refactor: use PlayDelayed API for audio delay and add Stop by ID support

- Replace PlayAfterDelay coroutine with AudioSource.PlayDelayed
- Add Stop(audioId) public API
- Add startWithMusic toggle
- Clean up namespace and debug macros

Assets/Scripts/OCES/Audio/HandWritten/LongAudio/ChannelFader.cs

@@ -12,9 +12,9 @@ namespace OCES.Audio
     internal class SyncPointState
     {
         public SyncPoint Mode;
-        public int BaseTimeSamples;        // 读取旧 Source 时的 timeSamples
-        public double BaseDspTime;         // 读取旧 Source 时的 dspTime
-        public int SampleRate;             // 旧 Source 的采样率
+        public int BaseTimeSamples;        // 读取Source Segment 的 timeSamples
+        public double BaseDspTime;         // 读取Source Segment 的 dspTime
+        public int SampleRate;             // Source Segment 的采样率
         public bool Ready;
     }
 
@@ -107,9 +107,9 @@ namespace OCES.Audio
             if (syncState is { Mode: SyncPoint.SameAsCurrentSegment })
             {
                 AudioSource newSource = CurrentHandle?.GetFirstLeafSource();
-                if (newSource != null && newSource.clip != null)
+                if (newSource && newSource.clip)
                 {
-                    // 计算从读取旧 Source 到现在经过的 samples
+                    // 计算从读取Source Segment 到现在经过的 samples
                     double elapsedSeconds = AudioSettings.dspTime - syncState.BaseDspTime;
                     int elapsedSamples = (int)(elapsedSeconds * syncState.SampleRate);
                     int targetTimeSamples = syncState.BaseTimeSamples + elapsedSamples;