diff --git a/apps/server/src/modules/desktop/__tests__/desktop.test.ts b/apps/server/src/modules/desktop/__tests__/desktop.test.ts
new file mode 100644
index 00000000..19e3e83e
--- /dev/null
+++ b/apps/server/src/modules/desktop/__tests__/desktop.test.ts
@@ -0,0 +1,147 @@
+import { OpenAPIHono } from "@hono/zod-openapi";
+import { describe, expect, it } from "vitest";
+import type { AuthEnv, Principal, SessionVar } from "../../../http/auth.ts";
+import { ApiException, errorBody } from "../../../http/errors.ts";
+import {
+  basicAuth,
+  type DesktopDeps,
+  type DesktopRole,
+  deriveDesktopPasswords,
+  desktopUpstream,
+  registerDesktopRoutes,
+  sameOrigin,
+} from "../desktop.ts";
+
+// 桌面模式反代:口令派生与容器 init 脚本一致、角色 → 口令注入、只接受控制台会话、响应头与路径约束。
+
+const SID = "7d3c1a52-9b0e-4b7a-8a51-0c2f7f7f0a11";
+const KEY = "p0key";
+
+function harness(
+  opts: { principal?: Partial<Principal>; role?: DesktopRole; check?: DesktopDeps["checkSession"] } = {},
+) {
+  const calls: { url: string; headers: Headers; method: string }[] = [];
+  const app = new OpenAPIHono<AuthEnv>();
+  app.onError((err, c) => {
+    if (err instanceof ApiException) return c.json(errorBody(err.code, err.message), err.status as 400);
+    throw err;
+  });
+  app.use("*", async (c, next) => {
+    const p: Principal = { kind: "admin_session", id: "u1", name: "admin", scopes: ["admin"], ...opts.principal };
+    c.set("principal", p);
+    c.set("session", p.kind === "admin_session" ? ({ id: "s1" } as SessionVar) : undefined);
+    await next();
+  });
+  registerDesktopRoutes(app, {
+    upstream: "http://camofox:3000",
+    accessKey: KEY,
+    checkSession:
+      opts.check ??
+      (async (_id, holder) => {
+        expect(holder).toBe("admin_session:admin");
+        return { ok: true, role: opts.role ?? "viewer", leaseExpiresAt: null };
+      }),
+    consoleSessionValid: async () => true,
+    probeTtlMs: 0,
+    fetch: (async (input: string | URL | Request, init?: RequestInit) => {
+      const url = String(input);
+      calls.push({ url, headers: new Headers(init?.headers), method: init?.method ?? "GET" });
+      if (url.endsWith("/api/secret-401"))
+        return new Response("no", { status: 401, headers: { "www-authenticate": "Basic" } });
+      return new Response("ok", {
+        status: 200,
+        headers: { "content-type": "text/html", "www-authenticate": "Basic", "x-frame-options": "DENY" },
+      });
+    }) as typeof fetch,
+  });
+  const root = new OpenAPIHono<AuthEnv>();
+  root.onError((err, c) => {
+    if (err instanceof ApiException) return c.json(errorBody(err.code, err.message), err.status as 400);
+    throw err;
+  });
+  root.route("/api/v1", app);
+  return { app: root, calls };
+}
+
+describe("桌面口令与上游地址", () => {
+  it("口令与容器 init-umt-desktop 的 openssl HMAC 派生一致", () => {
+    // printf '%s' umt-desktop/control | openssl dgst -sha256 -hmac p0key -r | cut -c1-48
+    const p = deriveDesktopPasswords(KEY);
+    expect(p.controller).toBe("0b29251f95456b1e4612e3f4c45c2e353fd24e5ecbdf4959");
+    expect(p.viewer).toHaveLength(48);
+    expect(p.viewer).not.toBe(p.controller);
+  });
+
+  it("缺省由浏览器服务地址推出(端口换 3000),可显式覆盖", () => {
+    expect(desktopUpstream({ providerUrl: "http://camofox:9377" })).toBe("http://camofox:3000");
+    expect(desktopUpstream({ providerUrl: "http://camofox:9377", desktopUrl: "http://desk:3000/" })).toBe(
+      "http://desk:3000",
+    );
+    expect(desktopUpstream({})).toBeNull();
+  });
+
+  it("WebSocket 只接受同源页面", () => {
+    const req = (origin: string | null, host = "media.example.com") =>
+      new Request("https://media.example.com/x", { headers: { host, ...(origin ? { origin } : {}) } });
+    expect(sameOrigin(req("https://media.example.com"))).toBe(true);
+    expect(sameOrigin(req("https://evil.example"))).toBe(false);
+    expect(sameOrigin(req(null))).toBe(false);
+  });
+});
+
+describe("桌面反代", () => {
+  it("外部 API Key 不能用桌面模式", async () => {
+    const { app } = harness({ principal: { kind: "api_key" } });
+    const r = await app.request(`/api/v1/browser/desktop/${SID}/`);
+    expect(r.status).toBe(403);
+  });
+
+  it("状态:按租约给角色,并返回 iframe 地址", async () => {
+    const { app } = harness({ role: "controller" });
+    const r = await app.request(`/api/v1/browser/desktop/${SID}/_status`);
+    const body = (await r.json()) as { data: { available: boolean; role: string; path: string } };
+    expect(body.data).toMatchObject({ available: true, role: "controller", path: `/api/v1/browser/desktop/${SID}/` });
+  });
+
+  it("静态资源:不带口令、不转发 cookie;响应只允许本站嵌入,不外露认证质询", async () => {
+    const { app, calls } = harness();
+    const r = await app.request(`/api/v1/browser/desktop/${SID}/assets/index.js?v=1`, {
+      headers: { cookie: "umt_session=secret" },
+    });
+    expect(r.status).toBe(200);
+    expect(calls.at(-1)?.url).toBe("http://camofox:3000/assets/index.js?v=1");
+    expect(calls.at(-1)?.headers.get("authorization")).toBeNull();
+    expect(calls.at(-1)?.headers.get("cookie")).toBeNull();
+    expect(r.headers.get("content-security-policy")).toBe("frame-ancestors 'self'");
+    expect(r.headers.get("x-frame-options")).toBe("SAMEORIGIN");
+    expect(r.headers.get("www-authenticate")).toBeNull();
+  });
+
+  it("Selkies 接口:只读 / 控制口令按角色注入", async () => {
+    const pw = deriveDesktopPasswords(KEY);
+    for (const role of ["viewer", "controller"] as const) {
+      const { app, calls } = harness({ role });
+      await app.request(`/api/v1/browser/desktop/${SID}/api/websockets`);
+      expect(calls.at(-1)?.headers.get("authorization")).toBe(basicAuth(pw[role]));
+    }
+  });
+
+  it("上游 401 不透传质询,报口令不匹配", async () => {
+    const { app } = harness();
+    const r = await app.request(`/api/v1/browser/desktop/${SID}/api/secret-401`);
+    expect(r.status).toBe(502);
+    expect(r.headers.get("www-authenticate")).toBeNull();
+  });
+
+  it("会话不属于自带浏览器服务 → 409;非法会话 id → 404;WebSocket 跨源 → 403", async () => {
+    const { app } = harness({
+      check: async () => ({ ok: false, code: "unsupported", message: "只有部署自带的浏览器服务支持桌面模式" }),
+    });
+    expect((await app.request(`/api/v1/browser/desktop/${SID}/api/websockets`)).status).toBe(409);
+    expect((await app.request("/api/v1/browser/desktop/not-a-uuid/")).status).toBe(404);
+    const ws = await harness().app.request(`/api/v1/browser/desktop/${SID}/api/websockets`, {
+      headers: { upgrade: "websocket", origin: "https://evil.example", host: "media.example.com" },
+    });
+    expect(ws.status).toBe(403);
+  });
+});
diff --git a/apps/server/src/modules/desktop/desktop.ts b/apps/server/src/modules/desktop/desktop.ts
new file mode 100644
index 00000000..621f2b47
--- /dev/null
+++ b/apps/server/src/modules/desktop/desktop.ts
@@ -0,0 +1,380 @@
+import { createHmac } from "node:crypto";
+import type { DB, Kysely } from "@umt/db";
+import type { Context } from "hono";
+import type { AuthEnv } from "../../http/auth.ts";
+import { ApiException } from "../../http/errors.ts";
+import type { ModuleApp } from "../types.ts";
+
+// 原站视图桌面模式(docs/design/webtop-remote-browser.md §5.6、docs/runbook/browser.md §8):
+// /api/v1/browser/desktop/{sessionId}/* 反代浏览器桌面容器里的 Selkies(nginx :3000,静态客户端 + /api/websockets)。
+// - 只接受控制台 cookie 会话(外部 API Key、DEV key 一律拒绝);Selkies 端口不映射到宿主,唯一入口是这里。
+// - Selkies 口令由服务端注入(Authorization: Basic),浏览器永远拿不到:持有该会话 active 人工租约的本人 → 控制口令,
+//   其他人 → 只读口令(Selkies 服务端把只读口令的连接限为 viewer:键鼠/剪贴板输入一律丢弃)。
+// - 口令 = HMAC-SHA256(CAMOFOX_ACCESS_KEY, "umt-desktop/control" | "umt-desktop/view") 的前 48 位 hex,
+//   容器 init-umt-desktop 用 openssl 算同一个值,不另设密钥。
+// - WebSocket 连接期间每隔 roleCheckMs 重新判定角色;租约交还/过期/被夺、控制台会话失效时主动断开,
+//   Selkies 客户端自动重连并按新角色认证(降级为只读)。
+
+export const DESKTOP_USER = "umt";
+const SESSION_ID_RE = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
+/** 客户端能拿到的路径前缀里 _status 保留给本模块;其余原样转给 Selkies */
+const STATUS_SEGMENT = "_status";
+
+export type DesktopRole = "controller" | "viewer";
+
+export function deriveDesktopPasswords(accessKey: string): Record<DesktopRole, string> {
+  const d = (label: string) => createHmac("sha256", accessKey).update(label).digest("hex").slice(0, 48);
+  return { controller: d("umt-desktop/control"), viewer: d("umt-desktop/view") };
+}
+
+export function basicAuth(password: string): string {
+  return `Basic ${btoa(`${DESKTOP_USER}:${password}`)}`;
+}
+
+/**
+ * 桌面上游地址:BROWSER_DESKTOP_URL 显式指定;否则取 BROWSER_PROVIDER_URL 的主机、端口换成 3000
+ * (compose 缺省 http://camofox:9377 → http://camofox:3000)。
+ */
+export function desktopUpstream(env: { providerUrl?: string; desktopUrl?: string }): string | null {
+  if (env.desktopUrl) return env.desktopUrl.replace(/\/+$/, "");
+  if (!env.providerUrl) return null;
+  try {
+    const u = new URL(env.providerUrl);
+    u.port = "3000";
+    u.pathname = "";
+    return u.origin;
+  } catch {
+    return null;
+  }
+}
+
+export type SessionCheck =
+  | { ok: true; role: DesktopRole; leaseExpiresAt: string | null }
+  | { ok: false; code: "not_found" | "closed" | "unsupported"; message: string };
+
+export interface DesktopDeps {
+  /** 上游 Selkies(nginx)根地址;null = 未配置 */
+  upstream: string | null;
+  /** 访问凭据(派生桌面口令);null = 未配置 */
+  accessKey: string | null;
+  /** 会话/租约判定:holder 与 browser 模块写租约时同一格式 `<principal.kind>:<name>` */
+  checkSession(sessionId: string, holder: string): Promise<SessionCheck>;
+  /** 控制台会话是否仍有效(WS 长连接期间复查) */
+  consoleSessionValid(sessionRowId: string): Promise<boolean>;
+  fetch?: typeof fetch;
+  /** 角色复查间隔 */
+  roleCheckMs?: number;
+  /** 可用性探测缓存 */
+  probeTtlMs?: number;
+  log?: (msg: string, extra?: Record<string, unknown>) => void;
+}
+
+/** 数据库实现:会话必须属于环境变量登记的浏览器服务(camofox-env,即 compose 自带的桌面容器) */
+export function dbSessionChecks(db: Kysely<DB>): Pick<DesktopDeps, "checkSession" | "consoleSessionValid"> {
+  return {
+    async checkSession(sessionId, holder) {
+      const row = await db
+        .selectFrom("browser_session as s")
+        .innerJoin("browser_provider as p", "p.id", "s.provider_id")
+        .select(["s.id", "s.closed_at", "p.config", "p.kind"])
+        .where("s.id", "=", sessionId)
+        .executeTakeFirst();
+      if (!row) return { ok: false, code: "not_found", message: "浏览器会话不存在" };
+      if (row.closed_at) return { ok: false, code: "closed", message: "浏览器会话已关闭" };
+      const cfg = (row.config ?? {}) as Record<string, unknown>;
+      if (row.kind !== "camofox" || cfg.managedBy !== "env")
+        return { ok: false, code: "unsupported", message: "只有部署自带的浏览器服务(camofox-env)支持桌面模式" };
+      const lease = await db
+        .selectFrom("browser_control_lease")
+        .select(["holder_kind", "holder", "expires_at"])
+        .where("session_id", "=", sessionId)
+        .where("status", "=", "active")
+        .executeTakeFirst();
+      const mine =
+        lease?.holder_kind === "human" && lease.holder === holder && new Date(lease.expires_at).getTime() > Date.now();
+      return {
+        ok: true,
+        role: mine ? "controller" : "viewer",
+        leaseExpiresAt: mine ? new Date(lease.expires_at).toISOString() : null,
+      };
+    },
+    async consoleSessionValid(id) {
+      const s = await db
+        .selectFrom("admin_session")
+        .select(["expires_at", "revoked_at"])
+        .where("id", "=", id)
+        .executeTakeFirst();
+      return !!s && !s.revoked_at && new Date(s.expires_at).getTime() > Date.now();
+    },
+  };
+}
+
+/** 只允许控制台会话;返回租约 holder 与会话行 id */
+function consoleActor(c: Context<AuthEnv>): { holder: string; sessionRowId: string } {
+  const p = c.get("principal");
+  const s = c.get("session");
+  if (!p) throw new ApiException("unauthorized", "未登录");
+  if (p.kind !== "admin_session" || !s) throw new ApiException("forbidden", "桌面模式只能在控制台登录后使用");
+  return { holder: `${p.kind}:${p.name ?? p.id}`, sessionRowId: s.id };
+}
+
+function sessionIdOf(c: Context<AuthEnv>): string {
+  const id = c.req.param("sessionId") ?? "";
+  if (!SESSION_ID_RE.test(id)) throw new ApiException("not_found", "浏览器会话不存在");
+  return id;
+}
+
+async function requireSession(deps: DesktopDeps, sessionId: string, holder: string) {
+  const r = await deps.checkSession(sessionId, holder);
+  if (!r.ok) throw new ApiException(r.code === "not_found" ? "not_found" : "conflict", r.message);
+  return r;
+}
+
+/** 浏览器发来的 WebSocket 必须同源(cookie 会话 + WS 无 CORS,防跨站劫持) */
+export function sameOrigin(req: Request): boolean {
+  const origin = req.headers.get("origin");
+  if (!origin) return false;
+  const host = req.headers.get("x-forwarded-host") ?? req.headers.get("host");
+  try {
+    return !!host && new URL(origin).host === host.split(",")[0]?.trim();
+  } catch {
+    return false;
+  }
+}
+
+const HOP_BY_HOP = [
+  "connection",
+  "keep-alive",
+  "proxy-authenticate",
+  "proxy-authorization",
+  "te",
+  "trailer",
+  "transfer-encoding",
+  "upgrade",
+  "content-length",
+  "content-encoding",
+];
+
+/** 转给上游的请求头:去掉 cookie / 本站鉴权 / 逐跳头,Authorization 由服务端决定 */
+function upstreamHeaders(req: Request, auth: string | null): Headers {
+  const h = new Headers();
+  for (const k of ["accept", "accept-language", "content-type", "range", "if-none-match", "if-modified-since"]) {
+    const v = req.headers.get(k);
+    if (v) h.set(k, v);
+  }
+  h.set("accept-encoding", "identity");
+  if (auth) h.set("authorization", auth);
+  return h;
+}
+
+/** 回给浏览器的响应头:只允许本站 iframe 嵌入;上游的认证质询不外露(否则浏览器弹 Basic 登录框) */
+function downstreamHeaders(res: Response): Headers {
+  const h = new Headers(res.headers);
+  for (const k of HOP_BY_HOP) h.delete(k);
+  h.delete("www-authenticate");
+  h.delete("set-cookie");
+  h.set("content-security-policy", "frame-ancestors 'self'");
+  h.set("x-frame-options", "SAMEORIGIN");
+  h.set("referrer-policy", "same-origin");
+  return h;
+}
+
+export interface DesktopStatus {
+  available: boolean;
+  /** 不可用原因(给界面说明,回退截图模式) */
+  reason: string | null;
+  role: DesktopRole;
+  leaseExpiresAt: string | null;
+  /** 桌面客户端相对地址(iframe src) */
+  path: string;
+  /** WebCodecs / 剪贴板只在安全上下文可用:非 HTTPS(且非 localhost)时前端自动回退截图模式 */
+  requiresSecureContext: true;
+}
+
+export function registerDesktopRoutes(app: ModuleApp, deps: DesktopDeps): { closeAll(): void } {
+  const doFetch = deps.fetch ?? fetch;
+  const roleCheckMs = deps.roleCheckMs ?? 3000;
+  const probeTtl = deps.probeTtlMs ?? 15_000;
+  const passwords = deps.accessKey ? deriveDesktopPasswords(deps.accessKey) : null;
+  const log = deps.log ?? (() => {});
+  const live = new Set<() => void>();
+  let probe: { at: number; ok: boolean; reason: string | null } | null = null;
+
+  async function probeUpstream(): Promise<{ ok: boolean; reason: string | null }> {
+    if (!deps.upstream)
+      return { ok: false, reason: "未配置浏览器桌面地址(BROWSER_PROVIDER_URL / BROWSER_DESKTOP_URL)" };
+    if (!passwords) return { ok: false, reason: "浏览器服务未设置访问凭据 CAMOFOX_ACCESS_KEY，桌面模式不可用" };
+    if (probe && Date.now() - probe.at < probeTtl) return probe;
+    let ok = false;
+    let reason: string | null = null;
+    try {
+      const r = await doFetch(`${deps.upstream}/`, { signal: AbortSignal.timeout(2500) });
+      await r.body?.cancel();
+      ok = r.ok;
+      if (!ok) reason = `浏览器桌面返回 ${r.status}`;
+    } catch {
+      reason = "浏览器服务没有桌面（旧版 camofox 镜像或桌面未启动），使用截图模式";
+    }
+    probe = { at: Date.now(), ok, reason };
+    return probe;
+  }
+
+  app.get(`/browser/desktop/:sessionId/${STATUS_SEGMENT}`, async (c) => {
+    const { holder } = consoleActor(c);
+    const sessionId = sessionIdOf(c);
+    const s = await requireSession(deps, sessionId, holder);
+    const p = await probeUpstream();
+    const data: DesktopStatus = {
+      available: p.ok,
+      reason: p.reason,
+      role: s.role,
+      leaseExpiresAt: s.leaseExpiresAt,
+      path: `/api/v1/browser/desktop/${sessionId}/`,
+      requiresSecureContext: true,
+    };
+    return c.json({ ok: true, data });
+  });
+
+  // Selkies 客户端用相对路径(静态资源、api/websockets),目录地址必须以 / 结尾
+  app.get("/browser/desktop/:sessionId", (c) => {
+    consoleActor(c);
+    return c.redirect(`/api/v1/browser/desktop/${sessionIdOf(c)}/`, 302);
+  });
+
+  app.all("/browser/desktop/:sessionId/*", async (c) => {
+    const { holder, sessionRowId } = consoleActor(c);
+    const sessionId = sessionIdOf(c);
+    if (!deps.upstream || !passwords) throw new ApiException("upstream_unavailable", "桌面模式未启用");
+    const prefix = `/api/v1/browser/desktop/${sessionId}/`;
+    const url = new URL(c.req.url);
+    const rest = url.pathname.startsWith(prefix) ? url.pathname.slice(prefix.length) : "";
+    if (rest.split("/").some((seg) => seg === ".." || seg === ".")) throw new ApiException("bad_request", "路径不合法");
+    const target = `${deps.upstream}/${rest}${url.search}`;
+    const isApi = rest === "api" || rest.startsWith("api/");
+
+    if (c.req.header("upgrade")?.toLowerCase() === "websocket") {
+      if (!sameOrigin(c.req.raw)) throw new ApiException("forbidden", "桌面连接必须来自本站页面");
+      const s = await requireSession(deps, sessionId, holder);
+      return bridgeWebSocket(c.req.raw, target.replace(/^http/, "ws"), s.role, {
+        auth: (role) => basicAuth(passwords[role]),
+        recheck: async () => {
+          if (!(await deps.consoleSessionValid(sessionRowId))) return null;
+          const r = await deps.checkSession(sessionId, holder);
+          return r.ok ? r.role : null;
+        },
+        roleCheckMs,
+        live,
+        log,
+      });
+    }
+
+    // HTTP:静态客户端(nginx,无需口令)与 Selkies HTTP 接口(api/*,要口令)
+    let auth: string | null = null;
+    if (isApi) {
+      const s = await requireSession(deps, sessionId, holder);
+      auth = basicAuth(passwords[s.role]);
+    }
+    const method = c.req.method;
+    if (!["GET", "HEAD"].includes(method) && !isApi) throw new ApiException("bad_request", "不支持的请求");
+    let res: Response;
+    try {
+      res = await doFetch(target, {
+        method,
+        headers: upstreamHeaders(c.req.raw, auth),
+        body: ["GET", "HEAD"].includes(method) ? undefined : c.req.raw.body,
+        redirect: "manual",
+      });
+    } catch {
+      throw new ApiException("upstream_unavailable", "浏览器桌面不可达");
+    }
+    if (res.status === 401) {
+      await res.body?.cancel();
+      log("selkies rejected desktop credentials", { status: 401 });
+      throw new ApiException(
+        "upstream_unavailable",
+        "浏览器桌面口令不匹配。检查 app 与浏览器容器的 CAMOFOX_ACCESS_KEY 是否一致",
+      );
+    }
+    return new Response(res.body, { status: res.status, headers: downstreamHeaders(res) });
+  });
+
+  return {
+    closeAll() {
+      for (const close of [...live]) close();
+    },
+  };
+}
+
+interface BridgeOpts {
+  auth(role: DesktopRole): string;
+  /** 返回当前应有的角色;null = 不再允许(会话/控制台会话失效) */
+  recheck(): Promise<DesktopRole | null>;
+  roleCheckMs: number;
+  live: Set<() => void>;
+  log(msg: string, extra?: Record<string, unknown>): void;
+}
+
+/** 浏览器 ⇄ app ⇄ Selkies 的 WebSocket 双向转发;角色变化时断开(客户端重连后按新角色认证) */
+function bridgeWebSocket(req: Request, target: string, role: DesktopRole, o: BridgeOpts): Response {
+  const protocols = (req.headers.get("sec-websocket-protocol") ?? "")
+    .split(",")
+    .map((s) => s.trim())
+    .filter(Boolean);
+  const { socket: client, response } = Deno.upgradeWebSocket(req, protocols[0] ? { protocol: protocols[0] } : {});
+  client.binaryType = "arraybuffer";
+  // Deno 的客户端 WebSocket 支持自定义请求头;不带 Origin(Selkies 对无 Origin 的非浏览器客户端放行)
+  // (tsc 按 DOM 类型只认 protocols 参数;Deno 运行时接受 { headers, protocols })
+  const wsOptions = { headers: { authorization: o.auth(role) }, ...(protocols.length ? { protocols } : {}) };
+  const upstream = new WebSocket(target, wsOptions as unknown as string[]);
+  upstream.binaryType = "arraybuffer";
+  const pending: (string | ArrayBuffer)[] = [];
+  let closed = false;
+  let timer: ReturnType<typeof setInterval> | undefined;
+
+  const close = (code = 1000, reason = "") => {
+    if (closed) return;
+    closed = true;
+    if (timer !== undefined) clearInterval(timer);
+    o.live.delete(close);
+    try {
+      if (client.readyState <= WebSocket.OPEN) client.close(code, reason);
+    } catch {
+      /* 已关闭 */
+    }
+    try {
+      if (upstream.readyState <= WebSocket.OPEN) upstream.close(1000);
+    } catch {
+      /* 已关闭 */
+    }
+  };
+  o.live.add(close);
+
+  client.onmessage = (e) => {
+    if (upstream.readyState === WebSocket.OPEN) upstream.send(e.data);
+    else if (upstream.readyState === WebSocket.CONNECTING) pending.push(e.data);
+  };
+  upstream.onopen = () => {
+    for (const m of pending.splice(0)) upstream.send(m);
+  };
+  upstream.onmessage = (e) => {
+    if (client.readyState === WebSocket.OPEN) client.send(e.data);
+  };
+  client.onclose = () => close();
+  upstream.onclose = (e) => close(e.code === 1000 || e.code === 1001 ? 1000 : 1011, "upstream closed");
+  client.onerror = () => close(1011);
+  upstream.onerror = () => {
+    o.log("desktop upstream websocket error");
+    close(1011, "upstream error");
+  };
+
+  timer = setInterval(async () => {
+    try {
+      const next = await o.recheck();
+      if (next === null) close(4401, "session ended");
+      else if (next !== role) close(4000, `role ${next}`);
+    } catch (err) {
+      o.log("desktop role recheck failed", { err: String(err) });
+    }
+  }, o.roleCheckMs);
+  return response;
+}
diff --git a/apps/server/src/modules/desktop/index.ts b/apps/server/src/modules/desktop/index.ts
new file mode 100644
index 00000000..a05deae4
--- /dev/null
+++ b/apps/server/src/modules/desktop/index.ts
@@ -0,0 +1,32 @@
+import type { ServerContext, ServerModule } from "../types.ts";
+import { dbSessionChecks, desktopUpstream, registerDesktopRoutes } from "./desktop.ts";
+
+/**
+ * WT-1 原站视图桌面模式:/api/v1/browser/desktop/{sessionId}/* 反代浏览器桌面容器(Selkies)的 HTTP 与 WebSocket,
+ * 按人工租约注入控制 / 只读口令。只用会话 / 租约表(只读),不改浏览器模块。
+ * 桌面地址:BROWSER_DESKTOP_URL,缺省由 BROWSER_PROVIDER_URL 推出(端口换 3000)。
+ */
+export function createDesktopModule(): ServerModule {
+  let closeAll: (() => void) | null = null;
+  return {
+    name: "desktop",
+    registerRoutes(app, ctx: ServerContext) {
+      const r = registerDesktopRoutes(app, {
+        upstream: desktopUpstream({
+          providerUrl: ctx.config?.BROWSER_PROVIDER_URL,
+          desktopUrl: Deno.env.get("BROWSER_DESKTOP_URL") || undefined,
+        }),
+        accessKey: ctx.config?.BROWSER_ACCESS_KEY ?? null,
+        ...dbSessionChecks(ctx.db),
+        log: (msg, extra) => ctx.logger.warn({ component: "desktop", ...extra }, msg),
+      });
+      closeAll = r.closeAll;
+    },
+    registerTasks() {},
+    stop() {
+      closeAll?.();
+    },
+  };
+}
+
+export const desktopModule = createDesktopModule();
diff --git a/apps/server/src/modules/index.ts b/apps/server/src/modules/index.ts
index 4e6a4a55..514e3025 100644
--- a/apps/server/src/modules/index.ts
+++ b/apps/server/src/modules/index.ts
@@ -3,6 +3,7 @@ import { agentModule } from "./agent/index.ts";
 import { authSettingsModule } from "./auth-settings/index.ts";
 import { browserModule } from "./browser/index.ts";
 import { cacheModule } from "./cache/index.ts";
+import { desktopModule } from "./desktop/index.ts";
 import { fileManagerModule } from "./file-manager/index.ts";
 import { mcpModule } from "./mcp/index.ts";
 import { piModule } from "./pi/index.ts";
@@ -29,6 +30,7 @@ export const SERVER_MODULES: readonly ServerModule[] = [
   schedulesModule,
   searchModule,
   browserModule,
+  desktopModule,
   mcpModule,
   webSearchModule,
   cacheModule,
diff --git a/apps/server/test/modules.test.ts b/apps/server/test/modules.test.ts
index 744887d2..a2394ffc 100644
--- a/apps/server/test/modules.test.ts
+++ b/apps/server/test/modules.test.ts
@@ -43,7 +43,7 @@ const pingModule: ServerModule = {
 };
 
 describe("ServerModule 骨架", () => {
-  it("清单里是四个 W2 模块 + 文件管理 + Pi 上游 + 定时任务 + 全局搜索 + 浏览器 + MCP + 网页搜索 + 缓存 + 进程与健康(末尾),名字唯一", () => {
+  it("清单里是四个 W2 模块 + 文件管理 + Pi 上游 + 定时任务 + 全局搜索 + 浏览器 + 桌面反代 + MCP + 网页搜索 + 缓存 + 进程与健康(末尾),名字唯一", () => {
     expect(SERVER_MODULES.map((m) => m.name)).toEqual([
       "auth-settings",
       "sources-identity",
@@ -54,6 +54,7 @@ describe("ServerModule 骨架", () => {
       "schedules",
       "search",
       "browser",
+      "desktop",
       "mcp",
       "websearch",
       "cache",