Deliver BAT-002: slot-core daemon + HTTP intent API + PostgreSQL

Implement REQ-005~009 (dcy-002 slice 1) as an onion stack on top of the
BAT-001 pure domain:
- application: IntentService (admission + single-writer transition +
  intent_id idempotency via durable intent_log)
- adapters/persistence: PostgreSQLSlotRepository + PostgreSQLIntentStore +
  trex-core-owned migrations (daily_slot per Appendix A, daily_symbol_entries,
  slot_transition_log, intent_log) + in-memory intent store
- adapters/api: FastAPI /v1 (healthz, intents/buy|sell|{id}, slots, capacity)
- runtime: trex-core-daemon entrypoint with lifespan migrate+preallocate

Verification (against local PostgreSQL 18): 74 passed, ruff clean, domain
import sweep shows zero web/db deps (NFR-1), 20-thread concurrency admits
exactly the idle count (NFR-2), idempotent resubmit causes no double
transition (NFR-3), EXPECTED_SLOT_FIELDS<->information_schema drift test
(realizes dcy-001 OQ-2's deferred DB-side check), and a daemon E2E smoke.

Align all four baseline docs to the new daemon/API/persistence layers.
BAT-002 -> release-candidate; REQ-005~009 -> Implemented. Full async outbox,
broker execution, safety floor, and strategy daemons remain deferred to a
follow-up Discovery.

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

docs/project-structure.md

@@ -21,10 +21,11 @@
 - storage-agnostic 순수 도메인 (현재 in-memory repository, PostgreSQL/psycopg 는 향후 영속화 단계에서 도입 예정)
 
 ## Primary Runtime
-- Type: library
-- Planned Entry Points:
-  - SlotService :: 슬롯 생명주기 도메인 서비스 — preallocate / transit / capacity / entry-count 의 in-process API
-  - SlotRepository (Protocol) :: 저장소 추상화 경계 — 구현체(in-memory, 향후 PostgreSQL)를 주입받는 영속화 계약
+- Type: daemon (HTTP API) + library (slot 도메인)
+- Entry Points:
+  - `trex-core-daemon` (console_script → `trex_core.runtime.daemon:main`) :: 슬롯 코어 데몬 — migrate+preallocate lifecycle 후 FastAPI/uvicorn 으로 `/v1` API 서빙 (BAT-002)
+  - HTTP `/v1` :: 매수·매도 전략 데몬용 intent 제출/조회 경계 (docs/interface-contract.md)
+  - SlotService / SlotRepository (Protocol) :: in-process 도메인 서비스 + 저장소 경계(라이브러리 사용)
 
 ## Purpose
 - This document is the current approved repository and package structure baseline.
@@ -55,24 +56,28 @@
 │   ├── project-structure.md
 │   └── runtime-flows.md
 ├── CLAUDE.md                     # SDLC governance instructions
-├── pyproject.toml                # 패키지 메타(배포명 trex-core) + pytest/ruff 설정
+├── pyproject.toml                # 패키지 메타(배포명 trex-core) + console_scripts(trex-core-daemon) + deps
 ├── trex_core/
 │   ├── __init__.py
-│   └── domain/
-│       ├── __init__.py
-│       └── slot/                 # slot 순수 도메인 (BAT-001 이식)
-│           ├── __init__.py       # 공개 API (인프라 심볼 없음)
-│           ├── state.py          # SlotState 6상태 + 전이
-│           ├── models.py         # Slot/SlotCapacity/SlotTransitionRecord + EXPECTED_SLOT_FIELDS
-│           ├── errors.py         # 도메인 예외 4종
-│           ├── repository.py     # SlotRepository Protocol
-│           ├── service.py        # SlotService
-│           └── in_memory_repository.py
+│   ├── domain/slot/              # slot 순수 도메인 (BAT-001, 무의존)
+│   │   ├── __init__.py · state.py · models.py(+EXPECTED_SLOT_FIELDS) · errors.py
+│   │   ├── repository.py(Protocol) · service.py · in_memory_repository.py
+│   ├── application/              # 유스케이스 (BAT-002)
+│   │   ├── ports.py              # IntentStore Protocol
+│   │   └── intents.py            # IntentService / BuyIntent / SellIntent / IntentDecision
+│   ├── adapters/                 # 인프라 어댑터 (BAT-002)
+│   │   ├── api/                  # FastAPI: app.py(create_app /v1) · schemas.py
+│   │   └── persistence/          # postgresql.py · in_memory_intent_store.py · migrate.py · sql/
+│   └── runtime/                  # 데몬 (BAT-002)
+│       ├── config.py             # DaemonConfig(env)
+│       └── daemon.py             # build_app + lifespan(migrate/preallocate) + main(uvicorn)
 └── tests/
-    └── domain/slot/              # test_state / test_service / test_contract
+    ├── domain/slot/              # test_state / test_service / test_contract
+    ├── application/              # test_intent_concurrency (단일 writer)
+    └── adapters/{api,persistence}/  # API(in-memory) · PG repo/migration/drift
 ```
 
-> 참고: `trex_core/`·`tests/`·`pyproject.toml` 은 BAT-001(dcy-001 FR-1~FR-5)에서 실제 생성되었다. 영속화·CLI·config 는 이번 범위 밖이다.
+> 참고: domain(BAT-001)은 무의존 코어. application/adapters/runtime 은 BAT-002(dcy-002 FR-1~FR-6)에서 추가. 웹/DB 의존(fastapi/uvicorn/psycopg)은 adapters/runtime 에만 격리(NFR-1).
 
 ## Package / Module Responsibilities
 
@@ -115,3 +120,4 @@
 - 2026-06-03 :: bootstrap-baseline 으로 초기 구조 baseline 생성(mixed: trex-orbit 코드 관찰 + 이관 계획 선언).
 - 2026-06-03 :: dcy-001 OQ-1 결정 반영 — planned 네임스페이스를 `app/` → `trex_core/` 로 정정(배포명 `trex-core`).
 - 2026-06-03 :: BAT-001 이식 완료 반영 — `trex_core/`·`tests/`·`pyproject.toml` planned→실제 정합(REQ-004).
+- 2026-06-03 :: BAT-002 — application/adapters/runtime 레이어(데몬+HTTP API+PostgreSQL) 추가, Primary Runtime=daemon+library(REQ-005~009).