feat(station-broadcast, cloud-server): 添加HLS播放与循环播放支持，更新脚本拉取地址

调整两个工具脚本的远程拉取地址，将固定commit哈希链接改为main分支链接；为云服务端添加loop参数与HLS音频播放支持，重构音频播放逻辑简化冗余代码；为station_broadcast.lua新增hls格式支持与循环播放控制，完善网络消息参数处理。

CloudServer/server.js

@@ -244,6 +244,7 @@ async function sendAudioBufferToStation(stationName, fallbackWs, task) {
         channels: Number(task.channels || 1),
         audioFormat,
         streamUrl,
+        loop: !!task.loop,
         priority: Number(task.priority || 0),
         interruptMode: task.interruptMode || getInterruptModeForPriority(Number(task.priority || 0)),
         source: task.source || 'unknown'
@@ -2376,6 +2377,11 @@ app.post('/api/music/start', express.json(), (req, res) => {
         stopStationMusic(name, ws);
         stationMusicStates.set(name, { enabled: true, track, loop });
 
+        const streamName = getStationStreamName(name);
+        const hlsUrl = HLS_OUTPUT_MODE === 'local'
+            ? getLocalHlsUrlForRequest(streamName, req)
+            : getStationHlsUrlForRequest(streamName, req);
+
         const enqueueOnce = () => {
             const currentWs = getStationWs(name);
             if (!currentWs || currentWs.readyState !== WebSocket.OPEN) {
@@ -2384,6 +2390,24 @@ app.post('/api/music/start', express.json(), (req, res) => {
                 return;
             }
 
+            if (HLS_ENABLE) {
+                enqueueHlsPush(name, [track]);
+                enqueueStationAudioTask(name, currentWs, {
+                    audioFormat: 'hls',
+                    streamUrl: hlsUrl,
+                    durationSec: playbackAudio.durationSec,
+                    priority: -1,
+                    interruptMode: 'none',
+                    source: 'music',
+                    loop,
+                    audioId: `music-${track}-${name}-${Date.now()}`,
+                    requeueOnPreempt: true,
+                    consoleStreamStart: { type: 'stream_start', station: name, seq: [`MUSIC:${track}`], streamName, hlsUrl },
+                    consoleStreamEnd: { type: 'stream_end', station: name }
+                });
+                return;
+            }
+
             enqueueStationAudioTask(name, currentWs, {
                 audioFormat: playbackAudio.audioFormat,
                 buffer: playbackAudio.buffer,
@@ -2392,23 +2416,11 @@ app.post('/api/music/start', express.json(), (req, res) => {
                 priority: -1,
                 interruptMode: 'none',
                 source: 'music',
+                loop,
                 audioId: `music-${track}-${name}-${Date.now()}`,
                 requeueOnPreempt: true,
-                consoleStreamStart: { type: 'stream_start', station: name, seq: [`MUSIC:${track}`], streamName: getStationStreamName(name), hlsUrl: getStationHlsUrl(getStationStreamName(name)) },
-                consoleStreamEnd: { type: 'stream_end', station: name },
-                onDone: (info) => {
-                    const st = stationMusicStates.get(name);
-                    if (!st || !st.enabled) return;
-                    if (st.track !== track) return;
-                    if (!st.loop) return;
-                    // Only stop if cancelled by something else (like stopMusic or higher priority)
-                    if (info && info.cancelled) {
-                        // If it was just preempted, enqueueStationAudioTask handles the re-insertion
-                        // If it was cancelled by stopStationMusic, st.enabled will be false
-                        return;
-                    }
-                    enqueueOnce();
-                }
+                consoleStreamStart: { type: 'stream_start', station: name, seq: [`MUSIC:${track}`], streamName, hlsUrl },
+                consoleStreamEnd: { type: 'stream_end', station: name }
             });
         };