feat(import): harden workbook parser boundaries

packages/application/src/use-cases/dispo-import/parse-dispo-matrix.ts

@@ -166,6 +166,25 @@ function getSlotHalfDayPart(slotLabel: string | null): "AFTERNOON" | "MORNING" |
   return null;
 }
 
+function isPlanningSummaryRow(row: ReadonlyArray<WorksheetCellValue>): boolean {
+  if ((row[0] ?? null) !== null || (row[1] ?? null) !== null) {
+    return false;
+  }
+
+  const repeatedLabels = row
+    .slice(DISPO_EID_COLUMN - 1, 9)
+    .map((value) => normalizeNullableWorkbookValue(value))
+    .filter((value): value is string => value !== null);
+  if (repeatedLabels.length === 0) {
+    return false;
+  }
+
+  const normalizedLabels = new Set(repeatedLabels.map((value) => value.toLowerCase()));
+  const label = repeatedLabels[0] ?? null;
+
+  return normalizedLabels.size === 1 && label !== null && label.startsWith("(") && label.endsWith(")");
+}
+
 function buildPlanningColumns(rows: ReadonlyArray<ReadonlyArray<WorksheetCellValue>>) {
   const columns: PlanningColumn[] = [];
   const headerWidth = Math.max(rows[DISPO_DATE_ROW - 1]?.length ?? 0, rows[DISPO_SLOT_ROW - 1]?.length ?? 0);
@@ -483,6 +502,9 @@ export async function parseDispoPlanningWorkbook(
 
   for (let rowNumber = DISPO_DATA_START_ROW; rowNumber <= rows.length; rowNumber += 1) {
     const row = rows[rowNumber - 1] ?? [];
+    if (isPlanningSummaryRow(row)) {
+      continue;
+    }
     const eid = normalizeNullableWorkbookValue(row[DISPO_EID_COLUMN - 1]);
 
     if (!eid) {