diff --git a/README.md b/README.md
index b9a03e9..5d9b525 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ npm run build:app
 - 出库作业已接 `/api/pda/v1/last-leg/outbound-tasks/**`：支持普通出库和一件代发任务列表/详情、托盘码/箱码/SKU/入仓码扫码拣货与核平完成；不会展示或进入派送流程。
 - 排车与出库写操作使用可恢复的稳定幂等键。网络失败保留当前任务、扫码草稿和幂等键；成功后释放键并按服务端状态恢复，避免重复完成或发车。
 - 入仓请求不手填客户、计划、分配、仓库或库位标识；身份与当前柜范围由 Token、Gateway 和服务端会话确定。页面同时支持 PDA 广播扫码与 H5 人工输入。
-- 登录、恢复和刷新会 fail-closed 校验统一 Token 的平台操作主体和冻结海外仓，并从 Auth 登录/刷新响应的顶层权限快照校验 `OVERSEAS_WAREHOUSE_PDA_OPERATOR`、`lastleg:pda:operate`，不从 JWT 解析权限；并发 401 共享一次 refresh，主体与绑定仓保持一致后原子替换统一 Token 和权限快照，并将原请求或照片上传重放一次。
+- 登录、恢复和刷新会 fail-closed 校验统一 Token 的平台操作主体和冻结海外仓，并从 Auth 登录/刷新响应的顶层权限快照校验 `OVERSEAS_WAREHOUSE_PDA_OPERATOR`、`lastleg:pda:operate`，不从 JWT 解析权限；并发 401 共享一次 refresh，主体与绑定仓保持一致后原子替换统一 Token 和权限快照，并将原请求或照片上传重放一次。刷新失败或重放后仍未授权时清空会话和作业草稿，并返回登录页；退出或重新登录后，旧请求不能重放到新会话，迟到的刷新响应也不能恢复旧会话或清除新会话。
 - 库存盘点、商品移库、换标收货/执行/复核以及库存/库位/托盘查询均已接入 `/api/pda/**` 专用接口；支持 PDA 广播扫码与 H5 人工输入，并按服务端版本、幂等键和冲突状态恢复，不调用平台、客户或内部接口。
 - 本地契约测试与 H5/App 资源编译不等于真实测试环境 HTTP 或 PDA 真机验收。
 
diff --git a/src/api/overseas.js b/src/api/overseas.js
index 19b049e..3966a6f 100644
--- a/src/api/overseas.js
+++ b/src/api/overseas.js
@@ -1,7 +1,18 @@
 import { refresh } from './auth.js'
-import { session, replaceTokens, signOut } from '../stores/session.js'
+import { session, replaceTokens, signOut, getSessionRevision } from '../stores/session.js'
 
 let refreshPromise = null
+let refreshRevision = -1
+
+function requireCurrentSession(revision) {
+	if (revision !== getSessionRevision()) throw new Error('登录会话已变更，请重新操作')
+}
+
+function expireSession(revision) {
+	if (revision !== getSessionRevision()) return
+	signOut()
+	uni.reLaunch({ url: '/pages/login/login' })
+}
 
 function errorFrom(response, fallback) {
 	const body = response?.data || {}
@@ -21,23 +32,27 @@ function successful(response, body) {
 	return response?.statusCode === 200 && ['00000', '200'].includes(String(body?.code))
 }
 
-async function refreshOverseasToken() {
+async function refreshOverseasToken(revision) {
+	requireCurrentSession(revision)
 	if (!session.refreshToken) {
-		signOut()
+		expireSession(revision)
 		throw new Error('登录状态已过期，请重新登录')
 	}
-	if (!refreshPromise) {
-		refreshPromise = refresh(session.refreshToken)
-			.then((tokens) => { replaceTokens(tokens); return session.token })
-			.catch((error) => { signOut(); throw error })
-			.finally(() => { refreshPromise = null })
+	if (!refreshPromise || refreshRevision !== revision) {
+		refreshRevision = revision
+		const pending = refresh(session.refreshToken)
+			.then((tokens) => { requireCurrentSession(revision); replaceTokens(tokens); return session.token })
+			.catch((error) => { expireSession(revision); throw error })
+			.finally(() => { if (refreshPromise === pending) refreshPromise = null })
+		refreshPromise = pending
 	}
 	return refreshPromise
 }
 
-async function tokenAfterUnauthorized(failedToken) {
+async function tokenAfterUnauthorized(failedToken, revision) {
+	requireCurrentSession(revision)
 	if (session.token && session.token !== failedToken) return session.token
-	return refreshOverseasToken()
+	return refreshOverseasToken(revision)
 }
 
 function overseasUrl(path) {
@@ -70,13 +85,17 @@ function rawRequest(method, path, data, token) {
 }
 
 export async function overseasRequest(method, path, data, retry = true) {
+	const revision = getSessionRevision()
 	console.info('[Overseas PDA API] request', { method, path })
 	const attemptedToken = session.token
 	let response = await rawRequest(method, path, data, attemptedToken)
+	requireCurrentSession(revision)
 	if (retry && unauthorized(response)) {
-		const replacementToken = await tokenAfterUnauthorized(attemptedToken)
+		const replacementToken = await tokenAfterUnauthorized(attemptedToken, revision)
 		response = await rawRequest(method, path, data, replacementToken)
 	}
+	requireCurrentSession(revision)
+	if (unauthorized(response)) expireSession(revision)
 	const body = response?.data || {}
 	console.info('[Overseas PDA API] response', { method, path, statusCode: response?.statusCode, code: body?.code,
 		message: body?.message, requestId: body?.requestId || response?.header?.['x-request-id'] || response?.header?.['X-Request-Id'],
@@ -149,27 +168,35 @@ function rawDownload(path, token) {
 }
 
 export async function overseasUpload(path, filePath, name = 'file', retry = true) {
+	const revision = getSessionRevision()
 	const attemptedToken = session.token
 	let response = await rawUpload(path, filePath, name, attemptedToken)
+	requireCurrentSession(revision)
 	let body = null
 	try { body = JSON.parse(response.data || '{}') } catch (_) { /* handled below */ }
 	if (retry && unauthorized({ ...response, data: body })) {
-		const replacementToken = await tokenAfterUnauthorized(attemptedToken)
+		const replacementToken = await tokenAfterUnauthorized(attemptedToken, revision)
 		response = await rawUpload(path, filePath, name, replacementToken)
 		try { body = JSON.parse(response.data || '{}') } catch (_) { body = null }
 	}
+	requireCurrentSession(revision)
+	if (unauthorized({ ...response, data: body })) expireSession(revision)
 	if (!successful(response, body)) throw errorFrom({ ...response, data: body }, '海外作业文件上传失败')
 	return body.data
 }
 
 export async function overseasDownload(path, options = {}) {
+	const revision = getSessionRevision()
 	const { retry = true, expectedContentTypePrefix = '' } = options
 	const attemptedToken = session.token
 	let response = await rawDownload(path, attemptedToken)
+	requireCurrentSession(revision)
 	if (retry && unauthorized(response)) {
-		const replacementToken = await tokenAfterUnauthorized(attemptedToken)
+		const replacementToken = await tokenAfterUnauthorized(attemptedToken, revision)
 		response = await rawDownload(path, replacementToken)
 	}
+	requireCurrentSession(revision)
+	if (unauthorized(response)) expireSession(revision)
 	if (response?.statusCode !== 200 || !response?.tempFilePath) {
 		throw errorFrom({ ...response, data: {} }, '签收照片下载失败')
 	}
diff --git a/src/pages/dispatch/dispatch.vue b/src/pages/dispatch/dispatch.vue
index 7af3466..31dbb60 100644
--- a/src/pages/dispatch/dispatch.vue
+++ b/src/pages/dispatch/dispatch.vue
@@ -26,12 +26,12 @@
 				</view>
 
 				<template v-if="!loading && !current">
-					<view class="list-toolbar"><view><text class="list-title">待处理排车任务</text><text class="list-count">{{ tasks.length }} 个任务</text></view><button :disabled="loading" @tap="loadTasks">刷新</button></view>
+					<view class="list-toolbar"><view><text class="list-title">排车任务</text><text class="list-count">{{ tasks.length }} 个任务</text></view><button :disabled="loading" @tap="loadTasks">刷新</button></view>
 					<view v-if="tasks.length" class="task-list">
 						<button v-for="task in tasks" :key="task.dispatchNo" class="task-card" @tap="openTask(task.dispatchNo)">
 							<view class="task-head"><view class="task-code-row"><text class="business-code">{{ task.dispatchNo || '—' }}</text><text v-if="task.dispatchNo === recentTaskNo" class="recent-badge">上次作业</text></view><text class="status-badge">{{ statusLabel(task.status) }}</text></view>
 							<text class="task-meta">任务号 {{ task.taskNo || '—' }} · 车牌 {{ task.vehiclePlate || '—' }}</text>
-							<text class="task-enter">查看并开始拣货 ›</text>
+							<text class="task-enter">查看任务详情 ›</text>
 						</button>
 					</view>
 					<view v-else-if="!error" class="fulfillment-state"><text class="state-title">暂无排车拣货任务</text><text>可刷新列表，或直接扫描排车单号恢复作业。</text></view>
diff --git a/src/stores/session.js b/src/stores/session.js
index 73a3584..c086f91 100644
--- a/src/stores/session.js
+++ b/src/stores/session.js
@@ -5,6 +5,8 @@ import { resetFulfillmentSession } from './fulfillment.js'
 import { resetWarehouseWork } from './warehouse-work.js'
 
 const SESSION_KEY = 'overseas-pda-auth-session'
+let sessionRevision = 0
+export function getSessionRevision() { return sessionRevision }
 export const PDA_ROLE = 'OVERSEAS_WAREHOUSE_PDA_OPERATOR'
 export const PDA_AUTHORITY = 'lastleg:pda:operate'
 
@@ -108,6 +110,7 @@ function persistSession() {
 }
 
 export function signIn(account, warehouse, options = {}) {
+	sessionRevision += 1
 	session.currentUser = { id: String(account.id), name: account.name, role: account.role, roles: account.roles || [], warehouse,
 		warehouseId: account.warehouseId || null, warehouseCode: account.warehouseCode || '', warehouseName: account.warehouseName || '' }
 	session.token = options.token || account.token || ''
@@ -184,6 +187,7 @@ export function restoreSession() {
 			currentUser: userFromClaims(pair, saved.currentUser), tenantId: claimId(pair.claims, 'tenant_id'),
 			apiBase: API_ROOT, authorization: pair.authorization
 		})
+		sessionRevision += 1
 		return true
 	} catch (_) {
 		signOut()
@@ -192,6 +196,7 @@ export function restoreSession() {
 }
 
 export function signOut() {
+	sessionRevision += 1
 	session.currentUser = null
 	session.token = ''
 	session.refreshToken = ''
diff --git a/tests/overseas-request.test.mjs b/tests/overseas-request.test.mjs
index 95e0a19..1a80fd3 100644
--- a/tests/overseas-request.test.mjs
+++ b/tests/overseas-request.test.mjs
@@ -22,7 +22,8 @@ function tokens(version = 'old') {
 
 function prepareSession() {
 	globalThis.uni = {
-		setStorageSync() {}, getStorageSync() {}, removeStorageSync() {}
+		setStorageSync() {}, getStorageSync() {}, removeStorageSync() {},
+		launches: [], reLaunch(options) { this.launches.push(options.url) }
 	}
 	resetOverseasRequestStateForTest(); signOut()
 	const value = tokens('old')
@@ -114,6 +115,8 @@ test('request retries only once and preserves the final request and trace identi
 	})
 	assert.equal(refreshCount, 1)
 	assert.equal(businessCalls, 2)
+	assert.equal(session.token, '')
+	assert.deepEqual(uni.launches, ['/pages/login/login'])
 })
 
 test('refresh rejection clears every local token and returns the auth trace', async () => {
@@ -133,8 +136,89 @@ test('refresh rejection clears every local token and returns the auth trace', as
 	assert.equal(session.currentUser, null)
 	assert.equal(session.token, '')
 	assert.equal(session.refreshToken, '')
+	assert.deepEqual(uni.launches, ['/pages/login/login'])
 })
 
+test('concurrent refresh rejection clears the session and navigates to login only once', async () => {
+	prepareSession()
+	let refreshCount = 0
+	uni.request = (options) => {
+		if (options.url.endsWith('/auth/refresh')) {
+			refreshCount += 1
+			return setTimeout(() => options.success(denied()), 5)
+		}
+		options.success(denied())
+	}
+	const results = await Promise.allSettled([overseasRequest('GET', '/one'), overseasRequest('GET', '/two')])
+	assert.ok(results.every(result => result.status === 'rejected'))
+	assert.equal(refreshCount, 1)
+	assert.equal(session.currentUser, null)
+	assert.deepEqual(uni.launches, ['/pages/login/login'])
+})
+
+for (const refreshSucceeds of [true, false]) {
+	test(`late refresh ${refreshSucceeds ? 'success' : 'failure'} cannot restore logout or clear a new login`, async () => {
+		for (const relogin of [false, true]) {
+			prepareSession()
+			let completeRefresh
+			let started
+			const refreshStarted = new Promise(resolve => { started = resolve })
+			let businessCalls = 0
+			uni.request = (options) => {
+				if (options.url.endsWith('/auth/refresh')) {
+					completeRefresh = () => options.success(refreshSucceeds ? ok(tokens('late')) : denied())
+					started()
+					return
+				}
+				businessCalls += 1
+				options.success(denied())
+			}
+			const pending = overseasRequest('POST', '/write')
+			await refreshStarted
+			signOut()
+			const replacement = tokens('new-login')
+			if (relogin) signInWithTokens(replacement)
+			completeRefresh()
+			await assert.rejects(pending)
+			assert.equal(session.token, relogin ? replacement.accessToken : '')
+			assert.equal(businessCalls, 1)
+			assert.deepEqual(uni.launches, [])
+		}
+	})
+}
+
+test('an old business response cannot replay with a newly logged-in session', async () => {
+	prepareSession()
+	let complete
+	let calls = 0
+	uni.request = options => { calls += 1; complete = () => options.success(denied()) }
+	const pending = overseasRequest('POST', '/write')
+	signOut()
+	const replacement = tokens('another-login')
+	signInWithTokens(replacement)
+	complete()
+	await assert.rejects(pending, /会话已变更/)
+	assert.equal(calls, 1)
+	assert.equal(session.token, replacement.accessToken)
+	assert.deepEqual(uni.launches, [])
+})
+
+for (const kind of ['upload', 'download']) {
+	test(`${kind} final unauthorized response navigates once and stops after one replay`, async () => {
+		prepareSession()
+		let refreshCount = 0
+		let calls = 0
+		uni.request = options => { refreshCount += 1; options.success(ok(tokens(kind))) }
+		uni.uploadFile = options => { calls += 1; options.success({ ...denied(), data: JSON.stringify(denied().data) }) }
+		uni.downloadFile = options => { calls += 1; options.success(denied()) }
+		await assert.rejects(kind === 'upload' ? overseasUpload('/photo', '/tmp/photo.jpg') : overseasDownload('/photo'))
+		assert.equal(refreshCount, 1)
+		assert.equal(calls, 2)
+		assert.equal(session.currentUser, null)
+		assert.deepEqual(uni.launches, ['/pages/login/login'])
+	})
+}
+
 test('photo upload refreshes and replays once while retaining the file payload', async () => {
 	const old = prepareSession(); const next = tokens('upload')
 	let refreshCount = 0; const uploads = []