chore: enable PMD GuardLogStatement rule

Remove the GuardLogStatement exclusion and configure the rule for
debug/trace levels. Also replace bare TODO comments on remaining
excluded rules (PreserveStackTrace, UseTryWithResources) with
actionable descriptions.

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

Author: joaodinissf

ddk-configuration/pmd/ruleset.xml

@@ -75,7 +75,6 @@
     <exclude name="UnusedPrivateMethod"/><!-- false positives-->
     <exclude name="DefaultLabelNotLastInSwitch"/>
     <exclude name="ForLoopCanBeForeach"/>
-    <exclude name="GuardLogStatement"/><!--TODO-->
     <exclude name="ImplicitFunctionalInterface"/>
     <exclude name="UnitTestAssertionsShouldIncludeMessage"/>
     <exclude name="UnitTestContainsTooManyAsserts"/><!--New after PMD 5.3 upgrade, limitation to 1 assert not sensible, would need customization, disabled for the time being-->
@@ -88,6 +87,12 @@
     <exclude name="UnusedLocalVariable"/><!--Checkstyle-->
     <exclude name="JUnit5TestShouldBePackagePrivate"/>
   </rule>
+  <rule ref="category/java/bestpractices.xml/GuardLogStatement">
+    <properties>
+      <property name="logLevels" value="trace,debug" />
+      <property name="guardsMethods" value="isTraceEnabled,isDebugEnabled" />
+    </properties>
+  </rule>
   <rule ref="category/java/bestpractices.xml/UnusedFormalParameter">
     <properties>
         <property name="checkAll" value="true" />