diff --git a/apps/web/src/layouts/MainLayout.css b/apps/web/src/layouts/MainLayout.css
index 0657489..810437c 100644
--- a/apps/web/src/layouts/MainLayout.css
+++ b/apps/web/src/layouts/MainLayout.css
@@ -102,6 +102,25 @@
     gap: 12px;
 }
 
+/* 页头平台选择器：图标 + 无边框下拉，视觉与用户触发区一致 */
+.platform-selector {
+    display: flex;
+    align-items: center;
+    gap: 4px;
+    padding: 2px 8px;
+    border-radius: 6px;
+    transition: background 0.2s;
+}
+
+.platform-selector:hover {
+    background: #f3f4f6;
+}
+
+.platform-selector-icon {
+    color: var(--primary-color);
+    font-size: 15px;
+}
+
 /* 头像 + 用户名触发区：hover 有浅色背景反馈，暗示可下拉 */
 .header-user-trigger {
     display: flex;
diff --git a/apps/web/src/layouts/MainLayout.tsx b/apps/web/src/layouts/MainLayout.tsx
index 56f8400..26683aa 100644
--- a/apps/web/src/layouts/MainLayout.tsx
+++ b/apps/web/src/layouts/MainLayout.tsx
@@ -10,6 +10,7 @@ import {
     UserOutlined,
 } from '@ant-design/icons';
 import SidebarMenu from './SidebarMenu';
+import PlatformSelector from './PlatformSelector';
 import { getBreadcrumbItems } from './menuConfig';
 import { useSession } from '@/services/session';
 import './MainLayout.css';
@@ -156,6 +157,7 @@ const MainLayout = () => {
                     </div>
                     {session && (
                         <div className="header-right">
+                            <PlatformSelector />
                             <Dropdown
                                 menu={{ items: userMenuItems, onClick: handleUserMenuClick }}
                                 trigger={['hover']}
diff --git a/apps/web/src/layouts/PlatformSelector.tsx b/apps/web/src/layouts/PlatformSelector.tsx
new file mode 100644
index 0000000..ccade89
--- /dev/null
+++ b/apps/web/src/layouts/PlatformSelector.tsx
@@ -0,0 +1,46 @@
+import { GlobalOutlined } from '@ant-design/icons';
+import { Select, Tooltip } from 'antd';
+import { usePlatform } from '@/services/platform';
+
+/**
+ * 页头平台选择器：采集编辑、发布等动作按页头当前平台取得发布配置与默认店铺
+ * （docs/requirements/collector-browser-extension.md 的页头平台上下文约定）。
+ * 首次使用默认选中目录第一家（Ozon 优先），选择结果仅作为非敏感 UI 偏好本地记忆。
+ */
+const PlatformSelector = () => {
+    const {
+        platforms,
+        currentPlatform,
+        selectPlatform,
+        context,
+        contextLoading,
+    } = usePlatform();
+
+    if (platforms.length === 0) return null;
+
+    const tooltip = context?.default_store
+        ? `当前平台：${currentPlatform?.name}，默认店铺：${context.default_store.name}`
+        : '选择当前平台';
+
+    return (
+        <Tooltip title={tooltip}>
+            <div className="platform-selector">
+                <GlobalOutlined className="platform-selector-icon" />
+                <Select
+                    variant="borderless"
+                    loading={contextLoading && !currentPlatform}
+                    value={currentPlatform?.id}
+                    onChange={selectPlatform}
+                    options={platforms.map((platform) => ({
+                        value: platform.id,
+                        label: platform.name,
+                    }))}
+                    popupMatchSelectWidth={false}
+                    aria-label="选择当前平台"
+                />
+            </div>
+        </Tooltip>
+    );
+};
+
+export default PlatformSelector;
diff --git a/apps/web/src/pages/shops/ShopsPage.css b/apps/web/src/pages/shops/ShopsPage.css
new file mode 100644
index 0000000..4c6369a
--- /dev/null
+++ b/apps/web/src/pages/shops/ShopsPage.css
@@ -0,0 +1,11 @@
+.shops-page {
+    display: flex;
+    flex-direction: column;
+    gap: 16px;
+}
+
+.shops-load-more {
+    display: flex;
+    justify-content: center;
+    margin-top: 16px;
+}
diff --git a/apps/web/src/pages/shops/ShopsPage.tsx b/apps/web/src/pages/shops/ShopsPage.tsx
index 0d2ff1f..f0bad15 100644
--- a/apps/web/src/pages/shops/ShopsPage.tsx
+++ b/apps/web/src/pages/shops/ShopsPage.tsx
@@ -1,8 +1,624 @@
-import PagePlaceholder from '@/components/PagePlaceholder';
+import { useCallback, useEffect, useMemo, useState } from 'react';
+import {
+    App as AntdApp,
+    Button,
+    Card,
+    Dropdown,
+    Empty,
+    Form,
+    Input,
+    Modal,
+    Select,
+    Space,
+    Switch,
+    Table,
+    Tag,
+    Tooltip,
+    Typography,
+} from 'antd';
+import type { MenuProps, TableProps } from 'antd';
+import {
+    ApiOutlined,
+    CloudDownloadOutlined,
+    DeleteOutlined,
+    MoreOutlined,
+    PlusOutlined,
+    ReloadOutlined,
+    WarningFilled,
+} from '@ant-design/icons';
+import axios from 'axios';
+import type { Store } from '@atlas/contracts';
+import { apiErrorCode, apiErrorMessage } from '@/services/api';
+import { storesApi } from '@/services/stores';
+import { usePlatform } from '@/services/platform';
+import './ShopsPage.css';
 
-/** 店铺管理：绑定平台店铺授权与水印（业务模块尚未实现） */
-const ShopsPage = () => (
-    <PagePlaceholder title="店铺管理" description="绑定平台店铺授权与水印，模块开发中。" />
-);
+const STORE_STATUS_MAP: Record<string, { color: string; text: string }> = {
+    verifying: { color: 'gold', text: '验证中' },
+    active: { color: 'green', text: '正常' },
+    credential_invalid: { color: 'red', text: '凭据无效' },
+    sync_error: { color: 'orange', text: '同步异常' },
+    disabled: { color: 'default', text: '已停用' },
+    deleted: { color: 'default', text: '已删除' },
+};
+
+const CREDENTIAL_STATUS_MAP: Record<string, { color: string; text: string }> = {
+    unknown: { color: 'default', text: '未验证' },
+    valid: { color: 'green', text: '凭据有效' },
+    invalid: { color: 'red', text: '凭据无效' },
+    expired: { color: 'red', text: '已过期' },
+    rotation_required: { color: 'gold', text: '待轮换' },
+};
+
+function formatDateTime(value: string | null): string {
+    if (!value) return '—';
+    const date = new Date(value);
+    return Number.isNaN(date.getTime())
+        ? '—'
+        : date.toLocaleString('zh-CN', { hour12: false });
+}
+
+interface CreateFormValues {
+    name: string;
+    client_id: string;
+    api_key: string;
+    currency_code: string;
+    is_default: boolean;
+    note?: string;
+}
+
+interface EditFormValues {
+    name: string;
+    currency_code: string;
+    note?: string;
+    api_key?: string;
+}
+
+/**
+ * 店铺管理页，契约见 docs/api/stores-and-platforms.md。
+ * 列表按页头当前平台过滤（platform_id 查询参数）；创建与密钥替换为异步验证，
+ * Worker 消费验证操作前店铺会停留在「验证中」状态。
+ */
+const ShopsPage = () => {
+    const { message, modal } = AntdApp.useApp();
+    const {
+        currentPlatform,
+        platforms,
+        error: platformError,
+        reload,
+        refreshContext,
+    } = usePlatform();
+
+    const [stores, setStores] = useState<Store[]>([]);
+    const [nextCursor, setNextCursor] = useState<string | null>(null);
+    const [loading, setLoading] = useState(false);
+    const [loadingMore, setLoadingMore] = useState(false);
+    const [pendingStoreId, setPendingStoreId] = useState<string | null>(null);
+
+    const [createOpen, setCreateOpen] = useState(false);
+    const [creating, setCreating] = useState(false);
+    const [createForm] = Form.useForm<CreateFormValues>();
+
+    const [editingStore, setEditingStore] = useState<Store | null>(null);
+    const [saving, setSaving] = useState(false);
+    const [editForm] = Form.useForm<EditFormValues>();
+
+    const platformId = currentPlatform?.id ?? null;
+    const currencyOptions = useMemo(
+        () =>
+            (currentPlatform?.supported_currencies ?? []).map((code) => ({
+                value: code,
+                label: code,
+            })),
+        [currentPlatform]
+    );
+
+    const loadStores = useCallback(
+        async (targetPlatformId: string) => {
+            setLoading(true);
+            try {
+                const result = await storesApi.list(targetPlatformId);
+                setStores(result.data);
+                setNextCursor(result.meta.next_cursor);
+            } catch (err) {
+                message.error(apiErrorMessage(err));
+            } finally {
+                setLoading(false);
+            }
+        },
+        [message]
+    );
+
+    useEffect(() => {
+        if (!platformId) return;
+        void loadStores(platformId);
+    }, [platformId, loadStores]);
+
+    const loadMore = async () => {
+        if (!platformId || !nextCursor) return;
+        setLoadingMore(true);
+        try {
+            const result = await storesApi.list(platformId, nextCursor);
+            setStores((prev) => [...prev, ...result.data]);
+            setNextCursor(result.meta.next_cursor);
+        } catch (err) {
+            message.error(apiErrorMessage(err));
+        } finally {
+            setLoadingMore(false);
+        }
+    };
+
+    /** 任何变更后同时刷新列表与页头默认门店摘要 */
+    const refreshAll = useCallback(async () => {
+        if (!platformId) return;
+        await loadStores(platformId);
+        await refreshContext();
+    }, [platformId, loadStores, refreshContext]);
+
+    const openCreate = () => {
+        createForm.resetFields();
+        createForm.setFieldsValue({ is_default: stores.length === 0 });
+        setCreateOpen(true);
+    };
+
+    const handleCreate = async (values: CreateFormValues) => {
+        if (!currentPlatform) return;
+        setCreating(true);
+        try {
+            await storesApi.create({
+                platform_id: currentPlatform.id,
+                name: values.name.trim(),
+                client_id: values.client_id.trim(),
+                api_key: values.api_key,
+                currency_code: values.currency_code,
+                is_default: values.is_default,
+                note: values.note?.trim() ? values.note.trim() : null,
+            });
+            message.success('店铺已创建，凭据验证进行中，稍后可刷新查看结果');
+            setCreateOpen(false);
+            await refreshAll();
+        } catch (err) {
+            message.error(apiErrorMessage(err));
+        } finally {
+            setCreating(false);
+        }
+    };
+
+    const openEdit = (store: Store) => {
+        setEditingStore(store);
+        editForm.setFieldsValue({
+            name: store.name,
+            currency_code: store.currency_code,
+            note: store.note ?? '',
+        });
+    };
+
+    const handleEditSave = async (values: EditFormValues) => {
+        if (!editingStore) return;
+        setSaving(true);
+        try {
+            const result = await storesApi.update(
+                editingStore.id,
+                {
+                    name: values.name.trim(),
+                    currency_code: values.currency_code,
+                    note: values.note?.trim() ? values.note.trim() : null,
+                    // 留空表示保留旧密钥；填写则替换并重新触发验证
+                    ...(values.api_key ? { api_key: values.api_key } : {}),
+                },
+                { revision: editingStore.revision }
+            );
+            if (result && 'operation' in result) {
+                message.success('已保存，新密钥验证进行中，稍后可刷新查看结果');
+            } else {
+                message.success('店铺已保存');
+            }
+            setEditingStore(null);
+            await refreshAll();
+        } catch (err) {
+            // 乐观锁版本过期：提示后刷新列表，用户重新编辑拿到新 revision
+            if (axios.isAxiosError(err) && err.response?.status === 409) {
+                message.error('店铺信息已被其他操作更新，列表已刷新，请重新编辑');
+                setEditingStore(null);
+                await refreshAll();
+            } else {
+                message.error(apiErrorMessage(err));
+            }
+        } finally {
+            setSaving(false);
+        }
+    };
+
+    const withPending = async (store: Store, action: () => Promise<unknown>) => {
+        setPendingStoreId(store.id);
+        try {
+            await action();
+            await refreshAll();
+        } catch (err) {
+            message.error(apiErrorMessage(err));
+        } finally {
+            setPendingStoreId(null);
+        }
+    };
+
+    const handleSetDefault = (store: Store) =>
+        withPending(store, async () => {
+            await storesApi.setDefault(store.id);
+            message.success(`已将「${store.name}」设为默认店铺`);
+        });
+
+    const handleVerify = (store: Store) =>
+        withPending(store, async () => {
+            await storesApi.requestCredentialVerification(store.id);
+            message.success('已发起凭据验证，稍后可刷新查看结果');
+        });
+
+    const handleSyncWarehouses = (store: Store) =>
+        withPending(store, async () => {
+            await storesApi.requestWarehouseSync(store.id);
+            message.success('已发起仓库同步，稍后可刷新查看结果');
+        });
+
+    const handleDelete = (store: Store) => {
+        modal.confirm({
+            title: '删除店铺',
+            content: `仅删除 Atlas 内的店铺连接，不影响平台后台。确定删除「${store.name}」吗？`,
+            okText: '删除',
+            okButtonProps: { danger: true },
+            cancelText: '取消',
+            onOk: () =>
+                withPending(store, async () => {
+                    try {
+                        await storesApi.remove(store.id);
+                        message.success('店铺已删除');
+                    } catch (err) {
+                        if (apiErrorCode(err) === 'DEFAULT_STORE_REPLACEMENT_REQUIRED') {
+                            message.error(
+                                '该店铺是默认店铺，请先将同平台的其他店铺设为默认，再删除'
+                            );
+                            return;
+                        }
+                        throw err;
+                    }
+                }),
+        });
+    };
+
+    const rowMenu = (store: Store): MenuProps['items'] => [
+        {
+            key: 'set-default',
+            icon: <ApiOutlined />,
+            label: '设为默认店铺',
+            disabled: store.is_default,
+        },
+        { key: 'verify', icon: <ReloadOutlined />, label: '重新验证凭据' },
+        { key: 'sync', icon: <CloudDownloadOutlined />, label: '同步仓库' },
+        { type: 'divider' },
+        { key: 'delete', icon: <DeleteOutlined />, label: '删除店铺', danger: true },
+    ];
+
+    const handleRowMenuClick =
+        (store: Store): MenuProps['onClick'] =>
+        ({ key }) => {
+            if (key === 'set-default') void handleSetDefault(store);
+            else if (key === 'verify') void handleVerify(store);
+            else if (key === 'sync') void handleSyncWarehouses(store);
+            else if (key === 'delete') handleDelete(store);
+        };
+
+    const columns: TableProps<Store>['columns'] = [
+        {
+            title: '店铺名称',
+            dataIndex: 'name',
+            width: 220,
+            render: (_, store) => (
+                <Space size={6}>
+                    <span>{store.name}</span>
+                    {store.is_default && <Tag color="purple">默认</Tag>}
+                </Space>
+            ),
+        },
+        {
+            title: 'Client ID',
+            dataIndex: 'platform_client_id',
+            width: 150,
+            render: (value: string) => (
+                <Typography.Text copyable={{ text: value }}>{value}</Typography.Text>
+            ),
+        },
+        {
+            title: '币种',
+            dataIndex: 'currency_code',
+            width: 80,
+        },
+        {
+            title: '状态',
+            dataIndex: 'status',
+            width: 200,
+            render: (_, store) => {
+                const status = STORE_STATUS_MAP[store.status] ?? {
+                    color: 'default',
+                    text: store.status,
+                };
+                const credential = CREDENTIAL_STATUS_MAP[store.credential_status] ?? {
+                    color: 'default',
+                    text: store.credential_status,
+                };
+                return (
+                    <Space size={4} wrap>
+                        <Tag color={status.color}>{status.text}</Tag>
+                        <Tag color={credential.color}>{credential.text}</Tag>
+                        {store.last_error && (
+                            <Tooltip
+                                title={`${store.last_error.code}：${store.last_error.message}`}
+                            >
+                                <WarningFilled style={{ color: '#faad14' }} />
+                            </Tooltip>
+                        )}
+                    </Space>
+                );
+            },
+        },
+        {
+            title: '仓库',
+            dataIndex: 'warehouse_count',
+            width: 90,
+            render: (count: number, store) => (
+                <Tooltip
+                    title={
+                        store.warehouses_synced_at
+                            ? `同步于 ${formatDateTime(store.warehouses_synced_at)}`
+                            : '尚未同步仓库'
+                    }
+                >
+                    <span>{store.warehouses_synced_at ? count : '—'}</span>
+                </Tooltip>
+            ),
+        },
+        {
+            title: '水印模板',
+            dataIndex: 'watermark_template',
+            width: 130,
+            render: (template: Store['watermark_template']) =>
+                template ? (
+                    template.name
+                ) : (
+                    <Typography.Text type="secondary">未绑定</Typography.Text>
+                ),
+        },
+        {
+            title: '备注',
+            dataIndex: 'note',
+            ellipsis: true,
+            render: (note: string | null) =>
+                note ? (
+                    <Typography.Text ellipsis>{note}</Typography.Text>
+                ) : (
+                    <Typography.Text type="secondary">—</Typography.Text>
+                ),
+        },
+        {
+            title: '更新时间',
+            dataIndex: 'updated_at',
+            width: 170,
+            render: (value: string) => (
+                <Typography.Text type="secondary">
+                    {formatDateTime(value)}
+                </Typography.Text>
+            ),
+        },
+        {
+            title: '操作',
+            key: 'actions',
+            width: 140,
+            fixed: 'right',
+            render: (_, store) => (
+                <Space size={4}>
+                    <Button type="link" size="small" onClick={() => openEdit(store)}>
+                        编辑
+                    </Button>
+                    <Dropdown
+                        menu={{ items: rowMenu(store), onClick: handleRowMenuClick(store) }}
+                        trigger={['click']}
+                    >
+                        <Button
+                            type="text"
+                            size="small"
+                            icon={<MoreOutlined />}
+                            loading={pendingStoreId === store.id}
+                        />
+                    </Dropdown>
+                </Space>
+            ),
+        },
+    ];
+
+    if (platformError) {
+        return (
+            <Card className="shops-page">
+                <Empty description={`平台目录加载失败：${platformError}`}>
+                    <Button onClick={reload}>重试</Button>
+                </Empty>
+            </Card>
+        );
+    }
+
+    return (
+        <div className="shops-page">
+            <Card
+                title={`店铺管理${currentPlatform ? ` · ${currentPlatform.name}` : ''}`}
+                extra={
+                    <Button
+                        type="primary"
+                        icon={<PlusOutlined />}
+                        disabled={!currentPlatform}
+                        onClick={openCreate}
+                    >
+                        添加店铺
+                    </Button>
+                }
+            >
+                {platforms.length === 0 && !currentPlatform ? (
+                    <Empty description="暂无可用平台" />
+                ) : (
+                    <>
+                        <Table
+                            rowKey="id"
+                            columns={columns}
+                            dataSource={stores}
+                            loading={loading}
+                            pagination={false}
+                            scroll={{ x: 1100 }}
+                            locale={{
+                                emptyText: currentPlatform
+                                    ? `当前平台还没有店铺，点击右上角「添加店铺」完成 ${currentPlatform.name} 授权`
+                                    : '请先在页头选择平台',
+                            }}
+                        />
+                        {nextCursor && (
+                            <div className="shops-load-more">
+                                <Button loading={loadingMore} onClick={() => void loadMore()}>
+                                    加载更多
+                                </Button>
+                            </div>
+                        )}
+                    </>
+                )}
+            </Card>
+
+            <Modal
+                title={`添加${currentPlatform?.name ?? ''}店铺`}
+                open={createOpen}
+                onCancel={() => setCreateOpen(false)}
+                onOk={() => createForm.submit()}
+                confirmLoading={creating}
+                okText="创建并验证"
+                cancelText="取消"
+                destroyOnHidden
+                maskClosable={false}
+            >
+                <Form<CreateFormValues>
+                    form={createForm}
+                    layout="vertical"
+                    requiredMark={false}
+                    onFinish={handleCreate}
+                >
+                    <Form.Item
+                        name="name"
+                        label="店铺名称"
+                        required
+                        rules={[{ required: true, message: '请输入店铺名称' }]}
+                    >
+                        <Input maxLength={120} placeholder="例如：Ozon 俄罗斯主店" />
+                    </Form.Item>
+                    <Form.Item
+                        name="client_id"
+                        label="Client ID"
+                        required
+                        rules={[{ required: true, message: '请输入平台 Client ID' }]}
+                    >
+                        <Input maxLength={120} placeholder="平台后台的 Client ID" />
+                    </Form.Item>
+                    <Form.Item
+                        name="api_key"
+                        label="API Key"
+                        required
+                        rules={[{ required: true, message: '请输入平台 API Key' }]}
+                        extra="仅用于服务端加密保存与凭据验证，不会出现在日志或响应中"
+                    >
+                        <Input.Password
+                            maxLength={200}
+                            placeholder="平台后台的 API Key"
+                            autoComplete="new-password"
+                        />
+                    </Form.Item>
+                    <Form.Item
+                        name="currency_code"
+                        label="默认计价币种"
+                        required
+                        rules={[{ required: true, message: '请选择币种' }]}
+                    >
+                        <Select options={currencyOptions} placeholder="选择币种" />
+                    </Form.Item>
+                    <Form.Item
+                        name="is_default"
+                        label="设为默认店铺"
+                        valuePropName="checked"
+                    >
+                        <Switch />
+                    </Form.Item>
+                    <Form.Item
+                        name="note"
+                        label="备注"
+                        rules={[{ max: 2000, message: '备注不能超过 2000 字' }]}
+                    >
+                        <Input.TextArea rows={2} maxLength={2000} placeholder="选填" />
+                    </Form.Item>
+                </Form>
+            </Modal>
+
+            <Modal
+                title={editingStore ? `编辑店铺：${editingStore.name}` : '编辑店铺'}
+                open={!!editingStore}
+                onCancel={() => setEditingStore(null)}
+                onOk={() => editForm.submit()}
+                confirmLoading={saving}
+                okText="保存"
+                cancelText="取消"
+                destroyOnHidden
+                maskClosable={false}
+            >
+                {editingStore && (
+                    <Form<EditFormValues>
+                        form={editForm}
+                        layout="vertical"
+                        requiredMark={false}
+                        onFinish={handleEditSave}
+                    >
+                        <Form.Item
+                            name="name"
+                            label="店铺名称"
+                            required
+                            rules={[{ required: true, message: '请输入店铺名称' }]}
+                        >
+                            <Input maxLength={120} />
+                        </Form.Item>
+                        <Form.Item
+                            name="currency_code"
+                            label="默认计价币种"
+                            required
+                            rules={[{ required: true, message: '请选择币种' }]}
+                        >
+                            <Select options={currencyOptions} />
+                        </Form.Item>
+                        <Form.Item
+                            name="note"
+                            label="备注"
+                            rules={[{ max: 2000, message: '备注不能超过 2000 字' }]}
+                        >
+                            <Input.TextArea rows={2} maxLength={2000} placeholder="选填" />
+                        </Form.Item>
+                        <Form.Item
+                            name="api_key"
+                            label="替换 API Key"
+                            extra="留空保留现有密钥；填写后将替换并重新验证凭据"
+                        >
+                            <Input.Password
+                                maxLength={200}
+                                placeholder="不修改请留空"
+                                autoComplete="new-password"
+                            />
+                        </Form.Item>
+                        <Form.Item label="Client ID">
+                            <Typography.Text type="secondary">
+                                {editingStore.platform_client_id}（平台与账户不可修改）
+                            </Typography.Text>
+                        </Form.Item>
+                    </Form>
+                )}
+            </Modal>
+        </div>
+    );
+};
 
 export default ShopsPage;
diff --git a/apps/web/src/router/index.tsx b/apps/web/src/router/index.tsx
index 31b388b..a03c0ab 100644
--- a/apps/web/src/router/index.tsx
+++ b/apps/web/src/router/index.tsx
@@ -12,6 +12,7 @@ import ProfileSettingsPage from '@/pages/settings/ProfileSettingsPage';
 import RegisterPage from '@/pages/auth/RegisterPage';
 import ShopsPage from '@/pages/shops/ShopsPage';
 import WatermarksPage from '@/pages/watermarks/WatermarksPage';
+import { PlatformProvider } from '@/services/platform';
 import { useSession } from '@/services/session';
 
 /** 主布局守卫：会话恢复中显示启动屏；未认证跳登录页并记住来源路径 */
@@ -45,7 +46,10 @@ export const router = createBrowserRouter([
         path: '/',
         element: (
             <RequireSession>
-                <MainLayout />
+                {/* 平台上下文仅在登录后可用，随主布局挂载 */}
+                <PlatformProvider>
+                    <MainLayout />
+                </PlatformProvider>
             </RequireSession>
         ),
         children: [
diff --git a/apps/web/src/services/api.ts b/apps/web/src/services/api.ts
index dbd1e59..abe47a7 100644
--- a/apps/web/src/services/api.ts
+++ b/apps/web/src/services/api.ts
@@ -81,7 +81,7 @@ apiClient.interceptors.response.use(
 /**
  * 统一解包强制响应信封：成功为 { data: T }，204 No Content 无响应体
  * （docs/api/conventions.md §3.1）。服务层泛型 T 指业务负载本身；
- * 未来列表接口（{ data, meta }）在此扩展专门的解包方法以保留 meta。
+ * 列表接口使用 getList 保留分页 meta。
  */
 function unwrapEnvelope<T>(response: AxiosResponse): T {
     const body = response.data as { data?: unknown } | undefined;
@@ -91,10 +91,22 @@ function unwrapEnvelope<T>(response: AxiosResponse): T {
     return body.data as T;
 }
 
+/** 列表响应信封为 { data: T[], meta: PaginationMeta }（docs/api/conventions.md §3），meta 需要原样保留 */
+function unwrapListEnvelope<T, M>(response: AxiosResponse): { data: T[]; meta: M } {
+    const body = response.data as { data?: unknown; meta?: unknown } | undefined;
+    return {
+        data: Array.isArray(body?.data) ? (body.data as T[]) : [],
+        meta: (body?.meta ?? {}) as M,
+    };
+}
+
 export const api = {
     get: <T = unknown>(url: string, config?: AxiosRequestConfig) =>
         apiClient.get<T>(url, config).then((res) => unwrapEnvelope<T>(res)),
 
+    getList: <T = unknown, M = unknown>(url: string, config?: AxiosRequestConfig) =>
+        apiClient.get(url, config).then((res) => unwrapListEnvelope<T, M>(res)),
+
     post: <T = unknown>(url: string, data?: unknown, config?: AxiosRequestConfig) =>
         apiClient.post<T>(url, data, config).then((res) => unwrapEnvelope<T>(res)),
 
@@ -118,6 +130,14 @@ export function apiErrorMessage(error: unknown): string {
     return error instanceof Error ? error.message : String(error);
 }
 
+/** 提取业务错误码（如 VERSION_CONFLICT、DEFAULT_STORE_REPLACEMENT_REQUIRED），无则返回 null */
+export function apiErrorCode(error: unknown): string | null {
+    if (!axios.isAxiosError(error)) return null;
+    const code = (error.response?.data as { error?: { code?: unknown } } | undefined)?.error
+        ?.code;
+    return typeof code === 'string' ? code : null;
+}
+
 export interface ApiErrorDetail {
     field: string;
     code: string;
diff --git a/apps/web/src/services/platform.tsx b/apps/web/src/services/platform.tsx
new file mode 100644
index 0000000..ba0ee37
--- /dev/null
+++ b/apps/web/src/services/platform.tsx
@@ -0,0 +1,145 @@
+import {
+    createContext,
+    useCallback,
+    useContext,
+    useEffect,
+    useMemo,
+    useRef,
+    useState,
+} from 'react';
+import type { ReactNode } from 'react';
+import type { Platform, PlatformContext } from '@atlas/contracts';
+import { api, apiErrorMessage } from '@/services/api';
+
+/** 平台选择的本地记忆键：仅保存平台 id 这一非敏感 UI 偏好 */
+const PLATFORM_STORAGE_KEY = 'atlas.platform_id';
+
+interface PlatformContextValue {
+    /** 已启用的平台目录；加载失败时为空数组并置 error */
+    platforms: Platform[];
+    /** 页头当前选中的平台；目录未加载完成或为空时为 null */
+    currentPlatform: Platform | null;
+    /** 目录加载失败信息；非空时提供重试入口 */
+    error: string | null;
+    /** 当前平台的默认门店上下文（GET /api/platform-context） */
+    context: PlatformContext | null;
+    contextLoading: boolean;
+    selectPlatform: (platformId: string) => void;
+    /** 门店变更后刷新默认门店摘要 */
+    refreshContext: () => Promise<void>;
+    /** 目录加载失败后重试 */
+    reload: () => void;
+}
+
+const PlatformContextContext = createContext<PlatformContextValue | null>(null);
+
+/** 平台上下文：页头平台选择器的数据源，门店等模块据此确定当前平台（目录接口将 Ozon 排在最前） */
+export function PlatformProvider({ children }: { children: ReactNode }) {
+    const [platforms, setPlatforms] = useState<Platform[]>([]);
+    const [selectedId, setSelectedId] = useState<string | null>(() =>
+        localStorage.getItem(PLATFORM_STORAGE_KEY)
+    );
+    const [error, setError] = useState<string | null>(null);
+    const [context, setContext] = useState<PlatformContext | null>(null);
+    const [contextLoading, setContextLoading] = useState(false);
+    // 快速切换平台时丢弃过期响应与 loading：只接受最后一次请求的结果
+    const contextRequestIdRef = useRef(0);
+
+    const loadPlatforms = useCallback(async () => {
+        setError(null);
+        try {
+            const list = await api.get<Platform[]>('/platforms');
+            setPlatforms(list);
+            // 已保存的选择失效（平台下线或首次使用）时回退到目录第一家（Ozon 优先）
+            setSelectedId((prev) =>
+                prev && list.some((item) => item.id === prev) ? prev : (list[0]?.id ?? null)
+            );
+        } catch (err) {
+            setError(apiErrorMessage(err));
+        }
+    }, []);
+
+    useEffect(() => {
+        void loadPlatforms();
+    }, [loadPlatforms]);
+
+    const currentPlatform = useMemo(
+        () => platforms.find((item) => item.id === selectedId) ?? null,
+        [platforms, selectedId]
+    );
+
+    const loadContext = useCallback(async (platformId: string) => {
+        const requestId = ++contextRequestIdRef.current;
+        setContextLoading(true);
+        try {
+            const next = await api.get<PlatformContext>('/platform-context', {
+                headers: { 'X-Atlas-Platform-Id': platformId },
+            });
+            if (contextRequestIdRef.current !== requestId) return;
+            setContext(next);
+        } catch {
+            // 上下文读取失败不阻塞页面：门店页等业务接口自会报错
+            if (contextRequestIdRef.current !== requestId) return;
+            setContext(null);
+        } finally {
+            if (contextRequestIdRef.current === requestId) {
+                setContextLoading(false);
+            }
+        }
+    }, []);
+
+    useEffect(() => {
+        if (!currentPlatform) {
+            setContext(null);
+            return;
+        }
+        void loadContext(currentPlatform.id);
+    }, [currentPlatform, loadContext]);
+
+    const selectPlatform = useCallback((platformId: string) => {
+        setSelectedId(platformId);
+        localStorage.setItem(PLATFORM_STORAGE_KEY, platformId);
+    }, []);
+
+    const refreshContext = useCallback(async () => {
+        if (!currentPlatform) return;
+        await loadContext(currentPlatform.id);
+    }, [currentPlatform, loadContext]);
+
+    const value = useMemo(
+        () => ({
+            platforms,
+            currentPlatform,
+            error,
+            context,
+            contextLoading,
+            selectPlatform,
+            refreshContext,
+            reload: () => void loadPlatforms(),
+        }),
+        [
+            platforms,
+            currentPlatform,
+            error,
+            context,
+            contextLoading,
+            selectPlatform,
+            refreshContext,
+            loadPlatforms,
+        ]
+    );
+
+    return (
+        <PlatformContextContext.Provider value={value}>
+            {children}
+        </PlatformContextContext.Provider>
+    );
+}
+
+export function usePlatform(): PlatformContextValue {
+    const context = useContext(PlatformContextContext);
+    if (!context) {
+        throw new Error('usePlatform 必须在 PlatformProvider 内使用');
+    }
+    return context;
+}
diff --git a/apps/web/src/services/stores.ts b/apps/web/src/services/stores.ts
new file mode 100644
index 0000000..1d48f15
--- /dev/null
+++ b/apps/web/src/services/stores.ts
@@ -0,0 +1,74 @@
+import type {
+    CreateStoreRequest,
+    CursorPaginationMeta,
+    Store,
+    StoreOperationResponse,
+    UpdateStoreRequest,
+} from '@atlas/contracts';
+import { api } from '@/services/api';
+
+export interface StoreListResult {
+    data: Store[];
+    meta: CursorPaginationMeta;
+}
+
+export interface UpdateStoreOptions {
+    /** 提交时的乐观锁版本，取自门店资源 revision */
+    revision: number;
+}
+
+/**
+ * 门店管理接口，契约见 docs/api/stores-and-platforms.md。
+ * 列表必须用 platform_id 查询参数（管理列表禁止携带 X-Atlas-Platform-Id header）。
+ */
+export const storesApi = {
+    list: (platformId: string, cursor?: string) =>
+        api.getList<Store, CursorPaginationMeta>('/stores', {
+            params: { platform_id: platformId, limit: 20, ...(cursor ? { cursor } : {}) },
+        }),
+
+    get: (storeId: string) => api.get<Store>(`/stores/${storeId}`),
+
+    /** 创建后店铺处于 verifying 状态，凭据验证由后台异步执行 */
+    create: (payload: CreateStoreRequest) =>
+        api.post<StoreOperationResponse>('/stores', payload, {
+            headers: { 'Idempotency-Key': crypto.randomUUID() },
+        }),
+
+    /**
+     * 编辑：If-Match 乐观锁。未传 api_key 返回更新后的店铺；
+     * 传入新 api_key 返回 202 与验证 operation（响应仍是 { store, operation }）。
+     */
+    update: (
+        storeId: string,
+        payload: UpdateStoreRequest,
+        options: UpdateStoreOptions
+    ) =>
+        api.patch<Store | StoreOperationResponse>(`/stores/${storeId}`, payload, {
+            headers: {
+                'If-Match': `"${options.revision}"`,
+                'Idempotency-Key': crypto.randomUUID(),
+            },
+        }),
+
+    setDefault: (storeId: string) =>
+        api.post<Store>(`/stores/${storeId}/set-default`, undefined, {
+            headers: { 'Idempotency-Key': crypto.randomUUID() },
+        }),
+
+    requestCredentialVerification: (storeId: string) =>
+        api.post<StoreOperationResponse>(`/stores/${storeId}/credential-verifications`, undefined, {
+            headers: { 'Idempotency-Key': crypto.randomUUID() },
+        }),
+
+    requestWarehouseSync: (storeId: string) =>
+        api.post<StoreOperationResponse>(`/stores/${storeId}/warehouse-syncs`, undefined, {
+            headers: { 'Idempotency-Key': crypto.randomUUID() },
+        }),
+
+    /** 删除当前默认店铺时同平台还有其他店铺会返回 422 DEFAULT_STORE_REPLACEMENT_REQUIRED */
+    remove: (storeId: string) =>
+        api.delete<void>(`/stores/${storeId}`, {
+            headers: { 'Idempotency-Key': crypto.randomUUID() },
+        }),
+};
diff --git a/docs/project/HANDOFF.md b/docs/project/HANDOFF.md
index 991f705..36f1130 100644
--- a/docs/project/HANDOFF.md
+++ b/docs/project/HANDOFF.md
@@ -6,7 +6,7 @@
 
 这是一个全新的云端产品，不是 `ozon-seller-kit` 的本地版重构。目标用户可拥有多个门店，每个门店只能绑定一个平台；平台自身可支持多个市场、国家、语言和币种。因此语言、币种、类目和发布规则不能写死为 Ozon 或中文/俄文。
 
-当前已完成 pnpm monorepo 初始化：包含 Web、NestJS API、BullMQ Worker、WXT 浏览器扩展、共享 API 契约、数据库包、本地基础设施 Compose 与依赖锁文件。API 已实现健康/readiness、集中配置与安全基础、认证、个人工作空间上下文、平台目录/上下文、门店基础管理和操作查询；真实平台验证与同步 Worker 尚未接入。Web 已具备完整前端框架（布局、路由、主题）和登录/注册页面，业务页面均为占位；Worker 与扩展为可运行骨架。不要从旧项目复制 SQLite 模型、无鉴权 API、旧 `/trial/:id` 或商品编辑页组件。可选择性复用已经验证过的纯计价公式、采集扩展思路和 AI 任务经验，但必须先适配多租户和云端边界。
+当前已完成 pnpm monorepo 初始化：包含 Web、NestJS API、BullMQ Worker、WXT 浏览器扩展、共享 API 契约、数据库包、本地基础设施 Compose 与依赖锁文件。API 已实现健康/readiness、集中配置与安全基础、认证、个人工作空间上下文、平台目录/上下文、门店基础管理和操作查询；真实平台验证与同步 Worker 尚未接入。Web 已具备完整前端框架（布局、路由、主题）、登录/注册页、页头平台选择器与店铺管理页（已接入真实 API），其余业务页面为占位；Worker 与扩展为可运行骨架。不要从旧项目复制 SQLite 模型、无鉴权 API、旧 `/trial/:id` 或商品编辑页组件。可选择性复用已经验证过的纯计价公式、采集扩展思路和 AI 任务经验，但必须先适配多租户和云端边界。
 
 当前运行时基线：Node 24.20.0、pnpm 11.25.0、PostgreSQL 18.6、Redis 7.4.11、MinIO `RELEASE.2025-09-07T16-13-09Z`；Web 默认端口为 `8100`，API 默认端口为 `8200`，扩展 dev server 默认端口为 `8110`（仅本地开发用），Worker 无 HTTP 端口。完整目录、依赖边界与版本表见 [`architecture/project-structure.md`](../architecture/project-structure.md) 和 [`architecture/technology-and-deployment.md`](../architecture/technology-and-deployment.md)。
 
@@ -36,6 +36,17 @@
 - Worker：`ioredis` 是 BullMQ 的可选 peer 依赖，pnpm 严格隔离下必须由应用显式声明，已新增 `ioredis 6.0.0`；`main.ts` 改为显式构造 IORedis 实例并设置 `maxRetriesPerRequest: null`（原生 ESM 运行必需，也是后续 BullMQ Worker 的硬性要求）。`tsx` dev 与 `node dist/main.js` 两种运行方式均验证可连接本地 Redis。
 - 扩展：WXT dev server 从默认的 3000–3010 漂移改为固定 `8110`（`EXTENSION_PORT` 可覆盖，`strictPort` 开启）；`.output/` 构建产物已加入 `.gitignore` 并移出 git 跟踪。端口约定同步更新至交接、部署与项目结构三份文档及 `.env.example`。
 
+### 1.2 开发进度（2026-09-03 下午）：店铺管理与平台上下文前端
+
+**Web 接入平台上下文与门店管理 API（契约：[`api/stores-and-platforms.md`](../api/stores-and-platforms.md)）**
+
+- 页头新增平台选择器：`services/platform.tsx` 的 `PlatformProvider` 加载 `GET /api/platforms` 目录与 `GET /api/platform-context`（`X-Atlas-Platform-Id` header），默认取目录第一家（Ozon 优先）；选择结果仅在 localStorage 保存平台 id（非敏感 UI 偏好）。页头组件 `layouts/PlatformSelector.tsx`，tooltip 展示当前平台默认店铺。
+- 店铺管理页 `pages/shops/ShopsPage.tsx` 覆盖已实现的门店接口：游标分页列表（“加载更多”）、创建（202 + operation，提示“验证中”）、编辑（`If-Match` 乐观锁，409 时刷新列表并提示重新编辑）、设为默认、手动重新验证凭据、仓库同步（凭据未验证时展示 422 脱敏错误）、软删除（`DEFAULT_STORE_REPLACEMENT_REQUIRED` 转为可操作提示）。API Key 只存在于提交瞬间的内存表单，不写入任何存储。凭据验证与仓库同步的实际执行仍依赖未实现的 Outbox Dispatcher + Worker，店铺会停留在“验证中”。
+- 基础设施：`services/api.ts` 新增 `getList`（保留 `{ data, meta }` 分页信封）与 `apiErrorCode`（业务错误码提取）；`services/stores.ts` 封装门店接口并按契约生成 `Idempotency-Key`。
+- `@atlas/contracts` 补充只读响应类型 `Platform`、`PlatformContext`、`CursorPaginationMeta`、`StoreOperationResponse`（前端 AI 按冻结契约补类型，无行为变更，后端请复核）。
+- 修复 API 阻断性 bug（跨领域改动，原因：阻断本功能联调；影响 `apps/api/src/stores/stores.controller.ts`）：tsx/esbuild 不生成 `design:paramtypes` 装饰器元数据，控制器裸类型构造参数在 dev 运行时注入 `undefined`，`GET /api/platforms` 返回 500。已改为与 `auth.controller.ts` 一致的显式 `@Inject(...)`；服务层原本就使用显式 token，不受影响。
+- 浏览器实测（全新迁移的本地 PostgreSQL 18 + Redis 7）：注册 → 平台选择器 → 创建/编辑/设默认/删除保护/同步 422 错误路径 → 刷新后会话恢复与列表持久化，全部通过；contracts/api/web typecheck 与 web production build 通过。
+
 ## 2. 已确认产品决策
 
 | 主题 | 决策 |
@@ -98,7 +109,7 @@ User → Workspace → Membership / Role
 
 1. 实现 Outbox Dispatcher 与 Worker 的首个消费链路：将 `store_credential_verification` 投递到 Worker，解密密钥后调用平台适配器，回写门店/密钥状态；失败信息必须脱敏。
 2. 在凭据验证通过后实现仓库同步 Worker、幂等 upsert 和状态回写，并补充失败重试、死信与集成测试。
-3. Web 接入真实认证和门店管理 API：登录/注册、会话刷新、平台上下文、门店列表/创建/编辑/默认切换；前端不得保存 API Key 或 refresh token。
+3. ~~Web 接入真实认证和门店管理 API~~ 已基本完成：登录/注册、会话刷新、平台上下文、门店列表/创建/编辑/默认切换/删除均已上线（见 1.2）；剩余水印绑定入口待素材/水印模块交付后接入。前端不得保存 API Key 或 refresh token。
 4. 接着实现素材直传和水印管理，再开始采集箱与商品编辑；浏览器扩展仅在采集 API 稳定后实现实际解析器。
 5. 在开始商品编辑/在线同步模块前，关闭评审文档中的 P1 事项：同商品归属约束、未映射属性持久化、乐观锁 Repository 规则、平台能力 Schema；并确认在线商品归档策略和 Client ID 编辑边界。
 
diff --git a/packages/contracts/src/stores.ts b/packages/contracts/src/stores.ts
index bf5e127..34e7fc0 100644
--- a/packages/contracts/src/stores.ts
+++ b/packages/contracts/src/stores.ts
@@ -75,3 +75,37 @@ export type Operation = {
     completed_at: string | null;
     error: { code: string; message: string } | null;
 };
+
+/** GET /api/platforms 返回的平台目录项，能力字段无配置时为 null（docs/api/stores-and-platforms.md §1）。 */
+export type Platform = {
+    id: string;
+    code: string;
+    name: string;
+    supported_currencies: string[];
+    default_market_code: string | null;
+    default_locale: string | null;
+};
+
+/** GET /api/platform-context 返回的页头上下文；没有默认店铺不是错误。 */
+export type PlatformContext = {
+    platform: { id: string; code: string; name: string };
+    default_store: {
+        id: string;
+        name: string;
+        status: string;
+        credential_status: string;
+    } | null;
+    store_count: number;
+};
+
+/** 游标分页 meta（docs/api/conventions.md），next_cursor 为 null 表示没有更多数据。 */
+export type CursorPaginationMeta = {
+    next_cursor: string | null;
+    has_more: boolean;
+};
+
+/** 创建门店与重新验证凭据等异步动作的 202 响应。 */
+export type StoreOperationResponse = {
+    store: Store;
+    operation: Operation;
+};