Debugging Spring Security

Two quick methods for debugging Spring Security issues in a Spring Boot app. First, set the logging level for `org.springframework.security` to `trace` in `application.yaml` or `application.properties` to get detailed filter chain output in the console. Second, enable debug mode directly on the `@EnableWebSecurity` annotation by setting `debug=true` in your security config class, which logs request details and the security filter chain without the full trace verbosity. Note: the debug flag should never be used in production as it may expose sensitive information.