fix(reconcile): symbol을 슬롯 생성 시 함께 저장 + NULL 슬롯 backfill

reconcile_universe 시그니처를 set[str] → dict[str, str] (portfolio_id→symbol)로 변경.
기존 symbol=NULL 슬롯은 다음 reconcile 실행 시 자동 backfill.

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

tests/domain/slot/test_execution_policy_lifecycle.py

@@ -24,7 +24,7 @@ def service(repo):
 
 
 def _seed(repo):
-    repo.reconcile_universe(INST, {"PF-1"})
+    repo.reconcile_universe(INST, {"PF-1": "SYM"})
     return repo.list_slots(INST)[0]
 
 

tests/domain/slot/test_price_threshold_fields.py

@@ -24,7 +24,7 @@ def service(repo):
 
 
 def _inactive_slot(repo):
-    repo.reconcile_universe(INST, {"pf-1"})
+    repo.reconcile_universe(INST, {"pf-1": "SYM"})
     return repo.find_slot_by_portfolio(INST, "pf-1")
 
 

tests/domain/slot/test_service.py

@@ -36,7 +36,7 @@ def service(repo):
 
 def _seed(repo, n=1):
     """Create n permanent asset slots (inactive) via universe reconcile."""
-    repo.reconcile_universe(INST, {f"pf-{i}" for i in range(n)})
+    repo.reconcile_universe(INST, {f"pf-{i}": "SYM" for i in range(n)})
     return sorted(repo.list_slots(INST), key=lambda s: s.portfolio_id)
 
 

tests/domain/slot/test_service_sell.py

@@ -25,7 +25,7 @@ def service(repo):
 
 
 def _inactive_slot(repo):
-    repo.reconcile_universe(INST, {"pf-1"})
+    repo.reconcile_universe(INST, {"pf-1": "SYM"})
     return repo.find_slot_by_portfolio(INST, "pf-1")
 
 

tests/domain/slot/test_universe_reconcile.py

@@ -15,17 +15,17 @@ def repo():
 
 
 def test_creates_asset_slots_idempotently(repo):
-    r1 = repo.reconcile_universe(INST, {"pf-a", "pf-b"})
+    r1 = repo.reconcile_universe(INST, {"pf-a": "SYM", "pf-b": "SYM"})
     assert r1["created"] == 2
     # idempotent — second pass creates nothing
-    r2 = repo.reconcile_universe(INST, {"pf-a", "pf-b"})
+    r2 = repo.reconcile_universe(INST, {"pf-a": "SYM", "pf-b": "SYM"})
     assert r2["created"] == 0
     assert repo.find_slot_by_portfolio(INST, "pf-a").status is SlotState.INACTIVE
 
 
 def test_soft_retire_inactive_asset_that_left_universe(repo):
-    repo.reconcile_universe(INST, {"pf-a", "pf-b"})
-    r = repo.reconcile_universe(INST, {"pf-a"})  # pf-b left
+    repo.reconcile_universe(INST, {"pf-a": "SYM", "pf-b": "SYM"})
+    r = repo.reconcile_universe(INST, {"pf-a": "SYM"})  # pf-b left
     assert r["retired"] == 1
     slot_b = repo.find_slot_by_portfolio(INST, "pf-b")
     assert slot_b.retired_at is not None  # soft-retired, row preserved
@@ -33,28 +33,28 @@ def test_soft_retire_inactive_asset_that_left_universe(repo):
 
 def test_tombstone_holding_asset_that_left_universe(repo):
     svc = SlotService(repo, instance_key=INST)
-    repo.reconcile_universe(INST, {"pf-a"})
+    repo.reconcile_universe(INST, {"pf-a": "SYM"})
     slot = repo.find_slot_by_portfolio(INST, "pf-a")
     svc.transit_slot(slot.slot_id, slot.status, SlotState.PENDING_BUY,
                      reason="r", actor="a", symbol="005930")
     svc.transit_slot(slot.slot_id, SlotState.PENDING_BUY, SlotState.HOLDING,
                      reason="r", actor="a", avg_price=70_000)
-    r = repo.reconcile_universe(INST, set())  # pf-a left while holding
+    r = repo.reconcile_universe(INST, {})  # pf-a left while holding
     assert r["tombstoned"] == 1 and r["retired"] == 0
     held = repo.find_slot_by_portfolio(INST, "pf-a")
     assert held.status is SlotState.HOLDING and held.retired_at is None  # protected
 
 
 def test_allow_retire_false_skips_retire(repo):
-    repo.reconcile_universe(INST, {"pf-a", "pf-b"})
-    r = repo.reconcile_universe(INST, {"pf-a"}, allow_retire=False)
+    repo.reconcile_universe(INST, {"pf-a": "SYM", "pf-b": "SYM"})
+    r = repo.reconcile_universe(INST, {"pf-a": "SYM"}, allow_retire=False)
     assert r["retired"] == 0
     assert repo.find_slot_by_portfolio(INST, "pf-b").retired_at is None
 
 
 def test_count_active(repo):
     svc = SlotService(repo, instance_key=INST)
-    repo.reconcile_universe(INST, {"pf-a", "pf-b"})
+    repo.reconcile_universe(INST, {"pf-a": "SYM", "pf-b": "SYM"})
     assert repo.count_active(INST) == 0
     slot = repo.find_slot_by_portfolio(INST, "pf-a")
     svc.transit_slot(slot.slot_id, slot.status, SlotState.PENDING_BUY,
@@ -63,8 +63,8 @@ def test_count_active(repo):
 
 
 def test_instance_isolation(repo):
-    repo.reconcile_universe("inst-1", {"pf-a"})
-    repo.reconcile_universe("inst-2", {"pf-a"})
+    repo.reconcile_universe("inst-1", {"pf-a": "SYM"})
+    repo.reconcile_universe("inst-2", {"pf-a": "SYM"})
     # same portfolio_id, different instances -> two distinct slots
     assert repo.find_slot_by_portfolio("inst-1", "pf-a").slot_id != \
         repo.find_slot_by_portfolio("inst-2", "pf-a").slot_id