feat(identity): escalate ambiguous/no_match via site detail-page IDs (ID-3)

Fetch the detail page (cached, rate-limited, per-site hourly cap
identity.detailIdsPerSiteHour) for search results, subscription-related
candidates, pool enrich and manual re-identify; resolve IMDb/TMDB via TMDB,
douban via cached douban subjects (site detail info block / META-2 snippets).
No identity_unresolved decisions for releases with site IDs.

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

apps/web/app/components/settings/metadata.tsx

@@ -207,6 +207,12 @@ const IDENTITY_CARD: CardSpec = {
       hint: "每条新资源都查一次 TMDB。RSS 量大时每天可能上千次请求，站点独有的短剧和综艺多半查不到",
       wide: true,
     },
+    {
+      name: "identity.detailIdsPerSiteHour",
+      label: "识别时每站每小时最多抓详情页",
+      kind: "number",
+      hint: "标题认不准时，抓站点详情页取 IMDb、TMDB 或豆瓣 ID 再识别；只在搜索、订阅相关资源、补全和手动重新识别时抓，RSS 入库不抓。0 = 不抓",
+    },
     {
       name: "identity.autoEnrich",
       label: "TMDB 查不到时自动补全元数据",
@@ -241,6 +247,7 @@ const IDENTITY_CARD: CardSpec = {
     "identity.enrichDailyBudget": n(s.identity.enrichDailyBudget),
     "identity.enrichDomains": s.identity.enrichDomains.join("\n"),
     "identity.enrichSnippetAllSites": s.identity.enrichSnippetAllSites ?? true,
+    "identity.detailIdsPerSiteHour": n(s.identity.detailIdsPerSiteHour ?? 10),
   }),
   toPatch: (v) => ({
     identity: {
@@ -252,6 +259,7 @@ const IDENTITY_CARD: CardSpec = {
         .map((d) => d.trim().toLowerCase())
         .filter(Boolean),
       enrichSnippetAllSites: v["identity.enrichSnippetAllSites"] === true,
+      detailIdsPerSiteHour: Number(v["identity.detailIdsPerSiteHour"]),
     },
   }),
   extra: () => <EnrichStatsTable />,