feat(pugongying): 支持小红书短链接输入

通过 GM_xmlhttpRequest HEAD 请求跟踪短链接重定向，
从 finalUrl 中提取达人 ID。支持 xhslink.com 域名。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pugongying/xhs-pgy-export.user.js

@@ -6,6 +6,7 @@
 // @match        https://pgy.xiaohongshu.com/*
 // @grant        GM_xmlhttpRequest
 // @connect      api.internal.intelligrow.cn
+// @connect      xhslink.com
 // @require      https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx.full.min.js
 // ==/UserScript==
 
@@ -235,27 +236,28 @@
     return baseTarget;
   }
 
-  function extractBloggerId(value) {
-    const raw = normalizeScalar(value);
-    if (!raw) {
-      return "";
-    }
+  function resolveShortUrl(url) {
+    return new Promise((resolve) => {
+      if (typeof GM_xmlhttpRequest !== "function") {
+        resolve(url);
+        return;
+      }
+      GM_xmlhttpRequest({
+        method: "HEAD",
+        url,
+        onload(res) {
+          resolve(res.finalUrl || url);
+        },
+        onerror() {
+          resolve(url);
+        },
+      });
+    });
+  }
 
-    if (/^[0-9a-f]{24}$/i.test(raw)) {
-      return raw;
-    }
-
-    if (!/^https?:\/\//i.test(raw)) {
-      return "";
-    }
-
-    let parsedUrl;
-    try {
-      parsedUrl = new URL(raw);
-    } catch (error) {
-      return "";
-    }
+  const SHORT_LINK_HOSTS = ["xhslink.com"];
 
+  function extractIdFromUrl(parsedUrl) {
     const queryCandidates = ["id", "user_id", "userId", "bloggerId", "creatorId"];
     for (const key of queryCandidates) {
       const queryValue = parsedUrl.searchParams.get(key);
@@ -279,7 +281,45 @@
     return "";
   }
 
-  function parseCreatorInputs(rawInput) {
+  async function extractBloggerId(value) {
+    const raw = normalizeScalar(value);
+    if (!raw) {
+      return "";
+    }
+
+    if (/^[0-9a-f]{24}$/i.test(raw)) {
+      return raw;
+    }
+
+    if (!/^https?:\/\//i.test(raw)) {
+      return "";
+    }
+
+    let parsedUrl;
+    try {
+      parsedUrl = new URL(raw);
+    } catch (error) {
+      return "";
+    }
+
+    const directId = extractIdFromUrl(parsedUrl);
+    if (directId) {
+      return directId;
+    }
+
+    if (SHORT_LINK_HOSTS.some((h) => parsedUrl.hostname.endsWith(h))) {
+      const realUrl = await resolveShortUrl(raw);
+      try {
+        return extractIdFromUrl(new URL(realUrl));
+      } catch (error) {
+        return "";
+      }
+    }
+
+    return "";
+  }
+
+  async function parseCreatorInputs(rawInput) {
     const values = normalizeScalar(rawInput)
       .split(/[\n,，\s]+/)
       .map((item) => item.trim())
@@ -288,8 +328,8 @@
     const ids = [];
     const seen = new Set();
 
-    for (const value of values) {
-      const id = extractBloggerId(value);
+    const resolved = await Promise.all(values.map((v) => extractBloggerId(v)));
+    for (const id of resolved) {
       if (!id || seen.has(id)) {
         continue;
       }
@@ -508,7 +548,7 @@
 
     return {
       async preview(rawInput, onProgress) {
-        const ids = parseCreatorInputs(rawInput);
+        const ids = await parseCreatorInputs(rawInput);
         if (!ids.length) {
           throw new Error("请输入至少一个有效的达人主页链接或达人 ID。");
         }