Implement Spring Boot 4 adoption checklist: Priority 0 migrations#2430

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Mar 6, 2026

Commits on Mar 2, 2026

Fix SlackNotificationServiceTest: add LENIENT strictness to suppress UnnecessaryStubbingException

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Commits on Mar 6, 2026

Fix ApiExceptionAdvice.java: apply spotless formatting (single-line setTitle)

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Merge branch 'master' into copilot/finish-spring-boot-migration
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Merge branch 'master' into copilot/finish-spring-boot-migration
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authored