dc283ba271
OcrTrainingService.triggerTraining() and triggerSegTraining() held a DB connection open for the entire ketos training run (potentially minutes), risking connection pool exhaustion. Replaced class-level @Transactional with TransactionTemplate for narrow DB writes: guard+create and result-record each run in their own short transaction; the HTTP call to the OCR service runs between them with no open connection. Also replaces blockRepository.findAll().size() with blockRepository.count() in getTrainingInfo() to avoid loading every block into heap on each poll. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>