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]>

packages/adapters/src/sites/detail-format.ts

@@ -0,0 +1,33 @@
+/**
+ * 详情页扩展内容的展示结构(DETAIL-1):简介 → 信息块 + 段落,MediaInfo / BDInfo → 技术规格概要,文件清单 → 目录树。
+ * 纯函数;服务端读缓存时现算(旧缓存也能用),原文(descriptionText / mediaInfo / files)照旧保留。
+ */
+import {
+  DEFAULT_DESCRIPTION_RULES,
+  type DescriptionRules,
+  type DetailInfoItem,
+  structureDescription,
+} from "./detail-description.ts";
+import { buildFileTree, type FileTreeRow } from "./file-tree.ts";
+import { type MediaSummary, parseMediaSummary } from "./mediainfo.ts";
+import type { SiteDetailPage } from "./types.ts";
+
+export interface FormattedDetailPage {
+  infoBlock: DetailInfoItem[];
+  paragraphs: string[];
+  media: MediaSummary | null;
+  fileTree: FileTreeRow[];
+}
+
+export function formatDetailPage(
+  page: Pick<SiteDetailPage, "descriptionText" | "mediaInfo" | "files">,
+  rules: DescriptionRules = DEFAULT_DESCRIPTION_RULES,
+): FormattedDetailPage {
+  const { infoBlock, paragraphs } = structureDescription(page.descriptionText, rules);
+  return {
+    infoBlock,
+    paragraphs,
+    media: parseMediaSummary(page.mediaInfo),
+    fileTree: buildFileTree(page.files ?? []),
+  };
+}