fix(P0): unique persistent machine-id per instance + manual reset

All instances shared the image-baked machine-id (a67bf09f...), so Tencent
saw every WechatOnCloud account worldwide as one "device" — a textbook
device-farm signal triggering risk control and the forced-logout loop
reported across old and new versions.

- docker/woc-identity.sh: new /custom-cont-init.d/00-woc-identity hook —
  generates a unique machine-id on first start, persists it in the data
  volume (survives restart/upgrade/recreate), writes /etc/machine-id +
  /var/lib/dbus/machine-id, removes /.dockerenv. Existing instances get a
  fresh unique id on first upgraded start (volume lacks the file).
- regenInstanceMachineId + POST /api/admin/instances/:id/regen-machine-id:
  roll a brand-new device id and restart, for accounts re-flagged by risk
  control. Gated on the hook being present (old image → instructs upgrade).
- Admin 实例卡片「安全」弹窗新增「重置设备 ID 并重启」。

Verified: two fresh containers get distinct machine-ids; id persists across
restart; regen (rm persisted file + restart) yields a new persistent id.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

panel/server/src/docker.ts

@@ -165,6 +165,26 @@ export async function upgradeInstance(inst: Instance): Promise<void> {
   await runInstance(inst);
 }
 
+// 重置实例的设备 machine-id：删掉持久化的 .woc-machine-id 后重启，由 00-woc-identity 钩子重新生成
+// 一个全新的唯一值（相当于"换一台新设备"）。用于某账号被腾讯风控标记后手动滚新设备身份。
+// 仅对含身份钩子的新镜像有效；旧镜像（升级前）无钩子，先 throw 提示升级，避免做无用功。
+export async function regenInstanceMachineId(inst: Instance): Promise<void> {
+  const hasHook = (
+    await execCapture(inst, [
+      'sh',
+      '-c',
+      'test -f /custom-cont-init.d/00-woc-identity && echo yes || echo no',
+    ])
+  ).trim();
+  if (hasHook !== 'yes') {
+    throw new Error('该实例运行的是旧镜像（无设备身份模块），请先「升级实例」后再重置设备 ID');
+  }
+  // 删除持久化文件；重启时钩子检测到缺失 → 生成新的唯一 machine-id 并写回卷
+  await execCapture(inst, ['sh', '-c', 'rm -f /config/.woc-machine-id']);
+  await stopInstance(inst);
+  await runInstance(inst);
+}
+
 // 停止实例容器（保留容器与数据卷，可再启动）。
 export async function stopInstance(inst: Instance): Promise<void> {
   try {

panel/server/src/index.ts

@@ -53,6 +53,7 @@ import {
   listOrphanContainers,
   removeContainerById,
   instanceMemoryMB,
+  regenInstanceMachineId,
 } from './docker.js';
 import { createSession, getSession, destroySession, destroyUserSessions } from './sessions.js';
 import { parseHost, parseAllowedHosts, isAllowedHost } from './host-guard.js';
@@ -395,6 +396,21 @@ app.put('/api/admin/instances/:id/mem-limits', async (req, reply) => {
   }
 });
 
+// 重置实例的设备 machine-id（仅管理员）：滚一个全新的唯一设备身份并重启实例。
+// 用于某微信账号被腾讯按"设备风险"标记、登录即被踢时，像"换台新设备"一样恢复。会触发重新扫码登录。
+app.post('/api/admin/instances/:id/regen-machine-id', async (req, reply) => {
+  if (!requireAdmin(req, reply)) return;
+  const id = (req.params as any).id;
+  const inst = findInstance(id);
+  if (!inst) return reply.code(404).send({ error: '实例不存在' });
+  try {
+    await regenInstanceMachineId(inst);
+    return { ok: true };
+  } catch (e: any) {
+    return reply.code(400).send({ error: e?.message || '重置设备 ID 失败' });
+  }
+});
+
 // 删除实例（仅管理员）：默认保留数据卷，?purge=1 才永久删聊天记录
 app.delete('/api/admin/instances/:id', async (req, reply) => {
   if (!requireAdmin(req, reply)) return;

panel/web/src/api.ts

@@ -91,6 +91,8 @@ export const api = {
       method: 'POST',
       body: JSON.stringify({ name, allowedUserIds, reuseVolume: reuseVolume || undefined }),
     }),
+  regenMachineId: (id: string) =>
+    req(`/api/admin/instances/${id}/regen-machine-id`, { method: 'POST' }),
   getInstanceMemLimits: (id: string) =>
     req<MemLimits>(`/api/admin/instances/${id}/mem-limits`),
   setInstanceMemLimits: (id: string, soft: number | null | undefined, hard: number | null | undefined) =>

panel/web/src/pages/Admin.tsx

@@ -534,6 +534,7 @@ function ResetPassword({ user, onClose, onDone }: { user: PanelUser; onClose: ()
 // hard：超过即强制重启（无视会话，防止 OOM）
 // 留空 = 使用面板全局默认（来自 env）。
 function InstanceSecurity({ inst, onClose, onDone }: { inst: InstanceWithStatus; onClose: () => void; onDone: () => void }) {
+  const { toast, confirm } = useUI();
   const [data, setData] = useState<import('../api').MemLimits | null>(null);
   // 输入字段：空串 = "使用默认"（→ 提交时映射为 null）
   const [softStr, setSoftStr] = useState('');
@@ -541,6 +542,28 @@ function InstanceSecurity({ inst, onClose, onDone }: { inst: InstanceWithStatus;
   const [err, setErr] = useState('');
   const [busy, setBusy] = useState(false);
   const [loaded, setLoaded] = useState(false);
+  const [regenBusy, setRegenBusy] = useState(false);
+
+  const regenMachineId = async () => {
+    const ok = await confirm({
+      title: '重置该实例的设备 ID？',
+      body: '会生成一个全新的设备标识（machine-id）并重启实例，相当于"换一台新设备"。微信需要重新扫码登录。适用于该账号被微信判定设备风险、登录即被强制退出的情况。',
+      danger: true,
+      confirmText: '重置并重启',
+    });
+    if (!ok) return;
+    setRegenBusy(true);
+    try {
+      await api.regenMachineId(inst.id);
+      toast('已重置设备 ID，实例正在重启，请稍后重新扫码登录', 'ok');
+      onClose();
+      onDone();
+    } catch (e: any) {
+      toast(e.message || '重置失败', 'error');
+    } finally {
+      setRegenBusy(false);
+    }
+  };
 
   // 首次加载 + 每 5s 刷新 currentMB（运行实例的实时内存）
   useEffect(() => {
@@ -664,6 +687,22 @@ function InstanceSecurity({ inst, onClose, onDone }: { inst: InstanceWithStatus;
             <div className="muted small" style={{ marginTop: 6 }}>
               提示：日常活跃内存约 1500 MiB；soft 建议略高于此（如 2000），hard 建议远低于宿主可用内存（如 3000~4000）。
             </div>
+
+            <div className="field-label" style={{ marginTop: 16 }}>设备身份（machine-id）</div>
+            <div className="muted small" style={{ lineHeight: 1.6 }}>
+              微信会用设备标识做风控。若该账号被判定<b>设备风险</b>、登录后被强制退出且反复循环，
+              可重置为一个全新的唯一设备 ID（相当于换台新设备），再重新扫码登录。会重启该实例。
+            </div>
+            <button
+              type="button"
+              className="btn"
+              style={{ marginTop: 8, alignSelf: 'flex-start' }}
+              onClick={regenMachineId}
+              disabled={regenBusy || busy}
+            >
+              {regenBusy ? '重置中…' : '↻ 重置设备 ID 并重启'}
+            </button>
+
             {err && <div className="error">{err}</div>}
           </>
         )}