feat: propagate intent venue through execution

trex_core/application/intents.py

@@ -75,6 +75,7 @@ class BuyIntent:
     # slippage_pct: effective limit = entry_price*(1+pct/100) buy / *(1-pct/100) sell.
     timeout_sec: Optional[int] = None
     slippage_pct: Optional[float] = None
+    venue: str = "KRX"
     extra: dict[str, Any] = field(default_factory=dict)
 
 
@@ -93,6 +94,7 @@ class SellIntent:
     # dcy-022 / REQ-068: execution policy (optional, backward-compat).
     timeout_sec: Optional[int] = None
     slippage_pct: Optional[float] = None
+    venue: str = "KRX"
     extra: dict[str, Any] = field(default_factory=dict)
 
 
@@ -152,6 +154,7 @@ class IntentService:
             "entry_price": intent.entry_price,
             "strategy_id": intent.strategy_id,
             "sell_strategy_id": intent.sell_strategy_id,
+            "venue": intent.venue,
         }
         prior = self._dedup(intent.intent_id, "buy", payload)
         if prior is not None:
@@ -169,6 +172,7 @@ class IntentService:
             "reason": intent.reason,
             "sell_strategy_id": intent.sell_strategy_id,
             "qty": intent.qty,
+            "venue": intent.venue,
         }
         prior = self._dedup(intent.intent_id, "sell", payload)
         if prior is not None:
@@ -207,6 +211,9 @@ class IntentService:
         dcy-036 / REQ-114: entry gate — if entry_allowed_fn returns False,
         BuyIntent is rejected before any slot lookup."""
 
+        if intent.venue not in {"KRX", "NXT", "SOR"}:
+            return IntentDecision(intent.intent_id, "rejected", None, "invalid_venue")
+
         # dcy-036 / REQ-114: day-start entry gate (fail-closed).
         # None or True → pass; False → reject new entry.
         # SellIntent is NOT checked (청산 경로는 차단하지 않음 AC-5).
@@ -292,6 +299,7 @@ class IntentService:
                     take_profit_price=intent.take_profit_price,
                     timeout_sec=effective_timeout,
                     slippage_pct=intent.slippage_pct,
+                    venue=intent.venue,
                     extra={"intent_id": intent.intent_id, "symbol": symbol},
                 )
             except SlotStateMismatchError:
@@ -300,6 +308,9 @@ class IntentService:
         return IntentDecision(intent.intent_id, "rejected", None, "already_active")
 
     def _admit_sell(self, intent: SellIntent) -> IntentDecision:
+        if intent.venue not in {"KRX", "NXT", "SOR"}:
+            return IntentDecision(intent.intent_id, "rejected", None, "invalid_venue")
+
         slot = self._repo.fetch_slot(intent.slot_id)
         if slot is None:
             return IntentDecision(intent.intent_id, "rejected", None, "slot_not_found")
@@ -342,6 +353,7 @@ class IntentService:
                 qty=intent.qty,
                 timeout_sec=effective_timeout,
                 slippage_pct=intent.slippage_pct,
+                venue=intent.venue,
                 extra={"intent_id": intent.intent_id},
             )
         except SlotStateMismatchError: