(function () {
  "use strict";

  const STORAGE_KEY = "cognitive-agent.ir-toy-console.v5";
  const SLOT_CATALOG_MIGRATION_KEY = "cognitive-agent.gscu-slot-catalog-migrated.v1";
  const MODE_KEY = "cognitive-agent.extension-mode";
  const CONVERSATION_KEY = "cognitive-agent.conversation-id";
  const SLOT_MIN = 1;
  const SLOT_MAX = 248;
  const ACTION_PAGE_SIZE = 6;
  const HISTORY_LIMIT = 40;
  const MAX_PLAN_STEPS = 12;
  const MIN_PLAN_DELAY_MS = 1;
  const MAX_PLAN_DELAY_MS = 30000;
  const MAX_TOTAL_PLAN_DELAY_MS = 60000;
  const HEALTH_POLL_INTERVAL_MS = 3000;
  const HEALTH_REQUEST_TIMEOUT_MS = 5000;
  const NFC_POLL_INTERVAL_MS = 700;
  const LEGACY_PROFILE_KEY = "ir-lab-profiles-v2";
  const LEGACY_PROFILE_BRIDGE_URLS = [
    "http://localhost:3001/n7web-profile-bridge.html",
    "http://127.0.0.1:3001/n7web-profile-bridge.html",
  ];

  const $ = (selector, root = document) => root.querySelector(selector);
  const $$ = (selector, root = document) => [...root.querySelectorAll(selector)];

  function rgbToHsl(red, green, blue) {
    const r = red / 255;
    const g = green / 255;
    const b = blue / 255;
    const max = Math.max(r, g, b);
    const min = Math.min(r, g, b);
    const lightness = (max + min) / 2;
    const delta = max - min;
    if (!delta) return [0, 0, lightness];
    const saturation = delta / (1 - Math.abs(2 * lightness - 1));
    let hue;
    if (max === r) hue = ((g - b) / delta) % 6;
    else if (max === g) hue = (b - r) / delta + 2;
    else hue = (r - g) / delta + 4;
    return [((hue * 60) + 360) % 360, saturation, lightness];
  }

  function hslToRgb(hue, saturation, lightness) {
    const chroma = (1 - Math.abs(2 * lightness - 1)) * saturation;
    const section = hue / 60;
    const intermediate = chroma * (1 - Math.abs((section % 2) - 1));
    let rgb = [0, 0, 0];
    if (section < 1) rgb = [chroma, intermediate, 0];
    else if (section < 2) rgb = [intermediate, chroma, 0];
    else if (section < 3) rgb = [0, chroma, intermediate];
    else if (section < 4) rgb = [0, intermediate, chroma];
    else if (section < 5) rgb = [intermediate, 0, chroma];
    else rgb = [chroma, 0, intermediate];
    const match = lightness - chroma / 2;
    return rgb.map((channel) => Math.round((channel + match) * 255));
  }

  function parseCssRgb(value) {
    const color = String(value || "").trim();
    const shortHex = color.match(/^#([\da-f])([\da-f])([\da-f])$/i);
    if (shortHex) return shortHex.slice(1).map((channel) => parseInt(channel + channel, 16));
    const hex = color.match(/^#([\da-f]{2})([\da-f]{2})([\da-f]{2})$/i);
    if (hex) return hex.slice(1).map((channel) => parseInt(channel, 16));
    const rgb = color.match(/^rgba?\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/i);
    return rgb ? rgb.slice(1).map(Number) : null;
  }

  function createThemedPetDataUrl(sourceImage, accentColor) {
    const accent = parseCssRgb(accentColor);
    if (!accent || !sourceImage.naturalWidth || !sourceImage.naturalHeight) return "";
    const [targetHue] = rgbToHsl(...accent);
    const canvas = document.createElement("canvas");
    canvas.width = sourceImage.naturalWidth;
    canvas.height = sourceImage.naturalHeight;
    const context = canvas.getContext("2d", { willReadFrequently: true });
    if (!context) return "";
    context.drawImage(sourceImage, 0, 0);
    const imageData = context.getImageData(0, 0, canvas.width, canvas.height);
    const { data } = imageData;
    for (let index = 0; index < data.length; index += 4) {
      if (data[index + 3] === 0) continue;
      const red = data[index];
      const green = data[index + 1];
      const blue = data[index + 2];
      const maximum = Math.max(red, green, blue);
      const minimum = Math.min(red, green, blue);
      const saturation = maximum ? (maximum - minimum) / maximum : 0;
      const blueDominance = blue - Math.max(red, green);
      // Only the deliberately saturated blue apparel is themed. The gray-blue fur stays intact.
      if (blueDominance < 24 || saturation < 0.32) continue;
      const [, sourceSaturation, lightness] = rgbToHsl(red, green, blue);
      const themed = hslToRgb(targetHue, sourceSaturation, lightness);
      [data[index], data[index + 1], data[index + 2]] = themed;
    }
    context.putImageData(imageData, 0, 0);
    return canvas.toDataURL("image/png");
  }

  function preset(key, name, aliases, category = "custom", risk = "low", visual = null) {
    return { key, name, aliases, category, risk, visual };
  }

  const TOY_TYPES = {
    light: {
      label: "灯光类玩具",
      shortLabel: "灯光",
      icon: "lightbulb",
      color: "#eab858",
      description: "颜色、亮灭与闪烁",
      presets: [
        preset("on", "开启", ["打开", "开灯"], "power"),
        preset("off", "关闭", ["关掉", "关灯", "熄灭"], "power"),
        preset("red", "红色灯光", ["红灯", "变红", "红色"], "color", "low", "#ef6267"),
        preset("green", "绿色灯光", ["绿灯", "变绿", "绿色"], "color", "low", "#48b982"),
        preset("blue", "蓝色灯光", ["蓝灯", "变蓝", "蓝色"], "color", "low", "#4f7fd2"),
        preset("white", "白色灯光", ["白灯", "白色"], "color", "low", "#d9d5c8"),
        preset("fast_flash", "快速闪烁", ["快闪", "快速闪灯"], "effect"),
        preset("slow_flash", "慢速闪烁", ["慢闪", "慢速闪灯"], "effect"),
        preset("warm", "暖色灯光", ["暖光", "暖色"], "color", "low", "#f0a958"),
        preset("brightness_up", "亮度增加", ["调亮", "亮一点"], "effect"),
        preset("brightness_down", "亮度降低", ["调暗", "暗一点"], "effect"),
        preset("breath", "呼吸灯效", ["呼吸灯", "呼吸闪烁"], "effect"),
      ],
    },
    sound: {
      label: "声音类玩具",
      shortLabel: "声音",
      icon: "volume-2",
      color: "#658bd5",
      description: "播放、音量与切换",
      presets: [
        preset("on", "开启", ["打开", "启动"], "power"),
        preset("off", "关闭", ["关掉", "停止播放"], "power"),
        preset("play_pause", "播放 / 暂停", ["播放", "暂停"], "sound"),
        preset("volume_up", "音量加", ["大声一点", "调高音量"], "sound"),
        preset("volume_down", "音量减", ["小声一点", "调低音量"], "sound"),
        preset("next", "下一首", ["下一个声音"], "sound"),
        preset("previous", "上一首", ["上一个声音"], "sound"),
        preset("mode", "模式切换", ["换个模式"], "effect"),
        preset("mute", "静音", ["不要声音", "关闭声音"], "sound"),
        preset("loop", "循环播放", ["单曲循环", "循环"], "sound"),
        preset("random", "随机播放", ["随机切换"], "sound"),
        preset("stop", "停止播放", ["停止", "停止声音"], "sound"),
      ],
    },
    action: {
      label: "动作类玩具",
      shortLabel: "动作",
      icon: "car-front",
      color: "#db7468",
      description: "移动、转向与表演",
      presets: [
        preset("on", "开启", ["打开", "启动"], "power"),
        preset("off", "关闭", ["关掉", "关闭玩具"], "power"),
        preset("forward", "前进", ["向前", "往前走"], "motion", "high"),
        preset("backward", "后退", ["向后", "倒退"], "motion", "high"),
        preset("left", "左转", ["向左", "左拐"], "direction", "high"),
        preset("right", "右转", ["向右", "右拐"], "direction", "high"),
        preset("stop", "停止", ["停下", "不要动"], "motion"),
        preset("perform", "表演动作", ["表演", "做动作"], "effect", "medium"),
        preset("speed_up", "速度增加", ["加速", "快一点"], "motion", "high"),
        preset("speed_down", "速度降低", ["减速", "慢一点"], "motion"),
        preset("spin", "原地旋转", ["转圈", "旋转"], "direction", "medium"),
        preset("dance", "舞蹈动作", ["跳舞", "舞蹈"], "effect", "medium"),
      ],
    },
    doll: {
      label: "玩偶类玩具",
      shortLabel: "玩偶",
      icon: "bot",
      color: "#cb86a4",
      description: "语音、舞蹈与互动",
      presets: [
        preset("on", "开启", ["打开", "唤醒"], "power"),
        preset("off", "关闭", ["关掉", "休息"], "power"),
        preset("speak", "说话", ["讲句话", "发声"], "sound"),
        preset("sing", "唱歌", ["唱一首歌"], "sound"),
        preset("dance", "跳舞", ["舞蹈"], "effect", "medium"),
        preset("wave", "挥手", ["招手"], "motion"),
        preset("interact", "互动", ["陪我玩", "互动一下"], "effect"),
        preset("stop", "停止", ["停下", "停止动作"], "motion"),
        preset("laugh", "笑声", ["笑一下", "开心"], "sound"),
        preset("story", "讲故事", ["故事", "讲个故事"], "sound"),
        preset("repeat", "复读", ["重复说", "跟我说"], "sound"),
        preset("sleep", "睡眠模式", ["睡觉", "休眠"], "effect"),
      ],
    },
    mechanical: {
      label: "机械类玩具",
      shortLabel: "机械",
      icon: "cog",
      color: "#758e94",
      description: "升降、伸缩与旋转",
      presets: [
        preset("on", "开启", ["打开", "启动"], "power"),
        preset("off", "关闭", ["关掉", "停止设备"], "power"),
        preset("up", "上升", ["升高", "向上"], "motion", "medium"),
        preset("down", "下降", ["降低", "向下"], "motion", "medium"),
        preset("extend", "伸出", ["向外伸", "展开"], "motion", "medium"),
        preset("retract", "收回", ["缩回", "收起"], "motion", "medium"),
        preset("clockwise", "正转", ["顺时针", "正向旋转"], "direction", "medium"),
        preset("counterclockwise", "反转", ["逆时针", "反向旋转"], "direction", "medium"),
        preset("stop", "停止", ["停下", "急停"], "motion"),
        preset("speed_up", "速度增加", ["加速", "快一点"], "motion", "medium"),
        preset("speed_down", "速度降低", ["减速", "慢一点"], "motion"),
        preset("home", "复位", ["回到原位", "归位"], "motion", "medium"),
      ],
    },
    other: {
      label: "其他玩具",
      shortLabel: "其他",
      icon: "gamepad-2",
      color: "#579a88",
      description: "通用自定义功能",
      presets: [
        preset("on", "开启", ["打开", "启动"], "power"),
        preset("off", "关闭", ["关掉", "停止"], "power"),
        preset("function_1", "功能一", ["第一个功能"]),
        preset("function_2", "功能二", ["第二个功能"]),
        preset("function_3", "功能三", ["第三个功能"]),
        preset("function_4", "功能四", ["第四个功能"]),
        preset("function_5", "功能五", ["第五个功能"]),
        preset("function_6", "功能六", ["第六个功能"]),
        preset("function_7", "功能七", ["第七个功能"]),
        preset("function_8", "功能八", ["第八个功能"]),
        preset("mode", "模式切换", ["换个模式"]),
        preset("reset", "复位", ["恢复", "回到初始状态"]),
      ],
    },
  };

  const steppedActions = (values, makeAction) => values.map(makeAction);
  const percentSteps = [0, 25, 50, 75, 100];

  const VEHICLE_DEVICES = [
    {
      id: "passenger-seat",
      name: "副驾座椅",
      code: "SEAT · CH0 T2G CAN",
      channel: "CH0",
      icon: "armchair",
      parameters: ["通风 0–3 档", "加热 0–2 档", "水平 0–100%", "坐盆 0–100%", "靠背 95–163°", "腿托 95–167°"],
      actions: [
        ...steppedActions([1, 2, 3], (level) => ({ name: `副驾通风 ${level} 档`, command: `副驾座椅通风${level}档` })),
        { name: "关闭副驾通风", command: "关闭副驾座椅通风" },
        ...steppedActions([1, 2], (level) => ({ name: `副驾加热 ${level} 档`, command: `副驾座椅加热${level}档` })),
        { name: "关闭副驾加热", command: "关闭副驾座椅加热" },
        ...["水平", "坐盆", "靠背", "腿托"].flatMap((axis) => steppedActions(percentSteps, (position) => ({
          name: `副驾${axis} ${position}%`,
          command: `副驾${axis}调到${position}%`,
        }))),
      ],
    },
    {
      id: "driver-seat",
      name: "主驾座椅",
      code: "SEAT · CH1 BODY CAN",
      channel: "CH1",
      icon: "armchair",
      parameters: ["通风 / 加热", "按摩强度 / 模式", "水平前后", "整椅高低", "靠背前后", "坐盆高低"],
      actions: [
        { name: "通风低档", command: "seat driver vent low" },
        { name: "通风高档", command: "seat driver vent high" },
        { name: "关闭通风", command: "seat driver vent off" },
        { name: "加热低档", command: "seat driver heat low" },
        { name: "加热高档", command: "seat driver heat high" },
        { name: "关闭加热", command: "seat driver heat off" },
        ...steppedActions(["weak", "medium", "strong"], (strength) => ({ name: `按摩 ${strength}`, command: `seat driver massage strength ${strength}` })),
        ...steppedActions(["wave", "pulse", "stretch", "slack", "relax"], (mode) => ({ name: `按摩 ${mode}`, command: `seat driver massage mode ${mode}` })),
        { name: "关闭按摩", command: "seat driver massage off" },
        ...["horizontal", "backrest"].flatMap((axis) => ["forward", "backward", "stop"].map((direction) => ({
          name: `${axis} ${direction}`,
          command: `seat driver ${axis} ${direction}${direction === "stop" ? "" : " 500"}`,
        }))),
        ...["height", "basin"].flatMap((axis) => ["up", "down", "stop"].map((direction) => ({
          name: `${axis} ${direction}`,
          command: `seat driver ${axis} ${direction}${direction === "stop" ? "" : " 500"}`,
        }))),
      ],
    },
    {
      id: "climate",
      name: "空调",
      code: "CLIMATE · CH1 CAN",
      channel: "CH1",
      icon: "snowflake",
      parameters: ["电源", "主 / 副驾 18–32℃", "风量 1–7", "出风模式", "内外循环", "前除霜"],
      actions: [
        { name: "开启空调", command: "ac on" },
        { name: "关闭空调", command: "ac off" },
        ...["driver", "passenger"].flatMap((zone) => steppedActions(
          Array.from({ length: 15 }, (_, index) => index + 18),
          (temperature) => ({ name: `${zone} ${temperature}℃`, command: `ac temp ${zone} ${temperature}` }),
        )),
        ...steppedActions(Array.from({ length: 7 }, (_, index) => index + 1), (level) => ({ name: `风量 ${level}`, command: `ac fan ${level}` })),
        ...steppedActions(["face", "feet", "face-feet", "defrost", "feet-defrost"], (mode) => ({ name: `出风 ${mode}`, command: `ac mode ${mode}` })),
        { name: "自动模式", command: "ac control auto" },
        { name: "手动模式", command: "ac control manual" },
        { name: "内循环", command: "ac cycle internal" },
        { name: "外循环", command: "ac cycle external" },
        { name: "开启前除霜", command: "ac defrost on" },
        { name: "关闭前除霜", command: "ac defrost off" },
      ],
    },
    {
      id: "roof",
      name: "遮阳帘",
      code: "ROOF · CH1 CAN",
      channel: "CH1",
      icon: "panels-top-left",
      parameters: ["位置 0–100%", "开启", "关闭", "暂停"],
      actions: steppedActions(Array.from({ length: 11 }, (_, index) => index * 10), (position) => ({
        name: `遮阳帘 ${position}%`,
        command: `shade position ${position}`,
      })),
    },
    {
      id: "interior-light",
      name: "车内灯光",
      code: "INTERIOR · CH1 CAN",
      channel: "CH1",
      icon: "lamp-ceiling",
      parameters: ["室内灯", "四区阅读灯", "氛围灯电源", "亮度 1–5", "色号 1–127"],
      actions: [
        { name: "室内灯开启", command: "light indoor on" },
        { name: "室内灯关闭", command: "light indoor off" },
        { name: "阅读灯开启", command: "light reading all on" },
        { name: "阅读灯关闭", command: "light reading all off" },
        { name: "氛围灯开启", command: "light ambient on" },
        { name: "氛围灯关闭", command: "light ambient off" },
        ...steppedActions([1, 2, 3, 4, 5], (level) => ({ name: `氛围亮度 ${level}`, command: `light ambient brightness ${level}` })),
        ...steppedActions([1, 16, 32, 48, 64, 80, 96, 112, 127], (color) => ({ name: `氛围色号 ${color}`, command: `light ambient color ${color}` })),
      ],
    },
    {
      id: "windows",
      name: "车窗",
      code: "WINDOW · CH1 CAN",
      channel: "CH1",
      icon: "gallery-vertical-end",
      parameters: ["左前 0–100%", "右前 0–100%", "左后 0–100%", "右后 0–100%", "开 / 关 / 停"],
      actions: ["front-left", "front-right", "rear-left", "rear-right"].flatMap((positionName) => steppedActions(percentSteps, (position) => ({
        name: `${positionName} ${position}%`,
        command: `window ${positionName} position ${position}`,
      }))),
    },
  ];

  const DEFAULT_DEVICE = {
    id: "toy-light-test",
    name: "灯光测试玩具",
    type: "light",
    aliases: ["灯光测试玩具", "灯光玩具", "玩具灯"],
    createdAt: new Date().toISOString(),
  };

  const state = loadState();
  const pages = Object.fromEntries(Object.keys(TOY_TYPES).map((key) => [key, 0]));
  let activeMode = "study";
  let selectedAddType = "light";
  let learning = freshLearningSession();
  let isPlanning = false;
  let isExecuting = false;
  let healthState = null;
  let healthRefreshPromise = null;
  let healthPollTimer = null;
  let healthToastRequested = false;
  let nfcSnapshot = {
    revision: -1,
    reader: { online: false, state: "starting", port: "auto", error: null },
    card: null,
    legacyProfiles: [],
  };
  let petCardSnapshot = {
    revision: -1,
    cards: [],
    publisher: {
      state: "stopped",
      topic: "n7/pet",
      burst_count: 3,
      burst_window_ms: 1000,
      burst_attempt_count: 0,
      burst_published_count: 0,
      active_pet_id: null,
    },
  };
  let selectedPetCardId = null;
  const petCardDrafts = new Map();
  let nfcPollTimer = null;
  let legacySameOriginChecked = false;
  let legacyMigrationCompleted = false;
  const legacyBridgeAttempts = new Set();
  let renderUnifiedExtensionView = null;
  let latestVehicleStateTurn = -1;
  let sharedTwinBand = null;
  let sharedTwinHome = null;
  let petTimer = null;
  let petBlinkTimer = null;
  let petBlinkResetTimer = null;
  let petTailTimer = null;
  let petTailFrame = null;
  let petPhraseIndex = 0;

  function uid(prefix) {
    if (globalThis.crypto?.randomUUID) return `${prefix}-${crypto.randomUUID()}`;
    return `${prefix}-${Date.now()}-${Math.random().toString(16).slice(2)}`;
  }

  function clone(value) {
    return JSON.parse(JSON.stringify(value));
  }

  function escapeHtml(value) {
    return String(value ?? "").replace(/[&<>'"]/g, (char) => ({
      "&": "&amp;",
      "<": "&lt;",
      ">": "&gt;",
      "'": "&#39;",
      '"': "&quot;",
    })[char]);
  }

  function delay(ms) {
    return new Promise((resolve) => window.setTimeout(resolve, ms));
  }

  function infraredSignalFromResponse(value) {
    if (!value || typeof value !== "object") return null;
    for (const [key, child] of Object.entries(value)) {
      if (["ir_data", "irData", "infraredData"].includes(key)) {
        if (typeof child === "string" && child.trim().length > 4) return child.trim();
        if (Array.isArray(child) && child.length) return JSON.stringify(child);
      }
      const nested = infraredSignalFromResponse(child);
      if (nested) return nested;
    }
    return null;
  }

  async function infraredFingerprint(signal) {
    const digest = await crypto.subtle.digest(
      "SHA-256",
      new TextEncoder().encode(signal),
    );
    return Array.from(new Uint8Array(digest))
      .slice(0, 6)
      .map((value) => value.toString(16).padStart(2, "0"))
      .join("")
      .toUpperCase();
  }

  function validSlot(value) {
    const slot = Number(value);
    return Number.isInteger(slot) && slot >= SLOT_MIN && slot <= SLOT_MAX;
  }

  function initialState() {
    return {
      version: 5,
      devices: [],
      capabilities: [],
      selectedDeviceByType: {},
      sessionStartedAt: null,
      settings: { actionDelayMs: 520 },
      history: [],
      lastProtocol: null,
      vehicleExecutions: {},
      infraredCommands: [],
    };
  }

  function loadState() {
    try {
      const saved = JSON.parse(localStorage.getItem(STORAGE_KEY) || "null");
      if (!saved || saved.version !== 5 || !Array.isArray(saved.devices)) {
        return initialState();
      }
      saved.capabilities = Array.isArray(saved.capabilities) ? saved.capabilities : [];
      const removedDefaultDevice = saved.devices.some((item) => item.id === DEFAULT_DEVICE.id);
      saved.devices = saved.devices.filter((item) => item.id !== DEFAULT_DEVICE.id);
      if (removedDefaultDevice) {
        saved.capabilities = saved.capabilities.filter((item) => item.deviceId !== DEFAULT_DEVICE.id);
        delete saved.selectedDeviceByType?.light;
      }
      saved.history = Array.isArray(saved.history) ? saved.history : [];
      saved.vehicleExecutions = saved.vehicleExecutions && typeof saved.vehicleExecutions === "object"
        ? saved.vehicleExecutions
        : {};
      saved.infraredCommands = Array.isArray(saved.infraredCommands)
        ? saved.infraredCommands.filter((item) => (
          validSlot(item?.slot)
          && (
            String(item?.name || "").trim()
            || normalizedInfraredNames(item?.object_names ?? item?.objectNames).length
            || normalizedInfraredNames(item?.action_names ?? item?.actionNames).length
          )
        )).map(normalizedInfraredSlotRecord)
        : [];
      saved.selectedDeviceByType = saved.selectedDeviceByType || {};
      saved.settings = { actionDelayMs: Number(saved.settings?.actionDelayMs) || 520 };
      // Learned capabilities are durable configuration; execution lamps, history,
      // and protocol feedback belong to one virtual run and must never survive a restart.
      saved.history = [];
      saved.lastProtocol = null;
      saved.vehicleExecutions = {};
      saved.sessionStartedAt = null;
      localStorage.setItem(STORAGE_KEY, JSON.stringify(saved));
      sessionStorage.removeItem(MODE_KEY);
      return saved;
    } catch (error) {
      console.warn("读取自扩展能力数据失败，已恢复默认状态。", error);
      return initialState();
    }
  }

  function saveState() {
    localStorage.setItem(STORAGE_KEY, JSON.stringify(state));
  }

  function seedPresets(device) {
    const type = TOY_TYPES[device.type] || TOY_TYPES.other;
    return type.presets.map((item) => ({
      id: uid("cap"),
      deviceId: device.id,
      key: item.key,
      name: item.name,
      aliases: [item.name, ...item.aliases],
      category: item.category,
      risk: item.risk,
      visual: item.visual,
      slot: null,
      status: "pending",
      verified: false,
      enabled: false,
      createdAt: new Date().toISOString(),
    }));
  }

  function freshLearningSession() {
    return {
      phase: "idle",
      draft: null,
      countdownTimer: null,
      abortController: null,
      tested: false,
      fingerprint: null,
    };
  }

  function deviceCapabilities(deviceId) {
    return state.capabilities.filter((item) => item.deviceId === deviceId);
  }

  function learnedCapabilities(deviceId = null) {
    return state.capabilities.filter((item) => (
      (!deviceId || item.deviceId === deviceId)
      && item.status === "learned"
      && item.verified
      && item.enabled !== false
      && validSlot(item.slot)
    ));
  }

  function allocateSlot() {
    const used = new Set(learnedCapabilities().map((item) => Number(item.slot)));
    for (let slot = SLOT_MIN; slot <= SLOT_MAX; slot += 1) {
      if (!used.has(slot)) return slot;
    }
    return null;
  }

  function selectedDeviceForType(typeKey) {
    const devices = state.devices.filter((item) => item.type === typeKey);
    const selectedId = state.selectedDeviceByType[typeKey];
    const selected = devices.find((item) => item.id === selectedId) || devices[0] || null;
    if (selected && selected.id !== selectedId) state.selectedDeviceByType[typeKey] = selected.id;
    return selected;
  }

  function buildShell() {
    const sidebar = $(".v2-sidebar");
    const mainPanel = $(".main-panel");
    const moduleSwitcher = $("#v2ModuleSwitcher");
    if (!sidebar || !mainPanel || !moduleSwitcher) return false;

    const extensionSidebar = document.createElement("section");
    extensionSidebar.className = "v2-sidebar-section v2-extension-sidebar";
    extensionSidebar.innerHTML = `
      <div class="v2-section-heading">
        <h2>控制台</h2>
      </div>
      <span class="v2-field-caption">工作模式</span>
      <div class="v2-extension-mode-switch" role="group" aria-label="工作模式">
        <button type="button" data-extension-mode="study"><i data-lucide="book-open-check"></i><span>学习模式</span></button>
        <button type="button" data-extension-mode="control"><i data-lucide="send"></i><span>控制模式</span></button>
      </div>
      <div class="v2-divider"></div>
      <span class="v2-field-caption">配置信息</span>
      <div class="v2-extension-config-stack">
        <div class="v2-extension-config-card" id="extensionVehicleCard" data-state="checking"><i data-lucide="car-front"></i><div><small>当前车型</small><strong>腾势 N7</strong></div><span id="extensionVehicleState">CHECK</span></div>
        <div class="v2-extension-config-card" id="extensionModelCard"><i data-lucide="sparkles"></i><div><small>推理模型</small><strong id="extensionModelName">模型检测中</strong></div><span id="extensionModelState">CHECK</span></div>
        <div class="v2-extension-config-card" id="extensionStudyHealth" data-state="checking"><i data-lucide="radio-tower"></i><div><small>红外学习器</small><strong id="extensionStudyHealthText">正在检查 GSCU1B</strong></div><span id="extensionStudyHealthState">CHECK</span></div>
      </div>
      <div class="v2-divider"></div>
      <span class="v2-field-caption">玩具信息</span>
      <div class="v2-extension-metrics">
        <div><i data-lucide="radio-tower"></i><span>已接入外设玩具</span><strong id="extensionHardwareCount">0</strong></div>
        <div><i data-lucide="badge-check"></i><span>已学习能力</span><strong id="extensionCapabilityCount">0</strong></div>
      </div>`;
    sidebar.insertBefore(extensionSidebar, $(".v2-sidebar-footer"));

    const extensionFooter = document.createElement("footer");
    extensionFooter.className = "v2-sidebar-footer v2-extension-footer";
    extensionFooter.innerHTML = `
      <span class="v2-live-dot"></span>
      <div><strong>自扩展控制链路</strong><small id="extensionConnectionText">正在检查 GSCU1B</small></div>
      <button type="button" id="extensionFooterRefresh" title="刷新连接" aria-label="刷新自扩展连接"><i data-lucide="refresh-cw"></i></button>`;
    sidebar.append(extensionFooter);

    const root = document.createElement("section");
    root.className = "v2-self-extension";
    root.id = "v2SelfExtension";
    root.setAttribute("aria-label", "自扩展工作台");
    root.innerHTML = `
      <section class="v2-extension-view v2-extension-study" data-extension-view="study">
        <header class="v2-extension-heading">
          <div class="v2-module-heading"><h1>外设玩具能力学习</h1></div>
          <div class="v2-extension-heading-actions">
            <button class="v2-extension-reset-action" type="button" id="extensionResetButton"><i data-lucide="rotate-ccw"></i>重置学习</button>
            <button type="button" data-add-type="light"><i data-lucide="plus"></i>添加玩具</button>
          </div>
        </header>
        <div class="v2-extension-hardware-grid" id="extensionHardwareGrid"></div>
      </section>
      <section class="v2-extension-view v2-extension-control" data-extension-view="control" hidden>
        <header class="v2-extension-heading">
          <div class="v2-module-heading"><h1>外设玩具与车端联动</h1></div>
        </header>
        <div class="v2-extension-command-row">
          <div class="v2-extension-composer">
            <textarea id="extensionUtterance" rows="1" maxlength="500" placeholder="例如：发出红光，然后打开车内阅读灯" aria-label="输入自扩展联动指令"></textarea>
            <button class="primary-action" type="button" id="extensionExecuteButton" aria-label="执行自扩展联动指令"><i data-lucide="play"></i><span>执行</span></button>
          </div>
          <aside class="v2-extension-execution-state" id="extensionExecutionState" data-state="idle">
            <span>执行情况</span><strong id="extensionRunTitle">等待指令</strong><small id="extensionRunNote">尚未生成联动计划</small>
            <div class="v2-extension-run-progress"><i id="extensionRunProgressBar"></i></div>
          </aside>
        </div>
        <div class="v2-extension-control-grid">
          <section class="v2-extension-action-board">
            <header><div><h2>玩具动作</h2></div><strong id="extensionLearnedTotal">0 项可执行</strong></header>
            <div class="v2-extension-learned-grid" id="extensionLearnedGrid"></div>
          </section>
          <section class="v2-extension-action-board">
            <header><div><h2>车端设备动作</h2></div><strong>同源安全编排</strong></header>
            <div class="v2-extension-vehicle-grid" id="extensionVehicleGrid"></div>
          </section>
        </div>
        <section class="v2-extension-twin-board" aria-label="整车孪生界面">
          <div class="v2-extension-twin-host" id="extensionTwinHost">
            <div class="v2-extension-twin-waiting"><i data-lucide="loader-circle"></i><span>正在挂载整车孪生界面</span></div>
          </div>
        </section>
        <div class="v2-extension-run-plan" id="extensionVehicleStateSummary" data-state="unknown">
          <span><i>CH0 / CH1</i>等待权威车端状态</span>
        </div>
        <div class="v2-extension-run-plan" id="extensionRunPlan" hidden></div>
      </section>
      <aside class="v2-extension-pet" id="extensionDesktopPet" data-mood="idle" aria-live="polite">
        <span class="v2-extension-pet-bubble" id="extensionPetBubble">嗨，我会陪你学习新能力</span>
        <button class="v2-extension-pet-body" id="extensionPetBody" type="button" aria-label="网页版桌宠，拖动可移动，点击可互动">
          <img class="v2-extension-pet-image" src="/assets/pets/self-extension-cat.png?v=3" alt="" draggable="false" />
          <canvas class="v2-extension-pet-entrance-canvas" width="512" height="512" aria-hidden="true"></canvas>
          <canvas class="v2-extension-pet-tail-canvas" width="512" height="512" aria-hidden="true"></canvas>
          <span class="v2-extension-pet-blink" aria-hidden="true">
            <i class="v2-extension-pet-blink-eye left"></i>
            <i class="v2-extension-pet-blink-eye right"></i>
          </span>
          <span class="v2-extension-pet-mouth-closed" aria-hidden="true"></span>
        </button>
      </aside>`;
    const homepageHeader = moduleSwitcher.closest(".v2-mode-rail") || moduleSwitcher;
    homepageHeader.insertAdjacentElement("afterend", root);

    buildDialogs();
    return true;
  }

  function buildDialogs() {
    const layer = document.createElement("div");
    layer.className = "v2-extension-dialog-layer";
    layer.innerHTML = `
      <dialog class="v2-extension-dialog" id="extensionAddDialog">
        <form id="extensionAddForm">
          <header><div><h2>添加外设玩具</h2></div><button type="button" data-close-extension-dialog="extensionAddDialog" aria-label="关闭"><i data-lucide="x"></i></button></header>
          <div class="v2-extension-type-chooser" id="extensionTypeChooser"></div>
          <label><span>玩具名称</span><input id="extensionHardwareName" maxlength="48" autocomplete="off" placeholder="例如：床头灯光玩具" required /></label>
          <div class="v2-extension-preset-preview"><span>将建立的预设动作</span><div id="extensionPresetPreview"></div></div>
          <button class="v2-extension-primary" type="submit">添加并开始学习</button>
        </form>
      </dialog>
      <dialog class="v2-extension-dialog v2-extension-learn-dialog" id="extensionLearnDialog">
        <header><div><h2 id="extensionLearnTitle">学习遥控动作</h2></div><button type="button" data-close-extension-dialog="extensionLearnDialog" aria-label="关闭"><i data-lucide="x"></i></button></header>
        <div class="v2-extension-learn-steps"><span data-extension-learn-step="1"><b>1</b>配置</span><i></i><span data-extension-learn-step="2"><b>2</b>接收</span><i></i><span data-extension-learn-step="3"><b>3</b>验证</span></div>
        <section class="v2-extension-learn-page" data-extension-learn-page="1">
          <div class="v2-extension-learn-target"><span id="extensionLearnIcon"><i data-lucide="radio"></i></span><div><small>目标玩具</small><strong id="extensionLearnDevice">--</strong></div><i data-lucide="arrow-right"></i><div><small>待学习动作</small><strong id="extensionLearnAction">--</strong></div></div>
          <div class="v2-extension-learn-fields">
            <label><span>说法与别名</span><input id="extensionLearnAliases" /></label>
            <label><span>风险级别</span><select id="extensionLearnRisk"><option value="low">低</option><option value="medium">中</option><option value="high">高</option></select></label>
            <label><span>红外槽位</span><input id="extensionLearnSlot" type="number" min="1" max="248" /></label>
          </div>
          <button class="v2-extension-primary" type="button" id="extensionContinueLearn">继续接收遥控信号</button>
        </section>
        <section class="v2-extension-learn-page v2-extension-learning-page" data-extension-learn-page="2" hidden>
          <div class="v2-extension-learn-animation" id="extensionLearnAnimation"><span><i data-lucide="radio-tower"></i></span><i></i><i></i></div>
          <h3 id="extensionLearnStatusTitle">准备接收遥控信号</h3><p id="extensionLearnStatusMessage">请将遥控器对准学习器并按一下对应按键。</p><strong id="extensionLearnCountdown">15</strong>
          <div class="v2-extension-dialog-actions"><button type="button" id="extensionCancelLearn">取消</button><button class="v2-extension-primary" type="button" id="extensionStartLearn">开始接收</button></div>
        </section>
        <section class="v2-extension-learn-page v2-extension-test-page" data-extension-learn-page="3" hidden>
          <span><i data-lucide="badge-check"></i></span><h3 id="extensionTestTitle">信号已捕获</h3><p id="extensionTestMessage">先发射测试，确认玩具有正确反应后再保存。</p>
          <div class="v2-extension-dialog-actions"><button type="button" id="extensionTestEmit">发射试一下</button><button class="v2-extension-primary" type="button" id="extensionConfirmLearn" disabled>确认并完成学习</button></div>
        </section>
      </dialog>
      <dialog class="v2-extension-dialog v2-extension-reset-dialog" id="extensionResetDialog">
        <header><div><h2>重置学习</h2></div><button type="button" data-close-extension-dialog="extensionResetDialog" aria-label="关闭"><i data-lucide="x"></i></button></header>
        <label><span>输入“清空”确认操作</span><input id="extensionResetConfirm" autocomplete="off" /></label>
        <button class="v2-extension-danger" type="button" id="extensionConfirmReset" disabled>擦除并重新开始</button>
      </dialog>
      <dialog class="v2-extension-dialog v2-gscu-tcp-dialog" id="extensionGscuTcpDialog">
        <header><div><h2>红外学习器 TCP 控制</h2></div><button type="button" data-close-extension-dialog="extensionGscuTcpDialog" aria-label="关闭"><i data-lucide="x"></i></button></header>
        <section class="v2-gscu-status" id="extensionGscuTcpStatus" data-state="checking"><i data-lucide="radio-tower"></i><div><strong>正在读取连接状态</strong><small>--</small></div><b>CHECK</b></section>
        <form id="extensionGscuTcpForm" class="v2-gscu-config-form">
          <label><span>本机监听 IP</span><input id="extensionGscuTcpHost" inputmode="decimal" maxlength="45" placeholder="0.0.0.0" aria-describedby="extensionGscuTcpHostHint" required /><small class="visually-hidden" id="extensionGscuTcpHostHint">填写 0.0.0.0 可监听所有网卡；模块端应填写这台 Linux 的实际局域网 IP。</small></label>
          <label><span>监听端口</span><input id="extensionGscuTcpPort" type="number" min="1" max="65535" value="4444" aria-describedby="extensionGscuTcpPortHint" required /><small class="visually-hidden" id="extensionGscuTcpPortHint">必须与 GSCU1B 自定义 TCP 服务器端口一致。</small></label>
          <button class="v2-extension-primary" type="submit" id="extensionGscuTcpApply">应用并开始监听</button>
        </form>
        <section class="v2-gscu-actions">
          <header><div><strong>TCP 动作调试</strong></div><label><span>红外槽位</span><input id="extensionGscuSlot" type="number" min="1" max="248" value="1" /></label><label><span>设备 ID</span><input id="extensionGscuDeviceId" maxlength="64" placeholder="toy-light-001" /></label><label><span>控制对象名称</span><input id="extensionGscuObjectNames" maxlength="240" placeholder="闪烁灯、闪光灯、闪灯玩具" /></label><label><span>执行动作</span><input id="extensionGscuActionNames" maxlength="240" placeholder="打开、开启、启动" /></label></header>
          <div class="v2-gscu-action-grid">
            <button type="button" data-gscu-action="info">查询设备</button>
            <button type="button" data-gscu-action="learn">开始学习</button>
            <button type="button" data-gscu-action="cancel">取消学习</button>
            <button type="button" data-gscu-action="emit">发射槽位</button>
            <button type="button" data-gscu-action="read">读取槽位</button>
            <button type="button" data-gscu-action="restart">软重启</button>
          </div>
          <details class="v2-gscu-advanced">
            <summary>高级动作</summary>
            <label><span>原始红外码</span><textarea id="extensionGscuIrData" rows="3" placeholder="粘贴 read 返回的 ir_data"></textarea></label>
            <button type="button" data-gscu-action="write">写入当前槽位</button>
            <label><span>WiFi 配网锁</span><select id="extensionGscuWifiLock"><option value="1">开启（1）</option><option value="0">关闭（0）</option></select></label>
            <button type="button" data-gscu-action="wifi-lock">设置配网锁</button>
            <label><span>原始 JSON</span><textarea id="extensionGscuRawCommand" rows="4" placeholder='例如 {"type":"info"}'></textarea></label>
            <button type="button" data-gscu-action="raw">发送原始 JSON</button>
            <label><span>恢复出厂确认</span><input id="extensionGscuDangerConfirm" autocomplete="off" placeholder="恢复出厂请输入 RESET_DEVICE" /></label>
            <div><button class="danger" type="button" data-gscu-action="erase">擦除全部红外码</button><button class="danger" type="button" data-gscu-action="reset">恢复出厂设置</button></div>
          </details>
          <section class="v2-gscu-command-catalog"><header><strong>已学习红外信号</strong></header><div id="extensionGscuNamedCommands"></div></section>
          <details class="v2-gscu-result" id="extensionGscuTcpResultDetails"><summary>JSON 调试结果</summary><pre id="extensionGscuTcpResult">等待操作</pre></details>
        </section>
      </dialog>
      <dialog class="v2-extension-dialog v2-pet-settings-dialog" id="extensionPetSettingsDialog" aria-labelledby="extensionPetSettingsTitle" aria-describedby="extensionPetSettingsDescription">
        <header><div><h2 id="extensionPetSettingsTitle">宠物设置</h2><p class="visually-hidden" id="extensionPetSettingsDescription">添加或编辑宠物资料；保存后可在 NFC 设备授权中绑定卡片。</p></div><button type="button" data-close-extension-dialog="extensionPetSettingsDialog" data-dialog-close aria-label="关闭宠物设置"><i data-lucide="x"></i></button></header>
        <div class="v2-pet-settings-body" id="extensionPetSettingsBody"></div>
        <footer class="v2-pet-settings-footnote"><i data-lucide="database"></i><span>宠物资料由后端永久保存，只有在此处手动删除才会移除。</span></footer>
      </dialog>
      <div class="v2-extension-toast-stack" id="extensionToastStack" aria-live="polite"></div>`;
    document.body.append(layer);
  }

  function openDialog(id) {
    const dialog = $(`#${id}`);
    if (dialog?.showModal) dialog.showModal();
    else dialog?.setAttribute("open", "");
  }

  function closeDialog(id) {
    const dialog = $(`#${id}`);
    if (dialog?.close) dialog.close();
    else dialog?.removeAttribute("open");
  }

  function showToast(message, type = "") {
    const toast = document.createElement("div");
    toast.className = `v2-extension-toast ${type}`.trim();
    toast.textContent = message;
    $("#extensionToastStack")?.append(toast);
    window.setTimeout(() => toast.remove(), 3800);
  }

  async function api(path, options = {}) {
    let response;
    try {
      response = await fetch(`/api/extension/${path}`, {
        credentials: "same-origin",
        ...options,
        headers: options.body
          ? { "Content-Type": "application/json", ...(options.headers || {}) }
          : options.headers,
      });
    } catch (_error) {
      throw new Error("无法连接自扩展服务。");
    }
    const payload = await response.json().catch(() => ({}));
    if (!response.ok || payload.success === false) {
      const error = new Error(payload.message || `自扩展请求失败（HTTP ${response.status}）`);
      error.payload = payload;
      throw error;
    }
    return payload;
  }

  function renderGscuTcpDialog(health = healthState || {}, refreshControls = true) {
    const status = $("#extensionGscuTcpStatus");
    if (!status) return;
    const connected = Boolean(health.connected || health.peer_connected);
    const listening = Boolean(health.listening);
    const listenHost = String(health.listen_host || "0.0.0.0");
    const listenPort = Number(health.port || 4444);
    if (refreshControls) {
      $("#extensionGscuTcpHost").value = listenHost;
      $("#extensionGscuTcpPort").value = Number.isInteger(listenPort) ? String(listenPort) : "4444";
    }
    status.dataset.state = connected ? "online" : listening ? "listening" : "offline";
    $("strong", status).textContent = connected
      ? "GSCU1B TCP 已连接"
      : listening
        ? "TCP 监听已就绪"
        : "TCP 监听尚未就绪";
    $("small", status).textContent = connected
      ? `${health.peer || "设备会话"} → ${health.listen || `${listenHost}:${listenPort}`}`
      : health.message || `等待 GSCU1B 接入 ${listenHost}:${listenPort}`;
    $("b", status).textContent = connected ? "READY" : listening ? "WAIT" : "OFFLINE";
    if (refreshControls) {
      renderGscuNamedCommands();
      syncGscuCommandNamesFromSlot();
    }
  }

  function namedInfraredCommands() {
    state.infraredCommands ||= [];
    return [...state.infraredCommands].sort((left, right) => Number(left.slot) - Number(right.slot));
  }

  function normalizedInfraredNames(value) {
    const values = Array.isArray(value)
      ? value
      : String(value || "").split(/[,，、;；|]+/);
    return [...new Set(values
      .map((item) => String(item || "").trim().slice(0, 48))
      .filter(Boolean))].slice(0, 24);
  }

  function normalizedInfraredDeviceId(value) {
    return String(value || "").trim().slice(0, 64);
  }

  function normalizedInfraredSlotRecord(item) {
    const objectNames = normalizedInfraredNames(item.object_names ?? item.objectNames);
    const actionNames = normalizedInfraredNames(item.action_names ?? item.actionNames);
    const legacyName = String(item.name || "").trim().slice(0, 48);
    return {
      slot: Number(item.slot),
      deviceId: normalizedInfraredDeviceId(item.device_id ?? item.deviceId),
      name: legacyName || `${objectNames[0] || "未命名对象"} · ${actionNames[0] || "未命名动作"}`,
      objectNames,
      actionNames: actionNames.length || objectNames.length ? actionNames : normalizedInfraredNames(legacyName),
      source: String(item.source || "tcp"),
      learnedAt: item.learned_at || item.learnedAt || null,
      updatedAt: item.updated_at || item.updatedAt || null,
    };
  }

  function infraredDeviceGroups() {
    const groups = new Map();
    namedInfraredCommands().forEach((command) => {
      const deviceId = normalizedInfraredDeviceId(command.deviceId);
      const key = deviceId || "";
      if (!groups.has(key)) {
        groups.set(key, { deviceId, objectNames: [], commands: [] });
      }
      const group = groups.get(key);
      group.commands.push(command);
      group.objectNames = normalizedInfraredNames([
        ...group.objectNames,
        ...command.objectNames,
      ]);
    });
    return [...groups.values()].sort((left, right) => {
      if (!left.deviceId) return 1;
      if (!right.deviceId) return -1;
      return left.deviceId.localeCompare(right.deviceId);
    });
  }

  function reconcileDevicesAndCapabilitiesFromSlots() {
    const configuredKeys = new Set();
    infraredDeviceGroups().filter((group) => group.deviceId).forEach((group) => {
      let device = state.devices.find((item) => item.id === group.deviceId);
      if (!device) {
        device = {
          id: group.deviceId,
          name: group.objectNames[0] || group.deviceId,
          type: "other",
          aliases: group.objectNames.length ? group.objectNames : [group.deviceId],
          toyNumber: null,
          cardUid: null,
          createdAt: new Date().toISOString(),
          source: "infrared_slot_catalog",
        };
        state.devices.push(device);
      } else {
        device.name = group.objectNames[0] || device.name || group.deviceId;
        device.aliases = group.objectNames.length ? group.objectNames : [device.name];
      }
      group.commands.forEach((command) => {
        const key = `${group.deviceId}\u0000${command.slot}`;
        configuredKeys.add(key);
        let capability = state.capabilities.find((item) => (
          item.deviceId === group.deviceId && Number(item.slot) === Number(command.slot)
        ));
        if (!capability) {
          capability = {
            id: `ir-slot:${group.deviceId}:${command.slot}`,
            deviceId: group.deviceId,
            key: `slot_${command.slot}`,
            createdAt: new Date().toISOString(),
            enabled: true,
          };
          state.capabilities.push(capability);
        }
        Object.assign(capability, {
          deviceId: group.deviceId,
          name: command.actionNames[0] || command.name,
          aliases: command.actionNames.length ? command.actionNames : [command.name],
          category: "infrared_slot",
          risk: capability.risk || "low",
          slot: Number(command.slot),
          status: "learned",
          verified: true,
          enabled: capability.enabled !== false,
          signalSource: "slot_catalog",
        });
      });
    });
    state.capabilities = state.capabilities.filter((capability) => {
      if (!["slot_catalog", "backend_catalog"].includes(capability.signalSource)) return true;
      return configuredKeys.has(`${capability.deviceId}\u0000${Number(capability.slot)}`);
    });
  }

  function configuredCapabilities(deviceId = null) {
    const configuredKeys = new Set(
      namedInfraredCommands()
        .filter((command) => command.deviceId)
        .map((command) => `${command.deviceId}\u0000${Number(command.slot)}`),
    );
    return state.capabilities.filter((item) => (
      (!deviceId || item.deviceId === deviceId)
      && item.status === "learned"
      && item.verified
      && validSlot(item.slot)
      && configuredKeys.has(`${item.deviceId}\u0000${Number(item.slot)}`)
    ));
  }

  function replaceInfraredSlotCatalog(items) {
    state.infraredCommands = (Array.isArray(items) ? items : [])
      .filter((item) => validSlot(item?.slot) && (
        String(item?.name || "").trim()
        || normalizedInfraredNames(item?.object_names ?? item?.objectNames).length
        || normalizedInfraredNames(item?.action_names ?? item?.actionNames).length
      ))
      .map(normalizedInfraredSlotRecord)
      .sort((left, right) => left.slot - right.slot);
    reconcileDevicesAndCapabilitiesFromSlots();
    saveState();
    renderGscuNamedCommands();
    syncGscuCommandNamesFromSlot();
    if ($("#extensionNfcDialog")) renderNfcDialog();
    renderUnifiedExtensionView?.();
  }

  async function refreshInfraredSlotCatalog({ migrateLegacy = true } = {}) {
    const shouldMigrate = migrateLegacy
      && localStorage.getItem(SLOT_CATALOG_MIGRATION_KEY) !== "done";
    const legacy = shouldMigrate ? namedInfraredCommands() : [];
    let result = await api("gscu/slots");
    const serverSlots = Array.isArray(result.slots) ? result.slots : [];
    const existingSlots = new Set(serverSlots.map((item) => Number(item.slot)));
    const missing = legacy.filter((item) => !existingSlots.has(Number(item.slot)));
    if (missing.length) {
      await Promise.all(missing.map((item) => api(`gscu/slots/${item.slot}`, {
        method: "PUT",
        body: JSON.stringify(
          item.deviceId && item.objectNames?.length && item.actionNames?.length
            ? {
              device_id: item.deviceId,
              object_names: item.objectNames,
              action_names: item.actionNames,
              source: item.source || "browser-migration",
            }
            : { name: item.name, source: item.source || "browser-migration" },
        ),
      })));
      result = await api("gscu/slots");
    }
    if (shouldMigrate) localStorage.setItem(SLOT_CATALOG_MIGRATION_KEY, "done");
    replaceInfraredSlotCatalog(result.slots);
    return namedInfraredCommands();
  }

  async function upsertNamedInfraredCommand(
    slot,
    deviceId,
    objectNames,
    actionNames,
    source = "tcp",
  ) {
    const normalizedSlot = Number(slot);
    const normalizedDeviceId = normalizedInfraredDeviceId(deviceId);
    const normalizedObjects = normalizedInfraredNames(objectNames);
    const normalizedActions = normalizedInfraredNames(actionNames);
    if (!validSlot(normalizedSlot)) throw new Error("红外槽位范围是 1–248。");
    if (!normalizedDeviceId) throw new Error("请填写唯一的设备 ID。");
    if (!/^[A-Za-z0-9][A-Za-z0-9._:-]*$/.test(normalizedDeviceId)) {
      throw new Error("设备 ID 必须以字母或数字开头，且只能包含字母、数字、点、下划线、冒号或连字符。");
    }
    if (!normalizedObjects.length) throw new Error("请至少填写一个控制对象名称。");
    if (!normalizedActions.length) throw new Error("请至少填写一个执行动作。");
    const result = await api(`gscu/slots/${normalizedSlot}`, {
      method: "PUT",
      body: JSON.stringify({
        device_id: normalizedDeviceId,
        object_names: normalizedObjects,
        action_names: normalizedActions,
        source,
      }),
    });
    const value = normalizedInfraredSlotRecord(result.slot);
    const existing = state.infraredCommands.find((item) => item.slot === normalizedSlot);
    if (existing) Object.assign(existing, value);
    else state.infraredCommands.push(value);
    reconcileDevicesAndCapabilitiesFromSlots();
    const boundDevice = state.devices.find((item) => item.id === value.deviceId);
    saveState();
    renderGscuNamedCommands();
    if (boundDevice) {
      renderAll();
      await syncPeripheralCatalog(boundDevice);
    }
    return value;
  }

  function renderGscuNamedCommands() {
    const container = $("#extensionGscuNamedCommands");
    if (!container) return;
    const groups = infraredDeviceGroups();
    container.innerHTML = groups.length
      ? groups.map((group) => `<section class="v2-gscu-device-group" data-device-id="${escapeHtml(group.deviceId)}"><header><div><small>${group.deviceId ? "DEVICE ID" : "UNASSIGNED"}</small><strong>${escapeHtml(group.deviceId || "未分配设备 ID")}</strong><span>${escapeHtml(group.objectNames.join("、") || "尚无控制对象描述")}</span></div><b>${group.commands.length} 条命令</b></header><div class="v2-gscu-device-command-grid">${group.commands.map((command) => `<article data-gscu-command-slot="${command.slot}"><header><span>红外槽位</span><b>IR ${String(command.slot).padStart(3, "0")}</b></header><label><span>设备 ID</span><input data-gscu-device-id maxlength="64" value="${escapeHtml(command.deviceId)}" placeholder="唯一设备 ID" aria-label="IR ${command.slot} 设备 ID" /></label><label><span>控制对象名称 / 别名</span><input data-gscu-object-names maxlength="240" value="${escapeHtml(command.objectNames.join("、"))}" placeholder="用逗号分隔多个名称" aria-label="IR ${command.slot} 控制对象名称" /></label><label><span>执行动作 / 别名</span><input data-gscu-action-names maxlength="240" value="${escapeHtml(command.actionNames.join("、"))}" placeholder="颜色等动作需包含结果值" aria-label="IR ${command.slot} 执行动作" /></label><footer><button type="button" data-gscu-named-emit="${command.slot}">发射</button><button type="button" data-gscu-named-save="${command.slot}">保存设置</button><button class="danger" type="button" data-gscu-named-remove="${command.slot}">删除本地记录</button></footer></article>`).join("")}</div></section>`).join("")
      : "<p>学习成功后将在这里按设备 ID 显示槽位、控制对象和执行动作。</p>";
  }

  function syncGscuCommandNamesFromSlot() {
    const slot = Number($("#extensionGscuSlot")?.value);
    const command = namedInfraredCommands().find((item) => item.slot === slot);
    if ($("#extensionGscuDeviceId")) {
      $("#extensionGscuDeviceId").value = command?.deviceId || "";
    }
    if ($("#extensionGscuObjectNames")) {
      $("#extensionGscuObjectNames").value = command?.objectNames.join("、") || "";
    }
    if ($("#extensionGscuActionNames")) {
      $("#extensionGscuActionNames").value = command?.actionNames.join("、") || "";
    }
  }

  function openGscuTcpDialog(health = healthState || {}) {
    renderGscuTcpDialog(health);
    $("#extensionGscuTcpResultDetails")?.removeAttribute("open");
    openDialog("extensionGscuTcpDialog");
    void refreshInfraredSlotCatalog().catch((error) => {
      showToast(`读取本地红外槽位数据库失败：${error.message}`, "error");
    });
    window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
  }

  function showGscuResult(value) {
    const output = $("#extensionGscuTcpResult");
    if (!output) return;
    output.textContent = typeof value === "string" ? value : JSON.stringify(value, null, 2);
  }

  async function configureGscuTcp(event) {
    event.preventDefault();
    const button = $("#extensionGscuTcpApply");
    button.disabled = true;
    button.textContent = "正在重启监听…";
    try {
      const result = await api("gscu/config", {
        method: "POST",
        body: JSON.stringify({
          listen_host: $("#extensionGscuTcpHost").value.trim(),
          port: Number($("#extensionGscuTcpPort").value),
        }),
      });
      healthState = result;
      renderGscuTcpDialog(result, false);
      showGscuResult(result);
      showToast(`TCP 已切换到 ${result.listen || `${result.listen_host}:${result.port}`}`, "success");
    } catch (error) {
      showGscuResult(error.payload || error.message);
      showToast(error.message, "error");
    } finally {
      button.disabled = false;
      button.textContent = "应用并开始监听";
    }
  }

  async function runGscuTcpAction(button) {
    const action = button.dataset.gscuAction;
    const slot = Number($("#extensionGscuSlot").value);
    const deviceId = normalizedInfraredDeviceId($("#extensionGscuDeviceId").value);
    const objectNames = normalizedInfraredNames($("#extensionGscuObjectNames").value);
    const actionNames = normalizedInfraredNames($("#extensionGscuActionNames").value);
    const payload = {};
    if (["learn", "emit", "read", "write"].includes(action)) payload.slot = slot;
    if (action === "write") payload.ir_data = $("#extensionGscuIrData").value.trim();
    if (action === "wifi-lock") payload.state = Number($("#extensionGscuWifiLock").value);
    if (action === "raw") {
      try {
        payload.command = JSON.parse($("#extensionGscuRawCommand").value);
      } catch (_error) {
        showToast("原始指令不是有效 JSON。", "error");
        return;
      }
    }
    const confirmation = $("#extensionGscuDangerConfirm").value.trim();
    if (action === "erase") {
      const count = namedInfraredCommands().length;
      const confirmed = window.confirm(
        `确认擦除 GSCU1B 中的全部红外码吗？本机数据库中的 ${count} 条槽位记录也会被永久清空，操作无法恢复。`,
      );
      if (!confirmed) return;
      payload.confirm = "ERASE_ALL";
    }
    if (action === "reset") payload.confirm = confirmation;
    if (action === "learn" && !deviceId) {
      showToast("请输入该红外槽位对应的唯一设备 ID。", "error");
      $("#extensionGscuDeviceId").focus();
      return;
    }
    if (action === "learn" && !objectNames.length) {
      showToast("请输入该红外槽位对应的控制对象名称。", "error");
      $("#extensionGscuObjectNames").focus();
      return;
    }
    if (action === "learn" && !actionNames.length) {
      showToast("请输入该红外槽位对应的执行动作。", "error");
      $("#extensionGscuActionNames").focus();
      return;
    }
    button.disabled = true;
    showGscuResult(`正在执行 ${action}…`);
    try {
      const endpoint = action === "erase" ? "gscu/erase-all" : `gscu/${action}`;
      let result = await api(endpoint, {
        method: "POST",
        body: JSON.stringify(payload),
      });
      if (action === "learn") {
        showToast("学习指令已下发，请立即短按遥控器目标按键。", "success");
        let readResult = null;
        let learnedSignal = null;
        let readError = null;
        await delay(1200);
        for (let attempt = 0; attempt < 6 && !learnedSignal; attempt += 1) {
          try {
            readResult = await api("gscu/read", {
              method: "POST",
              body: JSON.stringify({ slot }),
            });
            learnedSignal = infraredSignalFromResponse(readResult);
          } catch (error) {
            readError = error;
          }
          if (!learnedSignal && attempt < 5) await delay(1400);
        }
        if (!learnedSignal) {
          throw new Error(
            readError?.message
              ? `学习指令已下发，但槽位回读失败：${readError.message}`
              : "学习指令已下发，但槽位回读为空；请重新学习并短按遥控器按键。",
          );
        }
        await upsertNamedInfraredCommand(slot, deviceId, objectNames, actionNames, "tcp");
        result = {
          ...result,
          learning_capture_confirmed: true,
          verification: "slot_readback",
          slot_readback: readResult,
        };
      }
      if (action === "erase") {
        replaceInfraredSlotCatalog([]);
        state.capabilities.forEach((capability) => {
          if (!validSlot(capability.slot)) return;
          Object.assign(capability, {
            slot: null,
            status: "pending",
            verified: false,
            enabled: false,
            fingerprint: null,
            signalBytes: null,
            learnedAt: null,
            relearnedAt: null,
          });
        });
        saveState();
        renderAll();
        void syncPeripheralCatalog();
      }
      showGscuResult(result);
      showToast(
        action === "learn" ? `IR ${slot} 学习完成，槽位回读已确认。` : `${action} 指令处理完成。`,
        "success",
      );
    } catch (error) {
      showGscuResult(error.payload || error.message);
      showToast(error.message, "error");
    } finally {
      button.disabled = false;
    }
  }

  function bindGscuTcpDialogEvents() {
    const dialog = $("#extensionGscuTcpDialog");
    if (!dialog || dialog.dataset.bound === "true") return;
    dialog.dataset.bound = "true";
    $("#extensionGscuTcpForm").addEventListener("submit", configureGscuTcp);
    $("#extensionGscuSlot").addEventListener("change", syncGscuCommandNamesFromSlot);
    dialog.addEventListener("click", (event) => {
      if (event.target.closest('[data-close-extension-dialog="extensionGscuTcpDialog"]')) {
        closeDialog("extensionGscuTcpDialog");
        return;
      }
      const action = event.target.closest("[data-gscu-action]");
      if (action) {
        void runGscuTcpAction(action);
        return;
      }
      const emit = event.target.closest("[data-gscu-named-emit]");
      if (emit) {
        $("#extensionGscuSlot").value = emit.dataset.gscuNamedEmit;
        const command = namedInfraredCommands().find(
          (item) => item.slot === Number(emit.dataset.gscuNamedEmit),
        );
        $("#extensionGscuDeviceId").value = command?.deviceId || "";
        $("#extensionGscuObjectNames").value = command?.objectNames.join("、") || "";
        $("#extensionGscuActionNames").value = command?.actionNames.join("、") || "";
        const emitButton = $("[data-gscu-action=\"emit\"]", dialog);
        if (emitButton) void runGscuTcpAction(emitButton);
        return;
      }
      const save = event.target.closest("[data-gscu-named-save]");
      if (save) {
        const card = save.closest("[data-gscu-command-slot]");
        save.disabled = true;
        void upsertNamedInfraredCommand(
          Number(save.dataset.gscuNamedSave),
          $("[data-gscu-device-id]", card).value,
          $("[data-gscu-object-names]", card).value,
          $("[data-gscu-action-names]", card).value,
          "tcp",
        ).then((value) => {
          showToast(`IR ${value.slot} 的控制对象与执行动作已保存。`, "success");
        }).catch((error) => {
          showToast(error.message, "error");
        }).finally(() => { save.disabled = false; });
        return;
      }
      const remove = event.target.closest("[data-gscu-named-remove]");
      if (remove) {
        const slot = Number(remove.dataset.gscuNamedRemove);
        const command = namedInfraredCommands().find((item) => item.slot === slot);
        if (!window.confirm(`确认删除“${command?.name || `IR ${slot}`}”的本地数据库记录吗？GSCU1B 设备中的该红外码不会被擦除。`)) return;
        remove.disabled = true;
        void api(`gscu/slots/${slot}`, { method: "DELETE" }).then((result) => {
          const affectedDeviceId = command?.deviceId;
          state.infraredCommands = namedInfraredCommands().filter((item) => item.slot !== slot);
          reconcileDevicesAndCapabilitiesFromSlots();
          saveState();
          renderGscuNamedCommands();
          renderAll();
          void syncPeripheralCatalog(
            state.devices.find((item) => item.id === affectedDeviceId) || null,
          );
          showToast(result.message || `IR ${slot} 的本地记录已删除。`, "success");
        }).catch((error) => {
          remove.disabled = false;
          showToast(error.message, "error");
        });
      }
    });
  }

  function sharedConversationId() {
    const fromConsole = window.CognitiveAgentConsole?.getConversationId?.();
    if (typeof fromConsole === "string" && fromConsole.startsWith("conv-")) {
      sessionStorage.setItem(CONVERSATION_KEY, fromConsole);
      return fromConsole;
    }
    const stored = sessionStorage.getItem(CONVERSATION_KEY);
    if (stored?.startsWith("conv-")) return stored;
    const conversationId = uid("conv");
    sessionStorage.setItem(CONVERSATION_KEY, conversationId);
    return conversationId;
  }

  function isPhysicalVehicleSource(value) {
    return ["physical_can", "physical_can_ch0", "physical_can_ch1", "wireless_mqtt_ch0", "wireless_mqtt_ch1", "physical_partial"].includes(value);
  }

  function containsAuthoritativePhysicalCh1State(value) {
    if (!value || typeof value !== "object") return false;
    if (isPhysicalVehicleSource(value.source) || isPhysicalVehicleSource(value.feedback_source)) {
      return true;
    }
    return Object.values(value).some((item) => containsAuthoritativePhysicalCh1State(item));
  }

  function isAuthoritativeVehicleStatePayload(payload) {
    if (!payload || typeof payload !== "object") return false;
    if (payload.conversation_id !== sharedConversationId()) return false;
    return containsAuthoritativePhysicalCh1State(payload.actuator_state)
      || containsAuthoritativePhysicalCh1State(payload.domain_state);
  }

  function renderAuthoritativeVehicleState(payload) {
    if (!isAuthoritativeVehicleStatePayload(payload)) return false;
    const turn = Number(payload.conversation_turn);
    if (Number.isFinite(turn) && turn < latestVehicleStateTurn) return false;
    if (Number.isFinite(turn)) latestVehicleStateTurn = turn;
    const summary = $("#extensionVehicleStateSummary");
    if (!summary) return false;

    const requestLabel = String(payload.request_id || "-").slice(-8);
    const hasCh0 = containsAuthoritativePhysicalCh1State(payload.actuator_state?.passenger);
    const hasCh1 = containsAuthoritativePhysicalCh1State(payload.actuator_state?.driver)
      || containsAuthoritativePhysicalCh1State(payload.domain_state);
    const channelLabel = hasCh0 && hasCh1 ? "CH0 + CH1" : hasCh0 ? "CH0" : "CH1";
    const items = [
      `<span class="done"><i>${channelLabel}</i>真实车况 · TURN ${Number.isFinite(turn) ? turn : "-"} · ${escapeHtml(requestLabel)}</span>`,
    ];
    const feedback = Array.isArray(payload.physical_feedback)
      ? payload.physical_feedback.filter((item) => (
        item?.confirmed === true
        && [0, 1].includes(Number(item?.channel))
        && isPhysicalVehicleSource(item?.source)
      ))
      : [];
    if (feedback.length) {
      const frames = [...new Set(feedback.map((item) => item.frame?.frame_id).filter(Boolean))];
      items.push(`<span><i>FB</i>${feedback.length}/${payload.physical_feedback.length} MATCH · ${escapeHtml(frames.join(" / ") || channelLabel)}</span>`);
    }
    const driver = payload.actuator_state?.driver || {};
    const passenger = payload.actuator_state?.passenger || {};
    if (isPhysicalVehicleSource(passenger.ventilation?.feedback_source)) {
      items.push(`<span><i>P-VENT</i>${passenger.ventilation.state === "on" ? `ON L${escapeHtml(passenger.ventilation.level)}` : "OFF"}</span>`);
    }
    if (isPhysicalVehicleSource(passenger.heating?.feedback_source)) {
      items.push(`<span><i>P-HEAT</i>${passenger.heating.state === "on" ? `ON L${escapeHtml(passenger.heating.level)}` : "OFF"}</span>`);
    }
    const passengerPosition = passenger.position || {};
    Object.entries(passengerPosition).forEach(([axis, value]) => {
      if (!isPhysicalVehicleSource(value?.feedback_source)) return;
      items.push(`<span><i>P-SEAT</i>${escapeHtml(axis)} ${escapeHtml(value.position_pct ?? "-")}%</span>`);
    });
    const ventilation = driver.ventilation;
    const heating = driver.heating;
    if (ventilation?.feedback_source === "physical_can_ch1") {
      items.push(`<span><i>VENT</i>${ventilation.state === "on" ? `ON L${escapeHtml(ventilation.level)}` : "OFF"}</span>`);
    }
    if (heating?.feedback_source === "physical_can_ch1") {
      items.push(`<span><i>HEAT</i>${heating.state === "on" ? `ON L${escapeHtml(heating.level)}` : "OFF"}</span>`);
    }
    const massage = driver.massage;
    if (massage?.feedback_source === "physical_can_ch1") {
      items.push(`<span><i>MASSAGE</i>${escapeHtml(massage.mode || "off")} · ${escapeHtml(massage.strength || "off")}</span>`);
    }
    const climate = payload.domain_state?.climate;
    if (climate?.feedback_source === "physical_can_ch1") {
      const temperature = climate.zones?.driver?.temperature_c ?? "-";
      const outletMode = climate.zones?.driver?.outlet_mode || "-";
      items.push(`<span><i>AC</i>${escapeHtml(climate.power || climate.ac || "unknown")} · ${escapeHtml(temperature)}℃ · FAN ${escapeHtml(climate.fan_level ?? "-")} · ${escapeHtml(outletMode)}</span>`);
    }
    const roof = payload.domain_state?.roof;
    if (roof?.feedback_source === "physical_can_ch1") {
      items.push(`<span><i>ROOF</i>${escapeHtml(roof.shade_position_pct ?? "-")}% · ${escapeHtml(roof.motion_state || "unknown")}</span>`);
    }
    const frontLeftWindow = payload.domain_state?.window?.positions?.front_left;
    if (frontLeftWindow?.feedback_source === "physical_can_ch1") {
      items.push(`<span><i>WINDOW</i>左前 ${escapeHtml(frontLeftWindow.position_pct ?? "-")}%</span>`);
    }
    const interiorLight = payload.domain_state?.interior_light;
    if (interiorLight?.feedback_source === "physical_can_ch1") {
      items.push(`<span><i>INTERIOR</i>${escapeHtml(interiorLight.power || "unknown")}</span>`);
    }
    const ambientLight = payload.domain_state?.ambient_light;
    if (ambientLight?.feedback_source === "physical_can_ch1") {
      const brightness = `${ambientLight.front_brightness_level ?? "-"}/${ambientLight.rear_brightness_level ?? "-"}`;
      const color = `${ambientLight.front_color_index ?? "-"}/${ambientLight.rear_color_index ?? "-"}`;
      items.push(`<span><i>AMBIENT</i>${escapeHtml(ambientLight.power || "unknown")} · L${escapeHtml(brightness)} · C${escapeHtml(color)}</span>`);
    }
    summary.dataset.state = hasCh0 && hasCh1 ? "physical_can_dual" : hasCh0 ? "physical_can_ch0" : "physical_can_ch1";
    summary.innerHTML = items.join("");
    return true;
  }

  function syncSharedTwinMount() {
    const host = $("#extensionTwinHost");
    const shouldMount = document.body.dataset.module === "self-extension"
      && activeMode === "control";
    if (!sharedTwinBand) {
      sharedTwinBand = $("#seatTwin")?.closest(".twin-band") || null;
      if (sharedTwinBand?.parentNode) {
        sharedTwinHome = document.createComment("shared-vehicle-twin-home");
        sharedTwinBand.parentNode.insertBefore(sharedTwinHome, sharedTwinBand);
      }
    }
    if (!sharedTwinBand || !sharedTwinHome || !host) return;
    if (shouldMount) {
      if (sharedTwinBand.parentNode !== host) host.replaceChildren(sharedTwinBand);
      sharedTwinBand.classList.add("v2-extension-shared-twin");
    } else if (sharedTwinHome.parentNode && sharedTwinBand.parentNode !== sharedTwinHome.parentNode) {
      sharedTwinHome.parentNode.insertBefore(sharedTwinBand, sharedTwinHome.nextSibling);
      sharedTwinBand.classList.remove("v2-extension-shared-twin");
    }
    window.setTimeout(() => window.dispatchEvent(new Event("resize")), 80);
  }

  function setMode(mode) {
    activeMode = mode === "control" ? "control" : "study";
    sessionStorage.setItem(MODE_KEY, activeMode);
    document.body.dataset.extensionMode = activeMode;
    $$('[data-extension-mode]').forEach((button) => {
      const active = button.dataset.extensionMode === activeMode;
      button.classList.toggle("active", active);
      button.setAttribute("aria-pressed", String(active));
    });
    $$('[data-extension-view]').forEach((view) => {
      view.hidden = view.dataset.extensionView !== activeMode;
    });
    if (activeMode === "control") renderControl();
    syncSharedTwinMount();
    window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
  }

  function renderAll() {
    if ($("#extensionHardwareCount")) renderMetrics();
    if ($("#extensionHardwareGrid")) renderHardwareGrid();
    if ($("#extensionLearnedGrid")) renderControl();
    if ($("#extensionTypeChooser")) renderTypeChooser();
    if ($("#extensionNfcDialog")) renderNfcDialog();
    renderUnifiedExtensionView?.();
    window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
  }

  function normalizeCardUid(value) {
    return String(value || "").replace(/[^0-9a-f]/gi, "").toUpperCase();
  }

  function renderMetrics() {
    $("#extensionHardwareCount").textContent = String(state.devices.length);
    $("#extensionCapabilityCount").textContent = String(learnedCapabilities().length);
  }

  function renderHardwareGrid() {
    $("#extensionHardwareGrid").innerHTML = Object.keys(TOY_TYPES)
      .map((typeKey) => renderTypeCard(typeKey))
      .join("");
  }

  function renderTypeCard(typeKey) {
    const type = TOY_TYPES[typeKey];
    const devices = state.devices.filter((item) => item.type === typeKey);
    const selected = selectedDeviceForType(typeKey);
    const capabilities = selected
      ? deviceCapabilities(selected.id)
      : type.presets.map((item) => ({ ...item, id: null, status: "pending", slot: null }));
    const totalPages = Math.max(1, Math.ceil(capabilities.length / ACTION_PAGE_SIZE));
    pages[typeKey] = Math.min(pages[typeKey] || 0, totalPages - 1);
    const page = pages[typeKey];
    const visible = capabilities.slice(page * ACTION_PAGE_SIZE, (page + 1) * ACTION_PAGE_SIZE);
    const learned = selected ? learnedCapabilities(selected.id).length : 0;
    const selector = devices.length
      ? `<select data-extension-device-select="${typeKey}" aria-label="选择${type.label}">${devices.map((device) => `<option value="${escapeHtml(device.id)}" ${device.id === selected?.id ? "selected" : ""}>${escapeHtml(device.name)}</option>`).join("")}</select>`
      : `<span class="v2-extension-no-device">尚未添加具体硬件</span>`;
    return `<article class="v2-extension-type-card" data-extension-type="${typeKey}" data-extension-connected="${Boolean(selected)}">
      <header><span class="v2-extension-type-icon"><i data-lucide="${type.icon}"></i></span><div><small>${type.label}</small>${selector}</div><strong>${learned}/${capabilities.length}</strong><button type="button" data-add-type="${typeKey}" title="添加${type.label}" aria-label="添加${type.label}"><i data-lucide="plus"></i></button>${selected ? `<button type="button" data-delete-extension-device="${escapeHtml(selected.id)}" title="删除当前玩具" aria-label="删除当前玩具"><i data-lucide="trash-2"></i></button>` : ""}</header>
      <div class="v2-extension-capability-grid">${visible.map((capability) => renderCapability(capability, typeKey, Boolean(selected))).join("")}</div>
      <footer><span>${devices.length} 台硬件 · ${capabilities.length} 个动作</span><div><button type="button" data-extension-page="${typeKey}" data-page-direction="-1" ${page === 0 ? "disabled" : ""}><i data-lucide="chevron-left"></i></button><b>${page + 1}/${totalPages}</b><button type="button" data-extension-page="${typeKey}" data-page-direction="1" ${page >= totalPages - 1 ? "disabled" : ""}><i data-lucide="chevron-right"></i></button></div></footer>
    </article>`;
  }

  function renderCapability(capability, typeKey, hasDevice) {
    const learned = capability.status === "learned" && validSlot(capability.slot);
    if (!hasDevice) {
      return `<button class="v2-extension-capability preview" type="button" data-add-type="${typeKey}"><span>${escapeHtml(capability.name)}</span><small>添加硬件后可学习</small><i>添加</i></button>`;
    }
    return `<div class="v2-extension-capability ${learned ? "learned" : "pending"}">
      <button type="button" ${learned ? `data-run-extension-capability="${escapeHtml(capability.id)}"` : `data-learn-extension-capability="${escapeHtml(capability.id)}"`}><span>${escapeHtml(capability.name)}</span><small>${learned ? `IR ${String(capability.slot).padStart(3, "0")} · 已学习` : "待学习"}</small></button>
      <div>${learned ? `<button type="button" data-run-extension-capability="${escapeHtml(capability.id)}">执行</button><button type="button" data-forget-extension-capability="${escapeHtml(capability.id)}" aria-label="忘记动作"><i data-lucide="x"></i></button>` : `<button type="button" data-learn-extension-capability="${escapeHtml(capability.id)}">学习</button>`}</div>
    </div>`;
  }

  function renderControl() {
    const learned = learnedCapabilities();
    $("#extensionLearnedTotal").textContent = `${learned.length} 项可执行`;
    if (!learned.length) {
      $("#extensionLearnedGrid").innerHTML = `<div class="v2-extension-empty"><i data-lucide="book-open-check"></i><strong>还没有已学习动作</strong><span>切换到学习模式，为外设玩具录入遥控能力。</span><button type="button" data-switch-extension-mode="study">前往学习</button></div>`;
    } else {
      $("#extensionLearnedGrid").innerHTML = learned.map((capability) => {
        const device = state.devices.find((item) => item.id === capability.deviceId);
        const type = TOY_TYPES[device?.type] || TOY_TYPES.other;
        return `<button class="v2-extension-learned-action" type="button" data-run-extension-capability="${escapeHtml(capability.id)}" data-extension-type="${escapeHtml(device?.type || "other")}"><span><i data-lucide="${type.icon}"></i></span><div><small>${escapeHtml(device?.name || type.label)}</small><strong>${escapeHtml(capability.name)}</strong></div><i data-lucide="send"></i></button>`;
      }).join("");
    }
    $("#extensionVehicleGrid").innerHTML = VEHICLE_DEVICES.map((device) => {
      const execution = state.vehicleExecutions?.[device.id];
      const executionState = execution?.state || "idle";
      return `
        <article class="v2-extension-vehicle-card" data-extension-vehicle-device="${escapeHtml(device.id)}" data-execution-state="${escapeHtml(executionState)}">
          <header>
            <span><i data-lucide="${device.icon}"></i></span>
            <div><strong>${escapeHtml(device.name)}</strong><small>${escapeHtml(device.code)}</small></div>
            <b>${escapeHtml(device.channel)}</b>
          </header>
          <div class="v2-extension-parameter-list" aria-label="${escapeHtml(device.name)}可控参数">
            ${device.parameters.map((parameter) => `<span>${escapeHtml(parameter)}</span>`).join("")}
          </div>
          <footer>
            <small>当前动作</small>
            <strong data-extension-current-action>${escapeHtml(execution?.action || "等待指令")}</strong>
            <span data-extension-action-detail>${escapeHtml(execution?.detail || "输入自然语言后在此显示执行结果")}</span>
          </footer>
        </article>`;
    }).join("");
  }

  function findVehicleAction(command) {
    for (const device of VEHICLE_DEVICES) {
      const action = device.actions.find((item) => item.command === command);
      if (action) return { device, action };
    }
    const inferredDeviceId = /^副驾/.test(command)
      ? "passenger-seat"
      : /^seat driver /.test(command)
        ? "driver-seat"
        : /^ac /.test(command)
          ? "climate"
          : /^shade /.test(command)
            ? "roof"
            : /^light /.test(command)
              ? "interior-light"
              : /^window /.test(command)
                ? "windows"
                : null;
    const device = VEHICLE_DEVICES.find((item) => item.id === inferredDeviceId);
    if (device) return { device, action: { name: command, command } };
    return null;
  }

  function updateVehicleCardExecution(command, executionState, detail) {
    const match = findVehicleAction(command);
    if (!match) return;
    const actionText = match.action.name || command;
    state.vehicleExecutions ||= {};
    state.vehicleExecutions[match.device.id] = {
      state: executionState,
      action: actionText,
      detail,
      command,
      at: new Date().toISOString(),
    };
    const card = $(`[data-extension-vehicle-device="${match.device.id}"]`);
    if (!card) return;
    card.dataset.executionState = executionState;
    const actionNode = card.querySelector("[data-extension-current-action]");
    const detailNode = card.querySelector("[data-extension-action-detail]");
    if (actionNode) actionNode.textContent = actionText;
    if (detailNode) detailNode.textContent = detail;
  }

  function renderTypeChooser() {
    $("#extensionTypeChooser").innerHTML = Object.entries(TOY_TYPES).map(([key, type]) => `
      <button class="${key === selectedAddType ? "active" : ""}" type="button" data-extension-type-choice="${key}" data-extension-type="${key}"><span><i data-lucide="${type.icon}"></i></span><div><strong>${type.shortLabel}</strong><small>${type.description}</small></div></button>`).join("");
    $("#extensionPresetPreview").innerHTML = TOY_TYPES[selectedAddType].presets
      .map((item) => `<i>${escapeHtml(item.name)}</i>`)
      .join("");
  }

  function openAdd(typeKey = "light") {
    selectedAddType = TOY_TYPES[typeKey] ? typeKey : "other";
    $("#extensionHardwareName").value = "";
    renderTypeChooser();
    openDialog("extensionAddDialog");
    window.setTimeout(() => $("#extensionHardwareName")?.focus(), 80);
    window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
  }

  function addHardware(event) {
    event.preventDefault();
    const name = $("#extensionHardwareName").value.trim();
    if (!name) return;
    if (state.devices.some((item) => item.name === name)) {
      showToast("已经存在同名外设玩具。", "error");
      return;
    }
    const device = {
      id: uid("toy"),
      name,
      type: selectedAddType,
      aliases: [name],
      createdAt: new Date().toISOString(),
    };
    state.devices.push(device);
    state.capabilities.push(...seedPresets(device));
    state.selectedDeviceByType[device.type] = device.id;
    pages[device.type] = 0;
    saveState();
    closeDialog("extensionAddDialog");
    renderAll();
    showToast(`已添加“${name}”，可以开始学习遥控动作。`, "success");
  }

  function deleteHardware(deviceId) {
    const device = state.devices.find((item) => item.id === deviceId);
    if (!device || !window.confirm(`删除“${device.name}”及其全部前端能力记录？`)) return;
    state.devices = state.devices.filter((item) => item.id !== deviceId);
    state.capabilities = state.capabilities.filter((item) => item.deviceId !== deviceId);
    state.selectedDeviceByType[device.type] = state.devices.find(
      (item) => item.type === device.type,
    )?.id || null;
    saveState();
    renderAll();
    showToast(`已删除“${device.name}”。`);
  }

  function showLearnPage(page) {
    $$('[data-extension-learn-page]').forEach((element) => {
      element.hidden = Number(element.dataset.extensionLearnPage) !== page;
    });
    $$('[data-extension-learn-step]').forEach((element) => {
      element.classList.toggle("active", Number(element.dataset.extensionLearnStep) <= page);
    });
  }

  function resetLearnStatus() {
    window.clearInterval(learning.countdownTimer);
    learning = freshLearningSession();
    $("#extensionLearnAnimation").dataset.state = "ready";
    $("#extensionLearnStatusTitle").textContent = "准备接收遥控信号";
    $("#extensionLearnStatusMessage").textContent = "请将遥控器对准学习器并按一下对应按键。";
    $("#extensionLearnCountdown").textContent = "15";
    $("#extensionStartLearn").disabled = false;
    $("#extensionStartLearn").textContent = "开始接收";
    $("#extensionCancelLearn").hidden = false;
    $("#extensionTestEmit").disabled = false;
    $("#extensionTestEmit").textContent = "发射试一下";
    $("#extensionConfirmLearn").disabled = true;
  }

  function openLearn(capabilityId) {
    const capability = state.capabilities.find((item) => item.id === capabilityId);
    const device = state.devices.find((item) => item.id === capability?.deviceId);
    if (!capability || !device) return;
    const type = TOY_TYPES[device.type] || TOY_TYPES.other;
    const relearning = capability.status === "learned"
      && capability.verified
      && validSlot(capability.slot);
    const targetSlot = relearning ? Number(capability.slot) : allocateSlot();
    resetLearnStatus();
    learning.draft = {
      capabilityId: capability.id,
      deviceId: device.id,
      slot: targetSlot,
      relearning,
    };
    $("#extensionLearnTitle").textContent = `${relearning ? "重新学习" : "学习"}“${capability.name}”`;
    $("#extensionLearnIcon").innerHTML = `<i data-lucide="${type.icon}"></i>`;
    $("#extensionLearnDevice").textContent = device.name;
    $("#extensionLearnAction").textContent = `${capability.name}${relearning ? "（重新学习）" : ""}`;
    $("#extensionLearnAliases").value = (capability.aliases || []).join("、");
    $("#extensionLearnRisk").value = capability.risk || "low";
    $("#extensionLearnSlot").value = targetSlot || "";
    $("#extensionContinueLearn").textContent = relearning
      ? "继续并覆盖原红外信号"
      : "继续接收遥控信号";
    $("#extensionConfirmLearn").textContent = relearning
      ? "确认并完成重新学习"
      : "确认并完成学习";
    showLearnPage(1);
    openDialog("extensionLearnDialog");
    window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
  }

  function collectLearningDraft() {
    const capability = state.capabilities.find(
      (item) => item.id === learning.draft?.capabilityId,
    );
    const device = state.devices.find((item) => item.id === capability?.deviceId);
    const slot = Number($("#extensionLearnSlot").value || allocateSlot());
    if (!capability || !device) throw new Error("预设动作不存在。");
    if (!validSlot(slot)) throw new Error("没有可用红外槽位。");
    const occupied = learnedCapabilities().find(
      (item) => Number(item.slot) === slot && item.id !== capability.id,
    );
    if (occupied) throw new Error(`槽位 ${slot} 已被“${occupied.name}”使用。`);
    return {
      capabilityId: capability.id,
      deviceId: device.id,
      slot,
      aliases: $("#extensionLearnAliases").value
        .split(/[，,、;；]+/)
        .map((item) => item.trim())
        .filter(Boolean),
      risk: $("#extensionLearnRisk").value,
    };
  }

  async function sendGatewayCommand(action, payload = {}, signal = undefined) {
    const result = await api(`gscu/${action}`, {
      method: "POST",
      body: JSON.stringify(payload),
      signal,
    });
    state.lastProtocol = {
      at: new Date().toISOString(),
      action,
      payload,
      response: result,
    };
    saveState();
    return result;
  }

  async function startLearning() {
    if (learning.phase === "listening") return;
    try {
      learning.draft = collectLearningDraft();
    } catch (error) {
      showToast(error.message, "error");
      showLearnPage(1);
      return;
    }
    const capability = state.capabilities.find((item) => item.id === learning.draft.capabilityId);
    const device = state.devices.find((item) => item.id === learning.draft.deviceId);
    learning.phase = "listening";
    learning.abortController = new AbortController();
    $("#extensionLearnAnimation").dataset.state = "listening";
    $("#extensionLearnStatusTitle").textContent = `正在学习“${capability.name}”…`;
    $("#extensionLearnStatusMessage").textContent = `请将“${device.name}”的遥控器对准学习器。`;
    $("#extensionStartLearn").disabled = true;
    $("#extensionStartLearn").textContent = "正在接收";
    let countdown = 15;
    $("#extensionLearnCountdown").textContent = String(countdown);
    learning.countdownTimer = window.setInterval(() => {
      countdown -= 1;
      $("#extensionLearnCountdown").textContent = countdown > 0 ? String(countdown) : "…";
      if (countdown <= 0) window.clearInterval(learning.countdownTimer);
    }, 1000);
    try {
      const learnResult = await sendGatewayCommand(
        "learn",
        { slot: learning.draft.slot },
        learning.abortController.signal,
      );
      let learnedSignal = null;
      let readError = null;
      await delay(1200);
      for (let attempt = 0; attempt < 6 && !learnedSignal; attempt += 1) {
        try {
          const readResult = await sendGatewayCommand("read", { slot: learning.draft.slot });
          learnedSignal = infraredSignalFromResponse(readResult);
        } catch (error) {
          readError = error;
        }
        if (!learnedSignal && attempt < 5) await delay(1400);
      }
      learnedSignal ||= infraredSignalFromResponse(learnResult);
      if (!learnedSignal) {
        throw new Error(
          readError?.message
            ? `学习后无法回读槽位：${readError.message}`
            : "学习指令已下发，但物理槽位回读为空；请对准学习器并短按遥控器按键。",
        );
      }
      learning.fingerprint = await infraredFingerprint(learnedSignal);
      learning.signalBytes = learnedSignal.length;
      window.clearInterval(learning.countdownTimer);
      learning.phase = "learned";
      $("#extensionLearnAnimation").dataset.state = "success";
      await delay(300);
      showLearnPage(3);
    } catch (error) {
      if (error.name === "AbortError") return;
      window.clearInterval(learning.countdownTimer);
      learning.phase = "idle";
      $("#extensionLearnAnimation").dataset.state = "ready";
      $("#extensionLearnStatusTitle").textContent = "这次没有捕获到按键";
      $("#extensionLearnStatusMessage").textContent = error.message;
      $("#extensionLearnCountdown").textContent = "";
      $("#extensionStartLearn").disabled = false;
      $("#extensionStartLearn").textContent = "重新接收";
      showToast(error.message, "error");
    }
  }

  async function cancelLearning() {
    window.clearInterval(learning.countdownTimer);
    learning.abortController?.abort();
    try {
      await sendGatewayCommand("cancel");
    } catch (error) {
      console.warn(error);
    }
    resetLearnStatus();
    showLearnPage(1);
  }

  async function testLearning() {
    if (!validSlot(learning.draft?.slot)) return;
    const button = $("#extensionTestEmit");
    button.disabled = true;
    button.textContent = "正在发射…";
    try {
      await sendGatewayCommand("emit", { slot: learning.draft.slot });
      learning.tested = true;
      $("#extensionConfirmLearn").disabled = false;
      $("#extensionTestTitle").textContent = "信号已发射，请确认玩具反应";
      $("#extensionTestMessage").textContent = "动作正确即可完成学习；不正确请重新接收。";
      showToast("红外信号已发射，请观察玩具。", "success");
    } catch (error) {
      showToast(error.message, "error");
    } finally {
      button.disabled = false;
      button.textContent = "再发射一次";
    }
  }

  async function confirmLearning() {
    if (!learning.tested || !learning.draft) return;
    const capability = state.capabilities.find(
      (item) => item.id === learning.draft.capabilityId,
    );
    const device = state.devices.find((item) => item.id === capability?.deviceId);
    if (!capability || !device) return;
    const button = $("#extensionConfirmLearn");
    button.disabled = true;
    const relearning = Boolean(learning.draft.relearning);
    const learnedAt = new Date().toISOString();
    try {
      await upsertNamedInfraredCommand(
        Number(learning.draft.slot),
        device.id,
        [device.name, ...(device.aliases || [])],
        [capability.name, ...learning.draft.aliases],
        "capability",
      );
    } catch (error) {
      button.disabled = false;
      showToast(`保存红外槽位数据库失败：${error.message}`, "error");
      return false;
    }
    Object.assign(capability, {
      aliases: [...new Set([capability.name, ...learning.draft.aliases])],
      risk: learning.draft.risk,
      slot: Number(learning.draft.slot),
      status: "learned",
      verified: true,
      enabled: true,
      fingerprint: learning.fingerprint || capability.fingerprint || null,
      signalBytes: learning.signalBytes || capability.signalBytes || null,
      learnedAt,
      relearnedAt: relearning ? learnedAt : capability.relearnedAt || null,
      signalSource: "n7web",
    });
    state.sessionStartedAt ||= new Date().toISOString();
    saveState();
    closeDialog("extensionLearnDialog");
    renderAll();
    showToast(
      relearning
        ? `“${capability.name}”已重新学习并覆盖 IR ${String(capability.slot).padStart(3, "0")}。`
        : `“${capability.name}”已学习完成。`,
      "success",
    );
    learning = freshLearningSession();
    return true;
  }

  function forgetCapability(capabilityId) {
    const capability = state.capabilities.find((item) => item.id === capabilityId);
    if (!capability || !window.confirm(`忘记动作“${capability.name}”？`)) return;
    Object.assign(capability, {
      slot: null,
      status: "pending",
      verified: false,
      enabled: false,
      learnedAt: null,
    });
    saveState();
    renderAll();
    void syncPeripheralCatalog();
    showToast(`“${capability.name}”已恢复为待学习。`);
  }

  function peripheralCatalog() {
    return configuredCapabilities().map((capability) => {
      const device = state.devices.find((item) => item.id === capability.deviceId);
      const type = TOY_TYPES[device?.type] || TOY_TYPES.other;
      const slotRecord = namedInfraredCommands().find(
        (item) => item.deviceId === capability.deviceId
          && Number(item.slot) === Number(capability.slot),
      );
      const objectNames = slotRecord?.objectNames?.length
        ? slotRecord.objectNames
        : normalizedInfraredNames([device?.name, ...(device?.aliases || [])]);
      const actionNames = slotRecord?.actionNames?.length
        ? slotRecord.actionNames
        : normalizedInfraredNames([capability.name, ...(capability.aliases || [])]);
      return {
        id: capability.id,
        status: "learned",
        device_id: device?.id,
        device_name: device?.name,
        device_aliases: device?.aliases || [],
        object_names: objectNames,
        device_type: device?.type,
        card_uid: device?.cardUid || null,
        toy_number: device?.toyNumber || null,
        type_label: type.label,
        action: capability.name,
        aliases: capability.aliases || [],
        action_names: actionNames,
        risk: capability.risk || "low",
        slot: capability.slot,
        enabled: capability.enabled !== false,
        transport: "gscu_tcp",
      };
    }).filter((item) => item.device_id && item.card_uid && validSlot(item.slot));
  }

  async function hydratePeripheralCatalog() {
    const payload = await api("peripherals");
    const catalog = Array.isArray(payload.catalog) ? payload.catalog : [];
    if (!catalog.length) return 0;
    const restoredDeviceIds = new Set();
    catalog.forEach((item) => {
      if (!item || typeof item !== "object" || !item.id || !validSlot(item.slot)) return;
      const objectNames = normalizedInfraredNames(item.object_names);
      const actionNames = normalizedInfraredNames(item.action_names);
      let device = state.devices.find((candidate) => candidate.id === item.device_id);
      if (!device) {
        device = {
          id: item.device_id,
          name: objectNames[0] || item.device_name,
          type: TOY_TYPES[item.device_type] ? item.device_type : "other",
          aliases: objectNames.length
            ? objectNames
            : Array.isArray(item.device_aliases)
            ? item.device_aliases
            : [item.device_name],
          toyNumber: item.toy_number || nextToyNumber(),
          cardUid: normalizeCardUid(item.card_uid),
          createdAt: new Date().toISOString(),
        };
        state.devices.push(device);
        restoredDeviceIds.add(device.id);
      } else {
        device.name = objectNames[0] || item.device_name || device.name;
        device.aliases = objectNames.length
          ? objectNames
          : Array.isArray(item.device_aliases)
          ? item.device_aliases
          : device.aliases || [device.name];
        device.cardUid = normalizeCardUid(item.card_uid) || device.cardUid;
      }
      let capability = state.capabilities.find((candidate) => candidate.id === item.id);
      if (!capability) {
        capability = {
          id: item.id,
          deviceId: device.id,
          key: "restored",
          name: actionNames[0] || item.action,
          aliases: actionNames.length
            ? actionNames
            : Array.isArray(item.aliases) ? item.aliases : [item.action],
          category: "restored",
          risk: item.risk || "low",
          visual: null,
          createdAt: new Date().toISOString(),
        };
        state.capabilities.push(capability);
      }
      Object.assign(capability, {
        deviceId: device.id,
        name: actionNames[0] || item.action,
        aliases: actionNames.length
          ? actionNames
          : Array.isArray(item.aliases) ? item.aliases : capability.aliases || [],
        risk: item.risk || "low",
        slot: Number(item.slot),
        status: "learned",
        verified: true,
        enabled: item.enabled !== false,
        signalSource: "backend_catalog",
      });
    });
    restoredDeviceIds.forEach((deviceId) => {
      const device = state.devices.find((item) => item.id === deviceId);
      if (!device) return;
      const knownNames = new Set(deviceCapabilities(deviceId).map((item) => item.name));
      seedPresets(device).forEach((capability) => {
        if (!knownNames.has(capability.name)) state.capabilities.push(capability);
      });
    });
    saveState();
    renderAll();
    return catalog.length;
  }

  function vehicleCatalog() {
    return VEHICLE_DEVICES.map((device) => ({
      id: device.id,
      name: device.name,
      code: device.code,
      channel: device.channel,
      parameters: device.parameters,
      actions: device.actions,
    }));
  }

  function hydratePlan(steps) {
    if (!Array.isArray(steps)) throw new Error("联动计划步骤格式无效。");
    if (steps.length > MAX_PLAN_STEPS) throw new Error("联动计划步骤过多。");
    const plan = steps.map((step) => {
      if (!step || typeof step !== "object" || Array.isArray(step)) {
        throw new Error("联动计划包含无效步骤。");
      }
      if (step.kind === "delay") {
        if (!Number.isInteger(step.delay_ms)
          || step.delay_ms < MIN_PLAN_DELAY_MS
          || step.delay_ms > MAX_PLAN_DELAY_MS) {
          throw new Error("延时步骤必须使用安全范围内的整数毫秒。");
        }
        if ([step.capability_id, step.command].some(
          (value) => value != null && String(value).trim() !== "",
        )) {
          throw new Error("延时步骤不能包含设备命令。");
        }
        return {
          kind: "delay",
          delayMs: step.delay_ms,
          label: step.delay_ms % 1000 === 0
            ? `等待 ${step.delay_ms / 1000} 秒`
            : `等待 ${step.delay_ms} 毫秒`,
          risk: "low",
        };
      }
      if (step.delay_ms !== undefined && step.delay_ms !== 0) {
        throw new Error("非延时步骤不能携带延时值。");
      }
      if (step.kind === "vehicle") {
        const command = String(step.command || "").trim();
        if (!command) throw new Error("车端计划步骤缺少命令。");
        return {
          kind: "vehicle",
          command,
          label: step.label || command,
          risk: step.risk || "medium",
        };
      }
      if (step.kind !== "peripheral") throw new Error("联动计划包含未知步骤。");
      const capability = state.capabilities.find((item) => item.id === step.capability_id);
      const device = state.devices.find((item) => item.id === capability?.deviceId);
      if (!capability || !device || !learnedCapabilities(device.id).some(
        (item) => item.id === capability.id,
      )) throw new Error("联动计划引用了尚未学习的外设能力。");
      return {
        kind: "peripheral",
        device,
        capability,
        label: `${device.name} · ${capability.name}`,
        risk: capability.risk || "low",
      };
    });
    let totalDelayMs = 0;
    plan.forEach((step, index) => {
      if (step.kind !== "delay") return;
      if (index === 0 || index === plan.length - 1) {
        throw new Error("延时步骤必须位于两个动作之间。");
      }
      if (plan[index - 1].kind === "delay") {
        throw new Error("联动计划不能包含连续延时。");
      }
      totalDelayMs += step.delayMs;
    });
    if (totalDelayMs > MAX_TOTAL_PLAN_DELAY_MS) {
      throw new Error("联动计划累计延时超过安全上限。");
    }
    return plan;
  }

  function setExecutionState(stateName, title, note, progress = 0) {
    const card = $("#extensionExecutionState");
    card.dataset.state = stateName;
    $("#extensionRunTitle").textContent = title;
    $("#extensionRunNote").textContent = note;
    $("#extensionRunProgressBar").style.width = `${Math.max(0, Math.min(100, progress))}%`;
  }

  function renderRunPlan(plan, active = -1) {
    const rail = $("#extensionRunPlan");
    rail.hidden = false;
    rail.innerHTML = plan.map((step, index) => `
      <span class="${index < active ? "done" : index === active ? "active" : ""}"><i>${String(index + 1).padStart(2, "0")}</i>${escapeHtml(step.label || "待执行动作")}</span>`).join("");
  }

  async function executeInstruction(text) {
    const input = String(text || "").trim();
    if (!input) {
      showToast("请先输入要执行的动作。", "error");
      return;
    }
    if (isPlanning || isExecuting) {
      showToast("上一条指令还在处理，请稍等。", "error");
      return;
    }
    const button = $("#extensionExecuteButton");
    isPlanning = true;
    button.disabled = true;
    setExecutionState("running", "GPT 正在理解意图", "匹配已学习能力与车端能力", 10);
    try {
      const result = await api("assistant/plan", {
        method: "POST",
        body: JSON.stringify({
          utterance: input,
          peripherals: peripheralCatalog(),
          vehicle_devices: vehicleCatalog(),
        }),
      });
      if (result.needs_confirmation) {
        setExecutionState("warning", "需要补充目标", result.question || "请说明具体硬件", 0);
        showToast(result.question || "请说明具体硬件。", "error");
        return;
      }
      const plan = hydratePlan(result.steps);
      if (!plan.length) {
        setExecutionState("warning", "没有可执行动作", result.summary || "未匹配到能力", 0);
        showToast(result.summary || "没有找到可执行动作。", "error");
        return;
      }
      const risky = plan.filter((item) => item.risk === "high");
      if (risky.length && !window.confirm(
        `将执行 ${risky.length} 个可能让玩具移动的动作，请确认周围安全。`,
      )) {
        setExecutionState("idle", "已取消执行", "高风险动作未获确认", 0);
        return;
      }
      isPlanning = false;
      await executePlan(plan);
    } catch (error) {
      setExecutionState("error", "联动计划生成失败", error.message, 0);
      showToast(error.message, "error");
    } finally {
      isPlanning = false;
      button.disabled = false;
    }
  }

  function vehicleExecutionSucceeded(result) {
    const operations = Array.isArray(result?.operation_results)
      ? result.operation_results
      : [];
    const everyOperationSucceeded = operations.length > 0
      && operations.every((item) => item?.status === "succeeded");
    const hardwareRequest = result?.execution_mode === "hardware";
    const feedback = Array.isArray(result?.physical_feedback)
      ? result.physical_feedback
      : [];
    const everyHardwareOperationConfirmed = !hardwareRequest || (
      result?.physical_feedback_confirmed === true
      && feedback.length === operations.length
      && feedback.every((item) => item?.confirmed === true)
    );
    return result?.success === true
      && result?.status === "succeeded"
      && everyOperationSucceeded
      && everyHardwareOperationConfirmed;
  }

  function synchronizeVehicleExecution(command, result) {
    if (!result || typeof result !== "object") return;
    const completed = vehicleExecutionSucceeded(result);
    state.lastVehicleExecution = {
      at: new Date().toISOString(),
      command,
      success: completed,
      status: result.status || "unknown",
      executionMode: result.execution_mode || null,
      requestId: result.request_id || null,
      operationResults: result.operation_results || [],
      executionReport: result.execution_report || null,
      domainState: result.domain_state || null,
      actuatorState: result.actuator_state || null,
      physicalState: result.physical_state || null,
      physicalFeedback: result.physical_feedback || [],
      physicalFeedbackConfirmed: result.physical_feedback_confirmed === true,
      conversationId: result.conversation_id || null,
      conversationTurn: result.conversation_turn ?? null,
    };
    renderAuthoritativeVehicleState(result);
    const operationCount = Array.isArray(result.operation_results)
      ? result.operation_results.length
      : 0;
    const physicalCount = Array.isArray(result.physical_feedback)
      ? result.physical_feedback.filter((item) => item?.confirmed === true).length
      : 0;
    const detail = completed
      ? result.execution_mode === "hardware"
        ? `物理回读已确认 · ${physicalCount || operationCount} 项`
        : `安全演练已完成 · ${operationCount || 1} 项`
      : vehicleExecutionError(result);
    updateVehicleCardExecution(command, completed ? "succeeded" : "failed", detail);
    saveState();
    window.dispatchEvent(new CustomEvent("cognitive-agent:extension-vehicle-result", {
      detail: result,
    }));
  }

  function vehicleExecutionError(result) {
    const failed = (result?.operation_results || []).find(
      (item) => item?.status !== "succeeded",
    );
    return result?.message
      || failed?.message
      || `车端动作未成功完成（${result?.status || "unknown"}）`;
  }

  async function executeVehicle(command) {
    let result;
    try {
      result = await api("vehicle/execute", {
        method: "POST",
        // Channel, seat target, provider, vehicle profile and execution mode
        // are intentionally absent: the server owns CH0/CH1 routing and safety policy.
        body: JSON.stringify({ command, conversation_id: sharedConversationId() }),
      });
    } catch (error) {
      if (error.payload) synchronizeVehicleExecution(command, error.payload);
      throw error;
    }
    synchronizeVehicleExecution(command, result);
    if (!vehicleExecutionSucceeded(result)) {
      const error = new Error(vehicleExecutionError(result));
      error.payload = result;
      throw error;
    }
    return result;
  }

  async function executePlan(plan) {
    if (isExecuting || !plan.length) return;
    isExecuting = true;
    renderRunPlan(plan);
    let completed = 0;
    let vehicleDryRun = false;
    let vehicleHardwareFeedback = 0;
    for (let index = 0; index < plan.length; index += 1) {
      const step = plan[index];
      renderRunPlan(plan, index);
      setExecutionState(
        "running",
        step.label,
        `正在处理第 ${index + 1} / ${plan.length} 个动作`,
        (index / plan.length) * 100,
      );
      try {
        if (step.kind === "delay") {
          await delay(step.delayMs);
        } else if (step.kind === "vehicle") {
          updateVehicleCardExecution(step.command, "running", `正在执行：${step.label || step.command}`);
          saveState();
          const result = await executeVehicle(step.command);
          vehicleDryRun ||= result.execution_mode === "dry_run";
          if (result.execution_mode === "hardware") {
            vehicleHardwareFeedback += result.physical_feedback.length;
          }
        } else {
          await sendGatewayCommand("emit", { slot: step.capability.slot });
        }
        completed += 1;
        addHistory(step, true);
      } catch (error) {
        addHistory(step, false, error.message);
        setExecutionState("error", "联动执行已中断", error.message, (completed / plan.length) * 100);
        showToast(error.message, "error");
        break;
      }
      const nextStep = plan[index + 1];
      if (nextStep && step.kind !== "delay" && nextStep.kind !== "delay") {
        await delay(state.settings.actionDelayMs);
      }
    }
    renderRunPlan(plan, completed);
    if (completed === plan.length) {
      setExecutionState(
        "success",
        "联动计划已全部处理",
        vehicleDryRun
          ? "外设已发射，车端处于安全演练模式"
          : vehicleHardwareFeedback > 0
            ? `车端 ${vehicleHardwareFeedback} 项动作均已同步物理反馈`
            : "外设与车端链路处理完成",
        100,
      );
      showToast("联动计划已全部处理。", "success");
    }
    isExecuting = false;
  }

  function addHistory(step, success, error = null) {
    state.history.unshift({
      id: uid("history"),
      at: new Date().toISOString(),
      kind: step.kind || "peripheral",
      deviceId: step.device?.id || null,
      capabilityName: step.label || step.capability?.name || step.command,
      slot: step.capability?.slot || null,
      success,
      error,
    });
    state.history = state.history.slice(0, HISTORY_LIMIT);
    saveState();
  }

  async function runCapability(capabilityId) {
    const capability = state.capabilities.find((item) => item.id === capabilityId);
    const device = state.devices.find((item) => item.id === capability?.deviceId);
    if (!capability || !device) return;
    if (capability.risk === "high" && !window.confirm(
      `“${capability.name}”可能让玩具移动，请确认周围安全。`,
    )) return;
    await executePlan([{
      kind: "peripheral",
      device,
      capability,
      label: `${device.name} · ${capability.name}`,
      risk: capability.risk || "low",
    }]);
  }

  async function requestHealth() {
    const controller = new AbortController();
    const timeoutId = window.setTimeout(() => controller.abort(), HEALTH_REQUEST_TIMEOUT_MS);
    try {
      return await api("health", { signal: controller.signal });
    } finally {
      window.clearTimeout(timeoutId);
    }
  }

  function refreshHealth(showMessage = false) {
    healthToastRequested ||= showMessage;
    if (healthRefreshPromise) return healthRefreshPromise;
    healthRefreshPromise = (async () => {
      if (!healthState || healthToastRequested) {
        $("#extensionStudyHealth").dataset.state = "checking";
        $("#extensionStudyHealthState").textContent = "CHECK";
        $("#extensionVehicleCard").dataset.state = "checking";
        $("#extensionVehicleState").textContent = "CHECK";
      }
      try {
        healthState = await requestHealth();
      } catch (error) {
        healthState = {
          connected: false,
          listening: false,
          transport: "unavailable",
          message: error.message,
          gpt: { configured: false },
          vehicle: { connected: false },
        };
      }
      const connected = Boolean(healthState.connected);
      const listening = !connected && Boolean(healthState.listening);
      const transport = String(healthState.transport || "--").toUpperCase();
      let connectionLabel;
      if (connected) {
        const peer = String(healthState.peer || "").trim();
        connectionLabel = healthState.transport === "simulation"
          ? "模拟学习器已就绪"
          : `${transport} 学习器已连接${peer ? ` · ${peer}` : ""}`;
      } else if (listening) {
        connectionLabel = `${transport} 监听已就绪，等待 GSCU1B 接入`;
      } else {
        connectionLabel = healthState.message || "GSCU1B 尚未连接";
      }
      const studyHealthText = $("#extensionStudyHealthText");
      studyHealthText.textContent = connectionLabel;
      studyHealthText.title = healthState.message || connectionLabel;
      $("#extensionStudyHealthState").textContent = connected
        ? "READY"
        : (listening ? "WAIT" : "OFFLINE");
      $("#extensionStudyHealth").dataset.state = connected
        ? "online"
        : (listening ? "checking" : "offline");
      const vehicleConnected = Boolean(healthState.vehicle?.connected);
      $("#extensionVehicleState").textContent = vehicleConnected ? "READY" : "OFFLINE";
      $("#extensionVehicleCard").dataset.state = vehicleConnected ? "online" : "offline";
      const connectionText = $("#extensionConnectionText");
      connectionText.textContent = connectionLabel;
      connectionText.title = healthState.message || connectionLabel;
      $(".v2-extension-footer").classList.toggle("offline", !connected);
      $("#extensionModelName").textContent = healthState.gpt?.configured
        ? healthState.gpt.model || "GPT"
        : "GPT 未配置";
      $("#extensionModelState").textContent = healthState.gpt?.configured ? "READY" : "LOCAL";
      $("#extensionModelCard").classList.toggle("unavailable", !healthState.gpt?.configured);
      if (healthToastRequested) {
        const ready = [connected, healthState.gpt?.configured, healthState.vehicle?.connected]
          .filter(Boolean).length;
        showToast(`自扩展链路：${ready} / 3 项就绪。`, ready === 3 ? "success" : "error");
      }
      healthToastRequested = false;
      return healthState;
    })().finally(() => {
      healthRefreshPromise = null;
    });
    return healthRefreshPromise;
  }

  function startHealthPolling() {
    if (healthPollTimer !== null) return;
    healthPollTimer = window.setInterval(() => {
      if (document.visibilityState === "visible"
        && document.body.dataset.module === "self-extension") refreshHealth();
    }, HEALTH_POLL_INTERVAL_MS);
  }

  function stopHealthPolling() {
    if (healthPollTimer !== null) window.clearInterval(healthPollTimer);
    healthPollTimer = null;
  }

  async function resetSession() {
    const button = $("#extensionConfirmReset");
    button.disabled = true;
    button.textContent = "正在擦除学习器…";
    try {
      await sendGatewayCommand("erase", { confirm: "ERASE_ALL" });
      state.capabilities = state.devices.flatMap((device) => seedPresets(device));
      state.infraredCommands = [];
      state.history = [];
      state.sessionStartedAt = new Date().toISOString();
      saveState();
      closeDialog("extensionResetDialog");
      renderAll();
      showToast("学习器已擦除，所有动作恢复为待学习。", "success");
    } catch (error) {
      showToast(error.message, "error");
    } finally {
      button.textContent = "擦除并重新开始";
      button.disabled = $("#extensionResetConfirm").value.trim() !== "清空";
    }
  }

  function initializeDesktopPet() {
    const pet = $("#extensionDesktopPet");
    const body = $("#extensionPetBody");
    const bubble = $("#extensionPetBubble");
    const image = $(".v2-extension-pet-image", body);
    const entranceCanvas = $(".v2-extension-pet-entrance-canvas", body);
    const tailCanvas = $(".v2-extension-pet-tail-canvas", body);
    const mouth = $(".v2-extension-pet-mouth-closed", body);
    const entranceContext = entranceCanvas?.getContext("2d");
    const tailContext = tailCanvas?.getContext("2d");
    if (!pet || !body || !bubble || !image || !entranceCanvas || !entranceContext
      || !tailCanvas || !tailContext || !mouth) return;
    const sourceImage = new Image();
    const entranceSourceImage = new Image();
    const themedEntranceImage = new Image();
    const ENTRANCE_KEYFRAME_COUNT = 12;
    const ENTRANCE_CELL_SIZE = 512;
    const ENTRANCE_DURATION_MS = 2300;
    const ENTRANCE_WALK_END = 0.6;
    const ENTRANCE_WALK_STEPS = 5;
    const ENTRANCE_SETTLE_START_FRAME = 5;
    const ENTRANCE_WALK_POSES = [
      0, 1, 2, 3, 4, 3, 2, 1, 0, 1, 2, 3, 4, 3, 2, 1, 0, 1, 2, 3, 4,
    ];
    let tailWaveQueued = false;
    let tailWaveSequenceActive = false;
    let tailWaveReplaying = false;
    let entranceAnimationFrame = null;
    let entranceRequested = document.body.dataset.module === "self-extension";
    let entranceThemeReady = false;
    let entranceThemeRevision = 0;
    let extensionWasActive = document.body.dataset.module === "self-extension";
    const applyPetTheme = () => {
      if (!sourceImage.complete || !sourceImage.naturalWidth) return;
      const accent = getComputedStyle(document.body).getPropertyValue("--v2-accent").trim()
        || "#0e7773";
      const themedSource = createThemedPetDataUrl(sourceImage, accent);
      if (themedSource) image.src = themedSource;
      image.dataset.themeRole = "user";
      if (!entranceSourceImage.complete || !entranceSourceImage.naturalWidth) return;
      const revision = ++entranceThemeRevision;
      entranceThemeReady = false;
      const themedEntranceSource = createThemedPetDataUrl(entranceSourceImage, accent);
      if (!themedEntranceSource) return;
      themedEntranceImage.addEventListener("load", () => {
        if (revision !== entranceThemeRevision) return;
        entranceThemeReady = true;
        if (entranceRequested) playEntrance();
      }, { once: true });
      themedEntranceImage.src = themedEntranceSource;
    };
    sourceImage.addEventListener("load", () => applyPetTheme(), { once: true });
    sourceImage.src = image.getAttribute("src");
    entranceSourceImage.addEventListener("load", () => applyPetTheme(), { once: true });
    entranceSourceImage.src = "/assets/pets/self-extension-cat-entrance.png?v=3";
    const tailSourceCanvas = document.createElement("canvas");
    const tailSourceContext = tailSourceCanvas.getContext("2d");
    const tailPoints = [
      [350, 165], [400, 166], [416, 190], [414, 400], [399, 450], [342, 464],
      [330, 442], [347, 419], [361, 380], [367, 228], [345, 198],
    ];
    const tailMotionFrames = [
      [0, 0, 0, 0, 0, 0],
      [0, -5, -11, -7, 7, 17],
      [0, -9, -20, -13, 13, 30],
      [0, -13, -27, -17, 19, 41],
      [0, -16, -32, -19, 24, 48],
      [0, -9, -19, -11, 13, 31],
      [0, -4, -9, -5, 6, 14],
      [0, 0, 0, 0, 0, 0],
      [0, 2, 5, 3, -2, -6],
      [0, 3, 7, 4, -3, -8],
      [0, 1, 3, 2, -1, -3],
      [0, 0, 0, 0, 0, 0],
    ];
    const interpolateCubic = (before, start, end, after, amount, clampToSegment = false) => {
      const amountSquared = amount * amount;
      const amountCubed = amountSquared * amount;
      const interpolated = 0.5 * (
        (2 * start)
        + (-before + end) * amount
        + (2 * before - 5 * start + 4 * end - after) * amountSquared
        + (-before + 3 * start - 3 * end + after) * amountCubed
      );
      if (!clampToSegment) return interpolated;
      return Math.max(Math.min(start, end), Math.min(Math.max(start, end), interpolated));
    };
    const getTailPose = (progress) => {
      const framePosition = Math.max(0, Math.min(1, progress)) * (tailMotionFrames.length - 1);
      const frameIndex = Math.min(tailMotionFrames.length - 2, Math.floor(framePosition));
      const amount = framePosition - frameIndex;
      const beforeFrame = tailMotionFrames[Math.max(0, frameIndex - 1)];
      const startFrame = tailMotionFrames[frameIndex];
      const endFrame = tailMotionFrames[frameIndex + 1];
      const afterFrame = tailMotionFrames[Math.min(tailMotionFrames.length - 1, frameIndex + 2)];
      return startFrame.map((offset, index) => interpolateCubic(
        beforeFrame[index], offset, endFrame[index], afterFrame[index], amount, true,
      ));
    };
    const sampleTailOffset = (pose, distanceFromBase) => {
      const position = Math.max(0, Math.min(1, distanceFromBase)) * (pose.length - 1);
      const index = Math.min(pose.length - 2, Math.floor(position));
      const amount = position - index;
      const before = pose[Math.max(0, index - 1)];
      const start = pose[index];
      const end = pose[index + 1];
      const after = pose[Math.min(pose.length - 1, index + 2)];
      return interpolateCubic(before, start, end, after, amount);
    };
    const traceTail = (context, scaleX, scaleY) => {
      context.beginPath();
      tailPoints.forEach(([x, y], index) => {
        const method = index ? "lineTo" : "moveTo";
        context[method](x * scaleX, y * scaleY);
      });
      context.closePath();
    };
    const stopTailWave = () => {
      window.clearTimeout(petTailTimer);
      petTailTimer = null;
      if (petTailFrame !== null) window.cancelAnimationFrame(petTailFrame);
      petTailFrame = null;
      tailWaveQueued = false;
      tailWaveSequenceActive = false;
      tailWaveReplaying = false;
      delete pet.dataset.tailWaving;
      tailContext.clearRect(0, 0, tailCanvas.width, tailCanvas.height);
    };
    const stopEntrance = () => {
      if (entranceAnimationFrame !== null) {
        window.cancelAnimationFrame(entranceAnimationFrame);
        entranceAnimationFrame = null;
      }
      delete pet.dataset.entering;
      entranceCanvas.style.removeProperty("transform");
      entranceContext.clearRect(0, 0, entranceCanvas.width, entranceCanvas.height);
    };
    const drawEntranceKeyframe = (frameIndex) => {
      entranceContext.drawImage(
        themedEntranceImage,
        frameIndex * ENTRANCE_CELL_SIZE,
        0,
        ENTRANCE_CELL_SIZE,
        ENTRANCE_CELL_SIZE,
        0,
        0,
        entranceCanvas.width,
        entranceCanvas.height,
      );
    };
    const drawEntrancePose = (progress) => {
      let activeFrame;
      let travelProgress = 1;
      let stepBob = 0;
      if (progress < ENTRANCE_WALK_END) {
        const walkProgress = Math.max(0, progress / ENTRANCE_WALK_END);
        const walkStepPosition = walkProgress * ENTRANCE_WALK_STEPS;
        const completedSteps = Math.min(
          ENTRANCE_WALK_STEPS - 1,
          Math.floor(walkStepPosition),
        );
        const stepProgress = walkStepPosition - completedSteps;
        const easedStepProgress = 0.5 - (Math.cos(Math.PI * stepProgress) / 2);
        travelProgress = (completedSteps + easedStepProgress) / ENTRANCE_WALK_STEPS;
        stepBob = -Math.sin(Math.PI * stepProgress) * 2.8;
        const walkPoseIndex = Math.min(
          ENTRANCE_WALK_POSES.length - 1,
          Math.round(walkProgress * (ENTRANCE_WALK_POSES.length - 1)),
        );
        activeFrame = ENTRANCE_WALK_POSES[walkPoseIndex];
      } else {
        const settleProgress = (progress - ENTRANCE_WALK_END) / (1 - ENTRANCE_WALK_END);
        activeFrame = ENTRANCE_SETTLE_START_FRAME + Math.round(
          settleProgress * (ENTRANCE_KEYFRAME_COUNT - ENTRANCE_SETTLE_START_FRAME - 1),
        );
      }
      entranceContext.clearRect(0, 0, entranceCanvas.width, entranceCanvas.height);
      drawEntranceKeyframe(activeFrame);
      return { travelProgress, stepBob };
    };
    function playEntrance() {
      if (!entranceRequested || !entranceThemeReady
        || document.visibilityState !== "visible"
        || document.body.dataset.module !== "self-extension") return;
      entranceRequested = false;
      stopEntrance();
      stopTailWave();
      delete pet.dataset.blinking;
      pet.dataset.mood = "idle";
      pet.dataset.entering = "true";
      const startedAt = performance.now();
      const renderEntrance = (now) => {
        if (document.visibilityState !== "visible"
          || document.body.dataset.module !== "self-extension") {
          stopEntrance();
          return;
        }
        const progress = Math.min(1, (now - startedAt) / ENTRANCE_DURATION_MS);
        const entrancePose = drawEntrancePose(progress);
        const horizontalOffset = (1 - entrancePose.travelProgress) * (pet.offsetWidth + 34);
        entranceCanvas.style.transform = `translate3d(${horizontalOffset}px, ${entrancePose.stepBob}px, 0)`;
        if (progress < 1) {
          entranceAnimationFrame = window.requestAnimationFrame(renderEntrance);
          return;
        }
        entranceAnimationFrame = null;
        delete pet.dataset.entering;
        entranceCanvas.style.removeProperty("transform");
        entranceContext.clearRect(0, 0, entranceCanvas.width, entranceCanvas.height);
        if (document.body.dataset.module === "self-extension") {
          say("自扩展工作台已就绪", "happy");
        }
      };
      entranceAnimationFrame = window.requestAnimationFrame(renderEntrance);
    }
    const requestEntrance = () => {
      entranceRequested = true;
      if (entranceThemeReady) playEntrance();
    };
    const drawTailWaveFrame = (progress) => {
      if (!image.complete || !image.naturalWidth || !tailSourceContext) return false;
      const width = image.naturalWidth;
      const height = image.naturalHeight;
      if (tailCanvas.width !== width || tailCanvas.height !== height) {
        tailCanvas.width = width;
        tailCanvas.height = height;
      }
      if (tailSourceCanvas.width !== width || tailSourceCanvas.height !== height) {
        tailSourceCanvas.width = width;
        tailSourceCanvas.height = height;
      }
      const scaleX = width / 512;
      const scaleY = height / 512;
      const tailTop = 171 * scaleY;
      const tailBottom = 459 * scaleY;
      const sliceHeight = Math.max(2, Math.round(2 * scaleY));
      tailContext.clearRect(0, 0, width, height);
      tailContext.drawImage(image, 0, 0, width, height);
      tailContext.save();
      tailContext.globalCompositeOperation = "destination-out";
      traceTail(tailContext, scaleX, scaleY);
      tailContext.fill();
      tailContext.lineWidth = 10 * Math.max(scaleX, scaleY);
      tailContext.lineJoin = "round";
      tailContext.stroke();
      tailContext.restore();
      tailSourceContext.clearRect(0, 0, width, height);
      tailSourceContext.save();
      traceTail(tailSourceContext, scaleX, scaleY);
      tailSourceContext.clip();
      tailSourceContext.drawImage(image, 0, 0, width, height);
      tailSourceContext.restore();
      const tailPose = getTailPose(progress);
      for (let y = tailTop; y < tailBottom; y += sliceHeight) {
        const distanceFromBase = (tailBottom - y) / (tailBottom - tailTop);
        const offset = sampleTailOffset(tailPose, distanceFromBase) * scaleX;
        tailContext.drawImage(
          tailSourceCanvas,
          0, y, width, sliceHeight + 1,
          offset, y, width, sliceHeight + 1,
        );
      }
      return true;
    };
    const runTailWave = (isReplay = false) => {
      petTailTimer = null;
      if (document.visibilityState !== "visible"
        || document.body.dataset.module !== "self-extension"
        || !image.complete
        || !drawTailWaveFrame(0)) {
        stopTailWave();
        return;
      }
      const startedAt = performance.now();
      tailWaveSequenceActive = true;
      tailWaveReplaying = isReplay;
      pet.dataset.tailWaving = "true";
      const renderTailWave = (now) => {
        const progress = Math.min(1, (now - startedAt) / 1900);
        if (!drawTailWaveFrame(progress)) {
          stopTailWave();
          return;
        }
        if (progress < 1) {
          petTailFrame = window.requestAnimationFrame(renderTailWave);
          return;
        }
        petTailFrame = null;
        delete pet.dataset.tailWaving;
        tailContext.clearRect(0, 0, tailCanvas.width, tailCanvas.height);
        if (!tailWaveReplaying && tailWaveQueued) {
          tailWaveQueued = false;
          tailWaveReplaying = true;
          petTailTimer = window.setTimeout(() => runTailWave(true), 180);
          return;
        }
        tailWaveSequenceActive = false;
        tailWaveReplaying = false;
        tailWaveQueued = false;
      };
      petTailFrame = window.requestAnimationFrame(renderTailWave);
    };
    const requestTailWave = () => {
      if (pet.dataset.entering === "true") return;
      if (tailWaveSequenceActive) {
        if (!tailWaveReplaying) tailWaveQueued = true;
        return;
      }
      runTailWave();
    };
    const scheduleBlink = (delay = 2800 + Math.random() * 4200) => {
      window.clearTimeout(petBlinkTimer);
      petBlinkTimer = window.setTimeout(() => {
        if (document.visibilityState !== "visible"
          || document.body.dataset.module !== "self-extension"
          || pet.dataset.entering === "true") {
          scheduleBlink();
          return;
        }
        pet.dataset.blinking = "true";
        window.clearTimeout(petBlinkResetTimer);
        petBlinkResetTimer = window.setTimeout(() => {
          delete pet.dataset.blinking;
          if (Math.random() < 0.22) {
            petBlinkTimer = window.setTimeout(() => {
              pet.dataset.blinking = "true";
              petBlinkResetTimer = window.setTimeout(() => {
                delete pet.dataset.blinking;
                scheduleBlink();
              }, 135);
            }, 145);
          } else {
            scheduleBlink();
          }
        }, 135);
      }, delay);
    };
    scheduleBlink(1200 + Math.random() * 1600);
    const phrases = [
      "嗨，我会陪你学习新能力",
      "拖动我可以换个位置",
      "玩具动作和车端设备都能一起编排",
      "虚拟运行重启后，我也会恢复待命",
      "点击车端动作，我会帮你盯着执行状态",
    ];
    const pointer = { active: false, moved: false, x: 0, y: 0, startX: 0, startY: 0 };

    const animateMouth = () => {
      if (pet.dataset.entering === "true") return;
      mouth.getAnimations?.().forEach((animation) => animation.cancel());
      mouth.animate?.(
        [
          { opacity: 1, offset: 0 },
          { opacity: 1, offset: 0.06 },
          { opacity: 0, offset: 0.09 },
          { opacity: 0, offset: 0.23 },
          { opacity: 1, offset: 0.26 },
          { opacity: 1, offset: 0.38 },
          { opacity: 0, offset: 0.41 },
          { opacity: 0, offset: 0.55 },
          { opacity: 1, offset: 0.58 },
          { opacity: 1, offset: 0.7 },
          { opacity: 0, offset: 0.73 },
          { opacity: 0, offset: 0.87 },
          { opacity: 1, offset: 0.9 },
          { opacity: 1, offset: 1 },
        ],
        { duration: 1260, easing: "linear" },
      );
    };

    const say = (message, mood = "talking") => {
      bubble.textContent = message;
      pet.dataset.mood = mood;
      animateMouth();
      window.clearTimeout(Number(pet.dataset.moodTimer || 0));
      pet.dataset.moodTimer = String(window.setTimeout(() => {
        pet.dataset.mood = "idle";
      }, 2600));
    };

    pet.addEventListener("pointerenter", () => {
      if (pet.dataset.entering === "true") return;
      requestTailWave();
      if (pet.dataset.mood === "idle") animateMouth();
    });

    const clampPosition = (x, y) => {
      const edgeMargin = 18;
      const maxLeftShift = Math.max(0, window.innerWidth - pet.offsetWidth - edgeMargin * 2);
      const maxUpShift = Math.max(0, window.innerHeight - pet.offsetHeight - edgeMargin * 2);
      return {
        x: Math.max(-maxLeftShift, Math.min(0, x)),
        y: Math.max(-maxUpShift, Math.min(0, y)),
      };
    };

    body.addEventListener("pointerdown", (event) => {
      if (event.button !== 0 || pet.dataset.entering === "true") return;
      pointer.active = true;
      pointer.moved = false;
      pointer.startX = event.clientX;
      pointer.startY = event.clientY;
      pointer.x = Number(pet.dataset.x || 0);
      pointer.y = Number(pet.dataset.y || 0);
      body.setPointerCapture?.(event.pointerId);
      pet.dataset.dragging = "true";
    });
    body.addEventListener("pointermove", (event) => {
      if (!pointer.active) return;
      const deltaX = event.clientX - pointer.startX;
      const deltaY = event.clientY - pointer.startY;
      pointer.moved ||= Math.hypot(deltaX, deltaY) > 4;
      const position = clampPosition(pointer.x + deltaX, pointer.y + deltaY);
      pet.dataset.x = String(position.x);
      pet.dataset.y = String(position.y);
      pet.style.setProperty("--pet-x", `${position.x}px`);
      pet.style.setProperty("--pet-y", `${position.y}px`);
    });
    const endDrag = () => {
      pointer.active = false;
      delete pet.dataset.dragging;
    };
    body.addEventListener("pointerup", endDrag);
    body.addEventListener("pointercancel", endDrag);
    body.addEventListener("click", () => {
      if (pointer.moved || pet.dataset.entering === "true") return;
      requestTailWave();
      petPhraseIndex = (petPhraseIndex + 1) % phrases.length;
      say(phrases[petPhraseIndex], petPhraseIndex % 2 ? "happy" : "talking");
    });
    window.addEventListener("resize", () => {
      const position = clampPosition(Number(pet.dataset.x || 0), Number(pet.dataset.y || 0));
      pet.dataset.x = String(position.x);
      pet.dataset.y = String(position.y);
      pet.style.setProperty("--pet-x", `${position.x}px`);
      pet.style.setProperty("--pet-y", `${position.y}px`);
    });
    window.addEventListener("cognitive-agent:module-change", (event) => {
      const extensionIsActive = event.detail?.module === "self-extension";
      const enteredExtension = extensionIsActive && !extensionWasActive;
      extensionWasActive = extensionIsActive;
      if (enteredExtension) {
        requestEntrance();
      } else if (!extensionIsActive) {
        entranceRequested = false;
        stopEntrance();
      }
    });
    petTimer = window.setInterval(() => {
      if (document.visibilityState !== "visible"
        || document.body.dataset.module !== "self-extension"
        || pet.dataset.entering === "true") return;
      petPhraseIndex = (petPhraseIndex + 1) % phrases.length;
      say(phrases[petPhraseIndex]);
    }, 14000);
    window.addEventListener("pagehide", () => {
      window.clearInterval(petTimer);
      window.clearTimeout(petBlinkTimer);
      window.clearTimeout(petBlinkResetTimer);
      stopEntrance();
      stopTailWave();
    });
  }

  function bindEvents() {
    bindGscuTcpDialogEvents();
    bindPetSettingsDialogEvents();
    $$('[data-extension-mode]').forEach((button) => {
      button.addEventListener("click", () => setMode(button.dataset.extensionMode));
    });
    $("#extensionHardwareGrid").addEventListener("click", (event) => {
      const add = event.target.closest("[data-add-type]");
      if (add) return openAdd(add.dataset.addType);
      const pageButton = event.target.closest("[data-extension-page]");
      if (pageButton) {
        const typeKey = pageButton.dataset.extensionPage;
        pages[typeKey] = Math.max(
          0,
          (pages[typeKey] || 0) + Number(pageButton.dataset.pageDirection),
        );
        renderHardwareGrid();
        window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
        return;
      }
      const remove = event.target.closest("[data-delete-extension-device]");
      if (remove) return deleteHardware(remove.dataset.deleteExtensionDevice);
      const forget = event.target.closest("[data-forget-extension-capability]");
      if (forget) return forgetCapability(forget.dataset.forgetExtensionCapability);
      const learn = event.target.closest("[data-learn-extension-capability]");
      if (learn) return openLearn(learn.dataset.learnExtensionCapability);
      const run = event.target.closest("[data-run-extension-capability]");
      if (run) runCapability(run.dataset.runExtensionCapability);
    });
    $("#extensionHardwareGrid").addEventListener("change", (event) => {
      const selector = event.target.closest("[data-extension-device-select]");
      if (!selector) return;
      state.selectedDeviceByType[selector.dataset.extensionDeviceSelect] = selector.value;
      pages[selector.dataset.extensionDeviceSelect] = 0;
      saveState();
      renderHardwareGrid();
      window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
    });
    $("#extensionTypeChooser").addEventListener("click", (event) => {
      const choice = event.target.closest("[data-extension-type-choice]");
      if (!choice) return;
      selectedAddType = choice.dataset.extensionTypeChoice;
      renderTypeChooser();
      window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
    });
    $("#extensionAddForm").addEventListener("submit", addHardware);
    $("#extensionContinueLearn").addEventListener("click", () => {
      try {
        learning.draft = collectLearningDraft();
        showLearnPage(2);
      } catch (error) {
        showToast(error.message, "error");
      }
    });
    $("#extensionStartLearn").addEventListener("click", startLearning);
    $("#extensionCancelLearn").addEventListener("click", cancelLearning);
    $("#extensionTestEmit").addEventListener("click", testLearning);
    $("#extensionConfirmLearn").addEventListener("click", () => { void confirmLearning(); });
    $("#extensionLearnDialog").addEventListener("cancel", (event) => {
      if (learning.phase === "listening") {
        event.preventDefault();
        cancelLearning().then(() => closeDialog("extensionLearnDialog"));
      }
    });
    $("#extensionLearnedGrid").addEventListener("click", (event) => {
      const switcher = event.target.closest("[data-switch-extension-mode]");
      if (switcher) return setMode(switcher.dataset.switchExtensionMode);
      const run = event.target.closest("[data-run-extension-capability]");
      if (run) runCapability(run.dataset.runExtensionCapability);
    });
    $("#extensionExecuteButton").addEventListener(
      "click",
      () => executeInstruction($("#extensionUtterance").value),
    );
    $("#extensionUtterance").addEventListener("keydown", (event) => {
      if (event.key === "Enter" && !event.shiftKey) {
        event.preventDefault();
        executeInstruction(event.currentTarget.value);
      }
    });
    $("#extensionFooterRefresh").addEventListener("click", () => refreshHealth(true));
    $("#extensionResetButton").addEventListener("click", () => {
      $("#extensionResetConfirm").value = "";
      $("#extensionConfirmReset").disabled = true;
      openDialog("extensionResetDialog");
    });
    $("#extensionResetConfirm").addEventListener("input", (event) => {
      $("#extensionConfirmReset").disabled = event.currentTarget.value.trim() !== "清空";
    });
    $("#extensionConfirmReset").addEventListener("click", resetSession);
    $$('[data-close-extension-dialog]').forEach((button) => {
      button.addEventListener("click", async () => {
        if (button.dataset.closeExtensionDialog === "extensionLearnDialog"
          && learning.phase === "listening") await cancelLearning();
        closeDialog(button.dataset.closeExtensionDialog);
      });
    });
    window.addEventListener("cognitive-agent:module-change", (event) => {
      if (event.detail?.module === "self-extension") {
        setMode(activeMode);
        refreshHealth();
      } else {
        syncSharedTwinMount();
      }
    });
    window.addEventListener("cognitive-agent:result", (event) => {
      renderAuthoritativeVehicleState(event.detail);
    });
    document.addEventListener("visibilitychange", () => {
      if (document.visibilityState === "visible"
        && document.body.dataset.module === "self-extension") refreshHealth();
    });
    window.addEventListener("pagehide", stopHealthPolling);
    window.addEventListener("pageshow", () => {
      startHealthPolling();
      if (document.visibilityState === "visible"
        && document.body.dataset.module === "self-extension") refreshHealth();
    });
  }

  function linkedDeviceForCard(uidValue) {
    const uidValueNormalized = normalizeCardUid(uidValue);
    if (!uidValueNormalized) return null;
    return state.devices.find(
      (device) => normalizeCardUid(device.cardUid) === uidValueNormalized,
    ) || null;
  }

  function inferLegacyToyType(profile) {
    const text = [
      profile?.name,
      profile?.model,
      ...(Array.isArray(profile?.actions)
        ? profile.actions.flatMap((action) => [action?.name, action?.code])
        : []),
    ].join(" ").toLowerCase();
    if (/(氛围|灯|亮度|颜色|rgb|light|colour|color)/i.test(text)) return "light";
    if (/(声音|音乐|音量|播放|sound|music|volume)/i.test(text)) return "sound";
    if (/(玩偶|娃娃|唱歌|说话|doll)/i.test(text)) return "doll";
    if (/(机械|升降|伸缩|正转|反转|mechanical)/i.test(text)) return "mechanical";
    if (/(前进|后退|左转|右转|移动|小车|action|motion)/i.test(text)) return "action";
    return "other";
  }

  function legacyIdentifier(prefix, value) {
    const suffix = String(value || "profile")
      .replace(/[^a-z0-9_-]+/gi, "-")
      .replace(/^-+|-+$/g, "")
      .slice(0, 64) || "profile";
    let candidate = `${prefix}-${suffix}`;
    let index = 2;
    while (state.devices.some((device) => device.id === candidate)) {
      candidate = `${prefix}-${suffix}-${index}`;
      index += 1;
    }
    return candidate;
  }

  function legacyCapabilityRisk(action) {
    const text = `${action?.name || ""} ${action?.code || ""}`;
    return /(前进|后退|左转|右转|移动|旋转|升降|伸缩)/.test(text) ? "high" : "low";
  }

  function importLegacyProfiles(value) {
    if (!Array.isArray(value)) return { devices: 0, actions: 0 };
    let importedDevices = 0;
    let importedActions = 0;
    let changed = false;

    value.forEach((profile, profileIndex) => {
      if (!profile || typeof profile !== "object") return;
      const legacyActions = Array.isArray(profile.actions)
        ? profile.actions.filter((action) => action?.learned && validSlot(action.slot))
        : [];
      const cardUid = normalizeCardUid(profile.cardUid);
      if (!cardUid && !legacyActions.length) return;
      const legacyProfileId = String(profile.id || `profile-${profileIndex}`);
      const type = inferLegacyToyType(profile);
      let device = cardUid ? linkedDeviceForCard(cardUid) : null;
      device ||= state.devices.find((item) => item.legacyProfileId === legacyProfileId) || null;

      if (!device) {
        device = {
          id: legacyIdentifier("legacy-toy", legacyProfileId),
          name: String(profile.name || `玩具 ${profile.toyNumber || nextToyNumber()}`),
          type,
          aliases: [String(profile.name || "玩具")],
          toyNumber: String(profile.toyNumber || nextToyNumber()),
          cardUid: cardUid || null,
          model: String(profile.model || "ir-toy-learning 导入外设"),
          legacyProfileId,
          importedFrom: "ir-toy-learning",
          createdAt: new Date().toISOString(),
        };
        state.devices.push(device);
        importedDevices += 1;
        changed = true;
      } else {
        const before = JSON.stringify([
          device.name,
          device.type,
          device.toyNumber,
          device.cardUid,
          device.legacyProfileId,
        ]);
        if (!device.cardUid && cardUid) device.cardUid = cardUid;
        if (!device.toyNumber && profile.toyNumber) device.toyNumber = String(profile.toyNumber);
        if (!device.legacyProfileId) device.legacyProfileId = legacyProfileId;
        if (device.type === "other" && type !== "other") device.type = type;
        if (/^玩具\s*\d+$/i.test(device.name) && profile.name) device.name = String(profile.name);
        device.importedFrom ||= "ir-toy-learning";
        changed ||= before !== JSON.stringify([
          device.name,
          device.type,
          device.toyNumber,
          device.cardUid,
          device.legacyProfileId,
        ]);
      }

      state.selectedDeviceByType[device.type] = device.id;
      legacyActions.forEach((action, actionIndex) => {
        const slot = Number(action.slot);
        const name = String(action.name || action.code || `红外动作 ${slot}`);
        const legacyActionId = String(action.id || `${legacyProfileId}:${actionIndex}:${slot}`);
        const aliases = [...new Set([
          name,
          typeof action.code === "string" ? action.code : "",
        ].filter(Boolean))];
        let capability = state.capabilities.find((item) => (
          item.deviceId === device.id
          && (item.legacyActionId === legacyActionId
            || item.name === name)
        ));
        if (!capability) {
          capability = {
            id: uid("legacy-cap"),
            deviceId: device.id,
            key: `legacy_${slot}`,
            createdAt: new Date().toISOString(),
          };
          state.capabilities.push(capability);
          importedActions += 1;
          changed = true;
        }
        // A signal learned again in N7Web is authoritative. Repeated NFC snapshots
        // may still contain the old ir-toy-learning metadata and must not roll it back.
        if (capability.signalSource === "n7web") return;
        const before = JSON.stringify(capability);
        Object.assign(capability, {
          name,
          aliases,
          category: type === "light" ? "effect" : "custom",
          risk: legacyCapabilityRisk(action),
          slot,
          status: "learned",
          verified: true,
          enabled: true,
          fingerprint: action.fingerprint || capability.fingerprint || null,
          learnedAt: action.updatedAt || capability.learnedAt || new Date().toISOString(),
          legacyActionId,
          importedFrom: "ir-toy-learning",
        });
        changed ||= before !== JSON.stringify(capability);
      });
    });

    if (changed) {
      state.sessionStartedAt ||= new Date().toISOString();
      saveState();
      renderAll();
      void syncPeripheralCatalog();
    }
    return { devices: importedDevices, actions: importedActions };
  }

  function readSameOriginLegacyProfiles() {
    try {
      return JSON.parse(localStorage.getItem(LEGACY_PROFILE_KEY) || "null");
    } catch (_error) {
      return null;
    }
  }

  function requestLegacyProfiles(bridgeUrl) {
    return new Promise((resolve) => {
      const iframe = document.createElement("iframe");
      const bridgeOrigin = new URL(bridgeUrl).origin;
      const requestId = uid("legacy-import");
      let settled = false;
      const cleanup = (profiles = null) => {
        if (settled) return;
        settled = true;
        window.clearTimeout(timer);
        window.removeEventListener("message", receive);
        iframe.remove();
        resolve(profiles);
      };
      const request = () => iframe.contentWindow?.postMessage({
        type: "N7WEB_REQUEST_IR_TOY_PROFILES",
        requestId,
      }, bridgeOrigin);
      const receive = (event) => {
        if (event.origin !== bridgeOrigin || event.source !== iframe.contentWindow) return;
        if (event.data?.type === "IR_TOY_LEGACY_BRIDGE_READY") {
          request();
          return;
        }
        if (event.data?.type !== "IR_TOY_LEGACY_PROFILES"
          || event.data.requestId !== requestId) return;
        cleanup(Array.isArray(event.data.profiles) ? event.data.profiles : []);
      };
      const timer = window.setTimeout(() => cleanup(), 1800);
      iframe.src = bridgeUrl;
      iframe.hidden = true;
      iframe.setAttribute("aria-hidden", "true");
      iframe.addEventListener("load", request, { once: true });
      window.addEventListener("message", receive);
      document.body.append(iframe);
    });
  }

  function hasImportableLegacyProfiles(profiles) {
    return Array.isArray(profiles) && profiles.some((profile) => (
      normalizeCardUid(profile?.cardUid)
      || (Array.isArray(profile?.actions)
        && profile.actions.some((action) => action?.learned && validSlot(action.slot)))
    ));
  }

  function legacyBridgeUrls(addresses = []) {
    const currentHostUrl = window.location.hostname
      ? `http://${window.location.hostname}:3001/n7web-profile-bridge.html`
      : null;
    const addressUrls = (Array.isArray(addresses) ? addresses : [])
      .filter((address) => /^(?:\d{1,3}\.){3}\d{1,3}$/.test(String(address)))
      .map((address) => `http://${address}:3001/n7web-profile-bridge.html`);
    return [...new Set([currentHostUrl, ...LEGACY_PROFILE_BRIDGE_URLS, ...addressUrls].filter(Boolean))];
  }

  async function migrateLegacyProfiles(addresses = []) {
    if (legacyMigrationCompleted) return;
    if (!legacySameOriginChecked) {
      legacySameOriginChecked = true;
      const sameOriginProfiles = readSameOriginLegacyProfiles();
      if (hasImportableLegacyProfiles(sameOriginProfiles)) {
        const imported = importLegacyProfiles(sameOriginProfiles);
        legacyMigrationCompleted = true;
        if (imported.devices || imported.actions) {
          showToast(`已迁移 ${imported.devices} 个玩具、${imported.actions} 项红外动作。`, "success");
        }
        return;
      }
    }
    for (const bridgeUrl of legacyBridgeUrls(addresses)) {
      if (legacyBridgeAttempts.has(bridgeUrl)) continue;
      legacyBridgeAttempts.add(bridgeUrl);
      const profiles = await requestLegacyProfiles(bridgeUrl);
      if (!hasImportableLegacyProfiles(profiles)) continue;
      const imported = importLegacyProfiles(profiles);
      legacyMigrationCompleted = true;
      if (imported.devices || imported.actions) {
        showToast(`已从 ir-toy-learning 迁移 ${imported.devices} 个玩具、${imported.actions} 项红外动作。`, "success");
      }
      return;
    }
  }

  function nextToyNumber() {
    const highest = state.devices.reduce((current, device) => {
      const parsed = Number.parseInt(device.toyNumber || "", 10);
      return Number.isFinite(parsed) ? Math.max(current, parsed) : current;
    }, 0);
    return String(highest + 1).padStart(3, "0");
  }

  function petCards() {
    return Array.isArray(petCardSnapshot.cards) ? petCardSnapshot.cards : [];
  }

  function petCardHasUnsavedChanges(card) {
    const draft = petCardDrafts.get(card?.id);
    if (!card || !draft) return false;
    return String(draft.pet_name ?? "") !== String(card.pet_name ?? "")
      || String(draft.action ?? "") !== String(card.action ?? "");
  }

  function petCardCanBind(card) {
    return Boolean(card?.saved) && !petCardHasUnsavedChanges(card);
  }

  function linkedPetForCard(uidValue) {
    const normalizedUid = normalizeCardUid(uidValue);
    if (!normalizedUid) return null;
    return petCards().find(
      (card) => normalizeCardUid(card.nfc_id) === normalizedUid,
    ) || null;
  }

  function petCardStatus(card) {
    const publisher = petCardSnapshot.publisher || {};
    const active = publisher.active_pet_id === card.id;
    if (!card.saved || petCardHasUnsavedChanges(card)) {
      return { state: "editing", label: "待保存" };
    }
    if (active && publisher.state === "bursting") {
      return { state: "bursting", label: "3 帧发送中" };
    }
    if (active && publisher.state === "burst_complete") {
      return { state: "complete", label: "已发送 3 帧" };
    }
    if (active && publisher.state === "burst_failed") {
      return { state: "error", label: "3 帧发送失败" };
    }
    if (card.nfc_id) return { state: "bound", label: "已绑定 NFC" };
    return { state: "unbound", label: "待绑定" };
  }

  function applyPetCardSnapshot(value, { render = true } = {}) {
    if (!value || typeof value !== "object") return false;
    const parsedRevision = Number(value.revision ?? -1);
    const nextRevision = Number.isFinite(parsedRevision) ? parsedRevision : -1;
    if (nextRevision < petCardSnapshot.revision) return false;
    const cards = Array.isArray(value.cards)
      ? value.cards.filter((card) => card && typeof card === "object")
      : [];
    const publisher = value.publisher && typeof value.publisher === "object"
      ? value.publisher
      : {};
    const next = {
      revision: nextRevision,
      cards,
      publisher: {
        state: String(publisher.state || "stopped"),
        topic: String(publisher.topic || "n7/pet"),
        burst_count: Number(publisher.burst_count || 3),
        burst_window_ms: Number(publisher.burst_window_ms || 1000),
        burst_attempt_count: Number(publisher.burst_attempt_count || 0),
        burst_published_count: Number(publisher.burst_published_count || 0),
        active_pet_id: publisher.active_pet_id || null,
        active_nfc_id: publisher.active_nfc_id || null,
        last_published_at: publisher.last_published_at || null,
        last_delivery_status: publisher.last_delivery_status || null,
        publish_count: Number(publisher.publish_count || 0),
        last_error: publisher.last_error || null,
      },
    };
    const cardsChanged = JSON.stringify(petCardSnapshot.cards) !== JSON.stringify(cards);
    const publisherChanged = JSON.stringify(petCardSnapshot.publisher) !== JSON.stringify(next.publisher);
    if (!cardsChanged && !publisherChanged && next.revision === petCardSnapshot.revision) {
      return false;
    }
    petCardSnapshot = next;
    if (selectedPetCardId && !cards.some((card) => card.id === selectedPetCardId)) {
      selectedPetCardId = null;
    }
    if (render) {
      renderNfcDialog();
      if (cardsChanged) {
        renderPetSettingsDialog();
        renderUnifiedExtensionView?.();
      }
      else updatePetPublisherIndicators();
    }
    return true;
  }

  async function hydratePetCards() {
    applyPetCardSnapshot(await api("pets"));
  }

  function nextPetCardName() {
    const used = new Set(petCards().map((card) => String(card.pet_name || "")));
    let index = petCards().length + 1;
    while (used.has(`宠物 ${index}`)) index += 1;
    return `宠物 ${index}`;
  }

  async function createPetCard(button = null) {
    if (button) button.disabled = true;
    try {
      const response = await api("pets", {
        method: "POST",
        body: JSON.stringify({
          pet_name: nextPetCardName(),
          action: "待设置",
        }),
      });
      selectedPetCardId = response.card?.id || null;
      applyPetCardSnapshot(response);
      showToast("已添加宠物卡片，请编辑并保存后再绑定 NFC。", "success");
      window.setTimeout(() => {
        const card = $(`[data-pet-card-id="${selectedPetCardId}"]`, $("#extensionPetSettingsDialog"));
        card?.scrollIntoView({ behavior: "smooth", block: "nearest" });
        $('[data-pet-field="pet_name"]', card)?.focus();
      }, 0);
    } catch (error) {
      showToast(error.message, "error");
    } finally {
      if (button?.isConnected) button.disabled = false;
    }
  }

  async function savePetCard(article, button = null) {
    const cardId = article?.dataset.petCardId;
    const petName = $('[data-pet-field="pet_name"]', article)?.value || "";
    const action = $('[data-pet-field="action"]', article)?.value || "";
    if (!cardId) return;
    if (button) button.disabled = true;
    try {
      const response = await api(`pets/${encodeURIComponent(cardId)}`, {
        method: "PUT",
        body: JSON.stringify({ pet_name: petName, action }),
      });
      petCardDrafts.delete(cardId);
      applyPetCardSnapshot(response);
      showToast("宠物卡片已保存，可通过 NFC 设备授权继续绑定。", "success");
    } catch (error) {
      showToast(error.message, "error");
    } finally {
      if (button?.isConnected) button.disabled = false;
    }
  }

  async function deletePetCard(article, button = null) {
    const cardId = article?.dataset.petCardId;
    const petName = $('[data-pet-field="pet_name"]', article)?.value || "该宠物";
    if (!cardId || !window.confirm(`确认删除“${petName}”宠物卡片吗？`)) return;
    if (button) button.disabled = true;
    try {
      const response = await api(`pets/${encodeURIComponent(cardId)}`, {
        method: "DELETE",
      });
      petCardDrafts.delete(cardId);
      applyPetCardSnapshot(response);
      showToast("宠物卡片已删除。", "success");
    } catch (error) {
      showToast(error.message, "error");
      if (button?.isConnected) button.disabled = false;
    }
  }

  async function bindCurrentNfcToPet() {
    const petId = $("#extensionNfcExistingPet")?.value || selectedPetCardId;
    if (!petId) return;
    const petCard = petCards().find((card) => card.id === petId);
    if (!petCardCanBind(petCard)) {
      showToast("请先在“宠物设置”中完成编辑并保存。", "error");
      return;
    }
    const button = $("[data-nfc-bind-pet]");
    if (button) button.disabled = true;
    try {
      const response = await api(`pets/${encodeURIComponent(petId)}/bind-current-nfc`, {
        method: "POST",
        body: "{}",
      });
      selectedPetCardId = petId;
      applyPetCardSnapshot(response);
      renderNfcDialog();
      showToast(`NFC 已绑定宠物“${response.card?.pet_name || "宠物"}”。`, "success");
    } catch (error) {
      showToast(error.message, "error");
    } finally {
      if (button?.isConnected) button.disabled = false;
    }
  }

  async function unbindPetCard(petId) {
    if (!petId) return;
    const button = $(`[data-nfc-unbind-pet="${petId}"]`);
    if (button) button.disabled = true;
    try {
      const response = await api(`pets/${encodeURIComponent(petId)}/unbind`, {
        method: "POST",
        body: "{}",
      });
      applyPetCardSnapshot(response);
      renderNfcDialog();
      showToast("已解除宠物卡片的 NFC 绑定。", "success");
    } catch (error) {
      showToast(error.message, "error");
    } finally {
      if (button?.isConnected) button.disabled = false;
    }
  }

  function renderNfcPetBinding(linkedPet) {
    if (linkedPet) {
      const status = petCardStatus(linkedPet);
      return `<section class="v2-nfc-pet-binding" data-state="${escapeHtml(status.state)}">
        <div><span><i data-lucide="paw-print"></i></span><div><small>已绑定宠物卡片</small><strong>${escapeHtml(linkedPet.pet_name)}</strong><p>${escapeHtml(linkedPet.action)} · 本次识别仅发送 3 帧</p></div></div>
        <div><code>${escapeHtml(linkedPet.nfc_id)}</code><b>${escapeHtml(status.label)}</b><button type="button" data-nfc-unbind-pet="${escapeHtml(linkedPet.id)}">解绑 NFC</button></div>
      </section>`;
    }
    if (!petCards().length) {
      return `<div class="v2-nfc-no-devices v2-nfc-no-pets"><i data-lucide="paw-print"></i><div><strong>暂无宠物卡片</strong><span>请先打开“宠物设置”添加并保存宠物资料。</span></div><button type="button" data-open-pet-settings>打开宠物设置</button></div>`;
    }
    const bindableCards = petCards().filter(petCardCanBind);
    if (!bindableCards.length) {
      return `<div class="v2-nfc-no-devices v2-nfc-no-pets"><i data-lucide="save"></i><div><strong>暂无可绑定的已保存卡片</strong><span>请先在“宠物设置”中完成宠物名与动作编辑并保存。</span></div><button type="button" data-open-pet-settings>打开宠物设置</button></div>`;
    }
    const selected = bindableCards.some((card) => card.id === selectedPetCardId)
      ? selectedPetCardId
      : bindableCards[0].id;
    return `<div class="v2-nfc-existing v2-nfc-pet-existing"><span>绑定宠物卡片</span><div><select id="extensionNfcExistingPet" data-nfc-pet-select>${bindableCards.map((card) => `<option value="${escapeHtml(card.id)}" ${card.id === selected ? "selected" : ""}>${escapeHtml(card.pet_name)} — ${escapeHtml(card.action)}${card.nfc_id ? ` — 当前已绑定 ${escapeHtml(card.nfc_id)}` : ""}</option>`).join("")}</select><button class="v2-extension-primary" type="button" data-nfc-bind-pet>关联宠物卡片</button></div><small>卡片 ID 由当前读卡器中的 NFC 自动写入，不能手动编辑；同一 NFC 只绑定一张宠物卡片。</small></div>`;
  }

  function renderPetCardEditor() {
    const publisher = petCardSnapshot.publisher || {};
    const cards = petCards();
    return `<section class="v2-pet-card-region" aria-labelledby="v2PetCardEditorTitle">
      <header><div><span><i data-lucide="paw-print"></i></span><h4 id="v2PetCardEditorTitle">宠物卡片</h4></div><button type="button" data-pet-add><i data-lucide="plus" data-icon="inline-start"></i><span>添加宠物</span></button></header>
      <div class="v2-pet-card-list">
        ${cards.length ? cards.map((card) => {
          const draft = petCardDrafts.get(card.id) || card;
          const status = petCardStatus(card);
          const activeError = publisher.active_pet_id === card.id
            ? String(publisher.last_error || "")
            : "";
          return `<article class="v2-pet-card" data-pet-card-id="${escapeHtml(card.id)}" data-pet-state="${escapeHtml(status.state)}">
            <header><span><i data-lucide="paw-print"></i></span><strong>${escapeHtml(draft.pet_name || card.pet_name)}</strong><b data-pet-publish-state="${escapeHtml(card.id)}" data-state="${escapeHtml(status.state)}" title="${escapeHtml(activeError || status.label)}">${escapeHtml(status.label)}</b><button type="button" data-pet-delete aria-label="删除宠物卡片" title="删除宠物卡片"><i data-lucide="trash-2"></i></button></header>
            <div class="v2-pet-card-fields">
              <label><span>宠物名</span><input type="text" maxlength="64" value="${escapeHtml(draft.pet_name || "")}" data-pet-field="pet_name" autocomplete="off" /></label>
              <label><span>宠物动作</span><textarea maxlength="160" rows="2" data-pet-field="action">${escapeHtml(draft.action || "")}</textarea></label>
              <label class="v2-pet-nfc-field"><span>卡片 ID</span><div><output>${card.nfc_id ? escapeHtml(card.nfc_id) : "未绑定"}</output></div></label>
            </div>
            <footer><button type="button" data-pet-save><i data-lucide="save"></i><span>保存修改</span></button></footer>
          </article>`;
        }).join("") : `<div class="v2-pet-card-empty"><i data-lucide="paw-print"></i><strong>还没有宠物卡片</strong><button type="button" data-pet-add>添加第一张</button></div>`}
      </div>
    </section>`;
  }

  function renderPetSettingsDialog() {
    const body = $("#extensionPetSettingsBody");
    if (!body) return;
    body.innerHTML = renderPetCardEditor();
    window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
  }

  function openPetSettingsDialog() {
    renderPetSettingsDialog();
    openDialog("extensionPetSettingsDialog");
  }

  function bindPetSettingsDialogEvents() {
    const dialog = $("#extensionPetSettingsDialog");
    if (!dialog || dialog.dataset.petSettingsBound === "true") return;
    dialog.dataset.petSettingsBound = "true";
    dialog.addEventListener("click", (event) => {
      if (event.target.closest('[data-close-extension-dialog="extensionPetSettingsDialog"]')) {
        closeDialog("extensionPetSettingsDialog");
        return;
      }
      const addPet = event.target.closest("[data-pet-add]");
      const article = event.target.closest("[data-pet-card-id]");
      const savePet = event.target.closest("[data-pet-save]");
      const deletePet = event.target.closest("[data-pet-delete]");
      if (addPet) void createPetCard(addPet);
      else if (savePet) void savePetCard(article, savePet);
      else if (deletePet) void deletePetCard(article, deletePet);
    });
    dialog.addEventListener("input", (event) => {
      const field = event.target.closest("[data-pet-field]");
      const article = field?.closest("[data-pet-card-id]");
      if (!field || !article) return;
      const current = petCardDrafts.get(article.dataset.petCardId)
        || petCards().find((card) => card.id === article.dataset.petCardId)
        || {};
      petCardDrafts.set(article.dataset.petCardId, {
        ...current,
        [field.dataset.petField]: field.value,
      });
      const title = $("header strong", article);
      if (field.dataset.petField === "pet_name" && title) {
        title.textContent = field.value.trim() || "未命名宠物";
      }
      updatePetPublisherIndicators();
    });
  }

  function renderDetectedPetCard(card) {
    if (!card) return "";
    const status = petCardStatus(card);
    const publisher = petCardSnapshot.publisher || {};
    const activeError = publisher.active_pet_id === card.id
      ? String(publisher.last_error || "")
      : "";
    return `<article class="v2-pet-presence-card" data-detected-pet-id="${escapeHtml(card.id)}" data-pet-state="${escapeHtml(status.state)}" aria-label="当前识别宠物 ${escapeHtml(card.pet_name)}">
      <header><span><i data-lucide="paw-print"></i></span><div><small>当前识别宠物</small><strong>${escapeHtml(card.pet_name)}</strong></div><b data-pet-publish-state="${escapeHtml(card.id)}" data-state="${escapeHtml(status.state)}" title="${escapeHtml(activeError || status.label)}">${escapeHtml(status.label)}</b></header>
      <dl><div><dt>宠物动作</dt><dd>${escapeHtml(card.action)}</dd></div><div><dt>卡片 ID</dt><dd><code>${escapeHtml(card.nfc_id)}</code></dd></div></dl>
      <footer><span><i data-lucide="radio-tower"></i>${escapeHtml(publisher.topic || "n7/pet")}</span><strong>3 帧 / 1 秒</strong></footer>
    </article>`;
  }

  function updatePetPublisherIndicators() {
    const publisher = petCardSnapshot.publisher || {};
    petCards().forEach((card) => {
      const status = petCardStatus(card);
      $$(`[data-pet-publish-state="${card.id}"]`).forEach((badge) => {
        badge.dataset.state = status.state;
        badge.textContent = status.label;
        badge.title = publisher.active_pet_id === card.id && publisher.last_error
          ? String(publisher.last_error)
          : status.label;
      });
      $$(`[data-pet-card-id="${card.id}"], [data-detected-pet-id="${card.id}"]`).forEach((article) => {
        article.dataset.petState = status.state;
      });
    });
  }

  function nfcReaderNote(reader = nfcSnapshot.reader) {
    if (reader?.online) {
      const firmware = reader.firmware ? ` · PN532 ${reader.firmware}` : "";
      return `${reader.port || "串口"} 已就绪${firmware}`;
    }
    if (reader?.state === "connecting" || reader?.state === "starting") {
      return "正在查找 PN532 / PCR532 读卡器";
    }
    return reader?.error || "请连接 NFC 读卡器并确认 CH340 / CH341 驱动可用";
  }

  function renderNfcDialog() {
    const stage = $("#extensionNfcStage");
    const body = $("#extensionNfcBody");
    const status = $("#extensionNfcReaderStatus");
    const badge = $("#extensionNfcReaderBadge");
    if (!stage || !body || !status || !badge) return;

    const reader = nfcSnapshot.reader || {};
    const card = nfcSnapshot.card;
    const linkedDevice = linkedDeviceForCard(card?.uid);
    const linkedPet = linkedPetForCard(card?.uid);
    const deviceGroups = infraredDeviceGroups().filter((group) => group.deviceId);
    status.textContent = nfcReaderNote(reader);
    badge.textContent = reader.online ? "READER READY" : "READER OFFLINE";
    badge.dataset.state = reader.online ? "online" : "offline";

    if (!reader.online) {
      stage.dataset.state = "offline";
      body.innerHTML = `<div class="v2-nfc-waiting offline"><span class="v2-nfc-reader-visual"><i data-lucide="scan-line"></i><b></b><b></b></span><div><strong>读卡器尚未就绪</strong><p>${escapeHtml(nfcReaderNote(reader))}</p></div></div>`;
    } else if (!card?.uid) {
      stage.dataset.state = "waiting";
      body.innerHTML = `<div class="v2-nfc-waiting"><span class="v2-nfc-reader-visual"><i data-lucide="scan-line"></i><b></b><b></b></span><div><strong>请将 NFC 卡靠近读卡器</strong><p>让卡片在读卡区停留约 1 秒；识别后可将 UID 绑定到宠物卡片或已配置的设备 ID。</p></div></div>`;
    } else if (!linkedDevice && !linkedPet) {
      stage.dataset.state = "new-card";
      body.innerHTML = `<div class="v2-nfc-detected-heading"><span><i data-lucide="badge-plus"></i></span><div><small>检测到未绑定 NFC</small><strong>${escapeHtml(card.uid)}</strong><p>请选择宠物卡片；也可继续关联已有红外设备 ID。</p></div></div>
        ${renderNfcPetBinding(null)}
        ${deviceGroups.length ? `<div class="v2-nfc-existing"><span>绑定对象（设备 ID）</span><div><select id="extensionNfcExistingDevice" data-nfc-device-select>${deviceGroups.map((group) => `<option value="${escapeHtml(group.deviceId)}">${escapeHtml(group.deviceId)} — ${escapeHtml(group.objectNames.join(" / ") || "无对象描述")} — ${group.commands.length} 条命令</option>`).join("")}</select><button class="v2-extension-primary" type="button" data-nfc-bind-existing>关联设备 ID</button></div><small>关联后，该设备的全部命令默认允许执行，可再逐项取消。</small></div>` : `<div class="v2-nfc-no-devices"><i data-lucide="info"></i><div><strong>暂无可绑定的设备 ID</strong><span>请先在 GSCU1B TCP 设置中为已学习红外槽位填写设备 ID。</span></div></div>`}`;
    } else if (linkedPet && !linkedDevice) {
      stage.dataset.state = "recognized";
      body.innerHTML = `<div class="v2-nfc-recognized-heading">
          <span><i data-lucide="paw-print"></i></span>
          <div><small>NFC UID · ${escapeHtml(card.uid)}</small><strong>${escapeHtml(linkedPet.pet_name)}</strong><p>宠物动作：${escapeHtml(linkedPet.action)} · 本次识别在 1 秒内发送 3 帧 n7/pet</p></div>
          <i data-lucide="badge-check"></i>
        </div>
        ${renderNfcPetBinding(linkedPet)}
        ${deviceGroups.length ? `<div class="v2-nfc-existing"><span>继续关联红外设备 ID（可选）</span><div><select id="extensionNfcExistingDevice" data-nfc-device-select>${deviceGroups.map((group) => `<option value="${escapeHtml(group.deviceId)}">${escapeHtml(group.deviceId)} — ${escapeHtml(group.objectNames.join(" / ") || "无对象描述")} — ${group.commands.length} 条命令</option>`).join("")}</select><button class="v2-extension-primary" type="button" data-nfc-bind-existing>关联设备 ID</button></div><small>宠物消息与红外设备授权相互独立，不会覆盖宠物卡片内容。</small></div>` : ""}`;
    } else {
      const group = deviceGroups.find((item) => item.deviceId === linkedDevice.id);
      const capabilities = configuredCapabilities(linkedDevice.id);
      const enabledCount = capabilities.filter((capability) => capability.enabled !== false).length;
      const allEnabled = capabilities.length > 0 && enabledCount === capabilities.length;
      stage.dataset.state = "recognized";
      body.innerHTML = `<div class="v2-nfc-recognized-heading">
          <span data-extension-type="other"><i data-lucide="cpu"></i></span>
          <div><small>NFC UID · ${escapeHtml(card.uid)}</small><strong>${escapeHtml(linkedDevice.id)}</strong><p>控制对象：${escapeHtml(group?.objectNames.join("、") || linkedDevice.name || "无辅助描述")} · ${enabledCount}/${capabilities.length} 条命令已授权</p></div>
          <i data-lucide="badge-check"></i>
        </div>
        ${renderNfcPetBinding(linkedPet)}
        <div class="v2-nfc-capability-heading"><div><strong>允许此 NFC 执行的命令</strong></div><span>${enabledCount}/${capabilities.length} 已选择</span></div>
        ${capabilities.length ? `<label class="v2-nfc-select-all"><input type="checkbox" data-nfc-select-all ${allEnabled ? "checked" : ""} /><span><strong>全选</strong><small>统一允许或禁止当前设备 ID 下的全部命令</small></span></label><div class="v2-nfc-command-list">${capabilities.map((capability) => `<label class="v2-nfc-command-option"><input type="checkbox" data-nfc-capability-enabled="${escapeHtml(capability.id)}" ${capability.enabled !== false ? "checked" : ""} /><span><strong>${escapeHtml(capability.name)}</strong><small>IR ${String(capability.slot).padStart(3, "0")} · ${escapeHtml((capability.aliases || []).join("、"))}</small></span></label>`).join("")}</div>` : `<div class="v2-nfc-no-devices"><i data-lucide="triangle-alert"></i><div><strong>该设备 ID 暂无有效命令</strong><span>槽位可能已删除或改绑到其他设备 ID，请重新检查红外设置。</span></div></div>`}
        <div class="v2-nfc-recognized-actions"><span>复选框状态会持久化为自然语言执行白名单。</span><button type="button" data-nfc-unbind>解绑 NFC</button></div>`;
    }
    window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
  }

  function buildUnifiedNfcDialog() {
    if ($("#extensionNfcDialog")) return;
    const dialog = document.createElement("dialog");
    dialog.className = "v2-extension-dialog v2-nfc-dialog";
    dialog.id = "extensionNfcDialog";
    dialog.innerHTML = `<header><div><h2>NFC 设备授权</h2></div><button type="button" data-close-nfc-dialog aria-label="关闭"><i data-lucide="x"></i></button></header>
      <section class="v2-nfc-stage" id="extensionNfcStage" data-state="waiting">
        <header><span><i data-lucide="scan-line"></i></span><div><h3>NFC 设备绑定</h3><p id="extensionNfcReaderStatus">正在检查读卡器</p></div><b id="extensionNfcReaderBadge" data-state="offline">READER CHECK</b></header>
        <div class="v2-nfc-body" id="extensionNfcBody"></div>
      </section>
      <footer class="v2-nfc-footnote"><i data-lucide="shield-check"></i><span>宠物卡片与 NFC UID 由后端持久化；每次重新识别只在 1 秒内发送 3 帧 n7/pet，随后保持静默。设备 ID 与命令授权逻辑保持不变。</span></footer>`;
    document.body.append(dialog);
  }

  async function syncPeripheralCatalog(device = null) {
    try {
      await api("display-sync", {
        method: "POST",
        body: JSON.stringify({ peripherals: peripheralCatalog(), device }),
      });
    } catch (error) {
      console.warn("外设能力同步失败", error);
    }
  }

  function bindCardToDevice(device, cardUid) {
    if (!device || !cardUid) return;
    const normalizedUid = normalizeCardUid(cardUid);
    state.devices.forEach((item) => {
      if (item.id !== device.id && normalizeCardUid(item.cardUid) === normalizedUid) {
        item.cardUid = null;
      }
    });
    device.cardUid = normalizedUid;
    device.toyNumber ||= nextToyNumber();
    state.selectedDeviceByType[device.type] = device.id;
    saveState();
    renderAll();
    void syncPeripheralCatalog(device);
  }

  function bindCurrentNfcToExisting() {
    const deviceId = $("#extensionNfcExistingDevice")?.value;
    reconcileDevicesAndCapabilitiesFromSlots();
    const device = state.devices.find((item) => item.id === deviceId);
    const cardUid = nfcSnapshot.card?.uid;
    if (!device || !cardUid) return;
    configuredCapabilities(device.id).forEach((capability) => {
      capability.enabled = true;
    });
    bindCardToDevice(device, cardUid);
    renderNfcDialog();
    showToast(`NFC 已关联设备 ID“${device.id}”，全部命令已默认选中。`, "success");
  }

  function unbindCurrentNfc() {
    const device = linkedDeviceForCard(nfcSnapshot.card?.uid);
    if (!device) return;
    device.cardUid = null;
    saveState();
    renderAll();
    void syncPeripheralCatalog(device);
    renderNfcDialog();
    showToast(`已解除设备 ID“${device.id}”的 NFC 绑定。`);
  }

  function updateNfcCapabilityAuthorization(capabilityId, enabled) {
    const device = linkedDeviceForCard(nfcSnapshot.card?.uid);
    const capability = configuredCapabilities(device?.id).find(
      (item) => item.id === capabilityId,
    );
    if (!device || !capability) return;
    capability.enabled = enabled;
    saveState();
    renderAll();
    renderNfcDialog();
    void syncPeripheralCatalog(device);
  }

  function updateAllNfcCapabilityAuthorizations(enabled) {
    const device = linkedDeviceForCard(nfcSnapshot.card?.uid);
    if (!device) return;
    configuredCapabilities(device.id).forEach((capability) => {
      capability.enabled = enabled;
    });
    saveState();
    renderAll();
    renderNfcDialog();
    void syncPeripheralCatalog(device);
  }

  function applyNfcSnapshot(value, { announce = true } = {}) {
    if (!value || typeof value !== "object") return;
    if (value.pet_cards) applyPetCardSnapshot(value.pet_cards);
    const revision = Number(value.revision ?? -1);
    if (revision === nfcSnapshot.revision) return;
    if (Array.isArray(value.legacy_profiles) && value.legacy_profiles.length) {
      importLegacyProfiles(value.legacy_profiles);
    }
    const previousUid = nfcSnapshot.card?.uid || null;
    nfcSnapshot = {
      revision,
      reader: value.reader && typeof value.reader === "object" ? value.reader : {},
      card: value.card && typeof value.card === "object" ? value.card : null,
      legacyProfiles: Array.isArray(value.legacy_profiles) ? value.legacy_profiles : [],
    };
    if (Array.isArray(value.legacy_bridge_addresses)) {
      void migrateLegacyProfiles(value.legacy_bridge_addresses);
    }
    const currentUid = nfcSnapshot.card?.uid || null;
    if (currentUid && currentUid !== previousUid) {
      const device = linkedDeviceForCard(currentUid);
      const pet = linkedPetForCard(currentUid);
      if (device) {
        state.selectedDeviceByType[device.type] = device.id;
        saveState();
        if (announce) {
          showToast(
            pet
              ? `已识别宠物“${pet.pet_name}”和设备 ID“${device.id}”。`
              : `已识别设备 ID“${device.id}”。`,
            "success",
          );
        }
        void syncPeripheralCatalog(device);
      } else if (pet) {
        if (announce) {
          showToast(`已识别宠物“${pet.pet_name}”，将在 1 秒内发送 3 帧 n7/pet。`, "success");
        }
      } else if (announce) {
        showToast("检测到未绑定 NFC，请选择宠物卡片或设备 ID。", "success");
      }
    }
    renderNfcDialog();
    renderUnifiedExtensionView?.();
  }

  async function refreshNfcStatus() {
    try {
      applyNfcSnapshot(await api("nfc/status"));
    } catch (error) {
      applyNfcSnapshot({
        revision: Date.now(),
        reader: { online: false, state: "error", port: "auto", error: error.message },
        card: null,
      }, { announce: false });
    }
  }

  function startNfcPolling() {
    if (nfcPollTimer !== null) return;
    void refreshNfcStatus();
    nfcPollTimer = window.setInterval(() => {
      if (document.visibilityState === "visible") void refreshNfcStatus();
    }, NFC_POLL_INTERVAL_MS);
  }

  function stopNfcPolling() {
    if (nfcPollTimer !== null) window.clearInterval(nfcPollTimer);
    nfcPollTimer = null;
  }

  function openNfcDialog() {
    renderNfcDialog();
    openDialog("extensionNfcDialog");
    void refreshNfcStatus();
  }

  function bindUnifiedNfcEvents(mount) {
    mount.addEventListener("click", (event) => {
      if (event.target.closest("[data-open-pet-settings]")) openPetSettingsDialog();
      else if (event.target.closest("[data-open-nfc-binding]")) openNfcDialog();
      else if (event.target.closest("[data-open-gscu-tcp]")) openGscuTcpDialog();
    });
    bindGscuTcpDialogEvents();
    bindPetSettingsDialogEvents();
    const dialog = $("#extensionNfcDialog");
    dialog.addEventListener("click", (event) => {
      if (event.target.closest("[data-open-pet-settings]")) {
        closeDialog("extensionNfcDialog");
        openPetSettingsDialog();
        return;
      }
      if (event.target.closest("[data-close-nfc-dialog]")) closeDialog("extensionNfcDialog");
      if (event.target.closest("[data-nfc-bind-existing]")) bindCurrentNfcToExisting();
      if (event.target.closest("[data-nfc-unbind]")) unbindCurrentNfc();
      if (event.target.closest("[data-nfc-bind-pet]")) void bindCurrentNfcToPet();
      const unbindPet = event.target.closest("[data-nfc-unbind-pet]");
      if (unbindPet) void unbindPetCard(unbindPet.dataset.nfcUnbindPet);
    });
    dialog.addEventListener("change", (event) => {
      const petSelect = event.target.closest("[data-nfc-pet-select]");
      if (petSelect) selectedPetCardId = petSelect.value;
      const capability = event.target.closest("[data-nfc-capability-enabled]");
      if (capability) {
        updateNfcCapabilityAuthorization(
          capability.dataset.nfcCapabilityEnabled,
          capability.checked,
        );
        return;
      }
      const selectAll = event.target.closest("[data-nfc-select-all]");
      if (selectAll) updateAllNfcCapabilityAuthorizations(selectAll.checked);
    });
    $("#extensionContinueLearn").addEventListener("click", () => {
      try {
        learning.draft = collectLearningDraft();
        showLearnPage(2);
      } catch (error) {
        showToast(error.message, "error");
      }
    });
    $("#extensionStartLearn").addEventListener("click", startLearning);
    $("#extensionCancelLearn").addEventListener("click", cancelLearning);
    $("#extensionTestEmit").addEventListener("click", testLearning);
    $("#extensionConfirmLearn").addEventListener("click", async () => {
      if (await confirmLearning()) {
        void syncPeripheralCatalog(linkedDeviceForCard(nfcSnapshot.card?.uid));
      }
    });
    $("#extensionLearnDialog").addEventListener("cancel", (event) => {
      if (learning.phase === "listening") {
        event.preventDefault();
        cancelLearning().then(() => closeDialog("extensionLearnDialog"));
      }
    });
    $$('[data-close-extension-dialog="extensionLearnDialog"]').forEach((button) => {
      button.addEventListener("click", async () => {
        if (learning.phase === "listening") await cancelLearning();
        closeDialog("extensionLearnDialog");
      });
    });
    window.addEventListener("pagehide", stopNfcPolling);
    window.addEventListener("pageshow", startNfcPolling);
  }

  function buildUnifiedExtensionSync() {
    const mount = $("#vehicleExtensionSync");
    if (!mount) return false;
    let snapshot = null;

    const render = () => {
      const health = snapshot?.extension_health || {};
      healthState = health;
      if ($("#extensionGscuTcpDialog")?.open) renderGscuTcpDialog(health, false);
      const embeddedNfc = health.nfc;
      if (nfcSnapshot.revision < 0 && embeddedNfc) {
        nfcSnapshot = {
          revision: Number(embeddedNfc.revision ?? -1),
          reader: embeddedNfc.reader || {},
          card: embeddedNfc.card || null,
          legacyProfiles: Array.isArray(embeddedNfc.legacy_profiles)
            ? embeddedNfc.legacy_profiles
            : [],
        };
        if (nfcSnapshot.legacyProfiles.length) importLegacyProfiles(nfcSnapshot.legacyProfiles);
        if (Array.isArray(embeddedNfc.legacy_bridge_addresses)) {
          void migrateLegacyProfiles(embeddedNfc.legacy_bridge_addresses);
        }
      }
      if (health.pet_cards) applyPetCardSnapshot(health.pet_cards, { render: false });
      const physicalConnected = health.transport !== "simulation"
        && Boolean(health.connected || health.peer_connected);
      const listening = Boolean(health.listening);
      const sharedCatalog = Array.isArray(snapshot?.extension?.catalog)
        ? snapshot.extension.catalog
        : [];
      const mergedCatalog = [...sharedCatalog, ...peripheralCatalog()]
        .filter((item, index, catalog) => {
          const identity = item.id || `${item.device_id}:${item.action}`;
          return catalog.findIndex((candidate) => (
            candidate.id || `${candidate.device_id}:${candidate.action}`
          ) === identity) === index;
        });
      const nfcReader = nfcSnapshot.reader || {};
      const nfcCard = nfcSnapshot.card;
      const sensedCardUid = normalizeCardUid(nfcCard?.uid);
      const nfcDevice = linkedDeviceForCard(sensedCardUid);
      const nfcPet = linkedPetForCard(sensedCardUid);
      const activeCatalog = sensedCardUid
        ? mergedCatalog.filter((item) => (
          normalizeCardUid(item.card_uid) === sensedCardUid
          && item.status === "learned"
          && item.enabled !== false
        ))
        : [];
      const grouped = new Map();
      activeCatalog.forEach((item) => {
        const deviceId = item.device_id || "external-device";
        if (!grouped.has(deviceId)) grouped.set(deviceId, {
          id: deviceId,
          name: item.device_name || item.type_label || "USB 扩展设备",
          type: item.type_label || item.device_type || "扩展硬件",
          cardUid: item.card_uid || null,
          actions: [],
        });
        grouped.get(deviceId).actions.push(item.action || item.name || "已学习能力");
      });
      const devices = [...grouped.values()];
      const lastAction = snapshot?.extension?.last_action;
      const lastResult = snapshot?.extension?.result;
      const nfcCapabilities = nfcDevice
        ? configuredCapabilities(nfcDevice.id).filter((item) => item.enabled !== false)
        : [];
      const statusLabel = nfcPet
        ? petCardSnapshot.publisher?.state === "bursting"
          ? "宠物消息发送中"
          : petCardSnapshot.publisher?.state === "burst_complete"
            ? "宠物消息已发送"
            : petCardSnapshot.publisher?.state === "burst_failed"
              ? "宠物消息发送失败"
              : "已感应宠物 NFC"
        : devices.length
          ? "已感应 NFC 外设"
        : sensedCardUid
          ? "当前 NFC 暂无已授权命令"
          : nfcReader.online
            ? "等待 NFC 外设靠近"
            : "NFC 读卡器离线";
      const gatewayLabel = physicalConnected
        ? "GSCU1B 已连接"
        : health.transport === "simulation"
          ? "扩展仿真链路"
          : listening
            ? "等待 GSCU1B 接入"
            : "红外链路检查中";
      const gatewayNote = physicalConnected
        ? `${health.peer || "GSCU1B"} · 红外学习与发射链路已就绪`
        : health.message || "红外学习器接入后可学习并发射设备动作";
      const visibleLastAction = devices.length ? lastAction : null;
      const nfcState = !nfcReader.online
        ? "offline"
        : nfcDevice || nfcPet
          ? "recognized"
          : nfcCard?.uid
            ? "new-card"
            : "waiting";
      const nfcTitle = nfcPet
        ? `宠物 · ${nfcPet.pet_name}`
        : nfcDevice
          ? nfcDevice.id
        : nfcCard?.uid
          ? "检测到未绑定 NFC"
          : nfcReader.online
            ? "等待 NFC 卡靠近"
            : "NFC 读卡器未连接";
      const nfcNote = nfcPet
        ? `${nfcPet.action} · ${petCardSnapshot.publisher?.topic || "n7/pet"} · 3 帧 / 1 秒`
        : nfcDevice
          ? `${nfcCapabilities.length} 条命令已授权 · ${nfcCard.uid}`
        : nfcCard?.uid
          ? `${nfcCard.uid} · 点击关联设备 ID`
          : nfcReaderNote(nfcReader);
      mount.dataset.hasDevices = String(devices.length > 0);
      mount.dataset.hasPets = String(Boolean(nfcPet));
      mount.innerHTML = `
        <header class="v2-extension-sync-heading">
          <div><h3>外设与扩展能力</h3><div class="v2-extension-sync-actions"><button class="v2-pet-settings-launch" type="button" data-open-pet-settings><i data-lucide="paw-print"></i><span>宠物设置</span></button><button class="v2-extension-nfc-launch" type="button" data-open-nfc-binding><i data-lucide="scan-line"></i><span>NFC 设备绑定</span></button></div></div>
          <span data-state="${nfcPet || devices.length ? "online" : nfcReader.online ? "listening" : "offline"}"><i></i>${statusLabel}</span>
        </header>
        <section class="v2-nfc-inline" data-state="${nfcState}">
          <span class="v2-nfc-inline-icon"><i data-lucide="${nfcPet ? "paw-print" : nfcDevice ? "badge-check" : "scan-line"}"></i><b></b></span>
          <div><strong title="${escapeHtml(nfcNote)}">${escapeHtml(nfcTitle)}</strong>${nfcPet ? "" : `<p>${escapeHtml(nfcNote)}</p>`}${nfcCapabilities.length ? `<div>${nfcCapabilities.slice(0, 6).map((capability) => `<i>${escapeHtml(capability.name)}</i>`).join("")}</div>` : ""}</div>
          <button type="button" data-open-nfc-binding>${nfcPet ? "查看宠物" : nfcDevice ? "查看授权" : nfcCard?.uid ? "关联卡片" : "开始感应"}</button>
        </section>
        <div class="v2-extension-gateway">
          <span><i data-lucide="usb"></i></span>
          <div><strong title="${escapeHtml(gatewayNote)}">${gatewayLabel}</strong></div>
          <b>${String(health.transport || "GSCU").toUpperCase()}</b>
          <button type="button" data-open-gscu-tcp><i data-lucide="settings-2"></i><span>TCP 设置</span></button>
        </div>
        <div class="v2-extension-device-list">
          ${nfcPet ? renderDetectedPetCard(nfcPet) : ""}
          ${devices.length ? devices.map((device) => `
            <article class="v2-extension-synced-device">
              <header><span><i data-lucide="${device.cardUid ? "badge-check" : "cpu"}"></i></span><div><strong title="${escapeHtml(device.type || device.name)}">${escapeHtml(device.name)}</strong></div><b>${device.actions.length} 项能力</b></header>
              <div>${device.actions.slice(0, 8).map((action) => `<span>${escapeHtml(action)}</span>`).join("")}</div>
            </article>`).join("") : nfcPet ? "" : `
            <div class="v2-extension-empty">
              <i data-lucide="${sensedCardUid ? "badge-alert" : "scan-line"}"></i><div><strong>${sensedCardUid ? "当前 NFC 暂无已授权命令" : "当前未感应到外设"}</strong><span>${sensedCardUid ? "请检查设备 ID 绑定及命令复选框" : "将已绑定设备 ID 的 NFC 卡靠近读卡器后显示命令"}</span></div>
            </div>`}
        </div>
        <footer class="v2-extension-linkage" data-active="${String(Boolean(visibleLastAction))}">
          <i data-lucide="workflow"></i><div><small>最近联动</small><strong>${escapeHtml(visibleLastAction?.command || visibleLastAction?.type || "等待 NFC 外设感应")}</strong></div>
          <span>${escapeHtml(visibleLastAction ? (lastResult?.status || lastResult?.message || "STANDBY") : "STANDBY")}</span>
        </footer>`;
      window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
    };
    renderUnifiedExtensionView = render;

    window.addEventListener("cognitive-agent:display-sync", (event) => {
      snapshot = event.detail || null;
      if (snapshot?.extension_health?.nfc) {
        applyNfcSnapshot(snapshot.extension_health.nfc, { announce: false });
      }
      render();
    });
    buildDialogs();
    buildUnifiedNfcDialog();
    bindUnifiedNfcEvents(mount);
    void refreshInfraredSlotCatalog().catch((error) => {
      console.warn("读取本地红外槽位数据库失败。", error);
    });
    render();
    renderNfcDialog();
    startNfcPolling();
    void hydratePetCards().catch((error) => {
      console.warn("恢复后端宠物卡片失败。", error);
    });
    void hydratePeripheralCatalog()
      .catch((error) => {
        console.warn("恢复后端红外能力目录失败，将保留浏览器本地目录。", error);
      })
      .finally(() => syncPeripheralCatalog());
    return true;
  }

  function init() {
    if (buildUnifiedExtensionSync()) {
      void migrateLegacyProfiles();
      return;
    }
    if (!buildShell()) return;
    initializeDesktopPet();
    bindEvents();
    renderAll();
    setMode(activeMode);
    if (document.body.dataset.module === "self-extension") refreshHealth();
    startHealthPolling();
    void refreshInfraredSlotCatalog().catch((error) => {
      console.warn("读取本地红外槽位数据库失败。", error);
    });
    void migrateLegacyProfiles();
    window.lucide?.createIcons({ attrs: { "aria-hidden": "true" } });
  }

  document.addEventListener("DOMContentLoaded", init);
}());