fix: replace raw codes and internal IDs in the console with Chinese labels

Found in v0.2 visual QA (docs/plan/09-visual-qa.md):
- actor strings (admin_session:<uuid>, user:<uuid>, system) -> 管理员/系统/API Key
  in policy revisions, subscriptions, inbox, trash, business tasks, organize detail
- cache volume without key shows the downloader name instead of instance:<uuid>
- download timeline/plan: task and organize statuses, plan purpose, priority and
  status reason localized; audit gets labels for capability/files/site/feed actions
- organize record reason uses conflict detail (没有可入库的主视频) instead of
  blocked:no_main_video; slot/candidate reasons drop inflight:<uuid>
- identity decision summary no longer shows no_viable_candidate
- upstream test: 'Connection error.' classified as network, with a Chinese hint
- new policy draft prefills key default (placeholder looked like a value)
- dialog/sheet close sr-only text in Chinese

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

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

@@ -55,6 +55,7 @@ import {
 import { Input } from "~/components/ui/input.tsx";
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "~/components/ui/select.tsx";
 import { errorMessage } from "~/lib/api.ts";
+import { actorText } from "~/lib/labels.ts";
 import { cn, formatDateTime } from "~/lib/utils.ts";
 import { legacyRedirectLoader } from "./redirects.ts";
 
@@ -317,7 +318,7 @@ function SubscriptionSheet({ sub, onClose }: { sub: Subscription | null; onClose
                     ? `上次 ${formatDateTime(sub.lastSearchedAt)}${sub.nextSearchAt ? ` · 下次 ${formatDateTime(sub.nextSearchAt)}` : " · 周期搜索已关"}`
                     : "尚未搜索",
                 },
-                { label: "创建", value: `${formatDateTime(sub.createdAt)} · ${sub.createdBy ?? "—"}` },
+                { label: "创建", value: `${formatDateTime(sub.createdAt)} · ${actorText(sub.createdBy)}` },
                 { label: "策略版本", value: sub.policyRevisionId ?? "按当前已发布策略", mono: !!sub.policyRevisionId },
               ]}
             />