fix(risk): harden apply_risk_gate and relax pool rotation limits

Preserve budgets on reject; pool rotation uses default gate; trend/BTC use 50% cap.

Co-Authored-By: Claude <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: 3 people

src/crypto_strategies/entrypoints/__init__.py

@@ -261,7 +261,7 @@ def evaluate_crypto_live_pool_rotation(ctx: StrategyContext) -> StrategyDecision
         risk_flags=risk_flags,
         diagnostics=diagnostics,
     )
-    return apply_risk_gate(decision, max_single_weight=0.30)
+    return apply_risk_gate(decision)
 
 
 crypto_live_pool_rotation_entrypoint = CallableStrategyEntrypoint(
@@ -426,7 +426,7 @@ def evaluate_crypto_trend_rotation(ctx: StrategyContext) -> StrategyDecision:
         risk_flags=risk_flags,
         diagnostics=diagnostics,
     )
-    return apply_risk_gate(decision, max_single_weight=0.30)
+    return apply_risk_gate(decision, max_single_weight=0.50)
 
 
 crypto_trend_rotation_entrypoint = CallableStrategyEntrypoint(