feat(intents): dcy-011 buy intent portfolio_id 필수 계약 + ledger skip 가시화 (BAT-015)

dcy-011 전 주기 delivery. issue #6(buy 식별자 정정) + issue #11(ledger silent skip) 흡수.
거버넌스: 기존 Implemented REQ는 change-req, 신규 기능만 신규 REQ(OQ-3).

- REQ-007 (change-req): buy admission portfolio_id 필수화 + SnapshotStore symbol
  resolve + unknown_portfolio 거부 (hard cutover, OQ-1/OQ-2)
- REQ-021 (change-req): buy 메시지 payload symbol 제거
- REQ-018 (change-req): _record_ledger skip 가시화 (WARN + ledger_skipped 카운터)
- REQ-055 (신규): closed↔ledger_outbox anti-join 운영 점검 find_ledger_gap_slots

코드: intents.py(BuyIntent portfolio_id 필수 + resolve_symbol 주입 + _admit_buy
reject 분기), messaging_handlers.py, runtime/daemon.py(_resolve_symbol 배선),
execution.py(skip WARN 로그), adapters/persistence/ops_checks.py(신규 anti-join).

검증: 단위 282 passed/32 skipped, 인프라 게이트(PG+RabbitMQ) 314 passed, ruff clean.
BAT-015(standard) release-candidate. srs/index Next ID → REQ-056.

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

tests/application/test_messaging_intent_consumer.py

@@ -22,18 +22,21 @@ DAY = date(2026, 6, 5)
 def _wire():
     repo = InMemorySlotRepository()
     svc = SlotService(repo)
-    intents = IntentService(svc, repo, InMemoryIntentStore())
+    # dcy-011 / REQ-007: buy resolves symbol from the universe via resolver.
+    intents = IntentService(svc, repo, InMemoryIntentStore(),
+                            resolve_symbol=lambda pid: "005930")
     svc.preallocate_daily_slots(DAY, 3)
     return repo, svc, intents
 
 
-def _buy_req(intent_id: str, symbol: str = "005930") -> RpcRequest:
+def _buy_req(intent_id: str, portfolio_id: str = "PF-1") -> RpcRequest:
+    # dcy-011 / REQ-021: buy payload carries portfolio_id (required); no symbol.
     return RpcRequest(
         payload={
             "intent_type": "buy",
             "intent_id": intent_id,
             "trading_date": DAY.isoformat(),
-            "symbol": symbol,
+            "portfolio_id": portfolio_id,
             "qty": 10,
         },
         correlation_id=intent_id,
@@ -119,7 +122,7 @@ def test_correlation_id_is_used_as_intent_id_when_missing_in_payload():
         payload={
             "intent_type": "buy",
             "trading_date": DAY.isoformat(),
-            "symbol": "005930",
+            "portfolio_id": "PF-1",
             "qty": 5,
         },
         correlation_id="cid-only",
@@ -130,3 +133,43 @@ def test_correlation_id_is_used_as_intent_id_when_missing_in_payload():
     assert r1.payload == r2.payload
     pending = [s for s in repo.list_slots(DAY) if s.status is SlotState.PENDING_BUY]
     assert len(pending) == 1
+
+
+# ---- dcy-011 / REQ-007/021: portfolio_id required + symbol resolve ----------
+
+def test_buy_without_portfolio_id_rejected():
+    """FR-1 / S-1: missing portfolio_id → portfolio_id_required reject."""
+    repo, _, intents = _wire()
+    handler = make_intent_rpc_handler(intents)
+    req = RpcRequest(
+        payload={"intent_type": "buy", "intent_id": "no-pf",
+                 "trading_date": DAY.isoformat(), "qty": 5},
+        correlation_id="no-pf",
+    )
+    resp = handler(req)
+    assert resp.payload["status"] == "rejected"
+    assert resp.payload["reason"] == "portfolio_id_required"
+
+
+def test_buy_unknown_portfolio_rejected():
+    """FR-3 / S-1: portfolio_id absent from universe → unknown_portfolio reject."""
+    repo = InMemorySlotRepository()
+    svc = SlotService(repo)
+    intents = IntentService(svc, repo, InMemoryIntentStore(),
+                            resolve_symbol=lambda pid: None)  # universe empty
+    svc.preallocate_daily_slots(DAY, 3)
+    handler = make_intent_rpc_handler(intents)
+    resp = handler(_buy_req("u1", portfolio_id="PF-X"))
+    assert resp.payload["status"] == "rejected"
+    assert resp.payload["reason"] == "unknown_portfolio"
+
+
+def test_buy_symbol_resolved_from_universe():
+    """FR-2 / S-1: symbol is resolved server-side from portfolio_id (no client symbol)."""
+    repo, _, intents = _wire()  # resolver → "005930"
+    handler = make_intent_rpc_handler(intents)
+    resp = handler(_buy_req("r1", portfolio_id="PF-9"))
+    assert resp.payload["status"] == "admitted"
+    from uuid import UUID
+    slot = repo.fetch_slot(UUID(resp.payload["slot_id"]))
+    assert slot.symbol == "005930" and slot.portfolio_id == "PF-9"