feat: sync latest ARR implementation

monthly_reports/xlsx/build_workbook.mjs

@@ -242,6 +242,11 @@ function writeSheet(workbook, channel) {
   const lastRow = matrix.length;
   const used = sheet.getRange(`A1:${lastColumn}${lastRow}`);
   used.values = matrix;
+  if (channel.rows.length > 0) {
+    sheet.getRange(`S2:S${lastRow}`).formulas = channel.rows.map((_, index) => [
+      `=R${index + 2}*C${index + 2}*G${index + 2}`,
+    ]);
+  }
   used.format.font = { name: "Arial", size: 10, color: BODY_FONT };
   used.format.verticalAlignment = "center";
   used.format.borders = {
@@ -328,22 +333,41 @@ async function validateWorkbook(workbook, payload, stage) {
         }
       });
     });
+    const formulas = used?.formulas ?? [];
+    formulas.forEach((formulaRow, rowIndex) => {
+      formulaRow.forEach((formulaValue, columnIndex) => {
+        const formula = String(formulaValue ?? "").trim();
+        if (!formula) return;
+        formulaCount += 1;
+        const expectedFormula = `=R${rowIndex + 1}*C${rowIndex + 1}*G${rowIndex + 1}`;
+        if (
+          rowIndex < 1
+          || columnIndex !== channel.headers.indexOf("TOTAL PRICE")
+          || formula !== expectedFormula
+        ) {
+          fail(`${stage} workbook contains an unauthorized formula`);
+        }
+      });
+    });
     const inspected = await workbook.inspect({
       kind: "formula",
       sheetId: channel.worksheet,
       range: `A1:${lastColumn}${expectedRows}`,
       maxChars: 6000,
-      options: { maxResults: 100 },
+      options: { maxResults: Math.max(channel.rows.length + 10, 100) },
     });
     const inspectionText = String(inspected.ndjson ?? "");
-    formulaCount += inspectionText
-      .split("\n")
-      .filter((line) => line.includes('"kind":"formula"')).length;
     if (/#REF!|#DIV\/0!|#VALUE!|#NAME\?|#N\/A/.test(inspectionText)) {
       fail(`${stage} workbook contains a formula error`);
     }
   }
-  if (formulaCount !== 0) fail(`${stage} workbook must contain no formulas`);
+  const expectedFormulaCount = payload.channels.reduce(
+    (total, channel) => total + channel.rows.length,
+    0,
+  );
+  if (formulaCount !== expectedFormulaCount) {
+    fail(`${stage} workbook TOTAL PRICE formulas are incomplete`);
+  }
   return formulaCount;
 }