Add dynamic log level adjustment and "type" field to auth files response

- Introduced `SetLogLevel` utility function for unified log level management.
- Updated dynamic log level handling across server and watcher components.
- Extended auth files response by extracting and including the `type` field from file content.
- Updated management API documentation with the new `type` field in auth files response.

internal/watcher/watcher.go

@@ -168,6 +168,14 @@ func (w *Watcher) reloadConfig() {
 	w.config = newConfig
 	w.clientsMutex.Unlock()
 
+	// Always apply the current log level based on the latest config.
+	// This ensures logrus reflects the desired level even if change detection misses.
+	util.SetLogLevel(newConfig)
+	// Additional debug for visibility when the flag actually changes.
+	if oldConfig != nil && oldConfig.Debug != newConfig.Debug {
+		log.Debugf("log level updated - debug mode changed from %t to %t", oldConfig.Debug, newConfig.Debug)
+	}
+
 	// Log configuration changes in debug mode
 	if oldConfig != nil {
 		log.Debugf("config changes detected:")