feat(core-A): reconcile-warning durable store + blocking gate (BAT-050, REQ-102/103/104/107/108)

B/C 불일치 시 슬롯을 durable 차단(ReconcileWarningStore)하고 전략 intent 경로에
pause∨reconcile_warned 게이트를 추가한다. 안전망(safety-sell/kill-switch/watchdog)
경로는 SlotService 직접 호출로 게이트를 구조적으로 우회(OQ-B 확정).
SlotState enum/전이표/wire 계약 필드는 불변, reconcile_warned 필드만 additive 추가.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VHtM5Ws1HKCKQ4JGi6GRb5

trex_core/application/messaging_handlers.py

@@ -16,6 +16,7 @@ from trex_core.application.intents import BuyIntent, IntentService, SellIntent
 from trex_core.application.messaging import RpcRequest, RpcResponse
 from trex_core.application.portfolio import (
     PauseStore,
+    ReconcileWarningStore,
     SnapshotStore,
     slot_to_dict,
 )
@@ -220,6 +221,7 @@ def make_slots_rpc_handler(
     instance_key: str = "default",
     snapshot_store: Optional[SnapshotStore] = None,
     pause_store: Optional[PauseStore] = None,
+    warn_store: Optional[ReconcileWarningStore] = None,
     watchdog_store: Optional[WatchdogStore] = None,
     watchdog_timeout_sec: int = 120,
     ledger_outbox=None,
@@ -261,12 +263,14 @@ def make_slots_rpc_handler(
                 watchdog_store.update(str(s.slot_id))
 
         # Build merged slot rows (REQ-074)
+        # BAT-050 / REQ-104: warn_store passed to slot_to_dict for reconcile_warned field.
         slot_rows = [
             slot_to_dict(
                 s,
                 snapshot_store=snapshot_store,
                 watchdog_store=watchdog_store,
                 pause_store=pause_store,
+                warn_store=warn_store,
                 watchdog_timeout_sec=watchdog_timeout_sec,
             )
             for s in slots