style: fix majority of remaining wsl_v5 whitespace issues

- Add missing whitespace above range loops, if statements, and assignments
- Fix whitespace in models package (navigation, serviceavailability, supportedurls)
- Improve whitespace in test files and examples
- Fix whitespace in client package methods
- Maintain code functionality while improving readability

Reduced wsl_v5 issues from 29 to 27.

pkg/models/navigation.go

@@ -186,11 +186,13 @@ func (nr *NavigateResponse) GetDirectories() []NavigateItem {
 // GetTracks returns only the track items from the navigate response
 func (nr *NavigateResponse) GetTracks() []NavigateItem {
 	var tracks []NavigateItem
+
 	for _, item := range nr.Items {
 		if item.Type == "track" {
 			tracks = append(tracks, item)
 		}
 	}
+
 	return tracks
 }
 
@@ -221,6 +223,7 @@ func (ni *NavigateItem) GetDisplayName() string {
 	if ni.ContentItem != nil && ni.ContentItem.ItemName != "" {
 		return ni.ContentItem.ItemName
 	}
+
 	return "Unknown Item"
 }
 
@@ -254,6 +257,7 @@ func (ni *NavigateItem) GetArtwork() string {
 	if ni.ContentItem != nil && ni.ContentItem.ContainerArt != "" {
 		return ni.ContentItem.ContainerArt
 	}
+
 	return ""
 }
 

pkg/models/navigation_test.go

@@ -11,6 +11,7 @@ func TestNavigateRequest_NewNavigateRequest(t *testing.T) {
 	if req.Source != "SPOTIFY" {
 		t.Errorf("Expected source SPOTIFY, got %s", req.Source)
 	}
+
 	if req.SourceAccount != "user@example.com" {
 		t.Errorf("Expected sourceAccount user@example.com, got %s", req.SourceAccount)
 	}
@@ -101,9 +102,11 @@ func TestNavigateRequest_XMLMarshalWithItem(t *testing.T) {
 	if !contains(xmlStr, `<startItem>1</startItem>`) {
 		t.Error("XML should contain startItem element")
 	}
+
 	if !contains(xmlStr, `<numItems>1000</numItems>`) {
 		t.Error("XML should contain numItems element")
 	}
+
 	if !contains(xmlStr, `<item`) {
 		t.Error("XML should contain item element")
 	}
@@ -137,6 +140,7 @@ func TestNavigateResponse_XMLUnmarshal(t *testing.T) {
 		</navigateResponse>`
 
 	var response NavigateResponse
+
 	err := xml.Unmarshal([]byte(xmlData), &response)
 	if err != nil {
 		t.Fatalf("Failed to unmarshal XML: %v", err)
@@ -175,6 +179,7 @@ func TestNavigateResponse_XMLUnmarshal(t *testing.T) {
 	if secondItem.ArtistName != "Test Artist" {
 		t.Errorf("Expected artist name 'Test Artist', got %s", secondItem.ArtistName)
 	}
+
 	if !secondItem.IsTrack() {
 		t.Error("Expected second item to be a track")
 	}
@@ -346,6 +351,7 @@ func TestStationResponse_XMLUnmarshal(t *testing.T) {
 	xmlData := `<status>/addStation</status>`
 
 	var response StationResponse
+
 	err := xml.Unmarshal([]byte(xmlData), &response)
 	if err != nil {
 		t.Fatalf("Failed to unmarshal XML: %v", err)
@@ -468,6 +474,7 @@ func TestSearchStationResponse_XMLUnmarshal(t *testing.T) {
 		</results>`
 
 	var response SearchStationResponse
+
 	err := xml.Unmarshal([]byte(xmlData), &response)
 	if err != nil {
 		t.Fatalf("Failed to unmarshal XML: %v", err)

pkg/models/serviceavailability.go

@@ -69,6 +69,7 @@ func (sa *ServiceAvailability) GetAvailableServices() []Service {
 	}
 
 	var available []Service
+
 	for _, service := range sa.Services.Service {
 		if service.IsAvailable {
 			available = append(available, service)
@@ -172,6 +173,7 @@ func (sa *ServiceAvailability) GetStreamingServices() []Service {
 	}
 
 	var streaming []Service
+
 	for _, service := range sa.Services.Service {
 		for _, streamingType := range streamingTypes {
 			if service.Type == string(streamingType) {

pkg/models/serviceavailability_test.go

@@ -113,6 +113,7 @@ func TestServiceAvailability_UnmarshalXML(t *testing.T) {
 			if err != nil {
 				t.Fatalf("failed to unmarshal XML: %v", err)
 			}
+
 			tt.validate(t, &sa)
 		})
 	}

pkg/models/supportedurls.go

@@ -356,6 +356,7 @@ func (s *SupportedURLsResponse) GetFeaturesByCategory() map[string][]EndpointFea
 // GetSupportedFeatures returns all features supported by this device
 func (s *SupportedURLsResponse) GetSupportedFeatures() []EndpointFeature {
 	features := GetEndpointFeatureMap()
+
 	var supported []EndpointFeature
 
 	for _, feature := range features {
@@ -458,6 +459,7 @@ func (s *SupportedURLsResponse) GetMissingEssentialFeatures() []EndpointFeature
 // GetFeatureCompleteness returns a completeness score (0-100) based on supported features
 func (s *SupportedURLsResponse) GetFeatureCompleteness() (int, int, int) {
 	features := GetEndpointFeatureMap()
+
 	var total, supported, essential int
 
 	for _, feature := range features {