feat(rel-006): dcy-022/023 + BAT-032~034 — 실행 정책·qty 검증·allocated_capital 제거 통합

BAT-032 (dcy-022): timeout_sec/slippage_pct 실행 정책, 미체결 자동 취소,
보호 지정가, `trex-core cancel` 백스톱. 마이그레이션 012.
BAT-033: `trex-core enter --qty` 필수 검증 — 미지정 시 RPC 전 즉시 오류.
BAT-034 (dcy-023): allocated_capital 죽은 필드 전 경로 제거 (domain·intent·
persistence·snapshot·CLI). 마이그레이션 013(비가역 DROP). 외부 발신자
unknown key 무시 수신 의미론 적용.
REL-006 confirmed: BAT-026~034 통합 릴리즈, pre-release smoke 증거 포함.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

trex_core/domain/slot/models.py

@@ -31,7 +31,6 @@ class Slot:
     # on pending exit (→HOLDING, →INACTIVE) so a buy limit never leaks into a
     # sell order (issue #10). None => market order at dispatch.
     limit_price: Optional[float] = None
-    allocated_capital: Optional[float] = None
     order_id: Optional[str] = None
     strategy_id: Optional[str] = None
     broker_order_id: Optional[str] = None  # BAT-003 / REQ-011 (trex-orbit lineage)
@@ -47,6 +46,11 @@ class Slot:
     # instance-scoped. retired_at marks a soft-retired / universe-detached slot.
     instance_key: str = "default"
     retired_at: Optional[datetime] = None
+    # dcy-022 / REQ-068: execution policy — set on PENDING entry, cleared on exit.
+    # timeout_sec: cancel_order is sent after this many seconds of no fill.
+    # slippage_pct: effective limit = entry_price * (1 ± pct/100); None = no band.
+    timeout_sec: Optional[int] = None
+    slippage_pct: Optional[float] = None
 
 
 # Canonical column contract for `Slot` (dcy-001 OQ-2 / FR-5).
@@ -60,7 +64,6 @@ EXPECTED_SLOT_FIELDS: frozenset[str] = frozenset({
     "qty",
     "avg_price",
     "limit_price",
-    "allocated_capital",
     "order_id",
     "strategy_id",
     "broker_order_id",
@@ -73,6 +76,8 @@ EXPECTED_SLOT_FIELDS: frozenset[str] = frozenset({
     "updated_at",
     "instance_key",       # dcy-020 / REQ-056 (BAT-027)
     "retired_at",         # dcy-020 / REQ-056 (BAT-027)
+    "timeout_sec",        # dcy-022 / REQ-068 (BAT-032)
+    "slippage_pct",       # dcy-022 / REQ-068 (BAT-032)
 })