Implement BAT-006: portfolio-hub ledger integration (REQ-017~019)

- REQ-017: LedgerPort contract (application/ledger_port.py) + portfolio-hub
  adapter + in-memory stub (adapters/ledger/), TREX_PORTFOLIO_HUB_* config
- REQ-018: fill→ledger recording in execution loop; FillStatus carries
  execution_id (deterministic synth) + fee; paper/kis adapters updated
- REQ-019: ledger outbox + retry worker (application/ledger_outbox.py),
  correlation_id idempotency, outcome vocabulary; 002_create_ledger_outbox.sql
- Tests: in-memory/portfolio-hub ledger, execution ledger hook, outbox,
  domain import sweep

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

trex_core/adapters/broker/kis.py

@@ -15,7 +15,12 @@ from typing import Optional
 
 import httpx
 
-from trex_core.application.broker_port import FillStatus, OrderAck, OrderRequest
+from trex_core.application.broker_port import (
+    FillStatus,
+    OrderAck,
+    OrderRequest,
+    calculate_fee,
+)
 
 _KST = timezone(timedelta(hours=9))
 _MOCK_HINTS = ("openapivts", "virtual", "mock")
@@ -175,8 +180,19 @@ class KISBroker:
         if ccld_qty <= 0:
             return FillStatus(state="accepted", raw=row)
         if ccld_qty >= ord_qty and ord_qty > 0:
-            return FillStatus(state="filled", filled_qty=ccld_qty,
-                              avg_price=float(avg) if avg else None, raw=row)
+            # Deterministic execution_id (dcy-004 OQ-3, orbit kis.py rule):
+            #   kis-daily-ccld:{ord_dt}:{ord_gno_brno}:{odno}:{tot_ccld_qty}
+            ord_dt = str(row.get("ord_dt") or today)
+            ord_gno_brno = str(row.get("ord_gno_brno") or "")
+            row_odno = str(row.get("odno") or odno)
+            execution_id = f"kis-daily-ccld:{ord_dt}:{ord_gno_brno}:{row_odno}:{ccld_qty}"
+            fill_price = float(avg) if avg else 0.0
+            fee = calculate_fee(side, ccld_qty * fill_price)
+            return FillStatus(
+                state="filled", filled_qty=ccld_qty,
+                avg_price=fill_price or None,
+                execution_id=execution_id, fee=fee, tax=0.0, raw=row,
+            )
         return FillStatus(state="partially_filled", filled_qty=ccld_qty,
                           avg_price=float(avg) if avg else None, raw=row)