fix: align warning-case blocking semantics across reconcile paths

Co-authored-by: genichin <4282227+genichin@users.noreply.github.com>

trex_core/application/portfolio.py

@@ -21,6 +21,8 @@ from datetime import UTC, datetime
 from enum import Enum
 from typing import Protocol
 
+BLOCKING_RECONCILE_CASES = frozenset({"B", "C"})
+
 # ---------------------------------------------------------------- portfolio-hub
 
 @dataclass(frozen=True)
@@ -658,7 +660,7 @@ def slot_to_dict(
     reconcile_warned = bool(warning_cases)
     d["reconcile_warned"] = reconcile_warned
     d["reconcile_warning_cases"] = sorted(warning_cases)
-    d["trade_eligible"] = not reconcile_warned
+    d["trade_eligible"] = not bool(warning_cases & BLOCKING_RECONCILE_CASES)
 
     return d