优化建议模式；修复多索引训练失败问题 (#1043)

* doc

* Optimize possible null Pointers and parts of Ux

* fix: mulity index training error

projects/app/public/locales/en/common.json

@@ -1334,6 +1334,7 @@
       "Not sufficient": "Your AI points are insufficient, please upgrade the package or purchase additional AI points before continuing to use.",
       "Pay error": "Pay error",
       "Pay success": "Pay success",
+      "Plan expired time": "Plan expired time",
       "Standard Plan Detail": "Standard Plan Detail",
       "To read plan": "Read plan",
       "bill": {

projects/app/public/locales/zh/common.json

@@ -1336,6 +1336,7 @@
       "Not sufficient": "您的 AI 积分不足，请先升级套餐或购买额外 AI 积分后继续使用。",
       "Pay error": "支付失败",
       "Pay success": "支付成功",
+      "Plan expired time": "套餐到期时间",
       "Standard Plan Detail": "套餐详情",
       "To read plan": "查看套餐",
       "bill": {