feat: close measured model review evidence

CHANGELOG.md

@@ -7,6 +7,22 @@
 
 # Changelog
 
+## Sprint 198 Evidence-closed model review (2026-07-15)
+
+- Completed visual and geometric review of 48 persisted false-positive and 48
+  false-negative cards from Geel, Herentals and Turnhout. Only 5 FP and 10 FN
+  records were confirmed model errors; 59 records were QA alignment effects and
+  22 were reference, imagery or uncertainty cases excluded from training.
+- Added a symmetric fail-closed false-negative decision validator and readiness
+  compilation gate. It exports only explicit confirmed misses and rejects
+  incomplete, mismatched or invalid decision sets.
+- Audited the confirmed evidence against the active tile corpus and holdouts.
+  Geel/Herentals evidence already belongs to the training source and Turnhout
+  remains excluded, leaving zero novel leakage-free labels. No model was
+  trained, downloaded, activated or reconfigured.
+- Clarified map quality output with strict match counts and the existing
+  diagnostic reference-envelope match, without changing canonical QA metrics.
+
 ## Sprint 197 Measured detection accuracy and durable review (2026-07-15)
 
 - Re-ran the active local building model at confidence thresholds `0.10` and