feat: major engine overhaul - scene demo with lighting, sphere, ground

- Scene Demo: cube + sphere + ground plane with proper lighting
- Audio: XAudio2 dynamic loading + WAV playback
- Physics: expanded collision system
- Renderer: improved pipeline with materials
- UI: extended widget system
- VisualScript: enhanced serializer + block interactions
- ASM: optimized math/memory/profiling routines
- Window: mouse input + scroll support

Engine/Audio/audio.h

@@ -7,17 +7,30 @@
 #include <xaudio2.h>
 #include <stdint.h>
 
+// 播放状态
+typedef enum {
+    AUDIO_STOPPED = 0,
+    AUDIO_PLAYING,
+    AUDIO_PAUSED
+} AudioState;
+
+struct AudioSystem;
+
 // 音频源
 typedef struct {
+    struct AudioSystem* system;
     IXAudio2SourceVoice* source;
     IXAudio2Voice* mastering;
     float volume;
     float pitch;
     int loop;
+    AudioState state;
+    uint8_t* audio_data;
+    uint32_t audio_size;
 } AudioSource;
 
 // 音频管理器
-typedef struct {
+typedef struct AudioSystem {
     IXAudio2* xaudio2;
     IXAudio2MasteringVoice* mastering_voice;
 } AudioSystem;