Stability checkpoint — coverage bump (ApiError + Ollama DOWN branch) Single MR landed since stable-v1.0.40 (svc !176) : 🧪 Tests - ApiErrorTest (4 tests) — locks the Java record contract for the com.mirador.api.ApiError DTO. Was 0% covered ; brings com.mirador.api.* package coverage to 100%. - OllamaHealthIndicatorTest.unexpectedException_returnsDown — tests the Health.down() fallback for non-ResourceAccessException errors. Bumps OllamaHealthIndicator from 68% → ~75% by exercising the else branch of the "is-Ollama-just-not-running" check. Post-merge main pipeline #770 green on SHA 1b304f6 (MR !176 merge).