fix: preserve schema 15 compatibility for v0.1.8

dashboard/page_views/monthly_settlement.py

@@ -188,6 +188,10 @@ def _render_monthly_list(db_path: str) -> None:
 
 
 def page_monthly_settlement(db_path: str) -> None:
+    if _query_value("legacy") == "1":
+        from .legacy_monthly_settlement import page_legacy_monthly_settlement
+        page_legacy_monthly_settlement(db_path)
+        return
     settlement_id = _query_value("id")
     legacy_month = _query_value("month")
     if not settlement_id and legacy_month:
@@ -198,7 +202,8 @@ def page_monthly_settlement(db_path: str) -> None:
             st.query_params["id"] = settlement_id
             st.query_params.pop("month", None)
         else:
-            st.error("월정산을 찾을 수 없습니다.")
+            from .legacy_monthly_settlement import page_legacy_monthly_settlement
+            page_legacy_monthly_settlement(db_path)
             return
     if settlement_id:
         year = _query_value("year", "전체")
@@ -271,6 +276,7 @@ def page_monthly_settlement(db_path: str) -> None:
             _render_monthly_detail(db_path, month)
         return
     _render_monthly_list(db_path)
+    st.link_button("기존 자산 마감 · 초안 및 이력", "?page=monthly_settlement&legacy=1")
 
 
 def _account_evaluation_totals(rows: list[dict]) -> dict: