payload = bytes(
+            (
+                axis,
+                task_state | (result << 4),
+                state_flags,
+                sequence,
+                0,
+                value_x100 & 0xFF,
+                (value_x100 >> 8) & 0xFF,
+                0,
+            )
+        )
+        translated.append(
+            CanFrame(
+                arbitration_id=0x302,
+                data=payload,
+                timestamp=max(
+                    value
+                    for value in (position_frame.timestamp, flags_frame.timestamp)
+                    if value is not None
+                )
+                if position_frame.timestamp is not None
+                or flags_frame.timestamp is not None
+                else None,
+                channel=0,
+                is_fd=False,
+                bitrate_switch=False,
+            )
+        )
+    return translated
+
+
+def parse_mqtt_can_payload(payload: bytes | str) -> list[CanFrame]:
+    """Parse one frame or a bounded frame batch from the condition topic."""
+
+    if isinstance(payload, bytes):
+        try:
+            text = payload.decode("utf-8")
+        except UnicodeDecodeError as exc:
+            raise ValueError("MQTT CAN payload is not UTF-8") from exc
+    else:
+        text = payload
+    if len(text.encode("utf-8")) > 256 * 1024:
+        raise ValueError("MQTT CAN payload exceeds 256 KiB")
+    try:
+        decoded = json.loads(text)
+    except json.JSONDecodeError as exc:
+        raise ValueError("MQTT CAN payload must be JSON") from exc
+
+    batches: list[tuple[Any, int]]
+    if isinstance(decoded, dict) and "frames" in decoded:
+        batches = [(decoded["frames"], 1)]
+    elif isinstance(decoded, dict) and "signals" in decoded:
+        # Vehicle-side n7-can-signals/v1 envelope. Its decoded ``parsed``
+        # summary is intentionally ignored: raw frames still pass through the
+        # same per-channel allow-list and decoders as wired traffic.  When the
+        # top-level batch is present, nested copies are intentionally ignored.
+        batches = [(decoded["signals"], 1)]
+    elif isinstance(decoded, dict) and any(
+        isinstance(decoded.get(key), dict) and "signals" in decoded[key]
+        for key in ("can0Seat", "can1Vehicle")
+    ):
+        batches = []
+        for key, default_channel in (("can0Seat", 0), ("can1Vehicle", 1)):
+            block = decoded.get(key)
+            if isinstance(block, dict) and "signals" in block:
+                batches.append((block["signals"], default_channel))
+    elif isinstance(decoded, list):
+        batches = [(decoded, 1)]
+    else:
+        batches = [([decoded], 1)]
+    if any(not isinstance(items, list) for items, _ in batches):
+        raise ValueError("MQTT CAN frame batch must be an array")
+    item_count = sum(len(items) for items, _ in batches)
+    if not 1 <= item_count <= 256:
+        raise ValueError("MQTT CAN frame batch must contain between 1 and 256 frames")
+    frames = [
+        _parse_one_frame(item, default_channel=default_channel)
+        for items, default_channel in batches
+        for item in items
+    ]
+    return [*frames, *_ota_seat_status_frames(frames)]
+
+
+def mqtt_control_payload(frame: CanFrame) -> str:
+    """Serialize one compiled outbound frame using the documented wire contract."""
+
+    return json.dumps(
+        {
+            "schema": MQTT_CAN_SCHEMA,
+            "arbitration_id": frame.arbitration_id,
+            "frame_id": f"0x{frame.arbitration_id:03X}",
+            "channel": frame.channel,
+            "data_hex": frame.data.hex(" ").upper(),
+            "data": list(frame.data),
+            "payload_size": len(frame.data),
+            "is_fd": frame.is_fd,
+            "bitrate_switch": frame.bitrate_switch,
+            "timestamp": time.time(),
+        },
+        ensure_ascii=False,
+        separators=(",", ":"),
+    )
+
+
+def _validate_ota_seat_runtime_control(data: bytes) -> None:
+    """Reject every CAN0 OTA opcode except normal bounded seat runtime control."""
+
+    if len(data) != 8 or data[0] != 0xC7:
+        raise CanGatewayError("CAN0 seat-ota control requires C7 and DLC 8")
+    opcode = data[2]
+    selector = data[3]
+    argument = int.from_bytes(data[4:8], "little")
+    if opcode not in MQTT_OTA_SEAT_RUNTIME_OPCODES:
+        raise CanGatewayError(
+            "CAN0 seat-ota control allows only STOP, MOVE, HEARTBEAT, or DYNAMIC"
+        )
+    if opcode == 0x63 and (selector not in {*range(4), 0xFF} or argument != 0):
+        raise CanGatewayError("CAN0 seat STOP selector or argument is invalid")
+    if opcode == 0x64 and (selector not in range(4) or argument > 1_000):
+        raise CanGatewayError("CAN0 seat MOVE requires axis 0..3 and target 0..1000")
+    if opcode == 0x65 and (selector not in {*range(4), 0xFF} or argument != 0):
+        raise CanGatewayError("CAN0 seat HEARTBEAT selector or argument is invalid")
+    if opcode == 0x66 and (
+        selector not in {1, 2}
+        or (argument != 0 and not 5 <= argument <= 300)
+    ):
+        raise CanGatewayError(
+            "CAN0 seat DYNAMIC requires mode 1/2 and duration 5..300 seconds"
+        )
+
+
+class MqttCanTransport:
+    """One process-wide MQTT connection serving snapshots and executor buses."""
+
+    def __init__(
+        self,
+        settings: VehicleMqttSettings,
+        *,
+        client_factory: Callable[[], Any] | None = None,
+        decoder: Callable[[CanFrame], dict[str, Any]] = decode_feedback,
+    ) -> None:
+        self.settings = settings
+        self.client_factory = client_factory
+        self.decoder = decoder
+        self.initial_snapshot_timeout_s = settings.feedback_timeout_ms / 1_000
+        self.freshness_s = max(3.0, self.initial_snapshot_timeout_s * 2)
+
+        self._condition = threading.Condition(threading.RLock())
+        self._client: Any | None = None
+        self._started = False
+        self._state = "disabled" if not settings.enabled else "idle"
+        self._last_error: str | None = None
+        self._parse_errors = 0
+        self._stale_frames = 0
+        self._capture_sequence = 0
+        self._initial_snapshot_attempted = False
+        self._frames: deque[tuple[int, CanFrame]] = deque(maxlen=4_096)
+        self._latest: dict[int, tuple[float, dict[str, Any]]] = {}
+        self._latest_seen: dict[tuple[int, int], float] = {}
+        self._latest_bus_frames: dict[
+            tuple[int, int, int], tuple[float, CanFrame]
+        ] = {}
+
+    def _build_client(self) -> Any:
+        if self.client_factory is not None:
+            return self.client_factory()
+        try:
+            import paho.mqtt.client as mqtt  # type: ignore[import-not-found]
+        except ImportError as exc:
+            raise CanGatewayError("paho-mqtt is not installed") from exc
+        client_id = f"n7-cognitive-agent-{uuid.uuid4().hex[:12]}"
+        try:
+            return mqtt.Client(
+                callback_api_version=mqtt.CallbackAPIVersion.VERSION2,
+                client_id=client_id,
+                protocol=mqtt.MQTTv311,
+            )
+        except (AttributeError, TypeError):
+            return mqtt.Client(client_id=client_id, protocol=mqtt.MQTTv311)
+
+    def start(self) -> None:
+        with self._condition:
+            if self._started or not self.settings.state_configured:
+                return
+            self._started = True
+            self._state = "connecting"
+        try:
+            client = self._build_client()
+            client.on_connect = self._on_connect
+            client.on_disconnect = self._on_disconnect
+            client.on_message = self._on_message
+            if self.settings.username:
+                client.username_pw_set(self.settings.username, self.settings.password)
+            if self.settings.tls_enabled:
+                client.tls_set()
+            if hasattr(client, "reconnect_delay_set"):
+                client.reconnect_delay_set(min_delay=1, max_delay=10)
+            with self._condition:
+                self._client = client
+            client.connect_async(
+                self.settings.host,
+                self.settings.port,
+                self.settings.keepalive_s,
+            )
+            client.loop_start()
+        except Exception as exc:  # noqa: BLE001 - normalize broker/client failures
+            with self._condition:
+                self._state = "error"
+                self._last_error = str(exc)
+                self._condition.notify_all()
+
+    def close(self) -> None:
+        with self._condition:
+            client = self._client
+            self._client = None
+            self._started = False
+        if client is not None:
+            try:
+                client.disconnect()
+            except Exception:  # noqa: BLE001, S110 - best-effort service shutdown
+                pass
+            try:
+                client.loop_stop()
+            except Exception:  # noqa: BLE001, S110 - best-effort service shutdown
+                pass
+        with self._condition:
+            self._state = "stopped"
+            self._condition.notify_all()
+
+    @staticmethod
+    def _reason_code_value(reason_code: Any) -> int:
+        try:
+            return int(reason_code)
+        except (TypeError, ValueError):
+            return int(getattr(reason_code, "value", 1))
+
+    def _on_connect(
+        self,
+        client: Any,
+        _userdata: Any,
+        _flags: Any,
+        reason_code: Any,
+        _properties: Any = None,
+    ) -> None:
+        code = self._reason_code_value(reason_code)
+        if code != 0:
+            with self._condition:
+                self._state = "error"
+                self._last_error = f"MQTT connection refused with reason {code}"
+                self._condition.notify_all()
+            return
+        result = client.subscribe(self.settings.condition_topic, qos=self.settings.qos)
+        result_code = result[0] if isinstance(result, tuple) else getattr(result, "rc", 0)
+        with self._condition:
+            if int(result_code) == 0:
+                self._state = "online"
+                self._last_error = None
+            else:
+                self._state = "error"
+                self._last_error = f"MQTT subscribe failed with code {result_code}"
+            self._condition.notify_all()
+
+    def _on_disconnect(
+        self,
+        _client: Any,
+        _userdata: Any,
+        *args: Any,
+    ) -> None:
+        reason_code = args[-2] if len(args) >= 2 else args[-1] if args else 0
+        code = self._reason_code_value(reason_code)
+        with self._condition:
+            if self._started:
+                self._state = "connecting"
+                self._last_error = None if code == 0 else f"MQTT disconnected: {code}"
+            else:
+                self._state = "stopped"
+            self._condition.notify_all()
+
+    def _on_message(self, _client: Any, _userdata: Any, message: Any) -> None:
+        if str(getattr(message, "topic", "")) != self.settings.condition_topic:
+            return
+        try:
+            frames = parse_mqtt_can_payload(bytes(message.payload))
+            for frame in frames:
+                self._record_frame(frame)
+        except (TypeError, ValueError) as exc:
+            with self._condition:
+                self._parse_errors += 1
+                self._last_error = str(exc)
+                self._condition.notify_all()
+
+    def _record_frame(self, frame: CanFrame) -> None:
+        if (
+            frame.channel not in MQTT_ACCEPTED_FEEDBACK_IDS
+            or frame.arbitration_id not in MQTT_ACCEPTED_FEEDBACK_IDS[frame.channel]
+            or len(frame.data) < 8
+        ):
+            return
+        cache_age_s = (
+            max(0.0, time.time() - frame.timestamp)
+            if frame.timestamp is not None and frame.timestamp >= 1_000_000_000
+            else 0.0
+        )
+        stale = cache_age_s > self.freshness_s
+        with self._condition:
+            self._capture_sequence += 1
+            sequence = self._capture_sequence
+            self._latest_seen[(frame.channel, frame.arbitration_id)] = time.monotonic()
+            if stale:
+                self._stale_frames += 1
+            else:
+                self._frames.append((sequence, frame))
+                discriminator = (
+                    frame.data[0]
+                    if frame.channel == 0
+                    and frame.arbitration_id == 0x302
+                    and frame.data
+                    else 0
+                )
+                self._latest_bus_frames[
+                    (frame.channel, frame.arbitration_id, discriminator)
+                ] = (time.monotonic(), frame)
+            self._condition.notify_all()
+        if stale and (
+            frame.channel != 1
+            or frame.arbitration_id in MQTT_SAFETY_FEEDBACK_IDS
+            or frame.arbitration_id not in OBSERVABLE_IDS
+        ):
+            # Cached frames never enter an executor bus.  In particular, old
+            # gear/speed evidence cannot satisfy the stationary-vehicle gate.
+            return
+        if frame.channel != 1 or frame.arbitration_id not in OBSERVABLE_IDS:
+            return
+        decoded = self.decoder(frame)
+        if not any(
+            key in decoded
+            for key in ("actuator_state", "domain_state", "vehicle_safety")
+        ):
+            return
+        frame_id = str(decoded.get("frame_id", ""))
+        captured_at = (
+            datetime.fromtimestamp(frame.timestamp, UTC)
+            .isoformat()
+            .replace("+00:00", "Z")
+            if frame.timestamp is not None and frame.timestamp >= 1_000_000_000
+            else _now()
+        )
+        decoded.update(
+            {
+                "valid": True,
+                "feedback_frame_id": frame_id,
+                "captured_at": captured_at,
+                "verification": {
+                    "authoritative": True,
+                    "channel": 1,
+                    "simulated": False,
+                    "read_only": True,
+                    "transport": "wireless_mqtt",
+                    "topic": self.settings.condition_topic,
+                    "frame_id": frame_id,
+                    "payload_size": len(frame.data),
+                    "fresh": not stale,
+                    "display_only": stale,
+                    "control_eligible": not stale,
+                    "cache_age_ms": round(cache_age_s * 1_000),
+                },
+            }
+        )
+        with self._condition:
+            self._latest[frame.arbitration_id] = (time.monotonic(), decoded)
+            self._condition.notify_all()
+
+    def _fresh_ids(self, now: float) -> set[int]:
+        return {
+            frame_id
+            for frame_id, (captured_monotonic, _) in self._latest.items()
+            if now - captured_monotonic <= self.freshness_s
+        }
+
+    def snapshot(self) -> VehicleStateSnapshot:
+        self.start()
+        deadline = time.monotonic() + self.initial_snapshot_timeout_s
+        with self._condition:
+            while not self._initial_snapshot_attempted:
+                fresh_ids = self._fresh_ids(time.monotonic())
+                # A partial live body snapshot is immediately useful to the
+                # dashboard. Completeness remains explicit in the API; only a
+                # completely empty first subscription waits for its bounded
+                # initial frame window.
+                if fresh_ids:
+                    break
+                if self._state == "error":
+                    raise CanGatewayError(self._last_error or "MQTT CAN relay is unavailable")
+                remaining_s = deadline - time.monotonic()
+                if remaining_s <= 0:
+                    break
+                self._condition.wait(timeout=remaining_s)
+            self._initial_snapshot_attempted = True
+            observed_ids = self._fresh_ids(time.monotonic())
+            feedback_states = tuple(
+                deepcopy(self._latest[frame_id][1])
+                for frame_id in sorted(observed_ids)
+            )
+            captured_at = max(
+                (
+                    str(state.get("captured_at"))
+                    for state in feedback_states
+                    if state.get("captured_at")
+                ),
+                default=None,
+            )
+            return VehicleStateSnapshot(
+                feedback_states=feedback_states,
+                observed_ids=frozenset(observed_ids),
+                captured_at=captured_at,
+                capture_sequence=self._capture_sequence,
+            )
+
+    def bus(self, channel: int = 1, *, replay_latest: bool = False) -> MqttCanBus:
+        if channel not in MQTT_ACCEPTED_FEEDBACK_IDS:
+            raise CanGatewayError("MQTT CAN bus channel must be 0 or 1")
+        self.start()
+        with self._condition:
+            cursor = self._capture_sequence
+            now = time.monotonic()
+            initial_frames = tuple(
+                frame
+                for (seen_channel, _frame_id, _discriminator),
+                (captured_monotonic, frame) in sorted(self._latest_bus_frames.items())
+                if replay_latest
+                and seen_channel == channel
+                and now - captured_monotonic <= self.freshness_s
+            )
+        return MqttCanBus(self, cursor, channel, initial_frames=initial_frames)
+
+    def publish(self, frame: CanFrame) -> None:
+        if (
+            frame.channel not in MQTT_APPROVED_CONTROL_IDS
+            or frame.arbitration_id not in MQTT_APPROVED_CONTROL_IDS[frame.channel]
+        ):
+            raise CanGatewayError("MQTT CAN frame is outside the approved channel policy")
+        if frame.channel == 0 and (frame.is_fd or frame.bitrate_switch):
+            raise CanGatewayError("CAN0 passenger-seat control requires classic CAN")
+        if frame.channel == 0:
+            _validate_ota_seat_runtime_control(frame.data)
+        with self._condition:
+            client = self._client
+            state = self._state
+        if client is None or state != "online":
+            raise CanGatewayError("MQTT CAN relay is not connected")
+        result = client.publish(
+            self.settings.control_topic,
+            mqtt_control_payload(frame),
+            qos=self.settings.qos,
+            retain=False,
+        )
+        if int(getattr(result, "rc", 0)) != 0:
+            raise CanGatewayError(f"MQTT CAN publish failed with code {result.rc}")
+        if hasattr(result, "wait_for_publish"):
+            published = result.wait_for_publish(timeout=2.0)
+            if published is False:
+                raise CanGatewayError("MQTT CAN publish confirmation timed out")
+
+    def _receive_after(
+        self,
+        cursor: int,
+        timeout_ms: int,
+        *,
+        channel: int,
+        include_fd: bool,
+    ) -> tuple[int, CanFrame | None]:
+        deadline = time.monotonic() + max(0, timeout_ms) / 1_000
+        with self._condition:
+            while True:
+                for sequence, frame in self._frames:
+                    if sequence <= cursor:
+                        continue
+                    cursor = sequence
+                    if frame.channel == channel and (include_fd or not frame.is_fd):
+                        return cursor, frame
+                remaining_s = deadline - time.monotonic()
+                if timeout_ms <= 0 or remaining_s <= 0:
+                    return cursor, None
+                self._condition.wait(timeout=remaining_s)
+
+    def public_info(self) -> dict[str, Any]:
+        with self._condition:
+            info = self.settings.public_info()
+            now = time.monotonic()
+            observed_by_channel = {
+                str(channel): [
+                    f"0x{frame_id:03X}"
+                    for (seen_channel, frame_id), captured_monotonic in sorted(
+                        self._latest_seen.items()
+                    )
+                    if seen_channel == channel
+                    and now - captured_monotonic <= self.freshness_s
+                ]
+                for channel in MQTT_ACCEPTED_FEEDBACK_IDS
+            }
+            info["state_sync"] = {
+                "mode": "persistent_mqtt_subscription",
+                "state": self._state,
+                "read_only": True,
+                "poll_interval_ms": MQTT_POLL_INTERVAL_MS,
+                "snapshot_freshness_ms": round(self.freshness_s * 1_000),
+                "capture_sequence": self._capture_sequence,
+                "observed_frame_ids": [
+                    f"0x{frame_id:03X}"
+                    for frame_id in sorted(self._fresh_ids(now))
+                ],
+                "observed_frame_ids_by_channel": observed_by_channel,
+                "parse_errors": self._parse_errors,
+                "stale_frames": self._stale_frames,
+                "last_error": self._last_error,
+            }
+            return info
+
+
+class MqttCanBus:
+    """Cursor-based bus view over the shared MQTT subscription."""
+
+    def __init__(
+        self,
+        transport: MqttCanTransport,
+        cursor: int,
+        channel: int,
+        *,
+        initial_frames: tuple[CanFrame, ...] = (),
+    ) -> None:
+        self._transport = transport
+        self._cursor = cursor
+        self.channel = channel
+        self._initial_frames = deque(initial_frames)
+        self._closed = False
+
+    def send(
+        self,
+        arbitration_id: int,
+        data: bytes,
+        *,
+        is_fd: bool = False,
+        bitrate_switch: bool = False,
+    ) -> CanFrame:
+        if self._closed:
+            raise CanGatewayError("MQTT CAN bus is closed")
+        if arbitration_id not in MQTT_APPROVED_CONTROL_IDS[self.channel]:
+            raise CanGatewayError(
+                f"CAN frame ID is not in the approved CAN{self.channel} control set"
+            )
+        if not 1 <= len(data) <= 64 or (not is_fd and len(data) > 8):
+            raise CanGatewayError("invalid CAN payload length")
+        if self.channel == 0 and (is_fd or bitrate_switch):
+            raise CanGatewayError("CAN0 passenger-seat control requires classic CAN")
+        frame = CanFrame(
+            arbitration_id=arbitration_id,
+            data=bytes(data),
+            channel=self.channel,
+            is_fd=is_fd,
+            bitrate_switch=bitrate_switch,
+        )
+        self._transport.publish(frame)
+        return frame
+
+    def receive(
+        self,
+        timeout_ms: int,
+        *,
+        include_fd: bool = False,
+    ) -> CanFrame | None:
+        if self._closed:
+            raise CanGatewayError("MQTT CAN bus is closed")
+        while self._initial_frames:
+            frame = self._initial_frames.popleft()
+            if include_fd or not frame.is_fd:
+                return frame
+        self._cursor, frame = self._transport._receive_after(
+            self._cursor,
+            timeout_ms,
+            channel=self.channel,
+            include_fd=include_fd,
+        )
+        return frame
+
+    def close(self) -> None:
+        self._closed = True

src/cognitive_agent/infrastructure/can/zlgcan_bridge.py

@@ -108,6 +108,7 @@ def emit(value):
 class Driver:
     def __init__(self, args):
         self.transmit_type = args.transmit_type
+        self.monitor_only = bool(args.monitor_only or args.trace_all)
         self.dll = ctypes.WinDLL(args.dll)
         self._declare_functions()
         self.device = self.dll.ZCAN_OpenDevice(args.device_type, args.device_index, 0)
@@ -270,6 +271,8 @@ class Driver:
         raise RuntimeError(operation + " did not accept the frame" + detail)
 
     def send(self, channel, arbitration_id, data, is_fd=False, bitrate_switch=False):
+        if self.monitor_only:
+            raise PermissionError("ZLG bridge is monitor-only; transmit rejected")
         if not 0 <= arbitration_id <= 0x7FF:
             raise ValueError("only 11-bit standard CAN identifiers are allowed")
         handle = self._handle(channel)
@@ -389,6 +392,8 @@ def parse_args():
         help="0 for normal transmission; 2 is diagnostic self-reception",
     )
     parser.add_argument("--self-test", action="store_true")
+    parser.add_argument("--monitor-only", action="store_true")
+    parser.add_argument("--trace-all", action="store_true")
     return parser.parse_args()
 
 
@@ -430,7 +435,14 @@ def main():
     driver = None
     try:
         driver = Driver(args)
-        emit({"ok": True, "event": "ready", "channels": sorted(driver.channels)})
+        emit(
+            {
+                "ok": True,
+                "event": "ready",
+                "channels": sorted(driver.channels),
+                "monitor_only": driver.monitor_only,
+            }
+        )
         for line in sys.stdin:
             try:
                 request = json.loads(line)

src/cognitive_agent/infrastructure/can/zlgcan_linux_bridge.py

@@ -0,0 +1,625 @@
+"""JSON-line bridge for ZLG's Linux ``libusbcanfd`` VCI SDK.
+
+The process owns one USBCANFD-200U and exposes the same small protocol as the
+Windows ``zlgcan_bridge.py``.  Passive vehicle-state synchronization launches
+this bridge with ``--monitor-only`` so every send request is rejected inside
+the hardware-owning process, not merely hidden by the browser.
+
+The ABI below follows the vendor ``zcan.h`` delivered with the verified
+``libusbcanfd.so.1.0.12``.  Both classic CAN and CAN FD queues are polled: the
+SDK does not merge them unless a separate receive mode is explicitly enabled.
+"""
+
+from __future__ import annotations
+
+import argparse
+import ctypes
+import json
+import os
+import sys
+import time
+from collections import deque
+from pathlib import Path
+from typing import Any
+
+CMD_CAN_FILTER = 0x14
+CMD_CAN_TRES = 0x18
+ZCAN_TX_NORM = 0
+
+INFO_FMT_SHIFT = 4
+INFO_REMOTE = 1 << 8
+INFO_EXTENDED = 1 << 9
+INFO_ERROR = 1 << 10
+INFO_BRS = 1 << 11
+
+MAX_BATCH = 64
+CAN_FD_LENGTHS = frozenset((*range(9), 12, 16, 20, 24, 32, 48, 64))
+
+
+class ZcanTiming(ctypes.LittleEndianStructure):
+    _pack_ = 1
+    _fields_ = [  # noqa: RUF012 - ctypes declares ABI fields as a class list
+        ("tseg1", ctypes.c_uint8),
+        ("tseg2", ctypes.c_uint8),
+        ("sjw", ctypes.c_uint8),
+        ("smp", ctypes.c_uint8),
+        ("brp", ctypes.c_uint16),
+    ]
+
+
+class ZcanInit(ctypes.LittleEndianStructure):
+    _pack_ = 1
+    _fields_ = [  # noqa: RUF012 - ctypes declares ABI fields as a class list
+        ("clk", ctypes.c_uint32),
+        ("mode", ctypes.c_uint32),
+        ("aset", ZcanTiming),
+        ("dset", ZcanTiming),
+    ]
+
+
+class ZcanFilter(ctypes.LittleEndianStructure):
+    _pack_ = 1
+    _fields_ = [  # noqa: RUF012 - ctypes declares ABI fields as a class list
+        ("type", ctypes.c_uint8),
+        ("pad", ctypes.c_uint8 * 3),
+        ("sid", ctypes.c_uint32),
+        ("eid", ctypes.c_uint32),
+    ]
+
+
+class ZcanFilterTable(ctypes.LittleEndianStructure):
+    _pack_ = 1
+    _fields_ = [  # noqa: RUF012 - ctypes declares ABI fields as a class list
+        ("size", ctypes.c_uint32),
+        ("table", ZcanFilter * 64),
+    ]
+
+
+class ZcanMessageHeader(ctypes.LittleEndianStructure):
+    _pack_ = 1
+    _fields_ = [  # noqa: RUF012 - ctypes declares ABI fields as a class list
+        ("ts", ctypes.c_uint32),
+        ("id", ctypes.c_uint32),
+        ("inf", ctypes.c_uint32),
+        ("pad", ctypes.c_uint16),
+        ("chn", ctypes.c_uint8),
+        ("len", ctypes.c_uint8),
+    ]
+
+
+class ZcanClassicMessage(ctypes.LittleEndianStructure):
+    _pack_ = 1
+    _fields_ = [  # noqa: RUF012 - ctypes declares ABI fields as a class list
+        ("hdr", ZcanMessageHeader),
+        ("dat", ctypes.c_uint8 * 8),
+    ]
+
+
+class ZcanFdMessage(ctypes.LittleEndianStructure):
+    _pack_ = 1
+    _fields_ = [  # noqa: RUF012 - ctypes declares ABI fields as a class list
+        ("hdr", ZcanMessageHeader),
+        ("dat", ctypes.c_uint8 * 64),
+    ]
+
+
+EXPECTED_ABI_SIZES = {
+    "timing": 6,
+    "init": 20,
+    "filter": 12,
+    "header": 16,
+    "classic": 24,
+    "fd": 80,
+}
+_PROTOCOL_STDOUT: Any | None = None
+
+
+def _separate_protocol_stdout() -> None:
+    """Keep vendor SDK prints out of the JSON-line protocol stream."""
+
+    global _PROTOCOL_STDOUT
+    if _PROTOCOL_STDOUT is not None:
+        return
+    _PROTOCOL_STDOUT = os.fdopen(os.dup(sys.stdout.fileno()), "w", buffering=1)
+    # libusbcanfd writes diagnostics directly to fd 1. Route those messages to
+    # stderr while retaining the duplicated original stdout for JSON replies.
+    os.dup2(sys.stderr.fileno(), sys.stdout.fileno())
+
+
+def emit(value: dict[str, Any]) -> None:
+    stream = _PROTOCOL_STDOUT or sys.stdout
+    print(
+        json.dumps(value, ensure_ascii=False, separators=(",", ":")),
+        file=stream,
+        flush=True,
+    )
+
+
+def log(value: str) -> None:
+    print(value, file=sys.stderr, flush=True)
+
+
+def abi_sizes() -> dict[str, int]:
+    return {
+        "timing": ctypes.sizeof(ZcanTiming),
+        "init": ctypes.sizeof(ZcanInit),
+        "filter": ctypes.sizeof(ZcanFilter),
+        "header": ctypes.sizeof(ZcanMessageHeader),
+        "classic": ctypes.sizeof(ZcanClassicMessage),
+        "fd": ctypes.sizeof(ZcanFdMessage),
+    }
+
+
+def validate_abi() -> None:
+    actual = abi_sizes()
+    if actual != EXPECTED_ABI_SIZES:
+        raise RuntimeError(
+            f"Linux ZLG SDK ABI size mismatch: expected {EXPECTED_ABI_SIZES}, got {actual}"
+        )
+
+
+def _load_sdk(path: str) -> ctypes.CDLL:
+    validate_abi()
+    sdk = ctypes.CDLL(path)
+    required = (
+        "VCI_OpenDevice",
+        "VCI_CloseDevice",
+        "VCI_InitCAN",
+        "VCI_SetReference",
+        "VCI_ClearBuffer",
+        "VCI_StartCAN",
+        "VCI_ResetCAN",
+        "VCI_Transmit",
+        "VCI_TransmitFD",
+        "VCI_Receive",
+        "VCI_ReceiveFD",
+    )
+    missing = [name for name in required if not hasattr(sdk, name)]
+    if missing:
+        raise RuntimeError("Linux ZLG SDK is missing symbols: " + ", ".join(missing))
+    return sdk
+
+
+def _declare_functions(sdk: ctypes.CDLL) -> None:
+    u32 = ctypes.c_uint32
+    sdk.VCI_OpenDevice.argtypes = [u32, u32, u32]
+    sdk.VCI_OpenDevice.restype = u32
+    sdk.VCI_CloseDevice.argtypes = [u32, u32]
+    sdk.VCI_CloseDevice.restype = u32
+    sdk.VCI_InitCAN.argtypes = [u32, u32, u32, ctypes.POINTER(ZcanInit)]
+    sdk.VCI_InitCAN.restype = u32
+    sdk.VCI_SetReference.argtypes = [u32, u32, u32, u32, ctypes.c_void_p]
+    sdk.VCI_SetReference.restype = u32
+    sdk.VCI_ClearBuffer.argtypes = [u32, u32, u32]
+    sdk.VCI_ClearBuffer.restype = u32
+    sdk.VCI_StartCAN.argtypes = [u32, u32, u32]
+    sdk.VCI_StartCAN.restype = u32
+    sdk.VCI_ResetCAN.argtypes = [u32, u32, u32]
+    sdk.VCI_ResetCAN.restype = u32
+    sdk.VCI_Transmit.argtypes = [
+        u32,
+        u32,
+        u32,
+        ctypes.POINTER(ZcanClassicMessage),
+        u32,
+    ]
+    sdk.VCI_Transmit.restype = u32
+    sdk.VCI_TransmitFD.argtypes = [
+        u32,
+        u32,
+        u32,
+        ctypes.POINTER(ZcanFdMessage),
+        u32,
+    ]
+    sdk.VCI_TransmitFD.restype = u32
+    sdk.VCI_Receive.argtypes = [
+        u32,
+        u32,
+        u32,
+        ctypes.POINTER(ZcanClassicMessage),
+        u32,
+        u32,
+    ]
+    sdk.VCI_Receive.restype = u32
+    sdk.VCI_ReceiveFD.argtypes = [
+        u32,
+        u32,
+        u32,
+        ctypes.POINTER(ZcanFdMessage),
+        u32,
+        u32,
+    ]
+    sdk.VCI_ReceiveFD.restype = u32
+
+
+def _channel_configs(raw: str) -> list[dict[str, Any]]:
+    value = json.loads(raw)
+    if not isinstance(value, list) or not value:
+        raise ValueError("channels-json must be a non-empty JSON array")
+    configs: list[dict[str, Any]] = []
+    seen: set[int] = set()
+    for candidate in value:
+        if not isinstance(candidate, dict):
+            raise TypeError("each channel configuration must be an object")
+        config = dict(candidate)
+        channel = int(config["channel"])
+        if channel not in {0, 1}:
+            raise ValueError("USBCANFD-200U channel must be 0 or 1")
+        if channel in seen:
+            raise ValueError("channel numbers must be unique")
+        seen.add(channel)
+        frame_format = str(config.get("frame_format", "can_fd"))
+        if frame_format not in {"classic_can", "can_fd"}:
+            raise ValueError("frame_format must be classic_can or can_fd")
+        raw_receive_ids = config.get("receive_ids")
+        if raw_receive_ids is not None:
+            if not isinstance(raw_receive_ids, list) or not 1 <= len(raw_receive_ids) <= 64:
+                raise ValueError("receive_ids must be an array of 1 to 64 identifiers")
+            if len(raw_receive_ids) != len(set(raw_receive_ids)) or any(
+                isinstance(frame_id, bool)
+                or not isinstance(frame_id, int)
+                or not 0 <= frame_id <= 0x7FF
+                for frame_id in raw_receive_ids
+            ):
+                raise ValueError("receive_ids must contain unique 11-bit identifiers")
+            config["receive_ids"] = frozenset(raw_receive_ids)
+        config["channel"] = channel
+        config["frame_format"] = frame_format
+        configs.append(config)
+    return configs
+
+
+def _verified_init(config: dict[str, Any]) -> ZcanInit:
+    arbitration_bitrate = int(config.get("arbitration_bitrate", 500_000))
+    data_bitrate = int(config.get("data_bitrate", 2_000_000))
+    if arbitration_bitrate != 500_000 or data_bitrate != 2_000_000:
+        raise ValueError(
+            "Linux vehicle CAN timing is locked to 500000/2000000 bit/s"
+        )
+    init = ZcanInit()
+    init.clk = 60_000_000
+    # Vendor ABI: bit0 normal/listen-only, bit1 ISO/BOSCH. Zero is normal ISO.
+    init.mode = 0 if bool(config.get("can_fd_iso", True)) else 2
+    init.aset = ZcanTiming(14, 3, 2, 0, 5)
+    init.dset = ZcanTiming(10, 2, 2, 0, 1)
+    return init
+
+
+def _acceptance_filters(config: dict[str, Any]) -> ZcanFilterTable:
+    """Build exact standard-ID filters when a passive consumer declares its IDs."""
+
+    filters = ZcanFilterTable()
+    receive_ids = config.get("receive_ids")
+    ranges = (
+        [(int(frame_id), int(frame_id)) for frame_id in sorted(receive_ids)]
+        if receive_ids is not None
+        else [(0x000, 0x7FF)]
+    )
+    # This SDK interprets size as valid bytes after the size field.
+    filters.size = len(ranges) * ctypes.sizeof(ZcanFilter)
+    for index, (start_id, end_id) in enumerate(ranges):
+        filters.table[index].type = 0
+        filters.table[index].sid = start_id
+        filters.table[index].eid = end_id
+    return filters
+
+
+class Driver:
+    def __init__(self, args: argparse.Namespace):
+        self.device_type = int(args.device_type)
+        self.device_index = int(args.device_index)
+        self.monitor_only = bool(args.monitor_only or args.trace_all)
+        self.trace_all = bool(args.trace_all)
+        self.sdk = _load_sdk(args.dll)
+        _declare_functions(self.sdk)
+        self.configs = {
+            int(item["channel"]): item for item in _channel_configs(args.channels_json)
+        }
+        self.queues: dict[int, deque[dict[str, Any]]] = {
+            channel: deque() for channel in self.configs
+        }
+        self.started_channels: list[int] = []
+        self.opened = False
+        if self.sdk.VCI_OpenDevice(self.device_type, self.device_index, 0) == 0:
+            raise RuntimeError(
+                "VCI_OpenDevice failed; check USB 3068:0009 permissions and close other owners"
+            )
+        self.opened = True
+        try:
+            for channel, config in self.configs.items():
+                self._initialize_channel(channel, config)
+        except Exception:
+            self.close()
+            raise
+
+    def _initialize_channel(self, channel: int, config: dict[str, Any]) -> None:
+        init = _verified_init(config)
+        if self.sdk.VCI_InitCAN(
+            self.device_type, self.device_index, channel, ctypes.byref(init)
+        ) == 0:
+            raise RuntimeError(f"VCI_InitCAN failed for channel {channel}")
+
+        filters = _acceptance_filters(config)
+        if self.sdk.VCI_SetReference(
+            self.device_type,
+            self.device_index,
+            channel,
+            CMD_CAN_FILTER,
+            ctypes.byref(filters),
+        ) == 0:
+            log(f"[warning] channel {channel}: acceptance filter was not applied")
+
+        termination = ctypes.c_uint32(
+            1 if bool(config.get("termination_enabled", False)) else 0
+        )
+        if self.sdk.VCI_SetReference(
+            self.device_type,
+            self.device_index,
+            channel,
+            CMD_CAN_TRES,
+            ctypes.byref(termination),
+        ) == 0:
+            raise RuntimeError(f"failed to configure termination for channel {channel}")
+
+        if self.sdk.VCI_StartCAN(self.device_type, self.device_index, channel) == 0:
+            raise RuntimeError(f"VCI_StartCAN failed for channel {channel}")
+        self.started_channels.append(channel)
+        self.sdk.VCI_ClearBuffer(self.device_type, self.device_index, channel)
+
+    def _validate_channel(self, channel: int) -> dict[str, Any]:
+        try:
+            return self.configs[channel]
+        except KeyError as exc:
+            raise ValueError(f"channel {channel} was not initialized") from exc
+
+    @staticmethod
+    def _frame(message: Any, *, is_fd: bool) -> dict[str, Any] | None:
+        info = int(message.hdr.inf)
+        if info & INFO_ERROR:
+            log(
+                f"[CAN error] ch={int(message.hdr.chn)} "
+                f"id=0x{int(message.hdr.id):X} fmt={'FD' if is_fd else 'CAN2.0'}"
+            )
+            return None
+        # CanFrame has no representation for extended or remote frames. Do not
+        # let them masquerade as verified standard data frames upstream.
+        if info & (INFO_EXTENDED | INFO_REMOTE):
+            return None
+        maximum = 64 if is_fd else 8
+        length = min(int(message.hdr.len), maximum)
+        return {
+            "arbitration_id": int(message.hdr.id),
+            "data_hex": bytes(message.dat[:length]).hex(),
+            "timestamp_us": int(message.hdr.ts),
+            "is_fd": is_fd,
+            "bitrate_switch": bool(info & INFO_BRS),
+        }
+
+    def _drain(self, channel: int, include_fd: bool) -> None:
+        receive_ids = self.configs[channel].get("receive_ids")
+        classic = (ZcanClassicMessage * MAX_BATCH)()
+        classic_count = int(
+            self.sdk.VCI_Receive(
+                self.device_type,
+                self.device_index,
+                channel,
+                classic,
+                MAX_BATCH,
+                0,
+            )
+        )
+        if classic_count > MAX_BATCH:
+            raise RuntimeError(f"VCI_Receive returned invalid count {classic_count}")
+        for index in range(classic_count):
+            frame = self._frame(classic[index], is_fd=False)
+            if frame is not None and (
+                receive_ids is None or frame["arbitration_id"] in receive_ids
+            ):
+                self.queues[channel].append(frame)
+                self._trace(channel, frame)
+
+        if not include_fd:
+            return
+        fd = (ZcanFdMessage * MAX_BATCH)()
+        fd_count = int(
+            self.sdk.VCI_ReceiveFD(
+                self.device_type,
+                self.device_index,
+                channel,
+                fd,
+                MAX_BATCH,
+                0,
+            )
+        )
+        if fd_count > MAX_BATCH:
+            raise RuntimeError(f"VCI_ReceiveFD returned invalid count {fd_count}")
+        for index in range(fd_count):
+            frame = self._frame(fd[index], is_fd=True)
+            if frame is not None and (
+                receive_ids is None or frame["arbitration_id"] in receive_ids
+            ):
+                self.queues[channel].append(frame)
+                self._trace(channel, frame)
+
+    def _trace(self, channel: int, frame: dict[str, Any]) -> None:
+        if not self.trace_all:
+            return
+        log(
+            "[RX] "
+            f"ID=0x{int(frame['arbitration_id']):03X} ch={channel} "
+            f"len={len(bytes.fromhex(str(frame['data_hex'])))} "
+            f"fmt={'CANFD' if frame['is_fd'] else 'CAN2.0'} "
+            f"brs={int(bool(frame['bitrate_switch']))} id=STD kind=DATA "
+            f"data={frame['data_hex']}"
+        )
+
+    def receive(self, channel: int, timeout_ms: int, include_fd: bool) -> dict[str, Any] | None:
+        config = self._validate_channel(channel)
+        if include_fd and config["frame_format"] != "can_fd":
+            raise ValueError(f"channel {channel} is configured for classic CAN")
+        deadline = time.monotonic() + max(0, timeout_ms) / 1000
+        while True:
+            if self.queues[channel]:
+                return self.queues[channel].popleft()
+            self._drain(channel, include_fd)
+            if self.queues[channel]:
+                return self.queues[channel].popleft()
+            if timeout_ms <= 0 or time.monotonic() >= deadline:
+                return None
+            time.sleep(min(0.001, max(0.0, deadline - time.monotonic())))
+
+    def send(
+        self,
+        channel: int,
+        arbitration_id: int,
+        data: bytes,
+        *,
+        is_fd: bool,
+        bitrate_switch: bool,
+    ) -> dict[str, Any]:
+        config = self._validate_channel(channel)
+        if self.monitor_only:
+            raise PermissionError("Linux ZLG bridge is monitor-only; transmit rejected")
+        if not 0 <= arbitration_id <= 0x7FF:
+            raise ValueError("only 11-bit standard CAN identifiers are allowed")
+        if is_fd and config["frame_format"] != "can_fd":
+            raise ValueError(f"channel {channel} is configured for classic CAN")
+        if is_fd and len(data) not in CAN_FD_LENGTHS:
+            raise ValueError("invalid CAN FD payload length")
+        if not is_fd and len(data) > 8:
+            raise ValueError("classic CAN payload cannot exceed 8 bytes")
+
+        info = ZCAN_TX_NORM
+        if is_fd:
+            info |= 1 << INFO_FMT_SHIFT
+        if bitrate_switch:
+            if not is_fd:
+                raise ValueError("bitrate switch requires a CAN FD frame")
+            info |= INFO_BRS
+        message_type = ZcanFdMessage if is_fd else ZcanClassicMessage
+        message = message_type()
+        message.hdr.id = arbitration_id
+        message.hdr.inf = info
+        message.hdr.chn = channel
+        message.hdr.len = len(data)
+        for index, byte in enumerate(data):
+            message.dat[index] = byte
+        log(
+            "[TX] "
+            f"ID=0x{arbitration_id:03X} ch={channel} len={len(data)} "
+            f"fmt={'CANFD' if is_fd else 'CAN2.0'} brs={int(bitrate_switch)} "
+            f"id=STD kind=DATA err=0 data={data.hex()}"
+        )
+        transmit = self.sdk.VCI_TransmitFD if is_fd else self.sdk.VCI_Transmit
+        if transmit(
+            self.device_type,
+            self.device_index,
+            channel,
+            ctypes.byref(message),
+            1,
+        ) != 1:
+            raise RuntimeError(f"{'VCI_TransmitFD' if is_fd else 'VCI_Transmit'} returned 0")
+        return {
+            "arbitration_id": arbitration_id,
+            "data_hex": data.hex(),
+            "is_fd": is_fd,
+            "bitrate_switch": bitrate_switch,
+        }
+
+    def close(self) -> None:
+        if not self.opened:
+            return
+        for channel in reversed(self.started_channels):
+            self.sdk.VCI_ResetCAN(self.device_type, self.device_index, channel)
+        self.sdk.VCI_CloseDevice(self.device_type, self.device_index)
+        self.opened = False
+
+
+def _parser() -> argparse.ArgumentParser:
+    parser = argparse.ArgumentParser(description="Run the Linux ZLG VCI JSON bridge")
+    parser.add_argument("--dll", required=True, help="Path to libusbcanfd.so")
+    parser.add_argument("--device-type", type=int, default=33)
+    parser.add_argument("--device-index", type=int, default=0)
+    parser.add_argument("--channels-json", default="[]")
+    # Accepted for protocol compatibility with the Windows bridge. Linux VCI
+    # transmit mode is encoded directly in each message.
+    parser.add_argument("--transmit-type", type=int, default=0)
+    parser.add_argument("--monitor-only", action="store_true")
+    parser.add_argument("--trace-all", action="store_true")
+    parser.add_argument("--self-test", action="store_true")
+    return parser
+
+
+def _self_test(args: argparse.Namespace) -> None:
+    sdk = _load_sdk(args.dll)
+    _declare_functions(sdk)
+    emit(
+        {
+            "ok": True,
+            "event": "self_test",
+            "library": str(Path(args.dll).resolve()),
+            "device_opened": False,
+            "monitor_only": True,
+            "abi_sizes": abi_sizes(),
+        }
+    )
+
+
+def main() -> None:
+    args = _parser().parse_args()
+    _separate_protocol_stdout()
+    if args.self_test:
+        _self_test(args)
+        return
+    driver: Driver | None = None
+    try:
+        driver = Driver(args)
+        emit(
+            {
+                "ok": True,
+                "event": "ready",
+                "backend": "linux_vci",
+                "device_type": args.device_type,
+                "device_index": args.device_index,
+                "channels": sorted(driver.configs),
+                "monitor_only": driver.monitor_only,
+            }
+        )
+        for raw in sys.stdin:
+            try:
+                request = json.loads(raw)
+                operation = str(request.get("operation", ""))
+                if operation == "close":
+                    emit({"ok": True, "event": "closed"})
+                    break
+                if operation == "receive":
+                    frame = driver.receive(
+                        int(request["channel"]),
+                        max(0, int(request.get("timeout_ms", 0))),
+                        bool(request.get("include_fd", False)),
+                    )
+                    emit({"ok": True, "frame": frame})
+                    continue
+                if operation == "send":
+                    response = driver.send(
+                        int(request["channel"]),
+                        int(request["arbitration_id"]),
+                        bytes.fromhex(str(request.get("data_hex", ""))),
+                        is_fd=bool(request.get("is_fd", False)),
+                        bitrate_switch=bool(request.get("bitrate_switch", False)),
+                    )
+                    emit({"ok": True, **response})
+                    continue
+                raise ValueError(f"unsupported operation: {operation!r}")
+            except Exception as exc:  # noqa: BLE001 - JSON process boundary
+                emit({"ok": False, "message": str(exc)})
+    except Exception as exc:
+        emit({"ok": False, "message": str(exc)})
+        raise SystemExit(1) from exc
+    finally:
+        if driver is not None:
+            driver.close()
+
+
+if __name__ == "__main__":
+    main()

src/cognitive_agent/server.py

@@ -237,6 +237,9 @@ class SeatDemoHandler(BaseHTTPRequestHandler):
             query = parse_qs(parsed_url.query)
             conversation_id = str(query.get("conversation_id", [""])[0])
             vehicle_id = str(query.get("vehicle_id", [""])[0]) or None
+            control_transport = str(
+                query.get("control_transport", ["wired_can"])[0]
+            )
             hardware_client_id = str(query.get("hardware_client_id", [""])[0]) or None
             try:
                 self._json(
@@ -247,6 +250,7 @@ class SeatDemoHandler(BaseHTTPRequestHandler):
                     )(
                         conversation_id,
                         vehicle_id,
+                        control_transport=control_transport,
                         hardware_client_id=hardware_client_id,
                         hardware_access_bypass=self._is_unproxied_loopback_request(),
                     )
@@ -420,6 +424,9 @@ class SeatDemoHandler(BaseHTTPRequestHandler):
                     if payload.get("reasoning_effort") is not None
                     else None
                 ),
+                control_transport=str(
+                    payload.get("control_transport", "wired_can")
+                ),
             )
             self.vehicle_display_sync.update_task(
                 status=str(result.get("status", "succeeded")),
@@ -1209,6 +1216,7 @@ def main() -> None:
     parser.add_argument("--port", type=int, default=int(os.getenv("PORT", "8000")))
     args = parser.parse_args()
     server = ThreadingHTTPServer((args.host, args.port), SeatDemoHandler)
+    SeatDemoHandler.service.start()
     SeatDemoHandler.extension.start()
     SeatDemoHandler.calibration.start()
     SeatDemoHandler.repair.start()
@@ -1240,6 +1248,7 @@ def main() -> None:
         pass
     finally:
         server.server_close()
+        SeatDemoHandler.service.close()
         SeatDemoHandler.extension.close()
         SeatDemoHandler.calibration.close()
         SeatDemoHandler.repair.close()

tests/e2e/test_seat_web_api.py

@@ -10,6 +10,7 @@ import urllib.request
 from http.cookiejar import CookieJar
 from http.server import ThreadingHTTPServer
 from pathlib import Path
+from types import SimpleNamespace
 from unittest.mock import patch
 
 from cognitive_agent.auth import AuthConfig, AuthRuntime, hash_password
@@ -229,18 +230,18 @@ operations:
     def test_static_console_and_runtime_endpoint(self) -> None:
         with self.opener.open(f"{self.base_url}/", timeout=3) as response:
             html = response.read().decode("utf-8")
-        with self.opener.open(f"{self.base_url}/app.js?v=dual-seat-85", timeout=3) as response:
+        with self.opener.open(f"{self.base_url}/app.js?v=dual-seat-90", timeout=3) as response:
             app_script = response.read().decode("utf-8")
         with self.opener.open(
             f"{self.base_url}/gesture-control.js?v=android-pad-8", timeout=3
         ) as response:
             gesture_script = response.read().decode("utf-8")
         with self.opener.open(
-            f"{self.base_url}/console-v2.js?v=sync-layout-26", timeout=3
+            f"{self.base_url}/console-v2.js?v=sync-layout-27", timeout=3
         ) as response:
             console_script = response.read().decode("utf-8")
         with self.opener.open(
-            f"{self.base_url}/console-v2.css?v=sync-layout-26", timeout=3
+            f"{self.base_url}/console-v2.css?v=sync-layout-27", timeout=3
         ) as response:
             console_styles = response.read().decode("utf-8")
         with self.opener.open(
@@ -275,12 +276,12 @@ operations:
         self.assertIn("CMD 0x431 · FB 0x41A · CH1", html)
         self.assertIn("CMD 0x431 · FB 0x388 · CH1", html)
         self.assertNotIn("透明车体 · 实体设备", html)
-        self.assertIn('src="/app.js?v=dual-seat-85"', html)
+        self.assertIn('src="/app.js?v=dual-seat-90"', html)
-        self.assertIn('href="/styles.css?v=dual-seat-9"', html)
+        self.assertIn('href="/styles.css?v=dual-seat-10"', html)
         self.assertIn('src="/gesture-control.js?v=android-pad-8"', html)
         self.assertNotIn('class="vehicle-system-hud"', html)
-        self.assertIn('src="/console-v2.js?v=sync-layout-26"', html)
+        self.assertIn('src="/console-v2.js?v=sync-layout-27"', html)
-        self.assertIn('href="/console-v2.css?v=sync-layout-26"', html)
+        self.assertIn('href="/console-v2.css?v=sync-layout-27"', html)
         self.assertIn('src="/self-extension.js?v=sync-layout-26"', html)
         self.assertIn('href="/self-extension.css?v=sync-layout-26"', html)
         self.assertNotIn("self-calibration", html)
@@ -398,7 +399,19 @@ operations:
         self.assertIn('const dynamicModeOrder = ["rocking_horse", "dynamic_cradle"]', app_script)
         self.assertIn('divider.className = "mode-group-divider"', app_script)
         self.assertIn(
-            'mode === "hardware" && !state.runtime?.hardware_execution_allowed',
+            'mode === "hardware" && !hardwareExecutionReady',
+            app_script,
+        )
+        self.assertIn('data-control-transport="wired_can"', html)
+        self.assertIn('data-control-transport="wireless_mqtt"', html)
+        self.assertIn('control_transport: state.controlTransport', app_script)
+        self.assertIn('const transportField = $("#vehicleTransportField", originalForm)', console_script)
+        self.assertIn('configStack.append(transportField)', console_script)
+        self.assertIn('.console-v2 .v2-transport-field .vehicle-transport-options', console_styles)
+        self.assertIn('button.disabled = false', app_script)
+        self.assertIn('button.setAttribute("aria-pressed", String(selected))', app_script)
+        self.assertNotIn(
+            'availableTransports.find((item) => item.state_configured)?.id',
             app_script,
         )
         self.assertIn("hardwareButton.disabled = !hardwareExecutionReady", app_script)
@@ -484,7 +497,7 @@ operations:
         self.assertIn('client_type: "web_console"', app_script)
         self.assertIn('canvas.addEventListener("webglcontextlost"', app_script)
         self.assertIn('"cognitive-agent:module-change"', app_script)
-        self.assertIn('const CACHE_VERSION = "cognitive-agent-pad-v178"', service_worker)
+        self.assertIn('const CACHE_VERSION = "cognitive-agent-pad-v179"', service_worker)
         self.assertIn('"/assets/pets/self-extension-cat.png?v=3"', service_worker)
         self.assertIn(".then(() => self.skipWaiting())", service_worker)
         self.assertNotIn("const cached = await caches.match(request)", service_worker)
@@ -700,7 +713,7 @@ operations:
         ) as response:
             extension_script = response.read().decode("utf-8")
         with self.opener.open(
-            f"{self.base_url}/app.js?v=dual-seat-83", timeout=3
+            f"{self.base_url}/app.js?v=dual-seat-90", timeout=3
         ) as response:
             app_script = response.read().decode("utf-8")
 
@@ -1033,10 +1046,103 @@ operations:
         synchronize.assert_called_once_with(
             "conv-e2e-physical-state",
             "denza_n7",
+            control_transport="wired_can",
             hardware_client_id=None,
             hardware_access_bypass=True,
         )
 
+    def test_wireless_passenger_snapshot_uses_mqtt_can0(self) -> None:
+        physical_state = {
+            "position": {
+                "longitudinal": {
+                    "position_pct": 42,
+                    "position_valid": True,
+                    "motion_state": "stopped",
+                    "fault": False,
+                }
+            },
+            "captured_at": "2026-08-18T00:00:00Z",
+            "complete": True,
+            "missing": [],
+        }
+        executor = SimpleNamespace(read_physical_state=lambda: dict(physical_state))
+        with (
+            patch.object(
+                self.service,
+                "vehicle_mqtt_settings",
+                SimpleNamespace(state_configured=True),
+            ),
+            patch.object(
+                self.service._vehicle_mqtt_transport,
+                "bus",
+                return_value=object(),
+            ) as mqtt_bus,
+            patch.object(
+                self.service,
+                "_new_hardware_executor",
+                return_value=executor,
+            ) as new_executor,
+            patch.object(
+                self.service.hardware_execution,
+                "reserve",
+                side_effect=AssertionError(
+                    "wireless cached state must not reserve the physical bench"
+                ),
+            ),
+        ):
+            payload = self.service.synchronize_hardware_state(
+                "conv-e2e-wireless-seat-state",
+                "denza_n7",
+                control_transport="wireless_mqtt",
+                hardware_access_bypass=True,
+            )
+            bus_factory = new_executor.call_args.args[0]
+            bus_factory()
+            mqtt_bus.assert_called_once_with(channel=0, replay_latest=True)
+            self.assertTrue(new_executor.call_args.kwargs["remote_transport"])
+        self.assertEqual(payload["source"], "wireless_mqtt_ch0")
+        self.assertEqual(payload["control_transport"], "wireless_mqtt")
+        self.assertEqual(
+            payload["actuator_state"]["passenger"]["position"]["longitudinal"]["position_pct"],
+            42,
+        )
+
+    def test_wireless_vehicle_snapshot_does_not_reserve_physical_bench(self) -> None:
+        snapshot = SimpleNamespace(
+            feedback_states=(),
+            observed_ids=frozenset(),
+            captured_at="2026-08-18T00:00:00Z",
+            capture_sequence=17,
+        )
+        with (
+            patch.object(
+                self.service,
+                "vehicle_mqtt_settings",
+                SimpleNamespace(state_configured=True),
+            ),
+            patch.object(
+                self.service._vehicle_mqtt_transport,
+                "snapshot",
+                return_value=snapshot,
+            ),
+            patch.object(
+                self.service.hardware_execution,
+                "reserve",
+                side_effect=AssertionError(
+                    "wireless cached state must not reserve the physical bench"
+                ),
+            ),
+        ):
+            payload = self.service.synchronize_vehicle_state(
+                "conv-e2e-wireless-vehicle-state",
+                "denza_n7",
+                control_transport="wireless_mqtt",
+                hardware_access_bypass=True,
+            )
+
+        self.assertEqual(payload["source"], "wireless_mqtt_ch1")
+        self.assertEqual(payload["capture_sequence"], 17)
+
     def test_gpt_http_failure_falls_back_without_returning_502(self) -> None:
         original_api_key = self.service.openai.api_key
         self.service.openai.api_key = "test-key"

tests/unit/test_ch1_vehicle_safety.py

@@ -1,9 +1,11 @@
 from __future__ import annotations
 
-from contextlib import nullcontext
 import os
-from types import SimpleNamespace
+import sys
 import unittest
+from contextlib import nullcontext
+from pathlib import Path
+from types import SimpleNamespace
 from unittest.mock import Mock, patch
 
 from cognitive_agent.application.seat_service import REPOSITORY_ROOT, SeatDemoService
@@ -21,6 +23,8 @@ class Ch1VehicleSafetyTests(unittest.TestCase):
             "COGNITIVE_AGENT_VEHICLE_CAN_REQUIRED_CHANNEL": "1",
             "COGNITIVE_AGENT_HARDWARE_APPROVAL_TOKEN_REQUIRED": "true",
             "COGNITIVE_AGENT_HARDWARE_APPROVAL_TOKEN": "approved",
+            "COGNITIVE_AGENT_ZLGCAN_PYTHON": sys.executable,
+            "COGNITIVE_AGENT_ZLGCAN_DLL": str(Path(__file__).resolve()),
         }
         with patch.dict(os.environ, environment, clear=False):
             return VehicleCanSettings.from_env(REPOSITORY_ROOT)

tests/unit/test_frontend_vehicle_state_sync_contract.py

@@ -214,9 +214,18 @@ class FrontendVehicleStateSyncContractTests(unittest.TestCase):
             "async function synchronizePhysicalSeatState() {",
             "\nasync function loadAuthStatus()",
         )
-        self.assertIn("state.runtime?.hardware?.configured", passenger_source)
+        self.assertIn('requestedTransport === "wireless_mqtt"', passenger_source)
+        self.assertIn("selectedVehicleTransport()?.state_configured", passenger_source)
+        self.assertIn("control_transport: requestedTransport", passenger_source)
+        self.assertIn("requestedTransport !== state.controlTransport", passenger_source)
+        self.assertIn('payload.source === "wireless_mqtt_ch0"', passenger_source)
         self.assertIn("/api/hardware/seat-state", passenger_source)
+        self.assertIn("selectedVehicleTransport()?.state_configured", driver_source)
+        self.assertIn("control_transport: requestedTransport", driver_source)
+        self.assertIn("requestedTransport !== state.controlTransport", driver_source)
         self.assertIn("/api/hardware/vehicle-state", driver_source)
+        self.assertIn('state.controlTransport === "wireless_mqtt"', combined_source)
+        self.assertIn("state.passengerStateSyncPromise", combined_source)
         self.assertLess(
             combined_source.index("synchronizePassengerSeatState()"),
             combined_source.index("synchronizeDriverSeatState()"),
@@ -228,6 +237,18 @@ class FrontendVehicleStateSyncContractTests(unittest.TestCase):
         )
         self.assertNotIn("passenger: mergedActuatorState.driver", render_source)
 
+    def test_persistent_linux_monitor_uses_backend_selected_fast_polling(self) -> None:
+        interval_source = function_source(
+            self.app_source,
+            "function physicalStatePollIntervalMs() {",
+            "\nfunction refreshIcons",
+        )
+        self.assertIn("selectedVehicleTransport()?.state_sync?.poll_interval_ms", interval_source)
+        self.assertIn("Math.max(250", interval_source)
+        self.assertIn("DEFAULT_PHYSICAL_STATE_POLL_INTERVAL_MS = 5000", self.app_source)
+        self.assertIn("}, physicalStatePollIntervalMs());", self.app_source)
+        self.assertIn("restartPhysicalStatePolling();", self.app_source)
+
     def test_vehicle_selection_cannot_replay_unfiltered_state_in_ch1_mode(self) -> None:
         select_source = function_source(
             self.app_source,

tests/unit/test_mqtt_can_transport.py

@@ -0,0 +1,581 @@
+from __future__ import annotations
+
+import json
+import time
+import unittest
+from types import SimpleNamespace
+from unittest.mock import patch
+
+from cognitive_agent.infrastructure.can.gateway import CanFrame
+from cognitive_agent.infrastructure.can.hardware import (
+    HardwareSafetyError,
+    VehicleMqttSettings,
+)
+from cognitive_agent.infrastructure.can.mqtt_transport import (
+    MQTT_CAN_SCHEMA,
+    MqttCanTransport,
+    parse_mqtt_can_payload,
+)
+
+
+class _PublishResult:
+    rc = 0
+
+    def wait_for_publish(self, timeout: float) -> bool:
+        return timeout > 0
+
+
+class _FakeMqttClient:
+    def __init__(self) -> None:
+        self.on_connect = None
+        self.on_disconnect = None
+        self.on_message = None
+        self.subscriptions: list[tuple[str, int]] = []
+        self.published: list[tuple[str, str, int, bool]] = []
+
+    def reconnect_delay_set(self, **_kwargs) -> None:
+        return None
+
+    def connect_async(self, host: str, port: int, keepalive: int) -> None:
+        self.connection = (host, port, keepalive)
+
+    def loop_start(self) -> None:
+        self.on_connect(self, None, {}, 0, None)
+
+    def loop_stop(self) -> None:
+        return None
+
+    def disconnect(self) -> None:
+        return None
+
+    def subscribe(self, topic: str, qos: int):
+        self.subscriptions.append((topic, qos))
+        return (0, 1)
+
+    def publish(self, topic: str, payload: str, qos: int, retain: bool):
+        self.published.append((topic, payload, qos, retain))
+        return _PublishResult()
+
+    def emit(self, topic: str, payload: object) -> None:
+        message = SimpleNamespace(
+            topic=topic,
+            payload=json.dumps(payload).encode("utf-8"),
+        )
+        self.on_message(self, None, message)
+
+
+def _settings():
+    values = {
+        "enabled": True,
+        "state_configured": True,
+        "configured": True,
+        "host": "127.0.0.1",
+        "port": 1883,
+        "condition_topic": "n7/n7-headunit/can/state",
+        "control_topic": "n7/can_control",
+        "qos": 1,
+        "keepalive_s": 30,
+        "username": None,
+        "password": None,
+        "tls_enabled": False,
+        "feedback_timeout_ms": 100,
+    }
+    values["public_info"] = lambda: {
+        "enabled": True,
+        "configured": True,
+        "state_configured": True,
+        "backend": "mqtt",
+        "condition_topic": "n7/n7-headunit/can/state",
+        "control_topic": "n7/can_control",
+    }
+    return SimpleNamespace(**values)
+
+
+class MqttCanPayloadTests(unittest.TestCase):
+    def test_accepts_one_canonical_frame_and_common_receive_aliases(self) -> None:
+        canonical = parse_mqtt_can_payload(
+            json.dumps(
+                {
+                    "schema": MQTT_CAN_SCHEMA,
+                    "arbitration_id": 0x342,
+                    "channel": 1,
+                    "data_hex": "00 00 00 01 00 00 00 00",
+                    "is_fd": True,
+                    "bitrate_switch": True,
+                }
+            )
+        )[0]
+        alias = parse_mqtt_can_payload(
+            json.dumps({"canId": "0x4FA", "data": [0] * 8})
+        )[0]
+        self.assertEqual(canonical.arbitration_id, 0x342)
+        self.assertEqual(canonical.channel, 1)
+        self.assertTrue(canonical.is_fd)
+        self.assertEqual(alias.arbitration_id, 0x4FA)
+
+    def test_accepts_vehicle_n7_can_signals_envelope(self) -> None:
+        frames = parse_mqtt_can_payload(
+            json.dumps(
+                {
+                    "schema": "n7-can-signals/v1",
+                    "sequence": 335,
+                    "timestamp": 1787037724090,
+                    "online": True,
+                    "signals": [
+                        {
+                            "channel": "can1",
+                            "channelIndex": 1,
+                            "canId": "0x388",
+                            "canIdDecimal": 904,
+                            "frameType": "fd",
+                            "brs": True,
+                            "dlc": 8,
+                            "data": "00 00 00 02 01 00 59 00",
+                            "bytes": [0, 0, 0, 2, 1, 0, 89, 0],
+                            "timestamp": 1787037667665,
+                            "direction": "rx",
+                        }
+                    ],
+                    "can1Vehicle": {
+                        "parsed": {"speedKph": 0, "gear": 1}
+                    },
+                }
+            )
+        )
+        self.assertEqual(len(frames), 1)
+        self.assertEqual(frames[0].arbitration_id, 0x388)
+        self.assertEqual(frames[0].channel, 1)
+        self.assertEqual(frames[0].data, bytes.fromhex("00 00 00 02 01 00 59 00"))
+        self.assertTrue(frames[0].is_fd)
+        self.assertTrue(frames[0].bitrate_switch)
+        self.assertEqual(frames[0].timestamp, 1787037667.665)
+
+    def test_accepts_nested_can1_vehicle_signals_when_top_level_is_absent(self) -> None:
+        frame = parse_mqtt_can_payload(
+            json.dumps(
+                {
+                    "schema": "n7-can-signals/v1",
+                    "can1Vehicle": {
+                        "signals": [
+                            {
+                                "channel": "can1",
+                                "canId": "0x42E",
+                                "frameType": "fd",
+                                "brs": True,
+                                "bytes": [17, 100, 50, 3, 144, 2, 0, 198],
+                            }
+                        ]
+                    },
+                }
+            )
+        )[0]
+        self.assertEqual(frame.arbitration_id, 0x42E)
+        self.assertTrue(frame.is_fd)
+
+    def test_accepts_nested_can0_seat_signals_with_can0_default(self) -> None:
+        frame = parse_mqtt_can_payload(
+            json.dumps(
+                {
+                    "schema": "n7-can-signals/v1",
+                    "can0Seat": {
+                        "signals": [
+                            {
+                                "canId": "0x302",
+                                "frameType": "classic",
+                                "bytes": [0] * 8,
+                            }
+                        ]
+                    },
+                }
+            )
+        )[0]
+        self.assertEqual(frame.arbitration_id, 0x302)
+        self.assertEqual(frame.channel, 0)
+        self.assertFalse(frame.is_fd)
+
+    def test_translates_seat_ota_info_responses_into_four_position_states(self) -> None:
+        values = {
+            1: (480 << 16) | 407,
+            2: (373 << 16) | 266,
+            3: (917 << 16) | 451,
+            4: (647 << 16) | 575,
+            5: 0x11,
+            6: 0x11,
+            7: 0x11,
+            8: 0x11,
+        }
+        signals = []
+        for selector, value in values.items():
+            sequence = 0x20 + selector
+            signals.extend(
+                (
+                    {
+                        "channel": "can0",
+                        "canId": "0x6A0",
+                        "frameType": "classic",
+                        "direction": "tx",
+                        "bytes": [0xC7, sequence, 0x60, selector, 0, 0, 0, 0],
+                    },
+                    {
+                        "channel": "can0",
+                        "canId": "0x6A2",
+                        "frameType": "classic",
+                        "direction": "rx",
+                        "bytes": [0x7C, sequence, 0x60, 0, *value.to_bytes(4, "little")],
+                    },
+                )
+            )
+
+        frames = parse_mqtt_can_payload(json.dumps({"signals": signals}))
+        positions = [frame for frame in frames if frame.arbitration_id == 0x302]
+
+        self.assertEqual([frame.data[0] for frame in positions], [0, 1, 2, 3])
+        self.assertEqual(
+            [int.from_bytes(frame.data[5:7], "little") for frame in positions],
+            [round(407 * 10_000 / 480), round(266 * 10_000 / 373),
+             round(451 * 10_000 / 917), round(575 * 10_000 / 647)],
+        )
+        self.assertTrue(all(frame.data[2] & (1 << 3) for frame in positions))
+
+    def test_rejects_can0_frames_outside_seat_firmware_format(self) -> None:
+        for label, frame in (
+            (
+                "fd",
+                {
+                    "channel": "can0",
+                    "canId": "0x302",
+                    "frameType": "fd",
+                    "bytes": [0] * 8,
+                },
+            ),
+            (
+                "brs",
+                {
+                    "channel": "can0",
+                    "canId": "0x302",
+                    "frameType": "classic",
+                    "brs": True,
+                    "bytes": [0] * 8,
+                },
+            ),
+            (
+                "dlc",
+                {
+                    "channel": "can0",
+                    "canId": "0x302",
+                    "frameType": "classic",
+                    "bytes": [0] * 7,
+                },
+            ),
+        ):
+            with self.subTest(label=label), self.assertRaisesRegex(
+                ValueError, "classic CAN, no BRS, and DLC 8"
+            ):
+                parse_mqtt_can_payload(json.dumps(frame))
+
+    def test_top_level_signals_can_mix_can0_and_can1_without_nested_duplicates(self) -> None:
+        frames = parse_mqtt_can_payload(
+            json.dumps(
+                {
+                    "schema": "n7-can-signals/v1",
+                    "signals": [
+                        {"channel": "can0", "canId": "0x302", "bytes": [0] * 8},
+                        {"channel": "can1", "canId": "0x342", "bytes": [0] * 8},
+                    ],
+                    "can0Seat": {
+                        "signals": [
+                            {"channel": "can0", "canId": "0x302", "bytes": [0] * 8}
+                        ]
+                    },
+                }
+            )
+        )
+        self.assertEqual(
+            [(frame.channel, frame.arbitration_id) for frame in frames],
+            [(0, 0x302), (1, 0x342)],
+        )
+
+    def test_rejects_decoded_state_invalid_channels_and_channel_conflicts(self) -> None:
+        with self.assertRaisesRegex(ValueError, "requires an ID and data"):
+            parse_mqtt_can_payload(json.dumps({"gear": "P", "speed_kmh": 0}))
+        with self.assertRaisesRegex(ValueError, "only CAN0 or CAN1"):
+            parse_mqtt_can_payload(
+                json.dumps({"id": 0x342, "channel": 2, "data": [0] * 8})
+            )
+        with self.assertRaisesRegex(ValueError, "declarations conflict"):
+            parse_mqtt_can_payload(
+                json.dumps(
+                    {
+                        "id": 0x342,
+                        "channel": "can1",
+                        "channelIndex": 0,
+                        "data": [0] * 8,
+                    }
+                )
+            )
+
+    def test_control_remains_locked_without_existing_hardware_approval(self) -> None:
+        settings = VehicleMqttSettings(
+            enabled=True,
+            approval_required=True,
+            approval_token="",
+            host="127.0.0.1",
+            port=1883,
+            condition_topic="n7/n7-headunit/can/state",
+            control_topic="n7/can_control",
+            qos=1,
+            keepalive_s=30,
+            username=None,
+            password=None,
+            tls_enabled=False,
+            feedback_timeout_ms=1_500,
+        )
+        with patch(
+            "cognitive_agent.infrastructure.can.hardware._module_available",
+            return_value=True,
+        ):
+            self.assertTrue(settings.state_configured)
+            self.assertFalse(settings.configured)
+            with self.assertRaisesRegex(HardwareSafetyError, "not configured"):
+                settings.authorize(None)
+
+
+class MqttCanTransportTests(unittest.TestCase):
+    def setUp(self) -> None:
+        self.client = _FakeMqttClient()
+        self.transport = MqttCanTransport(
+            _settings(),
+            client_factory=lambda: self.client,
+        )
+        self.transport.start()
+
+    def tearDown(self) -> None:
+        self.transport.close()
+
+    def test_condition_frames_use_existing_decoder_and_snapshot_contract(self) -> None:
+        self.client.emit(
+            "n7/n7-headunit/can/state",
+            {
+                "frames": [
+                    {"id": 0x342, "data": [0, 0, 0, 1, 0, 0, 0, 0]},
+                    {"id": 0x4EB, "data": [7, 0, 0, 0, 0, 0, 0, 0]},
+                    {"id": 0x407, "data": [0] * 8},
+                    {"id": 0x494, "data": [0] * 8},
+                    {"id": 0x4FA, "data": [0] * 8},
+                    {"id": 0x555, "data": [255] * 8},
+                ]
+            },
+        )
+        snapshot = self.transport.snapshot()
+        self.assertEqual(
+            snapshot.observed_ids,
+            frozenset({0x342, 0x4EB, 0x407, 0x494, 0x4FA}),
+        )
+        self.assertTrue(
+            all(
+                state["verification"]["transport"] == "wireless_mqtt"
+                for state in snapshot.feedback_states
+            )
+        )
+        self.assertEqual(
+            self.client.subscriptions,
+            [("n7/n7-headunit/can/state", 1)],
+        )
+
+    def test_first_partial_live_vehicle_snapshot_does_not_wait_for_missing_ids(self) -> None:
+        self.client.emit(
+            "n7/n7-headunit/can/state",
+            {
+                "signals": [
+                    {
+                        "channel": "can1",
+                        "canId": "0x388",
+                        "frameType": "fd",
+                        "brs": True,
+                        "bytes": [0, 0, 0, 2, 1, 0, 89, 0],
+                    }
+                ]
+            },
+        )
+
+        started = time.perf_counter()
+        snapshot = self.transport.snapshot()
+
+        self.assertLess(time.perf_counter() - started, 0.05)
+        self.assertEqual(snapshot.observed_ids, frozenset({0x388}))
+
+    def test_stale_safety_signal_cannot_enter_snapshot_or_executor_bus(self) -> None:
+        bus = self.transport.bus(channel=1)
+        self.client.emit(
+            "n7/n7-headunit/can/state",
+            {
+                "schema": "n7-can-signals/v1",
+                "signals": [
+                    {
+                        "channel": "can1",
+                        "channelIndex": 1,
+                        "canId": "0x342",
+                        "frameType": "fd",
+                        "brs": True,
+                        "data": "00 00 00 01 00 00 00 00",
+                        "timestamp": round((time.time() - 60) * 1_000),
+                    }
+                ],
+            },
+        )
+        snapshot = self.transport.snapshot()
+        info = self.transport.public_info()["state_sync"]
+        self.assertEqual(info["capture_sequence"], 1)
+        self.assertEqual(info["stale_frames"], 1)
+        self.assertEqual(info["observed_frame_ids"], [])
+        self.assertEqual(snapshot.observed_ids, frozenset())
+        self.assertIsNone(bus.receive(0, include_fd=True))
+
+    def test_stale_non_safety_can1_frames_are_display_only(self) -> None:
+        bus = self.transport.bus(channel=1)
+        cached_timestamp = round((time.time() - 60) * 1_000)
+        self.client.emit(
+            "n7/n7-headunit/can/state",
+            {
+                "schema": "n7-can-signals/v1",
+                "signals": [
+                    {
+                        "channel": "can1",
+                        "canId": frame_id,
+                        "frameType": "fd",
+                        "brs": True,
+                        "data": data,
+                        "timestamp": cached_timestamp,
+                    }
+                    for frame_id, data in (
+                        ("0x388", "00 00 00 02 01 00 59 00"),
+                        ("0x41A", "00 5C 85 08 20 42 C1 FD"),
+                        ("0x42E", "11 64 32 03 90 02 00 C6"),
+                        ("0x3FF", "5B 09 FF 0F 32 61 04 12"),
+                    )
+                ],
+            },
+        )
+
+        snapshot = self.transport.snapshot()
+        self.assertEqual(
+            snapshot.observed_ids,
+            frozenset({0x388, 0x3FF, 0x41A, 0x42E}),
+        )
+        for state in snapshot.feedback_states:
+            verification = state["verification"]
+            self.assertFalse(verification["fresh"])
+            self.assertTrue(verification["display_only"])
+            self.assertFalse(verification["control_eligible"])
+            self.assertGreater(verification["cache_age_ms"], 50_000)
+        self.assertIsNone(bus.receive(0, include_fd=True))
+
+    def test_bus_publishes_only_canonical_frame_contract(self) -> None:
+        bus = self.transport.bus()
+        sent = bus.send(
+            0x431,
+            bytes.fromhex("10 00 00 00 00 00 00 00"),
+            is_fd=True,
+            bitrate_switch=True,
+        )
+        self.assertEqual(sent.channel, 1)
+        self.assertEqual(len(self.client.published), 1)
+        topic, raw_payload, qos, retain = self.client.published[0]
+        payload = json.loads(raw_payload)
+        self.assertEqual(topic, "n7/can_control")
+        self.assertEqual(qos, 1)
+        self.assertFalse(retain)
+        self.assertEqual(payload["schema"], MQTT_CAN_SCHEMA)
+        self.assertEqual(payload["arbitration_id"], 0x431)
+        self.assertEqual(payload["data_hex"], "10 00 00 00 00 00 00 00")
+        self.assertTrue(payload["is_fd"])
+        self.assertTrue(payload["bitrate_switch"])
+        with self.assertRaisesRegex(Exception, "approved CAN1 control set"):
+            bus.send(0x555, bytes(8), is_fd=True)
+        self.assertEqual(len(self.client.published), 1)
+
+    def test_can0_bus_publishes_only_classic_passenger_seat_control(self) -> None:
+        bus = self.transport.bus(channel=0)
+        sent = bus.send(0x6A0, bytes.fromhex("C7 01 64 00 F4 01 00 00"))
+        payload = json.loads(self.client.published[-1][1])
+        self.assertEqual(sent.channel, 0)
+        self.assertEqual(payload["channel"], 0)
+        self.assertFalse(payload["is_fd"])
+        with self.assertRaisesRegex(Exception, "approved CAN0 control set"):
+            bus.send(0x431, bytes(8))
+        with self.assertRaisesRegex(Exception, "requires classic CAN"):
+            bus.send(0x6A0, bytes.fromhex("C7 01 64 00 F4 01 00 00"),
+                     is_fd=True, bitrate_switch=True)
+        with self.assertRaisesRegex(Exception, "approved CAN0 control set"):
+            bus.send(0x300, bytes(8))
+        with self.assertRaisesRegex(Exception, "only STOP, MOVE, HEARTBEAT, or DYNAMIC"):
+            bus.send(0x6A0, bytes.fromhex("C7 02 61 00 00 00 00 00"))
+        with self.assertRaisesRegex(Exception, "target 0..1000"):
+            bus.send(0x6A0, bytes.fromhex("C7 03 64 00 E9 03 00 00"))
+        with self.assertRaisesRegex(Exception, "approved channel policy"):
+            self.transport.publish(
+                CanFrame(arbitration_id=0x431, data=bytes(8), channel=0)
+            )
+
+    def test_bus_receive_views_are_isolated_by_channel(self) -> None:
+        can0 = self.transport.bus(channel=0)
+        can1 = self.transport.bus(channel=1)
+        self.client.emit(
+            "n7/n7-headunit/can/state",
+            {
+                "signals": [
+                    {"channel": "can0", "canId": "0x302", "bytes": [0] * 8},
+                    {
+                        "channel": "can1",
+                        "canId": "0x342",
+                        "frameType": "fd",
+                        "bytes": [0] * 8,
+                    },
+                ]
+            },
+        )
+        self.assertEqual(can0.receive(0).arbitration_id, 0x302)
+        self.assertEqual(can1.receive(0, include_fd=True).arbitration_id, 0x342)
+        self.assertIsNone(can0.receive(0))
+        self.assertIsNone(can1.receive(0, include_fd=True))
+
+    def test_can0_status_bus_can_replay_latest_translated_ota_positions(self) -> None:
+        signals = []
+        for selector, value in {
+            1: (480 << 16) | 407,
+            2: (373 << 16) | 266,
+            3: (917 << 16) | 451,
+            4: (647 << 16) | 575,
+            5: 0x11,
+            6: 0x11,
+            7: 0x11,
+            8: 0x11,
+        }.items():
+            sequence = 0x40 + selector
+            signals.extend(
+                (
+                    {"channel": "can0", "canId": "0x6A0", "bytes":
+                     [0xC7, sequence, 0x60, selector, 0, 0, 0, 0]},
+                    {"channel": "can0", "canId": "0x6A2", "bytes":
+                     [0x7C, sequence, 0x60, 0, *value.to_bytes(4, "little")]},
+                )
+            )
+        self.client.emit("n7/n7-headunit/can/state", {"signals": signals})
+
+        bus = self.transport.bus(channel=0, replay_latest=True)
+        replayed = [bus.receive(0) for _ in range(4)]
+
+        self.assertEqual(
+            [frame.data[0] for frame in replayed if frame is not None],
+            [0, 1, 2, 3],
+        )
+        self.assertEqual(bus.receive(0).arbitration_id, 0x6A2)
+        self.assertIsNone(bus.receive(0))
+        self.assertEqual(
+            self.transport.public_info()["state_sync"]["observed_frame_ids_by_channel"]["0"],
+            ["0x302", "0x6A2"],
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/unit/test_mqtt_ota_seat_executor.py

@@ -0,0 +1,218 @@
+from __future__ import annotations
+
+import unittest
+from collections import deque
+from types import SimpleNamespace
+
+from cognitive_agent.application.mqtt_ota_seat_executor import (
+    MqttOtaSeatExecutor,
+)
+from cognitive_agent.infrastructure.can.gateway import CanFrame
+
+
+def _axis_frame(axis: int, value_x100: int, *, valid: bool = True) -> CanFrame:
+    flags = (1 << 3) if valid else 0
+    return CanFrame(
+        0x302,
+        bytes(
+            (
+                axis,
+                0,
+                flags,
+                0,
+                0,
+                value_x100 & 0xFF,
+                (value_x100 >> 8) & 0xFF,
+                0,
+            )
+        ),
+        channel=0,
+    )
+
+
+class _FakeOtaBus:
+    def __init__(self, initial_frames: list[CanFrame]) -> None:
+        self.frames = deque(initial_frames)
+        self.sent: list[CanFrame] = []
+        self.closed = False
+
+    def send(
+        self,
+        arbitration_id: int,
+        data: bytes,
+        *,
+        is_fd: bool = False,
+        bitrate_switch: bool = False,
+    ) -> CanFrame:
+        frame = CanFrame(
+            arbitration_id,
+            bytes(data),
+            channel=0,
+            is_fd=is_fd,
+            bitrate_switch=bitrate_switch,
+        )
+        self.sent.append(frame)
+        opcode = data[2]
+        job_state = (
+            1 | (4 << 4) | (9 << 8)
+            if opcode == 0x66
+            else (1 | (3 << 4) | (7 << 8))
+            if opcode in {0x64, 0x65}
+            else (1 << 1) | (1 << 2)
+        )
+        self.frames.append(
+            CanFrame(
+                0x6A2,
+                bytes((0x7C, data[1], opcode, 0))
+                + job_state.to_bytes(4, "little"),
+                channel=0,
+            )
+        )
+        if opcode == 0x64:
+            target_x100 = int.from_bytes(data[4:8], "little") * 10
+            self.frames.append(_axis_frame(data[3], target_x100))
+        return frame
+
+    def receive(self, _timeout_ms: int, *, include_fd: bool = False) -> CanFrame | None:
+        del include_fd
+        return self.frames.popleft() if self.frames else None
+
+    def close(self) -> None:
+        self.closed = True
+
+
+class _StatusExecutor:
+    def read_physical_state(self) -> dict[str, object]:
+        return {"position": {}, "complete": False}
+
+    def _capture_physical_state(
+        self,
+        _bus: _FakeOtaBus,
+        _results: list[dict[str, object]],
+    ) -> dict[str, object]:
+        return {"position": {}, "complete": True, "missing": []}
+
+
+def _function_config(capability: str, parameters: dict[str, object]) -> dict[str, object]:
+    return {
+        "metadata": {"request_id": "req-mqtt-ota-seat"},
+        "spec": {
+            "operations": [
+                {
+                    "id": "operation-1",
+                    "capability": capability,
+                    "target": {"zone": "front_right", "instance": "passenger"},
+                    "parameters": parameters,
+                }
+            ]
+        },
+    }
+
+
+class MqttOtaSeatExecutorTests(unittest.TestCase):
+    def test_absolute_move_uses_runtime_move_and_fresh_position_confirmation(self) -> None:
+        bus = _FakeOtaBus([_axis_frame(0, 4_000)])
+        executor = MqttOtaSeatExecutor(  # type: ignore[arg-type]
+            _StatusExecutor(),
+            lambda: bus,
+        )
+        plan = {
+            "spec": {
+                "commands": [
+                    {
+                        "operation_ref": "operation-1",
+                        "message": "T2G_Seat_Move_Command_300",
+                        "signals": {"Opcode": 1, "Motor_Selector": 0},
+                        "completion": {
+                            "value": 5_000,
+                            "tolerance": 100,
+                            "timeout_ms": 1_000,
+                        },
+                    }
+                ]
+            }
+        }
+
+        report = executor.execute(
+            plan,
+            _function_config(
+                "seat.set_longitudinal_position",
+                {"position_pct": 50},
+            ),
+        )
+
+        self.assertEqual(report["spec"]["status"], "succeeded")
+        self.assertEqual(bus.sent[0].arbitration_id, 0x6A0)
+        self.assertEqual(bus.sent[0].data[2], 0x64)
+        self.assertEqual(bus.sent[0].data[3], 0)
+        self.assertEqual(int.from_bytes(bus.sent[0].data[4:8], "little"), 500)
+        self.assertEqual(
+            report["spec"]["results"][0]["telemetry"]["effective_position_pct"],
+            50,
+        )
+        self.assertTrue(bus.closed)
+
+    def test_legacy_zero_target_maps_to_move_not_homing(self) -> None:
+        bus = _FakeOtaBus([_axis_frame(3, 2_000)])
+        executor = MqttOtaSeatExecutor(  # type: ignore[arg-type]
+            _StatusExecutor(),
+            lambda: bus,
+        )
+        plan = {
+            "spec": {
+                "commands": [
+                    {
+                        "operation_ref": "operation-1",
+                        "message": "T2G_Seat_Move_Command_300",
+                        "signals": {"Opcode": 0x0B, "Motor_Selector": 3},
+                        "completion": {
+                            "value": 0,
+                            "tolerance": 100,
+                            "timeout_ms": 1_000,
+                        },
+                    }
+                ]
+            }
+        }
+
+        report = executor.execute(
+            plan,
+            _function_config("seat.set_legrest_height", {"position_pct": 0}),
+        )
+
+        self.assertEqual(report["spec"]["status"], "succeeded")
+        self.assertEqual(bus.sent[0].data[2], 0x64)
+        self.assertEqual(int.from_bytes(bus.sent[0].data[4:8], "little"), 0)
+        self.assertNotIn(0x61, [frame.data[2] for frame in bus.sent])
+        self.assertNotIn(0x62, [frame.data[2] for frame in bus.sent])
+
+    def test_wireless_thermal_command_fails_before_publish(self) -> None:
+        bus = _FakeOtaBus([])
+        executor = MqttOtaSeatExecutor(  # type: ignore[arg-type]
+            _StatusExecutor(),
+            lambda: bus,
+        )
+        plan = {
+            "spec": {
+                "commands": [
+                    {
+                        "operation_ref": "operation-1",
+                        "message": "T2G_Seat_Thermal_Control_29E",
+                        "signals": {},
+                    }
+                ]
+            }
+        }
+
+        report = executor.execute(
+            plan,
+            _function_config("seat.set_heating", {"state": "on", "level": 1}),
+        )
+
+        self.assertEqual(report["spec"]["status"], "failed")
+        self.assertIn("does not provide wireless thermal control", report["spec"]["results"][0]["message"])
+        self.assertEqual(bus.sent, [])
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/unit/test_native_can_feedback.py

@@ -54,6 +54,31 @@ class NativeCanFeedbackTests(unittest.TestCase):
         self.assertFalse(feedback_matches("indoor_light:on", feedback))
         self.assertTrue(feedback_matches("ambient_power:off", feedback))
 
+    def test_can1_matrix_rejects_reserved_ambient_color_values(self) -> None:
+        decoded = decode_feedback(
+            self.frame(0x42E, "11 64 32 03 90 02 00 C6")
+        )["domain_state"]["ambient_light"]
+
+        self.assertIsNone(decoded["front_color_index"])
+        self.assertIsNone(decoded["rear_color_index"])
+
+    def test_3ff_matrix_decodes_lighting_and_illuminance(self) -> None:
+        light = decode_feedback(
+            self.frame(0x3FF, "5B 09 FF 0F 32 61 04 12")
+        )["domain_state"]["interior_light"]
+
+        self.assertEqual(light["power"], "unknown")
+        self.assertEqual(light["footwell_power"], "off")
+        self.assertEqual(light["ambient_illuminance_lux"], 510)
+
+    def test_3f3_matrix_decodes_wall_and_ambient_switches(self) -> None:
+        decoded = decode_feedback(
+            self.frame(0x3F3, "00 00 00 00 00 00 00 84")
+        )["domain_state"]
+
+        self.assertEqual(decoded["interior_light"]["wall_light_power"], "on")
+        self.assertEqual(decoded["ambient_light"]["power"], "on")
+
     def test_driver_seat_feedback_uses_0x4fa_not_0x42a(self) -> None:
         passive_feedback = self.frame(0x4FA, "0980aa0000810000")
         passive_driver = decode_feedback(passive_feedback)["actuator_state"]["driver"]

tests/unit/test_vehicle_state_monitor.py

@@ -0,0 +1,209 @@
+from __future__ import annotations
+
+import threading
+import time
+import unittest
+from collections import deque
+from pathlib import Path
+from types import SimpleNamespace
+
+from cognitive_agent.application.seat_service import SeatDemoService
+from cognitive_agent.application.vehicle_state_monitor import (
+    OBSERVABLE_IDS,
+    REQUIRED_UI_IDS,
+    VehicleStateMonitor,
+    VehicleStateSnapshot,
+)
+from cognitive_agent.infrastructure.can.gateway import (
+    CanFrame,
+    CanGatewayError,
+    ZlgChannelConfig,
+)
+
+REPOSITORY_ROOT = Path(__file__).resolve().parents[2]
+
+
+class _FakeBus:
+    def __init__(self, frames: list[CanFrame]) -> None:
+        self._frames = deque(frames)
+        self._condition = threading.Condition()
+
+    def push(self, frame: CanFrame) -> None:
+        with self._condition:
+            self._frames.append(frame)
+            self._condition.notify_all()
+
+    def receive(self, timeout_ms: int, *, include_fd: bool = False) -> CanFrame | None:
+        if not include_fd:
+            raise AssertionError("vehicle monitor must receive classic CAN and CAN FD")
+        with self._condition:
+            if not self._frames:
+                self._condition.wait(max(0, timeout_ms) / 1000)
+            return self._frames.popleft() if self._frames else None
+
+
+class _FakeBridge:
+    def __init__(self, bus: _FakeBus) -> None:
+        self.bus = bus
+        self.closed = False
+
+    def channel_bus(self, channel: int) -> _FakeBus:
+        if channel != 1:
+            raise AssertionError("vehicle monitor must stay on CH1")
+        return self.bus
+
+    def close(self) -> None:
+        self.closed = True
+
+
+class _FakeSettings:
+    channel = 1
+    feedback_timeout_ms = 100
+
+    def __init__(self, bus: _FakeBus) -> None:
+        self.bus = bus
+        self.bridge_instance = _FakeBridge(bus)
+        self.monitor_only: bool | None = None
+
+    def channel_config(self) -> ZlgChannelConfig:
+        return ZlgChannelConfig(channel=1, termination_enabled=False)
+
+    def bridge(
+        self,
+        channels: list[ZlgChannelConfig],
+        *,
+        monitor_only: bool = False,
+    ) -> _FakeBridge:
+        if len(channels) != 1:
+            raise AssertionError("vehicle monitor must own exactly one channel")
+        self.monitor_only = monitor_only
+        if channels[0].receive_ids != tuple(sorted(OBSERVABLE_IDS)):
+            raise AssertionError("vehicle monitor must filter to observable identifiers")
+        return self.bridge_instance
+
+
+def _frame(frame_id: int, data: bytes | None = None) -> CanFrame:
+    return CanFrame(
+        frame_id,
+        data or bytes(8),
+        channel=1,
+        is_fd=True,
+        bitrate_switch=True,
+    )
+
+
+def _baseline_frames() -> list[CanFrame]:
+    gear_p = bytearray(8)
+    gear_p[3] = 1
+    return [
+        _frame(0x342, bytes(gear_p)),
+        _frame(0x4EB, bytes.fromhex("0700000000000000")),
+        _frame(0x407),
+        _frame(0x4FA),
+        _frame(0x494),
+    ]
+
+
+class VehicleStateMonitorTests(unittest.TestCase):
+    def test_persistent_monitor_returns_cached_state_without_reopening_adapter(self) -> None:
+        bus = _FakeBus(_baseline_frames())
+        settings = _FakeSettings(bus)
+        monitor = VehicleStateMonitor(settings, reconnect_delay_s=0.01)  # type: ignore[arg-type]
+        self.addCleanup(monitor.close)
+
+        first = monitor.snapshot()
+        started = time.perf_counter()
+        second = monitor.snapshot()
+        cached_latency_s = time.perf_counter() - started
+
+        self.assertEqual(first.observed_ids, REQUIRED_UI_IDS)
+        self.assertEqual(second.observed_ids, REQUIRED_UI_IDS)
+        self.assertLess(cached_latency_s, 0.05)
+        self.assertTrue(settings.monitor_only)
+        self.assertEqual(monitor.public_info()["mode"], "persistent_monitor")
+
+    def test_monitor_updates_sequence_for_each_new_feedback_frame(self) -> None:
+        bus = _FakeBus(_baseline_frames())
+        monitor = VehicleStateMonitor(
+            _FakeSettings(bus),  # type: ignore[arg-type]
+            reconnect_delay_s=0.01,
+        )
+        self.addCleanup(monitor.close)
+        baseline = monitor.snapshot()
+
+        gear_d = bytearray(8)
+        gear_d[3] = 4
+        bus.push(_frame(0x342, bytes(gear_d)))
+        deadline = time.monotonic() + 0.5
+        updated = baseline
+        while updated.capture_sequence == baseline.capture_sequence:
+            if time.monotonic() >= deadline:
+                self.fail("monitor did not consume the new gear frame")
+            time.sleep(0.005)
+            updated = monitor.snapshot()
+
+        gear = next(
+            state["vehicle_safety"]["gear"]
+            for state in updated.feedback_states
+            if state["frame_id"] == "0x342"
+        )
+        self.assertEqual(gear, "D")
+
+    def test_monitor_surfaces_adapter_open_failure(self) -> None:
+        settings = _FakeSettings(_FakeBus([]))
+
+        def fail_bridge(*_args: object, **_kwargs: object) -> _FakeBridge:
+            raise RuntimeError("adapter open failed")
+
+        settings.bridge = fail_bridge  # type: ignore[method-assign]
+        monitor = VehicleStateMonitor(settings, reconnect_delay_s=0.01)  # type: ignore[arg-type]
+        self.addCleanup(monitor.close)
+
+        with self.assertRaisesRegex(CanGatewayError, "adapter open failed"):
+            monitor.snapshot()
+
+    def test_service_merges_a_cached_monitor_snapshot(self) -> None:
+        service = SeatDemoService(REPOSITORY_ROOT)
+        gear_state = {
+            "source": "physical_can_ch1",
+            "channel": 1,
+            "frame_id": "0x342",
+            "feedback_frame_id": "0x342",
+            "valid": True,
+            "captured_at": "2026-08-18T00:00:00Z",
+            "vehicle_safety": {"gear": "P"},
+            "verification": {
+                "authoritative": True,
+                "channel": 1,
+                "simulated": False,
+                "read_only": True,
+                "frame_id": "0x342",
+                "payload_size": 8,
+            },
+        }
+        service.vehicle_can_settings = SimpleNamespace(
+            state_configured=True,
+            backend="zlgcan-linux",
+        )
+        service._vehicle_state_monitor = SimpleNamespace(
+            snapshot=lambda: VehicleStateSnapshot(
+                feedback_states=(gear_state,),
+                observed_ids=REQUIRED_UI_IDS,
+                captured_at="2026-08-18T00:00:00Z",
+                capture_sequence=42,
+            )
+        )
+
+        result = service._synchronize_vehicle_state_once(
+            "conv-monitor-test",
+            "denza_n7",
+        )
+
+        self.assertEqual(result["capture_sequence"], 42)
+        self.assertEqual(result["domain_state"]["vehicle_status"]["gear"], "P")
+        self.assertTrue(result["complete"])
+        self.assertTrue(result["body_state_complete"])
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/unit/test_zlgcan_linux_bridge.py

@@ -0,0 +1,143 @@
+from __future__ import annotations
+
+import io
+import os
+import sys
+import tempfile
+import unittest
+from pathlib import Path
+from unittest.mock import Mock, patch
+
+from cognitive_agent.infrastructure.can.gateway import (
+    ZlgCanBridgeProcess,
+    ZlgChannelConfig,
+)
+from cognitive_agent.infrastructure.can.hardware import VehicleCanSettings
+from cognitive_agent.infrastructure.can.zlgcan_linux_bridge import (
+    EXPECTED_ABI_SIZES,
+    Driver,
+    _acceptance_filters,
+    _verified_init,
+    abi_sizes,
+)
+
+REPOSITORY_ROOT = Path(__file__).resolve().parents[2]
+
+
+class LinuxZlgBridgeTests(unittest.TestCase):
+    def test_ctypes_layout_matches_vendor_packed_abi(self) -> None:
+        self.assertEqual(abi_sizes(), EXPECTED_ABI_SIZES)
+
+    def test_verified_60mhz_timing_matches_can_dev_baseline(self) -> None:
+        init = _verified_init(
+            {
+                "arbitration_bitrate": 500_000,
+                "data_bitrate": 2_000_000,
+                "can_fd_iso": True,
+            }
+        )
+        self.assertEqual(init.clk, 60_000_000)
+        self.assertEqual(init.mode, 0)
+        self.assertEqual(
+            (init.aset.tseg1, init.aset.tseg2, init.aset.sjw, init.aset.brp),
+            (14, 3, 2, 5),
+        )
+        self.assertEqual(
+            (init.dset.tseg1, init.dset.tseg2, init.dset.sjw, init.dset.brp),
+            (10, 2, 2, 1),
+        )
+        with self.assertRaisesRegex(ValueError, "locked"):
+            _verified_init(
+                {"arbitration_bitrate": 1_000_000, "data_bitrate": 4_000_000}
+            )
+
+    def test_passive_state_filter_uses_exact_standard_identifiers(self) -> None:
+        frame_ids = frozenset({0x342, 0x407, 0x4EB})
+        filters = _acceptance_filters({"receive_ids": frame_ids})
+
+        self.assertEqual(filters.size, 3 * 12)
+        self.assertEqual(
+            [
+                (
+                    filters.table[index].type,
+                    filters.table[index].sid,
+                    filters.table[index].eid,
+                )
+                for index in range(3)
+            ],
+            [(0, 0x342, 0x342), (0, 0x407, 0x407), (0, 0x4EB, 0x4EB)],
+        )
+
+    def test_channel_config_serializes_receive_filter_only_when_requested(self) -> None:
+        filtered = ZlgChannelConfig(channel=1, receive_ids=(0x342, 0x4EB))
+        unfiltered = ZlgChannelConfig(channel=1)
+
+        self.assertEqual(filtered.public()["receive_ids"], [0x342, 0x4EB])
+        self.assertNotIn("receive_ids", unfiltered.public())
+
+    def test_monitor_only_rejects_send_before_touching_sdk(self) -> None:
+        driver = object.__new__(Driver)
+        driver.monitor_only = True
+        driver.configs = {1: {"channel": 1, "frame_format": "can_fd"}}
+        driver.sdk = Mock()
+
+        with self.assertRaisesRegex(PermissionError, "monitor-only"):
+            driver.send(
+                1,
+                0x123,
+                bytes.fromhex("0001020304050607"),
+                is_fd=True,
+                bitrate_switch=True,
+            )
+
+        driver.sdk.VCI_TransmitFD.assert_not_called()
+        driver.sdk.VCI_Transmit.assert_not_called()
+
+    def test_linux_state_can_be_ready_while_transmit_stays_locked(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            library = Path(directory) / "libusbcanfd.so"
+            library.write_bytes(b"test")
+            environment = {
+                "COGNITIVE_AGENT_VEHICLE_CAN_ENABLED": "true",
+                "COGNITIVE_AGENT_VEHICLE_CAN_BACKEND": "zlgcan-linux",
+                "COGNITIVE_AGENT_VEHICLE_CAN_CHANNEL": "1",
+                "COGNITIVE_AGENT_VEHICLE_CAN_REQUIRED_CHANNEL": "1",
+                "COGNITIVE_AGENT_ZLGCAN_PYTHON": sys.executable,
+                "COGNITIVE_AGENT_ZLGCAN_LINUX_LIBRARY": str(library),
+            }
+            with patch.dict(os.environ, environment, clear=True):
+                settings = VehicleCanSettings.from_env(REPOSITORY_ROOT)
+                self.assertEqual(settings.device_type, 33)
+                self.assertTrue(settings.state_configured)
+                self.assertFalse(settings.configured)
+                self.assertTrue(settings.bridge_script.name.endswith("linux_bridge.py"))
+                self.assertTrue(settings.public_info()["state_configured"])
+
+    def test_process_passes_monitor_and_trace_flags_to_bridge(self) -> None:
+        process = Mock()
+        process.stdout = io.StringIO('{"ok":true,"event":"ready"}\n')
+        process.stderr = io.StringIO()
+        process.stdin = io.StringIO()
+        process.poll.return_value = 0
+        with patch(
+            "cognitive_agent.infrastructure.can.gateway.subprocess.Popen",
+            return_value=process,
+        ) as popen:
+            bridge = ZlgCanBridgeProcess(
+                python_executable=Path(sys.executable),
+                bridge_script=Path("bridge.py"),
+                dll_path=Path("libusbcanfd.so"),
+                device_type=33,
+                device_index=0,
+                channels=[ZlgChannelConfig(channel=1, termination_enabled=False)],
+                monitor_only=True,
+                trace_all=True,
+            )
+            command = popen.call_args.args[0]
+            self.assertIn("--monitor-only", command)
+            self.assertIn("--trace-all", command)
+            bridge.close()
+
+
+if __name__ == "__main__":
+    unittest.main()