v0.5.114: add Douyu streamers with fan enrichment and live probe.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/frontend/functions/api/live-status.js

@@ -10,6 +10,8 @@
  * Probe logic is a JS port of fetch_streamer_live.py:
  * - Bilibili: api.live.bilibili.com Room/get_info; data.live_status === 1 is
  *   live (0 offline, 2 replay counts as offline).
+ * - Douyu: www.douyu.com/betard/<room_id>; room.show_status === 1 is live
+ *   (2 offline); room.videoLoop === 1 (carousel) counts as offline.
  * - Douyin: warm up cookies (www.douyin.com + live.douyin.com), then GET
  *   live.douyin.com/<web_rid> with a browser UA and parse the escaped JSON in
  *   the SSR pace chunks: roomStore.roomInfo.room.status (2 live / 4 offline);
@@ -44,6 +46,7 @@ const DOUYIN_HOME = "https://www.douyin.com/";
 const DOUYIN_LIVE_HOME = "https://live.douyin.com/";
 const BILIBILI_INFO_URL =
   "https://api.live.bilibili.com/room/v1/Room/get_info?room_id=";
+const DOUYU_BETARD_URL = "https://www.douyu.com/betard/";
 
 // Escaped JSON inside the SSR pace chunks: \"roomStore\":{\"roomInfo\":{\"room\":{
 const DOUYIN_ROOMSTORE_RE = /\\"roomStore\\":\s*\{\\"roomInfo\\":\s*\{\\"room\\":\s*\{/;
@@ -162,7 +165,25 @@ export async function probeBilibiliRoom(roomId) {
   return data.live_status === 1;
 }
 
-/** First path segment of the live room URL (douyin web_rid / bilibili room id). */
+/** show_status: 1 live, 2 offline; videoLoop carousel counts as offline. */
+export async function probeDouyuRoom(roomId) {
+  const res = await fetchWithTimeout(DOUYU_BETARD_URL + roomId, {
+    headers: {
+      "User-Agent": BROWSER_UA,
+      Accept: "application/json",
+      Referer: "https://www.douyu.com/",
+    },
+  });
+  const payload = await res.json();
+  const room = payload && payload.room;
+  if (!room || typeof room !== "object") {
+    throw new Error("douyu betard returned no room");
+  }
+  if (Number(room.videoLoop || 0) === 1) return false;
+  return Number(room.show_status) === 1;
+}
+
+/** First path segment of the live room URL (douyin/bilibili/douyu room id). */
 export function roomRefFromUrl(liveUrl) {
   let path = "";
   try {
@@ -180,6 +201,7 @@ export function livePlatformFromUrl(liveUrl, fallback = "") {
     const host = new URL(String(liveUrl).trim()).hostname.toLowerCase();
     if (host.includes("bilibili.com")) return "bilibili";
     if (host.includes("douyin.com")) return "douyin";
+    if (host.includes("douyu.com")) return "douyu";
   } catch {
     /* keep fallback */
   }
@@ -245,6 +267,7 @@ async function probeAll(targets) {
           let isLive;
           if (t.platform === "douyin") isLive = await probeDouyinRoom(t.ref, jar);
           else if (t.platform === "bilibili") isLive = await probeBilibiliRoom(t.ref);
+          else if (t.platform === "douyu") isLive = await probeDouyuRoom(t.ref);
           else throw new Error(`unsupported platform ${t.platform}`);
           results.set(t.id, { is_live: isLive });
         } catch (err) {