rename AudioPacketMetadata to BinaryPacketHeader

Sources/Output/Handlers/BinaryOutputHandler.swift

@@ -6,7 +6,7 @@ public class BinaryAudioOutputHandler: AudioOutputHandler {
 
   public func handleAudioPacket(_ packet: AudioPacket) {
     // Create metadata without the audio data
-    let metadata = AudioPacketMetadata(from: packet)
+    let metadata = BinaryPacketHeader(from: packet)
 
     // Write JSON metadata line
     Logger.writeMessage(.audio, data: metadata)

Sources/Output/OutputPacketTypes.swift

@@ -23,7 +23,7 @@ public struct JSONAudioPacket: Codable {
 }
 
 /// Metadata-only packet for binary output (without base64 audio data)
-public struct AudioPacketMetadata: Codable {
+public struct BinaryPacketHeader: Codable {
   public let timestamp: Date
   public let duration: Double
   public let peakAmplitude: Float