Normalize Comment Terminology

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

Util/Audio/Clip/AudioClipStore.cs

@@ -12,7 +12,7 @@ namespace ADOFAIRenderer.Util.Audio.Clip;
 /// - Decoder thread (<see cref="Start"/>): the only thread that decodes, resamples, loads and frees chunks.
 ///   Each step loads one chunk, the one with the lowest priority value over all sources
 ///   (a chunk a consumer waits for, then cursor windows by slot, then resident chunks in order).
-/// - Consumers (render thread, main thread for the spectrum): <see cref="Acquire"/> waits for the decoder thread and never loads.
+/// - Consumers (render thread, main Unity thread for the spectrum): <see cref="Acquire"/> waits for the decoder thread and never loads.
 /// - Main thread: <see cref="GetOrAdd"/> creates readers (for Unity clips this copies the clip data).
 ///
 /// Memory has no limit; current and peak usage are tracked and logged by <see cref="LogMemoryUsage"/>.