feat(sites): structure release detail pages and rework the detail drawer (DETAIL-1)

Adapters (pure functions + tests):
- detail-description: strip HTML/BBCode residue, drop site template blocks and
  ad/signature lines (configurable rules), parse PT info blocks (◎ / 【】 / 『』 /
  「键:」) into infoBlock and body paragraphs
- mediainfo: MediaInfo and BDInfo (quick summary + full report) into a summary
  of container/duration/bitrate/size, video (HDR/DV), audio and subtitle tracks
- file-tree: file list into a flattened directory tree with sizes and
  main/sample/subtitle/extra roles
- formatDetailPage combines them; the server computes it when reading the
  cached detail page, so existing caches benefit without a refetch

Contracts: SiteReleasePage gains infoBlock, paragraphs, media, fileTree.

Web: drawer now reads top-down: meta row (promo/H&R, size, peers, upload time,
IMDb/TMDB/豆瓣 tags) → 资料 → 简介 (collapsible) → 技术规格 (raw folded) →
截图 grid with keyboard lightbox → 文件 tree; inventory overlay moved into the
fixed footer next to 下载.

Fixtures: 6 desensitized samples from the local cache (site.detail and RSS
descriptions) plus synthetic multi-track MediaInfo, BDInfo, bracket blocks and
directory file lists.

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

apps/server/test/sources-identity/detail-page.test.ts

@@ -88,6 +88,14 @@ describe.skipIf(!up)("站点详情页扩展内容:按需抓 + 24 小时缓存 +
     expect(page.mediaInfo).toMatch(/^General\nComplete name : Dune.mkv/);
     expect(page.descriptionText).toContain("◎片名 沙丘2");
     expect(page.descriptionText).not.toContain("Complete name");
+    // 展示结构:读缓存时现算
+    expect(page.infoBlock).toContainEqual({ key: "片名", value: "沙丘2" });
+    expect(page.media).toMatchObject({
+      kind: "mediainfo",
+      general: { fileName: "Dune.mkv", container: "Matroska", size: "78 GiB", duration: "2 h 46 min" },
+      video: [{ codec: "HEVC" }],
+    });
+    expect(Array.isArray(page.fileTree)).toBe(true);
     const row = await h.db
       .selectFrom("source_release")
       .select(["raw"])