fix: classify conditional previews and normalize currency

tests/test_issue_12_regressions.py

@@ -31,6 +31,15 @@ def test_empty_conditional_close_is_closed_and_second_close_requires_correction(
     assert second["success"] is False and second["error_code"] == "validation_error"
 
 
+def test_preview_marks_approval_eligible_missing_valuation_as_conditional(tmp_path):
+    path = str(tmp_path / "ledger.sqlite3")
+    service.create_ledger_account("미확인 계좌", db_path=path)
+    preview = service.preview_asset_snapshot_close("2026-06-30", db_path=path)
+    assert preview["success"] is True
+    assert preview["close_status"] == "conditional"
+    assert any(warning["code"] == "missing_verified_exact_valuation" for warning in preview["warnings"])
+
+
 def test_reconciliation_uses_corrected_investment_leaf_without_transaction_count_change(tmp_path):
     path = str(tmp_path / "ledger.sqlite3")
     account = service.create_ledger_account("투자", type="investment", last_balance=100, last_synced_at="2026-06-30", db_path=path)["account"]["id"]
@@ -421,6 +430,20 @@ def test_non_krw_account_valuation_is_excluded_without_fx_conversion(tmp_path):
     assert any(item.get("reason") == "non_krw_without_fx" for item in report["excluded_items"])
 
 
+def test_legacy_lowercase_krw_account_currency_selects_normalized_valuation(tmp_path):
+    path = str(tmp_path / "ledger.sqlite3")
+    account = service.create_ledger_account("계좌", currency="KRW", db_path=path)["account"]["id"]
+    service.register_account_valuation(
+        account, "2026-06-30", 100, currency="KRW",
+        verification_status="verified", db_path=path,
+    )
+    with sqlite3.connect(path) as conn:
+        conn.execute("UPDATE accounts SET currency='krw' WHERE id=?", (account,))
+    report = service.get_asset_snapshot_report("2026-06-30", db_path=path)
+    assert report["total_assets"] == 100
+    assert report["excluded_items"] == []
+
+
 def test_rejected_valuation_is_not_an_unverified_candidate(tmp_path):
     path = str(tmp_path / "ledger.sqlite3")
     account = service.create_ledger_account("계좌", db_path=path)["account"]["id"]