* Sanitize JetStream stream name derived from subject
* Refactor stream name generation in JetStreamObservableQueue
* Add unit tests for JetStreamObservableQueue
* Migrate NATS tests to JUnit 5 and fix spotless violations
- Migrate JetStreamObservableQueueTest from JUnit 4 to JUnit 5
(@ExtendWith(MockitoExtension), @BeforeEach, jupiter Assertions)
- Apply spotless formatting to test and main source files
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Co-authored-by: Naomi Most <naomi.most@orkes.io>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>