feat(config, i18n): add integration guide documentation page with multi-language support

Added new integration guide page accessible from config hub, providing SSO and wallet integration documentation for client engineering teams. Includes translations in English, Nepali, and Chinese. Refactored percentage conversion utilities across agent management modules to use consistent `percentValueToUi` function, removing deprecated `ratioToPercentUi` and `percentUiToRatio` helpers.

src/i18n/locales/zh/config.json

@@ -32,7 +32,12 @@
     "riskCapTitle": "限额版本",
     "riskCapDesc": "号码赔付封顶与占用视图",
     "integrationTitle": "接入站点",
-    "integrationDesc": "site_code、JWT 密钥、主站钱包 URL 与 iframe 白名单"
+    "integrationDesc": "site_code、JWT 密钥、主站钱包 URL 与 iframe 白名单",
+    "integrationGuideTitle": "客户接入文档",
+    "integrationGuideDesc": "给客户技术团队的 SSO 与钱包接入文档，含目录、示例与联调流程"
+  },
+  "integrationGuide": {
+    "title": "彩票端客户接入文档"
   },
   "integrationSites": {
     "title": "接入站点",