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/labels.ts

@@ -264,3 +264,19 @@ export const opts = <K extends string>(rec: Record<K, string | { label: string }
     const v = rec[value];
     return { value, label: typeof v === "string" ? v : v.label };
   });
+
+/** 版本目标 / 候选的原因串(如 `blocked:no_main_video`、`deferred:slot_busy;inflight:<id>`)→ 中文;不认识的原样显示 */
+const SLOT_REASON: Record<string, string> = {
+  "blocked:no_main_video": "没有可入库的主视频",
+  "deferred:slot_busy": "已有计划在途,等它结束再评估",
+  verified: "已核验入库",
+  verified_partial: "部分核验入库",
+  hard_conditions_met: "硬条件全部满足",
+};
+export function slotReasonText(raw: string): string {
+  return raw
+    .split(";")
+    .filter((p) => !p.startsWith("inflight:"))
+    .map((p) => SLOT_REASON[p] ?? p)
+    .join(";");
+}