chore: plan for review blockers follow-up

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

trex_core/adapters/broker/kis.py

@@ -386,9 +386,7 @@ class KISBroker:
         transport_failure: bool,
     ) -> float:
         """Return bounded state/age-based delay for the next authoritative poll."""
-        if status.state != "unknown":
-            delay = _FILL_POLL_MIN_INTERVAL_SECONDS
-        elif age_seconds < 60:
+        if status.state != "unknown" or age_seconds < 60:
             delay = _FILL_POLL_MIN_INTERVAL_SECONDS
         elif age_seconds < 5 * 60:
             delay = 15.0
@@ -1290,6 +1288,9 @@ class KISBroker:
             seen_continuations.add(next_continuation)
             continuation = next_continuation
 
+    def exposes_full_balance_snapshot(self) -> bool:
+        return True
+
     def get_available_cash(self, *, price_check_code: str = "005930") -> int:
         """Return KIS cash-only buy capacity (`nrcvb_buy_amt`).
 

trex_core/adapters/broker/ownership.py

@@ -13,11 +13,11 @@ import os
 from datetime import datetime
 from pathlib import Path
 from threading import Lock
-from typing import Optional
 
 from trex_core.application.broker_port import (
     BalanceItem,
     BrokerBalanceError,
+    BrokerPort,
     CancelOutcome,
     FillStatus,
     OrderAck,
@@ -134,8 +134,8 @@ class OwnershipAwareBroker:
         *,
         side: str,
         symbol: str,
-        order_date: Optional[str] = None,
-        submitted_at: Optional[datetime] = None,
+        order_date: str | None = None,
+        submitted_at: datetime | None = None,
     ) -> FillStatus:
         result = self._delegate.poll_fill(
             broker_order_id,
@@ -175,6 +175,13 @@ class OwnershipAwareBroker:
     def get_balance(self) -> list[BalanceItem]:
         return self._store.project(self._delegate.get_balance())
 
+    def authoritative_balance_reader(self) -> BrokerPort:
+        return self._delegate
+
+    def exposes_full_balance_snapshot(self) -> bool:
+        """False: projected balances omit operator-owned/unmanaged broker positions."""
+        return False
+
     def account_scope_hash(self) -> str:
         return self._delegate.account_scope_hash()
 

trex_core/adapters/broker/paper.py

@@ -166,6 +166,9 @@ class PaperBroker:
         return [BalanceItem(symbol=sym, hldg_qty=qty)
                 for sym, qty in balances.items() if qty != 0]
 
+    def exposes_full_balance_snapshot(self) -> bool:
+        return True
+
     # --- REQ-038: programmable current price (safety-sell scenario double) ---
     def set_current_price(self, symbol: str, price: Decimal) -> None:
         """Program the current price returned by get_current_price(symbol)."""