copy: second-round copy review across console, settings, agent and server messages

- Trim descriptions, empty states, confirm buttons and toasts to facts
- Unify terms per glossary: 待处理/待识别/整理记录/运行记录/凭证/子会话/Agent 上游
- Subscription-login termsNote states facts only (borrowed client identity, ToS/ban risk)
- Shorter, concrete goal templates for built-in Agent checks
- Human-readable nouns instead of table names in instance CRUD errors
- Audit labels for pi_upstream / schedule / automation_grant actions
- Glossary: add 上游、订阅登录、凭证、定时任务、巡检、运行记录、子会话、停止、持续授权

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/web/app/routes/console/settings.tsx

@@ -43,7 +43,7 @@ export default function SettingsPage() {
 
   return (
     <>
-      <PageHeader title="设置" description="全局参数、接入的实例与凭证。凭证只写入,保存后不回显。" />
+      <PageHeader title="设置" description="全局参数、实例与凭证。凭证保存后不回显。" />
       <div className="grid gap-6 lg:grid-cols-[13.5rem_minmax(0,1fr)] lg:gap-8">
         {/* 窄屏:顶部下拉 */}
         <div className="lg:hidden">