diff --git a/uds-auth/lib/i18n.js b/uds-auth/lib/i18n.js
index afe96b33..899ec8b5 100644
--- a/uds-auth/lib/i18n.js
+++ b/uds-auth/lib/i18n.js
@@ -167,7 +167,7 @@ export const MESSAGES = {
     'err.invalid_workspace_root': 'workspaceRoot 必须是绝对路径',
     'err.invalid_ttl': 'TTL 超出允许范围',
     'err.invalid_outbound_host': 'outbound 白名单 host 格式无效',
-    'err.bootstrap_required': '系统尚未初始化管理员，请配置 UDS_AUTH_INITIAL_ADMIN',
+    'err.bootstrap_required': '系统尚未初始化管理员（当前扫码工号 {empNo}）。请设置环境变量 UDS_AUTH_INITIAL_ADMIN={empNo} 后重启 Harness；或先用「应急账号登录」进入，在设置中添加用户',
     'err.registration_closed': '未开放自动注册，请联系管理员',
     'err.raw_token_disabled': '原始凭证接口已关闭，请使用 outbound 代理',
     'err.caller_unauthenticated': '调用方未通过本地会话认证',
@@ -359,7 +359,7 @@ export const MESSAGES = {
     'err.invalid_workspace_root': 'workspaceRoot must be an absolute path',
     'err.invalid_ttl': 'TTL out of allowed range',
     'err.invalid_outbound_host': 'Invalid outbound host entry',
-    'err.bootstrap_required': 'Admin not initialized; set UDS_AUTH_INITIAL_ADMIN',
+    'err.bootstrap_required': 'Admin not initialized (scanned employee no. {empNo}). Set UDS_AUTH_INITIAL_ADMIN={empNo} and restart Harness, or sign in with the emergency account and add users in Settings',
     'err.registration_closed': 'Open registration is disabled; contact an admin',
     'err.raw_token_disabled': 'Raw credential API disabled; use outbound proxy',
     'err.caller_unauthenticated': 'Caller lacks a verified local session',
diff --git a/uds-auth/lib/index.js b/uds-auth/lib/index.js
index ef2a5002..ad5c0ad5 100644
--- a/uds-auth/lib/index.js
+++ b/uds-auth/lib/index.js
@@ -4,7 +4,7 @@
 
 import { requirePermission } from './middleware/auth-middleware.js'
 import { computePermissions } from './roles.js'
-import { apiError, apiOk, resolveLocale } from './i18n.js'
+import { apiError, apiOk, resolveLocale, MESSAGES } from './i18n.js'
 import { readFile, writeFile, mkdir } from 'node:fs/promises'
 import { resolve, dirname, isAbsolute, join } from 'node:path'
 import { homedir } from 'node:os'
@@ -420,6 +420,7 @@ async function handleQRProxy(req, res) {
       })
       proxyRes.on('end', () => {
         if (aborted || res.headersSent) return
+        let scannedEmpNo = ''
         void (async () => {
           let payload
           try { payload = JSON.parse(Buffer.concat(chunks).toString('utf8')) } catch {
@@ -441,6 +442,7 @@ async function handleQRProxy(req, res) {
             _logger?.warn?.('[uds-auth] qr-proxy upstream %s unexpected result code=%s bo=%s', url.hostname, top, boCode)
             return sendErr(res, req, 502, 'invalid_upstream_response', { host: url.hostname })
           }
+          scannedEmpNo = credentials.empNo
           const consumed = consumeQrChallenge(parsedBody.qrCodeKey, parsedBody.qrCodeValue,
             req.headers['x-uds-qr-binding'])
           if (!consumed.ok) return sendErr(res, req, 409, consumed.reason)
@@ -472,7 +474,11 @@ async function handleQRProxy(req, res) {
               userContext: { empNo: id, username: userContext.username, role, isAuthenticated: true } } })
         })().catch(err => {
           _logger?.warn?.('[uds-auth] qr-proxy post-scan login failed: %s %s', err?.code || '', err?.message || err)
-          if (!res.headersSent) sendErr(res, req, 502, 'login_finalize_failed', { detail: err?.code || err?.message || '' })
+          if (res.headersSent) return
+          // Codes with their own message (bootstrap_required, account_disabled, ...) must reach the user.
+          const known = err?.code && MESSAGES.zh['err.' + err.code]
+          if (known) return sendErr(res, req, 403, err.code, { empNo: scannedEmpNo })
+          sendErr(res, req, 502, 'login_finalize_failed', { detail: err?.code || err?.message || '' })
         })
       })
       proxyRes.on('error', (err) => {
@@ -886,7 +892,7 @@ async function handleBridgeBind(req, res) {
   try {
     role = await _authMiddleware.resolveRoleOnLogin(id)
   } catch (err) {
-    return sendErr(res, req, 403, err?.code || 'bootstrap_required')
+    return sendErr(res, req, 403, err?.code || 'bootstrap_required', { empNo: id })
   }
   const { bearer, bridge } = await mintLoginSession(id, userContext, 'uds', token)
   await ensureUserWorkspace(id)
diff --git a/uds-auth/package.json b/uds-auth/package.json
index 0c24da6d..892eb67d 100644
--- a/uds-auth/package.json
+++ b/uds-auth/package.json
@@ -1,6 +1,6 @@
 {
   "name": "uds-auth",
-  "version": "0.3.16",
+  "version": "0.3.17",
   "description": "UDS authentication plugin for DeepSeek Harness — trusted single-instance access control (not strong multi-tenant isolation)",
   "type": "module",
   "main": "lib/index.js",
diff --git a/uds-auth/test/net-error.test.js b/uds-auth/test/net-error.test.js
index 86e06816..73968ad2 100644
--- a/uds-auth/test/net-error.test.js
+++ b/uds-auth/test/net-error.test.js
@@ -48,4 +48,13 @@ describe('upstream error messages', () => {
       assert.equal(client.split(`"err.${code}":`).length - 1, 2, code)
     }
   })
+
+  it('bootstrap_required names the scanned employee number and the way out', () => {
+    for (const locale of ['zh', 'en']) {
+      const m = apiError('bootstrap_required', locale, { empNo: '10012345' })
+      assert.equal(m.error, 'bootstrap_required')
+      assert.match(m.message, /UDS_AUTH_INITIAL_ADMIN=10012345/)
+      assert.doesNotMatch(m.message, /\{empNo\}/)
+    }
+  })
 })