diff --git a/M02_MasterTemplete/M02_MasterTemplete_Spreadsheet_Trial.ts b/M02_MasterTemplete/M02_MasterTemplete_Spreadsheet_Trial.ts
index 7d655959..bbe3ffc2 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Spreadsheet_Trial.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Spreadsheet_Trial.ts
@@ -56,7 +56,10 @@ export function mountSpreadsheetTrial(
         readSpreadsheetTrial(),
       ]);
       if (!alive) return;
-      sheet = createSpreadsheet(area, got.문서 as Workbook, { onChange: () => onDirty(true) });
+      sheet = createSpreadsheet(area, got.문서 as Workbook, {
+        onChange: () => onDirty(true),
+        inspect: true, // ⚠ 임시 — 브레인 검증용 문맥(window.__aisloSheet) · 산출근거 카드는 안 넘김
+      });
     } catch (error) {
       if (!alive) return;
       area.replaceChildren(el("p", { className: "m02-trial__empty", text: why(error) }));