fix: trigger approaching broadcast under 30 seconds

CloudServer/server.js

@@ -1866,8 +1866,9 @@ function handleTrainApproaching(ws, data) {
     const finalPlatform = cleanPlatform || '1';
     
     const destCode = data.destCode || getStationCodeFromName(data.destination) || 'UNK';
+    const delay = Number(data.delay) || 0; // 获取延误信息（分钟）
 
-    log('INFO', `Train ${trainId} approaching ${stationName}. Broadcasting pre-arrival...`);
+    log('INFO', `Train ${trainId} approaching ${stationName} (Delay: ${delay} min). Broadcasting pre-arrival...`);
 
     ws.send(JSON.stringify({
         type: 'train_approaching_ack',
@@ -1880,11 +1881,21 @@ function handleTrainApproaching(ws, data) {
     // 提示音：ksts
     // 日文：ja-fc1 + ja-站台编号 + ja-fc2 + ja-终点编号 + ja-fc3
     // 中文：ch-fc1 + ch-fc2 + ch-fc3 + ch-终点编号 + ch-fc4
-    const seq = [
-        'ksts',
-        'ja-fc1', `ja-${finalPlatform}`, 'ja-fc2', `ja-${destCode}`, 'ja-fc3',
-        'ch-fc1', 'ch-fc2', 'ch-fc3', `ch-${destCode}`, 'ch-fc4'
-    ];
+    const seq = ['ksts'];
+    
+    // 拼接日文
+    seq.push('ja-fc1', `ja-${finalPlatform}`, 'ja-fc2', `ja-${destCode}`, 'ja-fc3');
+    if (delay > 0) {
+        // TODO: 根据用户的延误音频设计在这里插入日文延误播报
+        // 例如: seq.push('ja-delay-prefix', `ja-${delay}`, 'ja-delay-suffix');
+    }
+
+    // 拼接中文
+    seq.push('ch-fc1', 'ch-fc2', 'ch-fc3', `ch-${destCode}`, 'ch-fc4');
+    if (delay > 0) {
+        // TODO: 根据用户的延误音频设计在这里插入中文延误播报
+        // 例如: seq.push('ch-delay-prefix', `ch-${delay}`, 'ch-delay-suffix');
+    }
     
     enqueueHlsPush(stationName, seq);
     
@@ -1896,8 +1907,8 @@ function handleTrainApproaching(ws, data) {
             sourcePath: built.sourcePath,
             streamUrl: built.streamUrl,
             durationSec: built.durationSec,
-            priority: 1,
-            interruptMode: 'ifLower',
+            priority: 0,
+            interruptMode: 'none',
             source: 'train_approaching',
             audioId,
             consoleStreamStart: { type: 'stream_start', station: stationName, seq, streamName: getStationStreamName(stationName), hlsUrl: getStationHlsUrl(getStationStreamName(stationName)) },