refactor: parseMetadata复用parseDetailPage统一解析，消除重复的豆瓣链接提取逻辑

docs/nexusphp-default.groovy

@@ -35,24 +35,14 @@ Map parseMetadata(context) {
     def searchItems = parseSearchPage(Jsoup.parse(searchResp.content)).items
     if (!searchItems || searchItems.isEmpty()) return [matched: false, message: '未搜到']
 
-    // 2. 取第一个结果 → 访问详情
+    // 2. 取第一个结果 → 访问详情（复用 parseDetailPage 统一解析）
     def first = searchItems[0]
     def detailResp = context.fetch("detail", [id: first.detailUrl])
     if (detailResp.status != 200) return [matched: false, message: '详情页访问失败']
+    def detail = parseDetailPage(Jsoup.parse(detailResp.content))
 
-    // 3. 提取豆瓣链接
-    def detailDoc = Jsoup.parse(detailResp.content)
-    def dbLink = detailDoc.selectFirst('a[href*=movie.douban.com], a[href*=douban.com/subject]')?.attr('href')
-    // 也尝试种子的描述区域
-    if (!dbLink) dbLink = detailDoc.selectFirst('.rowhead:contains(简介) + td a[href*=douban], #kdescr a[href*=douban]')?.attr('href')
-    if (!dbLink) {
-        // 从页面文本中正则提取
-        def m = detailResp.content =~ /https?:\/\/(?:movie|www)\.douban\.com\/subject\/(\d+)\/?/
-        if (m) dbLink = m[0][0]
-    }
-
-    return dbLink
-        ? [matched: true, doubanUrl: dbLink, title: first.title, seedTitle: first.title]
+    return detail.doubanUrl
+        ? [matched: true, doubanUrl: detail.doubanUrl, title: first.title, seedTitle: first.title]
         : [matched: false, message: '未找到豆瓣链接', seedTitle: first.title]
 }