fix: bound detection QA to inference coverage

CHANGELOG.md

@@ -14,6 +14,10 @@
 - Kept manual manifest execution, model assets, preflight and calibration available under technical/management disclosures while making persisted detection QA a primary user step.
 - Added clear preparation progress, understandable Dutch QA diagnostics, result-to-map navigation and focused regression coverage.
 - Did not change API contracts, database migrations, model dependencies or backend inference behavior.
+- Live Mol validation persisted 1,953 configured-YOLO detections from nine georeferenced tiles and exposed a regional QA scaling defect before release.
+- Detection QA now applies the persisted tile coverage through the existing GiST-indexed PostGIS geometry column before loading reference rows, while retaining the complete reference population in audit counts.
+- The unchanged exact IoU matcher now uses a Shapely spatial index to avoid testing geometries whose envelopes cannot intersect.
+- Clarified the primary map source and legend whenever an AI result is active so detections are never presented as the underlying official GRB source.
 
 ## Sprint 194 Regional official time-series synchronization (2026-07-14)