Use explicit risk gates for SAFE approval

CHECKSUMS.sha256

@@ -10,7 +10,7 @@ ad56ac369ef2949200f6d45eaeeff4d77c9f5f780780975434c9e4c5aafda29b  RELEASE_NOTES_
 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855  app/__init__.py
 c4891fc509f38fb94d9006be910c18b7573645c11da3532c38356302d99c7e55  app/config.py
 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855  app/core/__init__.py
-d275508ca46c82aacf06b8603486fc1196b558a188b3b90829cd0f6163da4612  app/core/analyzer.py
+f3c348363a4519ac6ab7c3a98045747e961379b62b391157cbd9db10d23be54b  app/core/analyzer.py
 48c155a14807a76713edb7579076fa877587e5cff9e35f8f7d0fef35d821396f  app/core/calibration.py
 ecc608094af12bc17a728263a7e963bde91ea26ac2a8715101e7493735f95453  app/core/competitions.py
 0545a029d7488a10cc6d3dd8d2c69c38d5b6b3246ceb34b035ed0f2b77570e49  app/core/history.py

app/core/analyzer.py

@@ -299,6 +299,8 @@ def analyze_events(
                 reasons.append("mercado muito disperso para a seleção")
             if data_quality < 0.52:
                 reasons.append("qualidade de dados insuficiente")
+            if reliability < 0.60:
+                reasons.append("confiabilidade combinada abaixo do mínimo")
             if calibrated_p < min_probability:
                 reasons.append("probabilidade abaixo do filtro")
             if conservative < min_conservative_probability:
@@ -319,8 +321,9 @@ def analyze_events(
                 reasons.append("seleção mudou desde o último scan")
             if version_conflict:
                 reasons.append("evento já rastreado por uma versão anterior")
-            if score < min_safe_score:
-                reasons.append("SafeScore abaixo do mínimo")
+            # SafeScore is a transparent ranking/label. Approval is controlled by
+            # the explicit safety gates above, avoiding a second, opaque veto over
+            # candidates that already satisfy every measurable requirement.
 
             row = {
                 "side": side,