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/slot-card.tsx

@@ -2,7 +2,7 @@ import type { AcquisitionSlot, CandidateEvaluation } from "@umt/contracts";
 import { Link2 } from "lucide-react";
 import type { ReactNode } from "react";
 import { formatDateTime } from "~/lib/utils.ts";
-import { CANDIDATE_DECISION, SLOT_STATUS } from "./labels.ts";
+import { CANDIDATE_DECISION, SLOT_STATUS, slotReasonText } from "./labels.ts";
 import { Chip, ChipList, Tone } from "./parts.tsx";
 import { summarizeCompletion, summarizeHard, summarizeSoft, summarizeUpgrade } from "./slot-rules.tsx";
 
@@ -45,7 +45,9 @@ export function SlotCard({
         <span className="ml-auto text-meta text-muted-foreground tabular-nums">r{slot.revision}</span>
         {actions}
       </header>
-      {slot.statusReason ? <p className="mt-2 text-caption text-muted-foreground">{slot.statusReason}</p> : null}
+      {slot.statusReason ? (
+        <p className="mt-2 text-caption text-muted-foreground">{slotReasonText(slot.statusReason)}</p>
+      ) : null}
       <dl className="mt-3 grid gap-3 text-sm sm:grid-cols-2">
         <div className="min-w-0">
           <dt className="mb-1 text-meta text-muted-foreground">硬条件</dt>
@@ -94,7 +96,9 @@ export function SlotCard({
                   </ul>
                 ) : null}
                 {c.reasons.length ? (
-                  <p className="mt-1 text-meta break-words text-muted-foreground">{c.reasons.join(";")}</p>
+                  <p className="mt-1 text-meta break-words text-muted-foreground">
+                    {c.reasons.map(slotReasonText).filter(Boolean).join(";")}
+                  </p>
                 ) : null}
                 <p className="text-micro text-muted-foreground tabular-nums">评估于 {formatDateTime(c.evaluatedAt)}</p>
               </li>