📝 docs: add ADR for staged-only Git hooks formatting

- Add ADR-0012 documenting the decision to format only staged Go files
- Update ADR README.md with new entry
- Document rationale, alternatives, and verification results
- Include future considerations for monitoring and CI/CD integration

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

pkg/config/config.go

@@ -33,9 +33,9 @@ type ShutdownConfig struct {
 
 // LoggingConfig holds logging-related configuration
 type LoggingConfig struct {
-	JSON    bool   `mapstructure:"json"`
-	Level   string `mapstructure:"level"`
-	Output  string `mapstructure:"output"`
+	JSON   bool   `mapstructure:"json"`
+	Level  string `mapstructure:"level"`
+	Output string `mapstructure:"output"`
 }
 
 // TelemetryConfig holds OpenTelemetry-related configuration
@@ -63,7 +63,7 @@ type SamplerConfig struct {
 // To specify a custom config file path, set DLC_CONFIG_FILE environment variable
 func LoadConfig() (*Config, error) {
 	v := viper.New()
-	
+
 	// Set up initial console logging for config loading messages
 	consoleWriter := zerolog.ConsoleWriter{Out: os.Stderr}
 	log.Logger = log.Output(consoleWriter)
@@ -221,7 +221,7 @@ func (c *Config) SetupLogging() {
 
 	// Setup log output
 	c.setupLogOutput()
-	
+
 	zerolog.TimeFieldFormat = zerolog.TimeFormatUnix
 }
 
@@ -255,14 +255,14 @@ func (c *Config) setupLogOutput() {
 		// Use stderr by default
 		return
 	}
-	
+
 	// Open the log file
 	file, err := os.OpenFile(output, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 	if err != nil {
 		log.Error().Err(err).Str("output", output).Msg("Failed to open log file, using stderr")
 		return
 	}
-	
+
 	// Set the log output
 	log.Logger = log.Output(file)
 	log.Trace().Str("output", output).Msg("Logging to file")