✨ refactor: convert all DanceLessonsCoach mentions to kebab-case

pkg/config/config.go

@@ -97,7 +97,7 @@ type VersionInfo struct {
 // VersionCommand handles version display
 func (c *Config) VersionCommand() string {
 	// This will be enhanced when we integrate with cobra
-	return fmt.Sprintf("DanceLessonsCoach %s (commit: %s, built: %s, go: %s)",
+	return fmt.Sprintf("dance-lessons-coach %s (commit: %s, built: %s, go: %s)",
 		version.Version, version.Commit, version.Date, version.GoVersion)
 }
 
@@ -128,7 +128,7 @@ func LoadConfig() (*Config, error) {
 	// Telemetry defaults
 	v.SetDefault("telemetry.enabled", false)
 	v.SetDefault("telemetry.otlp_endpoint", "localhost:4317")
-	v.SetDefault("telemetry.service_name", "DanceLessonsCoach")
+	v.SetDefault("telemetry.service_name", "dance-lessons-coach")
 	v.SetDefault("telemetry.insecure", true)
 	v.SetDefault("telemetry.sampler.type", "parentbased_always_on")
 	v.SetDefault("telemetry.sampler.ratio", 1.0)
@@ -165,7 +165,7 @@ func LoadConfig() (*Config, error) {
 
 	// Bind environment variables
 	v.AutomaticEnv()
-	v.SetEnvPrefix("DLC") // DanceLessonsCoach prefix
+	v.SetEnvPrefix("DLC") // dance-lessons-coach prefix
 	v.BindEnv("server.host", "DLC_SERVER_HOST")
 	v.BindEnv("server.port", "DLC_SERVER_PORT")
 	v.BindEnv("shutdown.timeout", "DLC_SHUTDOWN_TIMEOUT")