feat(media server & broadcast): 新增/media接口并修复广播音频处理问题

- 新增/media GET接口，返回可用的媒体路由信息
- 为音频下载成功添加info日志，显示下载字节数
- 修正扬声器调用结果的条件判断逻辑
- 修复HQ扬声器音频提交失败的日志文案

CloudServer/server.js

@@ -115,6 +115,18 @@ app.get('/media/temp/:file', (req, res) => {
     sendBinaryFile(res, path.join(tempBroadcastDir, name));
 });
 
+app.get('/media', (req, res) => {
+    res.json({
+        success: true,
+        message: 'Use a concrete media path',
+        routes: [
+            '/media/audio/general/:file',
+            '/media/audio/station/:file',
+            '/media/temp/:file'
+        ]
+    });
+});
+
 app.use(express.static(path.join(__dirname, 'public')));
 app.set('view engine', 'ejs');
 

station_broadcast.lua

@@ -708,6 +708,7 @@ local function playHqAudioItem(item)
             Utils.log("ERROR", "Failed to download stream audio: " .. tostring(err))
             return
         end
+        Utils.log("INFO", "Downloaded stream audio: " .. tostring(#bytes) .. " bytes")
         payload = bytes
         if ext == "wav" then format = "wav"
         elseif ext == "mp3" then format = "mp3"
@@ -730,7 +731,7 @@ local function playHqAudioItem(item)
                 return controller.speakFileAll(payload, CONFIG.AUDIO_VOLUME)
             end
         end)
-        if ok and result ~= false then
+        if ok and result then
             called = true
         end
     end
@@ -748,14 +749,14 @@ local function playHqAudioItem(item)
                     return sp.speakFile(payload, CONFIG.AUDIO_VOLUME)
                 end
             end)
-            if ok and result ~= false then
+            if ok and result then
                 called = true
             end
         end
     end
 
     if not called then
-        Utils.log("ERROR", "HQ speaker API not available for format " .. format)
+        Utils.log("ERROR", "HQ speaker did not accept audio for format " .. format)
         return
     end