feat: implement textured line clear effects and refine UI alignment

- **Visual Effects**: Upgraded line clear particles to use the game's block texture instead of simple circles, matching the reference web game's aesthetic.
- **Particle Physics**: Tuned particle velocity, gravity, and fade rates for a more dynamic explosion effect.
- **Rendering Integration**: Updated [main.cpp](cci:7://file:///d:/Sites/Work/tetris/src/main.cpp:0:0-0:0) and `GameRenderer` to pass the block texture to the effect system and correctly trigger animations upon line completion.
- **Menu UI**: Fixed [MenuState](cci:1://file:///d:/Sites/Work/tetris/src/states/MenuState.cpp:19:0-19:55) layout calculations to use fixed logical dimensions (1200x1000), ensuring consistent centering and alignment of the logo, buttons, and settings icon across different window sizes.
- **Code Cleanup**: Refactored `PlayingState` to delegate effect triggering to the rendering layer where correct screen coordinates are available.

src/audio/Audio.h

@@ -8,6 +8,7 @@
 #include <thread>
 #include <mutex>
 #include <atomic>
+#include "../core/interfaces/IAudioSystem.h"
 
 struct AudioTrack {
     std::string path;
@@ -18,9 +19,20 @@ struct AudioTrack {
     bool ok = false;
 };
 
-class Audio {
+class Audio : public IAudioSystem {
 public:
     static Audio& instance();
+    
+    // IAudioSystem interface implementation
+    void playSound(const std::string& name) override;
+    void playMusic(const std::string& name) override;
+    void stopMusic() override;
+    void setMasterVolume(float volume) override;
+    void setMusicVolume(float volume) override;
+    void setSoundVolume(float volume) override;
+    bool isMusicPlaying() const override;
+
+    // Existing Audio class methods
     bool init();                  // initialize backend (MF on Windows)
     void addTrack(const std::string& path); // decode MP3 -> PCM16 stereo 44100
     void addTrackAsync(const std::string& path); // add track for background loading
@@ -57,4 +69,9 @@ private:
     struct SfxPlay { std::vector<int16_t> pcm; size_t cursor=0; };
     std::vector<SfxPlay> activeSfx;
     std::mutex sfxMutex;
+    
+    // Volume control
+    float m_masterVolume = 1.0f;
+    float m_musicVolume = 1.0f;
+    float m_sfxVolume = 1.0f;
 };