Enable SpotBugs failOnError

https://claude.ai/code/session_01Teo4XcbGFp8LmxeiY8N37h

Author: claude

pom.xml

@@ -316,7 +316,7 @@ SPDX-License-Identifier: MIT
 				<configuration>
 					<effort>Default</effort>
 					<threshold>Default</threshold>
-					<failOnError>false</failOnError>
+					<failOnError>true</failOnError>
 					<includeTests>false</includeTests>
 					<excludeFilterFile>spotbugs-exclude.xml</excludeFilterFile>
 					<plugins>