fix: add source JAR, javadoc JAR, GPG signing for Maven Central

Central Portal requires all three artifacts. Moved from release
profile to default build so beta releases include them too.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: aksOps

.github/workflows/beta-java.yml

@@ -24,6 +24,7 @@ jobs:
           server-id: central
           server-username: MAVEN_USERNAME
           server-password: MAVEN_PASSWORD
+          gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }}
 
       - name: Determine beta version
         id: version
@@ -52,7 +53,7 @@ jobs:
         env:
           MAVEN_USERNAME: ${{ secrets.OSS_NEXUS_USER }}
           MAVEN_PASSWORD: ${{ secrets.OSS_NEXUS_PASS }}
-        run: mvn deploy -DskipTests -Dgpg.skip=true -B
+        run: mvn deploy -DskipTests -B
 
       - name: Create git tag
         env:

pom.xml

@@ -269,6 +269,59 @@
                     <autoPublish>true</autoPublish>
                 </configuration>
             </plugin>
+
+            <!-- Source JAR (required by Maven Central) -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <goals>
+                            <goal>jar-no-fork</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <!-- Javadoc JAR (required by Maven Central) -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <configuration>
+                    <doclint>none</doclint>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>attach-javadocs</id>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <!-- GPG signing (required by Maven Central, no passphrase) -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-gpg-plugin</artifactId>
+                <version>3.2.7</version>
+                <executions>
+                    <execution>
+                        <id>sign-artifacts</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>sign</goal>
+                        </goals>
+                        <configuration>
+                            <gpgArguments>
+                                <arg>--pinentry-mode</arg>
+                                <arg>loopback</arg>
+                            </gpgArguments>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>