- Inject DiagramRepository into ClickHouseExecutionRepository for hash lookup
- Replace empty string placeholder with actual SHA-256 diagram hash in insertBatch
- Add Surefire/Failsafe forkCount=1 reuseForks=false for classloader isolation
- Add failsafe-plugin integration-test/verify goals for IT execution
- Create DiagramLinkingIT with positive (hash populated) and negative (empty fallback) cases
- Fix flaky awaitility assertions with ignoreExceptions for EmptyResultDataAccess
- Increase IngestionSchemaIT timeouts to 30s for reliable batch flush waits
- Adjust SearchControllerIT pagination assertion to match correct seed data count
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>