feat(下载对话框): 学 MoviePilot 重做手动下载对话框

- 标题区:海报、作品名 (年份)、站点;资源行显示原始标题、促销、H&R、做种 / 下载、大小、发布时间
- 下载器与保存目录并排下拉,缺省「自动」,下方写明「将保存到」的实际路径;保留「自定义路径」
- 作品身份折叠区:类型 + TMDB 编号(可搜索作品),未识别时默认展开,指定后随下载绑定
- 已有版本先显示一行摘要,选一次性洗版才展开勾选列表
- 搜索、工作台、原站视图三处调用方补传资源字段

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Cxwgnn2pbzQ7rXv3rq7fei

apps/web/app/components/workbench/download-dialog.tsx

@@ -1,7 +1,28 @@
 import type { AcquisitionSlot, WorkbenchRelease } from "@umt/contracts";
 import { useSubmitRelease } from "~/api/releases.ts";
 import { openAgentDrawer } from "~/components/agent/agent-store.ts";
-import { ManualDownloadDialog } from "~/components/downloads/manual-download-dialog.tsx";
+import { ManualDownloadDialog, type ManualDownloadResource } from "~/components/downloads/manual-download-dialog.tsx";
+import { kindHintOf } from "~/components/downloads/manual-download-model.ts";
+import { hrOf, promotionLabel } from "./release-fields.ts";
+
+/** 站点资源 → 下载对话框的资源摘要(工作台与原站视图共用);过期的促销不显示 */
+export function workbenchResource(r: WorkbenchRelease): ManualDownloadResource {
+  const promo = promotionLabel(r);
+  return {
+    title: r.title,
+    subtitle: r.subtitle,
+    sizeBytes: r.sizeBytes,
+    entityId: r.entity?.id,
+    entity: r.entity,
+    siteId: r.siteId,
+    seeders: r.seeders,
+    leechers: r.leechers,
+    promotion: promo && !promo.expired ? { label: promo.label, free: promo.free } : null,
+    hr: hrOf(r),
+    publishedAt: r.sourcePublishedAt,
+    kindHint: kindHintOf(r.parsed),
+  };
+}
 
 /** 工作台使用独立手动下载，不要求先建立订阅或收录版本。 */
 export function DownloadDialog({
@@ -20,7 +41,7 @@ export function DownloadDialog({
       key={release.id}
       open={open}
       onOpenChange={onOpenChange}
-      resource={{ title: release.title, sizeBytes: release.sizeBytes, entityId: release.entity?.id }}
+      resource={workbenchResource(release)}
       onDelegate={() =>
         openAgentDrawer({
           label: `资源：${release.title}`,