feat(slot,intent): slot strategy-state 저장소 (dcy-028) + sell retryable 플래그 (issue #27)

BAT-042 (dcy-028 / issue #26 C-1/C-2/C-2b/C-3, REQ-079~082 + REQ-073/074 CHG):
- slot_strategy_state 별도 테이블 + StrategyStateStore(in-memory+PG) + occupancy_seq·version CAS + opaque UTF-8 data + 2단 size cap (REQ-079)
- trex.slots.strategy_state.set write RPC — reject reason 집합, 멱등 (REQ-080)
- Slot.occupancy_seq 필드 + inactive→pending_buy bump + →INACTIVE close 삭제 훅 → 점유 전환 ABA 구조적 차단 (REQ-081)
- slots.req 응답 행에 strategy_state 맵(batched 조립)·occupancy_seq additive (REQ-073 AC-7/REQ-074 AC-6)
- 마이그레이션 014(occupancy_seq)/015(slot_strategy_state), baseline 문서 정합 (REQ-082)

BAT-043 (issue #27 / REQ-007 CHG):
- rejected SellIntent 응답에 additive retryable: bool (core 소유 reason→retryable 매핑, 미인식 기본 true, bad_request* false) — 손절매 재시도 안전 경로 decoupling

검증: 487 passed, 47 skipped (신규 41: store CAS 6+ABA, occupancy bump/close 4경로, set RPC 9, slots read 5, retryable 8, PG 게이트), ruff clean.
REQ-079·080·081·082·073·074·007 → Implemented. issue #27 close. PG 경로 실 DB 검증은 release 위임.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

trex_core/runtime/daemon.py

@@ -33,6 +33,7 @@ from trex_core.adapters.messaging import (
 )
 from trex_core.adapters.persistence.migrate import apply_migrations
 from trex_core.adapters.persistence.postgresql import (
+    PgStrategyStateStore,
     PostgreSQLIntentStore,
     PostgreSQLLedgerOutbox,
     PostgreSQLSlotRepository,
@@ -54,6 +55,7 @@ from trex_core.application.messaging_handlers import (
     make_control_rpc_handler,
     make_intent_rpc_handler,
     make_slots_rpc_handler,
+    make_strategy_state_set_handler,
     slot_transition_event_payload,
 )
 from trex_core.application.portfolio import (
@@ -147,7 +149,14 @@ class Daemon:
         # Persistence + services
         self.slot_repo = PostgreSQLSlotRepository(config.dsn)
         self.intent_store = PostgreSQLIntentStore(config.dsn)
-        self.slot_service = SlotService(self.slot_repo, instance_key=config.instance_key)
+        # dcy-028 / REQ-079·081 (BAT-042): opaque strategy-state store. Injected
+        # into the slot service so close (→INACTIVE) deletes the slot's state.
+        self.strategy_state_store = PgStrategyStateStore(config.dsn)
+        self.slot_service = SlotService(
+            self.slot_repo,
+            instance_key=config.instance_key,
+            strategy_state_store=self.strategy_state_store,
+        )
         self.intent_service = IntentService(
             self.slot_service, self.slot_repo, self.intent_store,
             resolve_symbol=self._resolve_symbol,
@@ -284,10 +293,25 @@ class Daemon:
             watchdog_timeout_sec=self.config.safety_sell.watchdog_timeout_sec,
             ledger_outbox=self.outbox,
             max_active_slots=self.config.max_active_slots,
+            strategy_state_store=self.strategy_state_store,  # dcy-028 C-1
         )
         transport.consume_rpc_forever(
             topology.slots_queue(self.config.instance_key), handler, self.stop)
 
+    def _strategy_state_set_loop(self) -> None:
+        # dcy-028 / REQ-080: opaque strategy-state write RPC (occupancy_seq+version CAS).
+        transport = _build_transport(self.config)
+        self._transports.append(transport)
+        try:
+            transport.declare_topology(self.config.instance_key)
+        except Exception:  # noqa: BLE001
+            pass
+        handler = make_strategy_state_set_handler(
+            self.slot_repo, self.strategy_state_store,
+        )
+        transport.consume_rpc_forever(
+            topology.strategy_state_set_queue(self.config.instance_key), handler, self.stop)
+
     def _control_rpc_loop(self) -> None:
         # REQ-043: operator control channel (pause/resume/list + kill_switch/resume_kill_switch).
         transport = _build_transport(self.config)
@@ -338,6 +362,7 @@ class Daemon:
             ("trex-ledger", self._ledger_loop),
             ("trex-intent-rpc", self._intent_rpc_loop),
             ("trex-slots-rpc", self._slots_rpc_loop),
+            ("trex-strategy-state-set", self._strategy_state_set_loop),
             ("trex-control-rpc", self._control_rpc_loop),
             ("trex-snapshot-scheduler", self._snapshot_scheduler_loop),
         ]

trex_core/runtime/reset.py

@@ -38,6 +38,7 @@ SLOT_CORE_TABLES: tuple[str, ...] = (
     "ledger_outbox",
     "snapshot_pause",
     "killswitch_exclusion",
+    "slot_strategy_state",  # dcy-028 / REQ-079 (BAT-042)
 )