diff --git a/stores/session.js b/stores/session.js
index a5fa224..89ffc90 100644
--- a/stores/session.js
+++ b/stores/session.js
@@ -1,30 +1,15 @@
 import { reactive } from 'vue'
 import { resetPickingSession } from '@/stores/picking.js'
 import { PLATFORM_API_ROOT } from '@/config/runtime.js'
+import { decodeAccessToken } from '@/utils/jwt-claims.js'
+
+export { decodeAccessToken } from '@/utils/jwt-claims.js'
 
 const SESSION_KEY = 'pda-auth-session'
 const LOGIN_PREFERENCE_KEY = 'pda-login-account-preference'
 
 export const session = reactive({ currentUser: null, token: '', refreshToken: '', tenantId: '', apiBase: PLATFORM_API_ROOT })
 
-function decodeBase64Url(value) {
-	const normalized = value.replace(/-/g, '+').replace(/_/g, '/')
-	const padded = normalized.padEnd(Math.ceil(normalized.length / 4) * 4, '=')
-	if (typeof atob === 'function') return decodeURIComponent(Array.from(atob(padded), (char) => `%${char.charCodeAt(0).toString(16).padStart(2, '0')}`).join(''))
-	throw new Error('当前运行环境无法解析登录令牌')
-}
-
-export function decodeAccessToken(token) {
-	const payload = String(token || '').split('.')[1]
-	if (!payload) throw new Error('登录响应中的 accessToken 格式无效')
-	try {
-		return JSON.parse(decodeBase64Url(payload))
-	} catch (error) {
-		if (error.message === '当前运行环境无法解析登录令牌') throw error
-		throw new Error('登录响应中的 accessToken 无法解析')
-	}
-}
-
 export function isAccessTokenExpiring(token = session.token, skewSeconds = 30) {
 	try {
 		const expiresAt = Number(decodeAccessToken(token).exp || 0) * 1000
@@ -137,7 +122,19 @@ export function restoreSession() {
 		const claims = decodeAccessToken(saved.token)
 		if (claims.app_code !== 'PLATFORM') throw new Error('登录域无效')
 		if (claims.exp && claims.exp * 1000 <= Date.now() && !saved.refreshToken) throw new Error('登录状态已过期')
-		Object.assign(session, saved, { apiBase: saved.apiBase || PLATFORM_API_ROOT })
+		const savedUser = saved.currentUser || {}
+		Object.assign(session, saved, {
+			currentUser: {
+				...savedUser,
+				id: String(claims.user_id ?? savedUser.id ?? ''),
+				name: claims.username || savedUser.name || '仓库作业员',
+				role: Array.isArray(claims.roles) ? claims.roles.join('、') : (savedUser.role || ''),
+				roles: claims.roles || savedUser.roles || []
+			},
+			tenantId: claims.tenant_id == null ? (saved.tenantId || '') : String(claims.tenant_id),
+			apiBase: saved.apiBase || PLATFORM_API_ROOT
+		})
+		persistSession()
 		return true
 	} catch (_) {
 		signOut()
diff --git a/tests/auth-session.test.mjs b/tests/auth-session.test.mjs
index e6a1108..0cf13d4 100644
--- a/tests/auth-session.test.mjs
+++ b/tests/auth-session.test.mjs
@@ -26,10 +26,26 @@ test('refresh rotation persists the complete token pair and preserves operator c
 })
 
 test('app launch restores and validates persisted tokens before entering the workbench', async () => {
-	const [login, http] = await Promise.all([read('../pages/login/login.vue'), read('../api/http.js')])
+	const [login, http, session] = await Promise.all([read('../pages/login/login.vue'), read('../api/http.js'), read('../stores/session.js')])
 	assert.match(login, /async onLoad\(\)[\s\S]*?restoreSession\(\)[\s\S]*?await ensureAccessToken\(\)[\s\S]*?pages\/home\/home/)
 	assert.match(http, /export function ensureAccessToken\(\)/)
 	assert.match(login, /暂时无法恢复登录状态/)
+	assert.match(session, /id: String\(claims\.user_id \?\? savedUser\.id \?\? ''\)/)
+	assert.match(session, /persistSession\(\)[\s\S]*?return true/)
+})
+
+test('JWT decoding preserves 19 digit identity claims exactly', async () => {
+	const { decodeAccessToken } = await import('../utils/jwt-claims.js')
+	const payload = Buffer.from(JSON.stringify({
+		app_code: 'PLATFORM',
+		user_id: 1,
+		tenant_id: '2101483345056575489',
+		exp: 4102444800
+	}).replace('"user_id":1', '"user_id":2100885001485500418')).toString('base64url')
+	const claims = decodeAccessToken(`header.${payload}.signature`)
+	assert.equal(claims.user_id, '2100885001485500418')
+	assert.equal(claims.tenant_id, '2101483345056575489')
+	assert.equal(claims.exp, 4102444800)
 })
 
 test('confirmed session expiry clears sensitive state and redirects only once', async () => {
diff --git a/utils/jwt-claims.js b/utils/jwt-claims.js
new file mode 100644
index 0000000..b4e3410
--- /dev/null
+++ b/utils/jwt-claims.js
@@ -0,0 +1,38 @@
+const EXACT_INTEGER_CLAIMS = [
+	'user_id',
+	'userId',
+	'tenant_id',
+	'tenantId',
+	'operator_tenant_id',
+	'membership_id',
+	'overseas_warehouse_id',
+	'actor_user_id',
+	'actor_membership_id'
+]
+
+function decodeBase64Url(value) {
+	const normalized = value.replace(/-/g, '+').replace(/_/g, '/')
+	const padded = normalized.padEnd(Math.ceil(normalized.length / 4) * 4, '=')
+	if (typeof atob === 'function') return decodeURIComponent(Array.from(atob(padded), (char) => `%${char.charCodeAt(0).toString(16).padStart(2, '0')}`).join(''))
+	throw new Error('当前运行环境无法解析登录令牌')
+}
+
+function restoreExactIntegerClaims(payload, claims) {
+	for (const key of EXACT_INTEGER_CLAIMS) {
+		const match = payload.match(new RegExp(`"${key}"\\s*:\\s*(-?\\d+)`))
+		if (match) claims[key] = match[1]
+	}
+	return claims
+}
+
+export function decodeAccessToken(token) {
+	const payloadPart = String(token || '').split('.')[1]
+	if (!payloadPart) throw new Error('登录响应中的 accessToken 格式无效')
+	try {
+		const payload = decodeBase64Url(payloadPart)
+		return restoreExactIntegerClaims(payload, JSON.parse(payload))
+	} catch (error) {
+		if (error.message === '当前运行环境无法解析登录令牌') throw error
+		throw new Error('登录响应中的 accessToken 无法解析')
+	}
+}