diff --git a/docs/superpowers/specs/2026-04-16-master-agent-fast-path-design.md b/docs/superpowers/specs/2026-04-16-master-agent-fast-path-design.md
index 4cf370f..b73b341 100644
--- a/docs/superpowers/specs/2026-04-16-master-agent-fast-path-design.md
+++ b/docs/superpowers/specs/2026-04-16-master-agent-fast-path-design.md
@@ -85,11 +85,33 @@ Android 主 Agent 会话页顶部标题同步显示：
 
 下一批适合继续接入 Fast Path 的问题：
 
-- 当前绑定设备 / 在线设备查询
 - 当前会话 / 当前线程运行状态查询
-- GUI / CLI 默认执行模式查询
-- 当前接管开关状态查询
 - 最近活跃项目 / 最近活跃线程查询
+- 更细粒度的线程级接管控制与作用域切换
+
+## 6.1 第二批已接入意图
+
+本次继续把主 Agent 的“控制面”高频问题接入快路径：
+
+- 全局接管状态查询
+  - 例：“当前有没有开启主agent接管”
+- 全局接管开关
+  - 例：“帮我开启全局接管”
+  - 例：“关闭全局接管”
+- 默认后端切换
+  - 例：“把默认后端切到 Hermes”
+  - 例：“切到 Claw 后端”
+- 默认执行模式查询
+  - 例：“现在默认走 GUI 还是 CLI”
+- 当前主节点 / 绑定设备在线状态查询
+  - 例：“当前主节点在线吗”
+
+这批实现原则是：
+
+- 只处理确定性、纯本地状态可回答的问题
+- 不进入异步任务队列
+- 先命中接管 / 后端 / 执行模式，再命中模型切换，避免“切到 Hermes 后端”被模型切换规则误判
+- `GUI 还是 CLI` 与 `Hermes 还是 Claw` 分属不同意图，不再混用一个正则
 
 ## 7. 验证基线
 
@@ -99,3 +121,11 @@ Android 主 Agent 会话页顶部标题同步显示：
 - `npm run build`
 - `./gradlew :app:compileDebugJavaWithJavac :app:assembleDebug`
 - 真机安装并验证主 Agent 名称与模型查询行为
+
+第二批补充验证点：
+
+- `npx tsx --test tests/master-agent-message-queue.test.ts`
+- 覆盖全局接管查询 / 切换
+- 覆盖默认后端切换
+- 覆盖 GUI/CLI 执行模式查询
+- 覆盖主节点设备在线状态查询
diff --git a/src/lib/boss-master-agent.ts b/src/lib/boss-master-agent.ts
index bf350c7..a954b51 100644
--- a/src/lib/boss-master-agent.ts
+++ b/src/lib/boss-master-agent.ts
@@ -43,6 +43,8 @@ import {
   createHermesBackend,
   getHermesBackendSelectionState,
 } from "@/lib/execution/backends/hermes-backend";
+import { getClawBackendAvailability } from "@/lib/execution/backends/claw-config";
+import { getHermesBackendAvailability } from "@/lib/execution/backends/hermes-config";
 import { getOmxTeamBackendSelectionState } from "@/lib/execution/backends/omx-team-backend";
 import type { OrchestrationBackendId } from "@/lib/execution/orchestration-backend";
 import { listExecutionBackendChoices, selectExecutionBackend } from "@/lib/execution/backend-selector";
@@ -1723,6 +1725,21 @@ type MasterAgentFastIntentContext = {
   effectiveDeepTaskPolicy: ReturnType<typeof resolveMasterAgentModelPolicy>;
 };
 
+function buildMasterAgentRuntimeBackendLabel(context: MasterAgentFastIntentContext) {
+  return context.agentControls?.backendOverride?.trim() || "master-codex-node";
+}
+
+function getMasterAgentRuntimeDevice(context: MasterAgentFastIntentContext) {
+  const deviceId =
+    context.runtime.account.nodeId?.trim() ||
+    context.state.user.boundDeviceId?.trim() ||
+    "";
+  if (!deviceId) {
+    return null;
+  }
+  return context.state.devices.find((device) => device.id === deviceId) ?? null;
+}
+
 function detectMasterAgentModelCommandScope(requestText: string): MasterAgentModelCommandScope {
   const normalized = normalizeLexicalText(requestText);
   if (
@@ -1791,11 +1808,76 @@ function isBackendStatusRequest(requestText: string) {
   if (!normalized || isModelSwitchRequest(requestText)) {
     return false;
   }
-  return /(什么后端|哪个后端|当前后端|现在后端|正在用什么后端|当前用什么后端|gui还是cli|hermes还是claw|claw还是hermes)/i.test(
+  return /(什么后端|哪个后端|当前后端|现在后端|正在用什么后端|当前用什么后端|hermes还是claw|claw还是hermes)/i.test(
     normalized,
   );
 }
 
+function isBackendSwitchRequest(requestText: string) {
+  const normalized = normalizeLexicalText(requestText);
+  if (!normalized) {
+    return false;
+  }
+  return /(后端|runtime)/i.test(normalized) && /(切到|切换到|换成|改成|改为|用|使用)/i.test(normalized);
+}
+
+function detectRequestedBackend(requestText: string) {
+  const normalized = normalizeLexicalText(requestText);
+  if (normalized.includes("hermes")) {
+    return HERMES_BACKEND_ID;
+  }
+  if (normalized.includes("claw")) {
+    return CLAW_BACKEND_ID;
+  }
+  return "";
+}
+
+function isTakeoverStatusRequest(requestText: string) {
+  const normalized = normalizeLexicalText(requestText);
+  if (!normalized) {
+    return false;
+  }
+  return /(接管|协同接管)/i.test(normalized) && /(有没有开启|是否开启|开了吗|状态|现在开着吗|当前开着吗)/i.test(normalized);
+}
+
+function isTakeoverSwitchRequest(requestText: string) {
+  const normalized = normalizeLexicalText(requestText);
+  if (!normalized) {
+    return false;
+  }
+  if (/(有没有开启|是否开启|开了吗|状态|现在开着吗|当前开着吗)/i.test(normalized)) {
+    return false;
+  }
+  return /(接管|协同接管)/i.test(normalized) && /(开启|打开|关闭|关掉|停用|禁用)/i.test(normalized);
+}
+
+function detectRequestedTakeoverEnabled(requestText: string) {
+  const normalized = normalizeLexicalText(requestText);
+  if (/(关闭|关掉|停用|禁用)/i.test(normalized)) {
+    return false;
+  }
+  if (/(开启|打开)/i.test(normalized)) {
+    return true;
+  }
+  return null;
+}
+
+function isExecutionModeStatusRequest(requestText: string) {
+  const normalized = normalizeLexicalText(requestText);
+  if (!normalized) {
+    return false;
+  }
+  return /(gui\s*还是\s*cli|默认走.*gui.*cli|默认执行模式|执行模式|gui\s*cli)/i.test(normalized);
+}
+
+function isBoundDeviceStatusRequest(requestText: string) {
+  const normalized = normalizeLexicalText(requestText);
+  if (!normalized) {
+    return false;
+  }
+  return /(绑定设备|主节点|master节点|codex节点)/i.test(normalized) && /(在线吗|在不在线|是否在线|状态)/i.test(normalized);
+}
+
 async function buildMasterAgentFastIntentContext(
   requestedByAccount: string,
 ): Promise<MasterAgentFastIntentContext | null> {
@@ -1934,6 +2016,140 @@ async function tryHandleMasterAgentBackendStatusQuery(params: {
   );
 }
 
+async function tryHandleMasterAgentBackendSwitchCommand(params: {
+  requestText: string;
+  requestedByAccount: string;
+  context: MasterAgentFastIntentContext;
+}) {
+  if (!isBackendSwitchRequest(params.requestText)) {
+    return null;
+  }
+  const requestedBackend = detectRequestedBackend(params.requestText);
+  if (!requestedBackend) {
+    return appendFastPathError(
+      "我收到的是后端切换请求，但没有识别到具体后端。你可以直接说“切到 Hermes 后端”或“切到 Claw 后端”。",
+      "BACKEND_NAME_REQUIRED",
+      buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+    );
+  }
+
+  if (requestedBackend === HERMES_BACKEND_ID) {
+    const availability = await getHermesBackendAvailability();
+    if (!availability.selectable) {
+      return appendFastPathError(
+        `Hermes Runtime 当前不可切换：${availability.reasonLabel}`,
+        "BACKEND_NOT_AVAILABLE",
+        buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+      );
+    }
+  }
+
+  if (requestedBackend === CLAW_BACKEND_ID) {
+    const availability = await getClawBackendAvailability();
+    if (!availability.selectable) {
+      return appendFastPathError(
+        `Claw Runtime 当前不可切换：${availability.reasonLabel}`,
+        "BACKEND_NOT_AVAILABLE",
+        buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+      );
+    }
+  }
+
+  await updateProjectAgentControls(
+    "master-agent",
+    { backendOverride: requestedBackend },
+    params.requestedByAccount,
+  );
+  return appendFastPathReply(
+    `已把默认后端切到 ${requestedBackend}。`,
+    buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+  );
+}
+
+async function tryHandleMasterAgentTakeoverCommand(params: {
+  requestText: string;
+  requestedByAccount: string;
+  context: MasterAgentFastIntentContext;
+}) {
+  const isStatus = isTakeoverStatusRequest(params.requestText);
+  const isSwitch = isTakeoverSwitchRequest(params.requestText);
+  if (!isStatus && !isSwitch) {
+    return null;
+  }
+
+  const currentEnabled = Boolean(params.context.agentControls?.globalTakeoverEnabled);
+  if (isStatus && !isSwitch) {
+    return appendFastPathReply(
+      `全局接管：${currentEnabled ? "开启" : "关闭"}。`,
+      buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+    );
+  }
+
+  const nextEnabled = detectRequestedTakeoverEnabled(params.requestText);
+  if (nextEnabled === null) {
+    return appendFastPathError(
+      "我收到的是接管切换请求，但没有识别到要开启还是关闭。你可以直接说“开启全局接管”或“关闭全局接管”。",
+      "TAKEOVER_ACTION_REQUIRED",
+      buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+    );
+  }
+
+  await updateProjectAgentControls(
+    "master-agent",
+    { globalTakeoverEnabled: nextEnabled },
+    params.requestedByAccount,
+  );
+  return appendFastPathReply(
+    nextEnabled ? "已开启全局接管。" : "已关闭全局接管。",
+    buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+  );
+}
+
+async function tryHandleMasterAgentExecutionModeStatusQuery(params: {
+  requestText: string;
+  context: MasterAgentFastIntentContext;
+}) {
+  if (!isExecutionModeStatusRequest(params.requestText)) {
+    return null;
+  }
+  const device = getMasterAgentRuntimeDevice(params.context);
+  if (!device) {
+    return appendFastPathReply(
+      "当前没有绑定可识别的主节点设备，所以还不能判断默认执行模式。",
+      buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+    );
+  }
+  const preferredMode = device.preferredExecutionMode || "unknown";
+  const guiStatus = device.capabilities?.gui?.connected ? "在线" : "离线";
+  const cliStatus = device.capabilities?.cli?.connected ? "在线" : "离线";
+  return appendFastPathReply(
+    `默认执行模式：${preferredMode}。设备：${device.name || device.id}。GUI：${guiStatus}。CLI：${cliStatus}。`,
+    buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+  );
+}
+
+async function tryHandleMasterAgentBoundDeviceStatusQuery(params: {
+  requestText: string;
+  context: MasterAgentFastIntentContext;
+}) {
+  if (!isBoundDeviceStatusRequest(params.requestText)) {
+    return null;
+  }
+  const device = getMasterAgentRuntimeDevice(params.context);
+  if (!device) {
+    return appendFastPathReply(
+      "当前没有找到绑定的主节点设备记录。",
+      buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+    );
+  }
+  const guiStatus = device.capabilities?.gui?.connected ? "在线" : "离线";
+  const cliStatus = device.capabilities?.cli?.connected ? "在线" : "离线";
+  return appendFastPathReply(
+    `当前主节点设备：${device.name || device.id}。设备状态：${device.status}。GUI：${guiStatus}。CLI：${cliStatus}。`,
+    buildMasterAgentModelSenderLabel(params.context.effectiveChatPolicy.model),
+  );
+}
+
 function isModelListRequest(requestText: string) {
   return /(哪些模型|什么模型|模型清单|可用模型|有哪些可用|available models?)/i.test(requestText);
 }
@@ -2024,6 +2240,10 @@ async function tryHandleMasterAgentFastIntent(params: {
     return null;
   }
   const handlers = [
+    () => tryHandleMasterAgentTakeoverCommand({ ...params, context }),
+    () => tryHandleMasterAgentBackendSwitchCommand({ ...params, context }),
+    () => tryHandleMasterAgentExecutionModeStatusQuery({ requestText: params.requestText, context }),
+    () => tryHandleMasterAgentBoundDeviceStatusQuery({ requestText: params.requestText, context }),
     () => tryHandleMasterAgentModelCommand({ ...params, context }),
     () => tryHandleMasterAgentStatusQuery({ requestText: params.requestText, context }),
     () => tryHandleMasterAgentBackendStatusQuery({ requestText: params.requestText, context }),
diff --git a/tests/master-agent-message-queue.test.ts b/tests/master-agent-message-queue.test.ts
index a676304..6c74842 100644
--- a/tests/master-agent-message-queue.test.ts
+++ b/tests/master-agent-message-queue.test.ts
@@ -10,6 +10,7 @@ let POST: (typeof import("../src/app/api/v1/projects/[projectId]/messages/route"
 let saveAiAccount: (typeof import("../src/lib/boss-data"))["saveAiAccount"];
 let getProjectAgentControls: (typeof import("../src/lib/boss-data"))["getProjectAgentControls"];
 let updateProjectAgentControls: (typeof import("../src/lib/boss-data"))["updateProjectAgentControls"];
+let updateDevice: (typeof import("../src/lib/boss-data"))["updateDevice"];
 let readState: (typeof import("../src/lib/boss-data"))["readState"];
 let createAuthSession: (typeof import("../src/lib/boss-data"))["createAuthSession"];
 let AUTH_SESSION_COOKIE = "";
@@ -33,6 +34,7 @@ async function setup() {
   saveAiAccount = data.saveAiAccount;
   getProjectAgentControls = data.getProjectAgentControls;
   updateProjectAgentControls = data.updateProjectAgentControls;
+  updateDevice = data.updateDevice;
   readState = data.readState;
   createAuthSession = data.createAuthSession;
   AUTH_SESSION_COOKIE = auth.AUTH_SESSION_COOKIE;
@@ -357,6 +359,252 @@ test("master-agent 查询当前后端时直接走 fast path 返回后端摘要",
   assert.equal(reply?.senderLabel ?? "", "主Agent·gpt-5.4");
 });
 
+test("master-agent 查询全局接管状态时直接走 fast path 返回当前状态", async () => {
+  await saveAiAccount({
+    accountId: "openai-takeover-status",
+    label: "OpenAI 主模型",
+    role: "primary",
+    provider: "openai_api",
+    displayName: "OpenAI 主模型",
+    model: "gpt-5.4-mini",
+    apiKey: "sk-openai-takeover-status",
+    enabled: true,
+    setActive: true,
+    loginStatusNote: "用于全局接管状态查询测试。",
+  });
+  await updateProjectAgentControls(
+    "master-agent",
+    {
+      globalTakeoverEnabled: true,
+    },
+    "17600003315",
+  );
+
+  const response = await POST(
+    await createAuthedRequest("master-agent", {
+      body: "当前有没有开启主agent接管",
+    }),
+    { params: Promise.resolve({ projectId: "master-agent" }) },
+  );
+
+  assert.equal(response.status, 200);
+  const payload = (await response.json()) as {
+    ok: boolean;
+    task?: { taskId: string } | null;
+    masterReplyState?: "queued" | "running" | "completed" | null;
+  };
+  assert.equal(payload.ok, true);
+  assert.equal(payload.task ?? null, null);
+  assert.equal(payload.masterReplyState, "completed");
+
+  const state = await readState();
+  const masterProject = state.projects.find((project) => project.id === "master-agent");
+  const reply = masterProject?.messages.at(-1);
+  assert.ok(reply);
+  assert.match(reply?.body ?? "", /全局接管：开启/);
+  assert.equal(reply?.senderLabel ?? "", "主Agent·gpt-5.4-mini");
+});
+
+test("master-agent 可以直接通过 fast path 开启全局接管", async () => {
+  await saveAiAccount({
+    accountId: "openai-takeover-switch",
+    label: "OpenAI 主模型",
+    role: "primary",
+    provider: "openai_api",
+    displayName: "OpenAI 主模型",
+    model: "gpt-5.4-mini",
+    apiKey: "sk-openai-takeover-switch",
+    enabled: true,
+    setActive: true,
+    loginStatusNote: "用于全局接管切换测试。",
+  });
+
+  const response = await POST(
+    await createAuthedRequest("master-agent", {
+      body: "帮我开启全局接管",
+    }),
+    { params: Promise.resolve({ projectId: "master-agent" }) },
+  );
+
+  assert.equal(response.status, 200);
+  const payload = (await response.json()) as {
+    ok: boolean;
+    task?: { taskId: string } | null;
+    masterReplyState?: "queued" | "running" | "completed" | null;
+  };
+  assert.equal(payload.ok, true);
+  assert.equal(payload.task ?? null, null);
+  assert.equal(payload.masterReplyState, "completed");
+
+  const controls = await getProjectAgentControls("master-agent", "17600003315");
+  assert.equal(controls?.globalTakeoverEnabled ?? null, true);
+
+  const state = await readState();
+  const masterProject = state.projects.find((project) => project.id === "master-agent");
+  const reply = masterProject?.messages.at(-1);
+  assert.ok(reply);
+  assert.match(reply?.body ?? "", /已开启全局接管/);
+});
+
+test("master-agent 可以直接通过 fast path 切换默认后端到 Hermes", async () => {
+  const previousEnv = {
+    BOSS_HERMES_ENABLED: process.env.BOSS_HERMES_ENABLED,
+    BOSS_HERMES_COMMAND: process.env.BOSS_HERMES_COMMAND,
+  };
+  process.env.BOSS_HERMES_ENABLED = "true";
+  process.env.BOSS_HERMES_COMMAND = process.execPath;
+
+  await saveAiAccount({
+    accountId: "openai-backend-switch",
+    label: "OpenAI 主模型",
+    role: "primary",
+    provider: "openai_api",
+    displayName: "OpenAI 主模型",
+    model: "gpt-5.4",
+    apiKey: "sk-openai-backend-switch",
+    enabled: true,
+    setActive: true,
+    loginStatusNote: "用于后端切换测试。",
+  });
+
+  try {
+    const response = await POST(
+      await createAuthedRequest("master-agent", {
+        body: "把默认后端切到 Hermes",
+      }),
+      { params: Promise.resolve({ projectId: "master-agent" }) },
+    );
+
+    assert.equal(response.status, 200);
+    const payload = (await response.json()) as {
+      ok: boolean;
+      task?: { taskId: string } | null;
+      masterReplyState?: "queued" | "running" | "completed" | null;
+    };
+    assert.equal(payload.ok, true);
+    assert.equal(payload.task ?? null, null);
+    assert.equal(payload.masterReplyState, "completed");
+
+    const controls = await getProjectAgentControls("master-agent", "17600003315");
+    assert.equal(controls?.backendOverride ?? null, "hermes-runtime");
+
+    const state = await readState();
+    const masterProject = state.projects.find((project) => project.id === "master-agent");
+    const reply = masterProject?.messages.at(-1);
+    assert.ok(reply);
+    assert.match(reply?.body ?? "", /已把默认后端切到 hermes-runtime/i);
+  } finally {
+    process.env.BOSS_HERMES_ENABLED = previousEnv.BOSS_HERMES_ENABLED;
+    process.env.BOSS_HERMES_COMMAND = previousEnv.BOSS_HERMES_COMMAND;
+  }
+});
+
+test("master-agent 查询默认执行模式时直接返回 GUI CLI 状态", async () => {
+  await saveAiAccount({
+    accountId: "master-codex-execution-mode",
+    label: "主 GPT",
+    role: "primary",
+    provider: "master_codex_node",
+    displayName: "Mac 上的 Master Codex Node",
+    nodeId: "mac-studio",
+    nodeLabel: "Mac Studio",
+    model: "gpt-5.4",
+    enabled: true,
+    setActive: true,
+    loginStatusNote: "用于执行模式查询测试。",
+  });
+  await updateDevice("mac-studio", {
+    status: "online",
+    preferredExecutionMode: "gui",
+    capabilities: {
+      gui: {
+        connected: true,
+      },
+      cli: {
+        connected: true,
+      },
+    },
+  });
+
+  const response = await POST(
+    await createAuthedRequest("master-agent", {
+      body: "现在默认走 GUI 还是 CLI",
+    }),
+    { params: Promise.resolve({ projectId: "master-agent" }) },
+  );
+
+  assert.equal(response.status, 200);
+  const payload = (await response.json()) as {
+    ok: boolean;
+    task?: { taskId: string } | null;
+    masterReplyState?: "queued" | "running" | "completed" | null;
+  };
+  assert.equal(payload.ok, true);
+  assert.equal(payload.task ?? null, null);
+  assert.equal(payload.masterReplyState, "completed");
+
+  const state = await readState();
+  const masterProject = state.projects.find((project) => project.id === "master-agent");
+  const reply = masterProject?.messages.at(-1);
+  assert.ok(reply);
+  assert.match(reply?.body ?? "", /默认执行模式：gui/i);
+  assert.match(reply?.body ?? "", /GUI：在线/);
+  assert.match(reply?.body ?? "", /CLI：在线/);
+});
+
+test("master-agent 查询当前主节点设备状态时直接返回绑定设备在线信息", async () => {
+  await saveAiAccount({
+    accountId: "master-codex-device-status",
+    label: "主 GPT",
+    role: "primary",
+    provider: "master_codex_node",
+    displayName: "Mac 上的 Master Codex Node",
+    nodeId: "mac-studio",
+    nodeLabel: "Mac Studio",
+    model: "gpt-5.4",
+    enabled: true,
+    setActive: true,
+    loginStatusNote: "用于绑定设备状态查询测试。",
+  });
+  await updateDevice("mac-studio", {
+    status: "online",
+    capabilities: {
+      gui: {
+        connected: true,
+      },
+      cli: {
+        connected: false,
+      },
+    },
+  });
+
+  const response = await POST(
+    await createAuthedRequest("master-agent", {
+      body: "当前主节点在线吗",
+    }),
+    { params: Promise.resolve({ projectId: "master-agent" }) },
+  );
+
+  assert.equal(response.status, 200);
+  const payload = (await response.json()) as {
+    ok: boolean;
+    task?: { taskId: string } | null;
+    masterReplyState?: "queued" | "running" | "completed" | null;
+  };
+  assert.equal(payload.ok, true);
+  assert.equal(payload.task ?? null, null);
+  assert.equal(payload.masterReplyState, "completed");
+
+  const state = await readState();
+  const masterProject = state.projects.find((project) => project.id === "master-agent");
+  const reply = masterProject?.messages.at(-1);
+  assert.ok(reply);
+  assert.match(reply?.body ?? "", /当前主节点设备：/);
+  assert.match(reply?.body ?? "", /设备状态：online/);
+  assert.match(reply?.body ?? "", /GUI：在线/);
+  assert.match(reply?.body ?? "", /CLI：离线/);
+});
+
 test("POST /api/v1/projects/master-agent/messages 快速返回队列态并在异步实际回复时继承当前会话覆盖", async () => {
   await saveAiAccount({
     accountId: "openai-master-agent-queue",