style(audio): fix formatting and add missing newlines

- Fix indentation in test files and supervisor code
- Add missing newlines at end of files
- Clean up documentation formatting
- Fix buffer pool pointer return type

internal/audio/adaptive_buffer.go

@@ -18,17 +18,17 @@ import (
 // uses multiple factors to make decisions:
 //
 // 1. System Load Monitoring:
-//    - CPU usage: High CPU load increases buffer sizes to prevent underruns
-//    - Memory usage: High memory pressure reduces buffer sizes to conserve RAM
+//   - CPU usage: High CPU load increases buffer sizes to prevent underruns
+//   - Memory usage: High memory pressure reduces buffer sizes to conserve RAM
 //
 // 2. Latency Tracking:
-//    - Target latency: Optimal latency for the current quality setting
-//    - Max latency: Hard limit beyond which buffers are aggressively reduced
+//   - Target latency: Optimal latency for the current quality setting
+//   - Max latency: Hard limit beyond which buffers are aggressively reduced
 //
 // 3. Adaptation Strategy:
-//    - Exponential smoothing: Prevents oscillation and provides stable adjustments
-//    - Discrete steps: Buffer sizes change in fixed increments to avoid instability
-//    - Hysteresis: Different thresholds for increasing vs decreasing buffer sizes
+//   - Exponential smoothing: Prevents oscillation and provides stable adjustments
+//   - Discrete steps: Buffer sizes change in fixed increments to avoid instability
+//   - Hysteresis: Different thresholds for increasing vs decreasing buffer sizes
 //
 // The algorithm is specifically tuned for embedded ARM systems with limited resources,
 // prioritizing stability over absolute minimum latency.
@@ -182,20 +182,23 @@ func (abm *AdaptiveBufferManager) adaptationLoop() {
 //
 // Mathematical Model:
 // 1. Factor Calculation:
-//    - CPU Factor: Sigmoid function that increases buffer size under high CPU load
-//    - Memory Factor: Inverse relationship that decreases buffer size under memory pressure
-//    - Latency Factor: Exponential decay that aggressively reduces buffers when latency exceeds targets
 //
-// 2. Combined Factor:
-//    Combined = (CPU_factor * Memory_factor * Latency_factor)
-//    This multiplicative approach ensures any single critical factor can override others
+//   - CPU Factor: Sigmoid function that increases buffer size under high CPU load
 //
-// 3. Exponential Smoothing:
-//    New_size = Current_size + smoothing_factor * (Target_size - Current_size)
-//    This prevents rapid oscillations and provides stable convergence
+//   - Memory Factor: Inverse relationship that decreases buffer size under memory pressure
 //
-// 4. Discrete Quantization:
-//    Final sizes are rounded to frame boundaries and clamped to configured limits
+//   - Latency Factor: Exponential decay that aggressively reduces buffers when latency exceeds targets
+//
+//     2. Combined Factor:
+//     Combined = (CPU_factor * Memory_factor * Latency_factor)
+//     This multiplicative approach ensures any single critical factor can override others
+//
+//     3. Exponential Smoothing:
+//     New_size = Current_size + smoothing_factor * (Target_size - Current_size)
+//     This prevents rapid oscillations and provides stable convergence
+//
+//     4. Discrete Quantization:
+//     Final sizes are rounded to frame boundaries and clamped to configured limits
 //
 // The algorithm runs periodically and only applies changes when the adaptation interval
 // has elapsed, preventing excessive adjustments that could destabilize the audio pipeline.

internal/audio/buffer_pool.go

@@ -40,7 +40,8 @@ func NewAudioBufferPool(bufferSize int) *AudioBufferPool {
 		preallocSize: preallocSize,
 		pool: sync.Pool{
 			New: func() interface{} {
-				return make([]byte, 0, bufferSize)
+				buf := make([]byte, 0, bufferSize)
+				return &buf
 			},
 		},
 	}

internal/audio/naming_standards.go

@@ -78,8 +78,8 @@ const (
 	AudioOutputIPCComponent        = "audio-output-ipc"
 
 	// Common component names
-	AudioRelayComponent  = "audio-relay"
-	AudioEventsComponent = "audio-events"
+	AudioRelayComponent   = "audio-relay"
+	AudioEventsComponent  = "audio-events"
 	AudioMetricsComponent = "audio-metrics"
 )
 

internal/audio/supervisor.go

@@ -52,9 +52,9 @@ type AudioOutputSupervisor struct {
 	lastExitTime    time.Time
 
 	// Channels for coordination
-	processDone chan struct{}
-	stopChan    chan struct{}
-	stopChanClosed bool // Track if stopChan is closed
+	processDone       chan struct{}
+	stopChan          chan struct{}
+	stopChanClosed    bool // Track if stopChan is closed
 	processDoneClosed bool // Track if processDone is closed
 
 	// Process monitoring
@@ -107,7 +107,7 @@ func (s *AudioOutputSupervisor) Start() error {
 	s.mutex.Lock()
 	s.processDone = make(chan struct{})
 	s.stopChan = make(chan struct{})
-	s.stopChanClosed = false // Reset channel closed flag
+	s.stopChanClosed = false    // Reset channel closed flag
 	s.processDoneClosed = false // Reset channel closed flag
 	// Recreate context as well since it might have been cancelled
 	s.ctx, s.cancel = context.WithCancel(context.Background())

internal/audio/supervisor_unit_test.go

@@ -109,9 +109,9 @@ func TestAudioOutputSupervisorConcurrentOperations(t *testing.T) {
 	for i := 0; i < 5; i++ {
 		wg.Add(1)
 		go func() {
-				defer wg.Done()
-				_ = supervisor.GetProcessMetrics()
-			}()
+			defer wg.Done()
+			_ = supervisor.GetProcessMetrics()
+		}()
 	}
 
 	// Test concurrent status checks

internal/audio/validation_enhanced.go

@@ -11,25 +11,25 @@ import (
 
 // Enhanced validation errors with more specific context
 var (
-	ErrInvalidFrameLength     = errors.New("invalid frame length")
-	ErrFrameDataCorrupted     = errors.New("frame data appears corrupted")
-	ErrBufferAlignment        = errors.New("buffer alignment invalid")
-	ErrInvalidSampleFormat    = errors.New("invalid sample format")
-	ErrInvalidTimestamp       = errors.New("invalid timestamp")
-	ErrConfigurationMismatch  = errors.New("configuration mismatch")
-	ErrResourceExhaustion     = errors.New("resource exhaustion detected")
-	ErrInvalidPointer         = errors.New("invalid pointer")
-	ErrBufferOverflow         = errors.New("buffer overflow detected")
-	ErrInvalidState           = errors.New("invalid state")
+	ErrInvalidFrameLength    = errors.New("invalid frame length")
+	ErrFrameDataCorrupted    = errors.New("frame data appears corrupted")
+	ErrBufferAlignment       = errors.New("buffer alignment invalid")
+	ErrInvalidSampleFormat   = errors.New("invalid sample format")
+	ErrInvalidTimestamp      = errors.New("invalid timestamp")
+	ErrConfigurationMismatch = errors.New("configuration mismatch")
+	ErrResourceExhaustion    = errors.New("resource exhaustion detected")
+	ErrInvalidPointer        = errors.New("invalid pointer")
+	ErrBufferOverflow        = errors.New("buffer overflow detected")
+	ErrInvalidState          = errors.New("invalid state")
 )
 
 // ValidationLevel defines the level of validation to perform
 type ValidationLevel int
 
 const (
-	ValidationMinimal ValidationLevel = iota // Only critical safety checks
-	ValidationStandard                       // Standard validation for production
-	ValidationStrict                         // Comprehensive validation for debugging
+	ValidationMinimal  ValidationLevel = iota // Only critical safety checks
+	ValidationStandard                        // Standard validation for production
+	ValidationStrict                          // Comprehensive validation for debugging
 )
 
 // ValidationConfig controls validation behavior
@@ -47,7 +47,7 @@ func GetValidationConfig() ValidationConfig {
 		Level:                ValidationStandard,
 		EnableRangeChecks:    true,
 		EnableAlignmentCheck: true,
-		EnableDataIntegrity:  false, // Disabled by default for performance
+		EnableDataIntegrity:  false,           // Disabled by default for performance
 		MaxValidationTime:    5 * time.Second, // Default validation timeout
 	}
 }
@@ -254,9 +254,10 @@ func validateAudioDataIntegrity(data []byte, channels int) error {
 
 	for i := 0; i < len(data); i += 2 {
 		sample := int16(data[i]) | int16(data[i+1])<<8
-		if sample == 0 {
+		switch sample {
+		case 0:
 			zeroCount++
-		} else if sample == 32767 || sample == -32768 {
+		case 32767, -32768:
 			maxCount++
 		}
 	}

internal/audio/zero_copy.go

@@ -13,25 +13,27 @@ import (
 // allocations and memory copying in the audio pipeline:
 //
 // Key Features:
-// 1. Reference Counting: Multiple components can safely share the same frame data
-//    without copying. The frame is automatically returned to the pool when the last
-//    reference is released.
 //
-// 2. Thread Safety: All operations are protected by RWMutex, allowing concurrent
-//    reads while ensuring exclusive access for modifications.
+//  1. Reference Counting: Multiple components can safely share the same frame data
+//     without copying. The frame is automatically returned to the pool when the last
+//     reference is released.
 //
-// 3. Pool Integration: Frames are automatically managed by ZeroCopyFramePool,
-//    enabling efficient reuse and preventing memory fragmentation.
+//  2. Thread Safety: All operations are protected by RWMutex, allowing concurrent
+//     reads while ensuring exclusive access for modifications.
 //
-// 4. Unsafe Pointer Access: For performance-critical CGO operations, direct
-//    memory access is provided while maintaining safety through reference counting.
+//  3. Pool Integration: Frames are automatically managed by ZeroCopyFramePool,
+//     enabling efficient reuse and preventing memory fragmentation.
+//
+//  4. Unsafe Pointer Access: For performance-critical CGO operations, direct
+//     memory access is provided while maintaining safety through reference counting.
 //
 // Usage Pattern:
-//   frame := pool.Get()        // Acquire frame (refCount = 1)
-//   frame.AddRef()             // Share with another component (refCount = 2)
-//   data := frame.Data()       // Access data safely
-//   frame.Release()            // Release reference (refCount = 1)
-//   frame.Release()            // Final release, returns to pool (refCount = 0)
+//
+//	frame := pool.Get()        // Acquire frame (refCount = 1)
+//	frame.AddRef()             // Share with another component (refCount = 2)
+//	data := frame.Data()       // Access data safely
+//	frame.Release()            // Release reference (refCount = 1)
+//	frame.Release()            // Final release, returns to pool (refCount = 0)
 //
 // Memory Safety:
 // - Frames cannot be modified while shared (refCount > 1)
@@ -52,19 +54,22 @@ type ZeroCopyAudioFrame struct {
 // real-time audio processing with minimal allocation overhead:
 //
 // Tier 1 - Pre-allocated Frames:
-//   A small number of frames are pre-allocated at startup and kept ready
-//   for immediate use. This provides the fastest possible allocation for
-//   the most common case and eliminates allocation latency spikes.
+//
+//	A small number of frames are pre-allocated at startup and kept ready
+//	for immediate use. This provides the fastest possible allocation for
+//	the most common case and eliminates allocation latency spikes.
 //
 // Tier 2 - sync.Pool Cache:
-//   The standard Go sync.Pool provides efficient reuse of frames with
-//   automatic garbage collection integration. Frames are automatically
-//   returned here when memory pressure is low.
+//
+//	The standard Go sync.Pool provides efficient reuse of frames with
+//	automatic garbage collection integration. Frames are automatically
+//	returned here when memory pressure is low.
 //
 // Tier 3 - Memory Guard:
-//   A configurable limit prevents excessive memory usage by limiting
-//   the total number of allocated frames. When the limit is reached,
-//   allocation requests are denied to prevent OOM conditions.
+//
+//	A configurable limit prevents excessive memory usage by limiting
+//	the total number of allocated frames. When the limit is reached,
+//	allocation requests are denied to prevent OOM conditions.
 //
 // Performance Characteristics:
 // - Pre-allocated tier: ~10ns allocation time