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/downloads.tsx

@@ -143,7 +143,7 @@ export default function DownloadsPage() {
         footer={
           open ? (
             <Button asChild variant="outline" size="sm">
-              <Link to={consolePath("downloads", open.id)}>在独立页面打开</Link>
+              <Link to={consolePath("downloads", open.id)}>打开详情页</Link>
             </Button>
           ) : null
         }