Modernize to Java 17, Spring 6.2.3, and Jakarta EE 9#1

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Copilot wants to merge 9 commits intomainfrom

copilot/evaluate-modernization-java-spring

Commits on Jan 25, 2026

Initial plan
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Update Java to 17, Spring to 6.2.3, and core dependencies to Jakarta EE

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Migrate javax.* imports to jakarta.* across 1582 Java files

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Update POM files for Jakarta namespace and fix dependency versions

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Add comprehensive modernization report and update documentation

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Add Jakarta Mail implementation dependency for runtime support

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SECURITY: Update Tomcat to 11.0.11 to fix critical vulnerabilities

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Update documentation with Tomcat security fix details

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Add build and test status report - partial validation complete

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