Performance optimizations: sound caching, renderer culling, entity and lighting improvements

- Sound engine: cache filesystem probe results to avoid repeated file existence checks; add MA_SOUND_FLAG_DECODE for pre-decoded playback
- Level renderer: column-level frustum culling, compact visible chunk lists to skip empty iteration, lightweight second-pass render path, early-out for non-dirty chunks, scaled recheck period at high render distances
- Entity: cache shared_from_this() to reduce reference counting overhead in move() and checkInsideTiles()
- Level: skip checkLight() when tile light properties unchanged; enable entity locking on all platforms (not just Vita)
- LevelChunk: only rescan min height when the minimum column changes; defer lightGap processing
- LivingEntity: use raw pointer cast instead of dynamic_pointer_cast; cache friction tile lookup
- ServerPlayerGameMode: return whether block was destroyed to avoid redundant tile update packets

Minecraft.Client/LevelRenderer.h

@@ -83,6 +83,7 @@ private:
 	void resortChunks(int xc, int yc, int zc);
 public:
 	int render(shared_ptr<LivingEntity> player, int layer, double alpha, bool updateChunks);
+	void renderChunksDirect(int layer, double alpha);
 private:
 	int renderChunks(int from, int to, int layer, double alpha);
 public:
@@ -270,6 +271,12 @@ public:
 
 	XLockFreeStack<int> dirtyChunksLockFreeStack;
 
+	// Visible chunk lists built by cull(), consumed by renderChunks()
+	int *visibleLists_layer0;
+	int *visibleLists_layer1;
+	int visibleCount_layer0;
+	int visibleCount_layer1;
+
 	bool				dirtyChunkPresent;
 	int64_t				lastDirtyChunkFound;
 	static const int	FORCE_DIRTY_CHUNK_CHECK_PERIOD_MS = 125; // decreased from 250 to 125 - updated by detectiveren