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/components/library/subscriptions-policy.tsx

@@ -30,6 +30,7 @@ import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "~
 import { Switch } from "~/components/ui/switch.tsx";
 import { Textarea } from "~/components/ui/textarea.tsx";
 import { errorMessage } from "~/lib/api.ts";
+import { actorText } from "~/lib/labels.ts";
 import { cn, formatDateTime } from "~/lib/utils.ts";
 import { CANDIDATE_DECISION, MEDIA_KIND, POLICY_STATUS } from "./labels.ts";
 import { ChipList, ChipToggleGroup, Panel, Tone } from "./parts.tsx";
@@ -80,7 +81,8 @@ function draftFromRevision(r: PolicyRevision | null): PolicyDraft {
   const rules = r ? AcquisitionPolicyRules.safeParse(r.rules).data : undefined;
   const kinds = r ? z.array(z.string()).safeParse((r.scope as { mediaKinds?: unknown }).mediaKinds).data : undefined;
   return {
-    policyKey: r?.policyKey ?? "",
+    // 新草案预填 default:占位符看起来像已填的值,留空提交会报"填写策略键"
+    policyKey: r?.policyKey ?? "default",
     title: r?.title ?? "",
     summary: r?.summary ?? "",
     scopeKinds: kinds ?? [],
@@ -293,7 +295,7 @@ function PolicyGroup({
       }
       description={
         published
-          ? `当前生效 r${published.revision} · ${formatDateTime(published.publishedAt)} 由 ${published.publishedBy ?? "—"} 发布`
+          ? `当前生效 r${published.revision} · ${formatDateTime(published.publishedAt)} 由 ${actorText(published.publishedBy)} 发布`
           : "未发布,不会自动执行"
       }
       actions={
@@ -492,10 +494,12 @@ function PolicyDetailSheet({
               items={[
                 { label: "状态", value: <Tone v={POLICY_STATUS[rev.status]} /> },
                 { label: "作用范围", value: scopeText(rev.scope) },
-                { label: "创建", value: `${formatDateTime(rev.createdAt)} · ${rev.createdBy ?? "—"}` },
+                { label: "创建", value: `${formatDateTime(rev.createdAt)} · ${actorText(rev.createdBy)}` },
                 {
                   label: "发布",
-                  value: rev.publishedAt ? `${formatDateTime(rev.publishedAt)} · ${rev.publishedBy ?? "—"}` : "未发布",
+                  value: rev.publishedAt
+                    ? `${formatDateTime(rev.publishedAt)} · ${actorText(rev.publishedBy)}`
+                    : "未发布",
                 },
                 { label: "说明", value: rev.summary, wide: true },
               ]}