fix(desktop): session persistence — refresh/login/context/empty-content 4-bug fix

1. App.tsx: add restoreSession() call on startup to prevent redirect
   to login page after refresh (isRestoring guard + BootstrapScreen)
2. CloneManager: call syncAgents() after loadClones() to restore
   currentAgent and conversation history on app load
3. zclaw-memory: add get_or_create_session() so frontend session UUID
   is persisted directly — kernel no longer creates mismatched IDs
4. openai.rs: assistant message content must be non-empty for
   Kimi/Qwen APIs — replace empty content with meaningful placeholders

Also includes admin-v2 ModelServices unified page (merge providers +
models + API keys into expandable row layout)

admin-v2/src/pages/ApiKeys.tsx

@@ -1,165 +0,0 @@
-// ============================================================
-// API 密钥管理
-// ============================================================
-
-import { useState } from 'react'
-import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
-import { Button, message, Tag, Modal, Form, Input, InputNumber, Select, Popconfirm, Space, Typography } from 'antd'
-import { PlusOutlined, CopyOutlined } from '@ant-design/icons'
-import type { ProColumns } from '@ant-design/pro-components'
-import { ProTable } from '@ant-design/pro-components'
-import { apiKeyService } from '@/services/api-keys'
-import type { TokenInfo } from '@/types'
-
-const { Text } = Typography
-
-export default function ApiKeys() {
-  const queryClient = useQueryClient()
-  const [form] = Form.useForm()
-  const [modalOpen, setModalOpen] = useState(false)
-  const [newToken, setNewToken] = useState<string | null>(null)
-
-  const { data, isLoading } = useQuery({
-    queryKey: ['api-keys'],
-    queryFn: ({ signal }) => apiKeyService.list(signal),
-  })
-
-  const createMutation = useMutation({
-    mutationFn: (data: { name: string; expires_days?: number; permissions: string[] }) =>
-      apiKeyService.create(data),
-    onSuccess: (result: TokenInfo) => {
-      message.success('创建成功')
-      queryClient.invalidateQueries({ queryKey: ['api-keys'] })
-      if (result.token) {
-        setNewToken(result.token)
-      }
-      setModalOpen(false)
-      form.resetFields()
-    },
-    onError: (err: Error) => message.error(err.message || '创建失败'),
-  })
-
-  const revokeMutation = useMutation({
-    mutationFn: (id: string) => apiKeyService.revoke(id),
-    onSuccess: () => {
-      message.success('已撤销')
-      queryClient.invalidateQueries({ queryKey: ['api-keys'] })
-    },
-    onError: (err: Error) => message.error(err.message || '撤销失败'),
-  })
-
-  const columns: ProColumns<TokenInfo>[] = [
-    { title: '名称', dataIndex: 'name', width: 160 },
-    { title: '前缀', dataIndex: 'token_prefix', width: 120, render: (_, r) => <Text code>{r.token_prefix}...</Text> },
-    {
-      title: '权限',
-      dataIndex: 'permissions',
-      width: 200,
-      render: (_, r) => r.permissions?.map((p) => <Tag key={p}>{p}</Tag>),
-    },
-    {
-      title: '过期时间',
-      dataIndex: 'expires_at',
-      width: 180,
-      render: (_, r) => r.expires_at ? new Date(r.expires_at).toLocaleString('zh-CN') : '永不过期',
-    },
-    {
-      title: '最后使用',
-      dataIndex: 'last_used_at',
-      width: 180,
-      render: (_, r) => r.last_used_at ? new Date(r.last_used_at).toLocaleString('zh-CN') : '-',
-    },
-    {
-      title: '创建时间',
-      dataIndex: 'created_at',
-      width: 180,
-      render: (_, r) => new Date(r.created_at).toLocaleString('zh-CN'),
-    },
-    {
-      title: '操作',
-      width: 100,
-      render: (_, record) => (
-        <Popconfirm title="确定撤销此密钥？撤销后无法恢复。" onConfirm={() => revokeMutation.mutate(record.id)}>
-          <Button size="small" danger>撤销</Button>
-        </Popconfirm>
-      ),
-    },
-  ]
-
-  const handleCreate = async () => {
-    const values = await form.validateFields()
-    createMutation.mutate(values)
-  }
-
-  const copyToken = () => {
-    if (newToken) {
-      navigator.clipboard.writeText(newToken)
-      message.success('已复制到剪贴板')
-    }
-  }
-
-  return (
-    <div>
-      <ProTable<TokenInfo>
-        columns={columns}
-        dataSource={data?.items ?? []}
-        loading={isLoading}
-        rowKey="id"
-        search={false}
-        toolBarRender={() => [
-          <Button key="add" type="primary" icon={<PlusOutlined />} onClick={() => { form.resetFields(); setModalOpen(true) }}>
-            创建密钥
-          </Button>,
-        ]}
-        pagination={{
-          total: data?.total ?? 0,
-          pageSize: data?.page_size ?? 20,
-          current: data?.page ?? 1,
-          showSizeChanger: false,
-        }}
-      />
-
-      <Modal
-        title="创建 API 密钥"
-        open={modalOpen}
-        onOk={handleCreate}
-        onCancel={() => { setModalOpen(false); form.resetFields() }}
-        confirmLoading={createMutation.isPending}
-      >
-        <Form form={form} layout="vertical">
-          <Form.Item name="name" label="名称" rules={[{ required: true }]}>
-            <Input placeholder="给密钥起个名字" />
-          </Form.Item>
-          <Form.Item name="expires_days" label="有效期 (天)">
-            <InputNumber min={1} placeholder="留空则永不过期" style={{ width: '100%' }} />
-          </Form.Item>
-          <Form.Item name="permissions" label="权限" rules={[{ required: true }]}>
-            <Select mode="multiple" placeholder="选择权限" options={[
-              { value: 'relay:use', label: '中转使用' },
-              { value: 'model:read', label: '模型读取' },
-              { value: 'config:read', label: '配置读取' },
-            ]} />
-          </Form.Item>
-        </Form>
-      </Modal>
-
-      <Modal
-        title="密钥创建成功"
-        open={!!newToken}
-        onOk={() => setNewToken(null)}
-        onCancel={() => setNewToken(null)}
-      >
-        <p>请立即保存此密钥，关闭后将无法再次查看：</p>
-        <Input.TextArea
-          value={newToken || ''}
-          rows={3}
-          readOnly
-          addonAfter={<CopyOutlined onClick={copyToken} style={{ cursor: 'pointer' }} />}
-        />
-        <Button type="primary" icon={<CopyOutlined />} onClick={copyToken} style={{ marginTop: 8 }}>
-          复制密钥
-        </Button>
-      </Modal>
-    </div>
-  )
-}