feat(alarm): trex-core 알람 emitter + trex.alerts exchange (dcy-033 BAT-049, Implemented)

AlarmEmitter(application, best-effort 비차단)+trex.alerts topic exchange 가산·격리+8 CRITICAL code 배선. 608 passed, opus QC PASS, 팀장 e2e(텔레그램 HTTP200) 통과. REQ-098~101 Implemented.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VHtM5Ws1HKCKQ4JGi6GRb5

trex_core/application/execution.py

@@ -27,6 +27,7 @@ from dataclasses import dataclass
 from datetime import datetime, timezone
 from typing import Callable, Optional
 
+from trex_core.application.alarm_emitter import AlarmEmitter
 from trex_core.application.broker_port import BrokerPort, OrderRequest
 from trex_core.application.ledger_outbox import LedgerOutbox
 from trex_core.application.ledger_port import LedgerTrade
@@ -67,6 +68,7 @@ class ExecutionService:
         event_emitter: Optional[SlotEventEmitter] = None,
         stale_pending_threshold_sec: Optional[int] = None,
         instance_key: str = "default",
+        alarm_emitter: Optional[AlarmEmitter] = None,
     ) -> None:
         self._svc = slot_service
         self._repo = repo
@@ -85,6 +87,8 @@ class ExecutionService:
             if stale_pending_threshold_sec and stale_pending_threshold_sec > 0
             else None
         )
+        # dcy-033 / REQ-100: best-effort alarm emitter (None = no alarms sent).
+        self._alarm_emitter = alarm_emitter
 
     # ------------------------------------------------------------
     def run_once(self) -> ExecutionResult:
@@ -130,6 +134,13 @@ class ExecutionService:
                         "(divergence — no order submitted; operator/reconcile attention)",
                         slot.slot_id, slot.symbol,
                     )
+                    # dcy-033 / REQ-100: CRITICAL alarm — PENDING_SELL may stick.
+                    if self._alarm_emitter is not None:
+                        self._alarm_emitter.publish_alarm(
+                            "sell_skipped_no_balance",
+                            f"매도 dispatch skip: 브로커 잔고 0 (slot={slot.slot_id} symbol={slot.symbol})",
+                            fields={"slot_id": str(slot.slot_id), "symbol": slot.symbol},
+                        )
                     continue
             else:
                 qty = int(slot.qty or 0)
@@ -265,6 +276,14 @@ class ExecutionService:
             slot.slot_id, slot.symbol, slot.broker_order_id,
             avg, limit,
         )
+        # dcy-033 / REQ-100: CRITICAL alarm — slot stuck in PENDING.
+        if self._alarm_emitter is not None:
+            self._alarm_emitter.publish_alarm(
+                "fill_price_unresolvable",
+                f"체결가 미해결: 슬롯 PENDING 고착 위험 (slot={slot.slot_id} symbol={slot.symbol})",
+                fields={"slot_id": str(slot.slot_id), "symbol": slot.symbol,
+                        "broker_order_id": slot.broker_order_id},
+            )
         return None, False
 
     def _on_filled(self, slot, fs, side: str, r: ExecutionResult) -> None: