Squashable commit; JDBC transaction engine now functionally complete

Signed-off-by: Laird Nelson <laird.nelson@oracle.com>

transaction/jdbc/etc/spotbugs/exclude.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+    Copyright (c) 2026 Oracle and/or its affiliates.
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+
+<FindBugsFilter
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xmlns="https://github.com/spotbugs/filter/3.0.0"
+        xsi:schemaLocation="https://github.com/spotbugs/filter/3.0.0 https://raw.githubusercontent.com/spotbugs/spotbugs/3.1.0/spotbugs/etc/findbugsfilter.xsd">
+    <Match>
+        <Class name="~io\.helidon\.transaction\.jdbc\.DelegatingConnection"/>
+        <Bug pattern="EXTERNAL_CONFIG_CONTROL, SQL_INJECTION_JDBC"/>
+    </Match>
+</FindBugsFilter>

transaction/jdbc/pom.xml

@@ -30,11 +30,19 @@
     <artifactId>helidon-transaction-jdbc</artifactId>
     <name>Helidon Transaction JDBC</name>
 
+    <properties>
+        <spotbugs.exclude>etc/spotbugs/exclude.xml</spotbugs.exclude>
+    </properties>
+
     <dependencies>
         <dependency>
             <groupId>io.helidon.common</groupId>
             <artifactId>helidon-common</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.helidon.data.jdbc</groupId>
+            <artifactId>helidon-data-jdbc</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.helidon.service</groupId>
             <artifactId>helidon-service-registry</artifactId>