feat(admin-v2): add LLM routing to accounts, upgrade Key Pool CRUD, extend agent template fields

- Add llm_routing field (relay/local) to AccountPublic type and Accounts page table + edit modal
- Upgrade Providers Key Pool from read-only to full CRUD with add/toggle/delete mutations
- Extend AgentTemplate type with soul_content, scenarios, welcome_message, quick_commands,
  personality, communication_style, emoji, version, source_id fields
- Add AgentTemplateAvailable lightweight interface
- Add emoji column and extended form fields (emoji, personality, soul_content, welcome_message,
  communication_style, source_id) to Agent Templates page
- Add getFull method to agent-templates service
- Fix misplaced useState import in Accounts.tsx

admin-v2/src/pages/Accounts.tsx

@@ -2,6 +2,7 @@
 // 账号管理
 // ============================================================
 
+import { useState } from 'react'
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
 import { Button, message, Tag, Modal, Form, Input, Select, Popconfirm, Space } from 'antd'
 import { PlusOutlined } from '@ant-design/icons'
@@ -88,6 +89,16 @@ export default function Accounts() {
       width: 80,
       render: (_, record) => record.totp_enabled ? <Tag color="green">已启用</Tag> : <Tag>未启用</Tag>,
     },
+    {
+      title: 'LLM 路由',
+      dataIndex: 'llm_routing',
+      width: 120,
+      valueType: 'select',
+      valueEnum: {
+        relay: { text: 'SaaS 中转', status: 'Success' },
+        local: { text: '本地直连', status: 'Default' },
+      },
+    },
     {
       title: '最后登录',
       dataIndex: 'last_login_at',
@@ -161,10 +172,14 @@ export default function Accounts() {
               { value: 'user', label: '用户' },
             ]} />
           </Form.Item>
+          <Form.Item name="llm_routing" label="LLM 路由模式">
+            <Select options={[
+              { value: 'local', label: '本地直连' },
+              { value: 'relay', label: 'SaaS 中转 (Token 池)' },
+            ]} />
+          </Form.Item>
         </Form>
       </Modal>
     </div>
   )
 }
-
-import { useState } from 'react'