style: replace interface{} with any per golangci-lint rules

backend/internal/service/setting_service.go

@@ -112,7 +112,7 @@ func (s *SettingService) SetVersion(version string) {
 
 // GetPublicSettingsForInjection returns public settings in a format suitable for HTML injection
 // This implements the web.PublicSettingsProvider interface
-func (s *SettingService) GetPublicSettingsForInjection(ctx context.Context) (interface{}, error) {
+func (s *SettingService) GetPublicSettingsForInjection(ctx context.Context) (any, error) {
 	settings, err := s.GetPublicSettings(ctx)
 	if err != nil {
 		return nil, err

backend/internal/web/embed_off.go

@@ -14,7 +14,7 @@ import (
 // PublicSettingsProvider is an interface to fetch public settings
 // This stub is needed for compilation when frontend is not embedded
 type PublicSettingsProvider interface {
-	GetPublicSettingsForInjection(ctx context.Context) (interface{}, error)
+	GetPublicSettingsForInjection(ctx context.Context) (any, error)
 }
 
 // FrontendServer is a stub for non-embed builds

backend/internal/web/embed_on.go

@@ -21,7 +21,7 @@ var frontendFS embed.FS
 
 // PublicSettingsProvider is an interface to fetch public settings
 type PublicSettingsProvider interface {
-	GetPublicSettingsForInjection(ctx context.Context) (interface{}, error)
+	GetPublicSettingsForInjection(ctx context.Context) (any, error)
 }
 
 // FrontendServer serves the embedded frontend with settings injection