test(web): extend timeout for ExcelJS-based excel import tests

ExcelJS dynamic import + workbook writeBuffer exceeds the default 5s
vitest timeout on the constrained QNAP CI runner, matching the same
pattern already applied to skillMatrixParser.test.ts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/lib/excel.test.ts

@@ -1,14 +1,7 @@
 import { describe, expect, it } from "vitest";
-import {
-  MAX_BROWSER_SPREADSHEET_BYTES,
-  assertSpreadsheetFile,
-  parseSpreadsheet,
-} from "./excel.js";
+import { MAX_BROWSER_SPREADSHEET_BYTES, assertSpreadsheetFile, parseSpreadsheet } from "./excel.js";
 
-async function createWorkbookFile(
-  rows: unknown[][],
-  fileName = "spreadsheet.xlsx",
-): Promise<File> {
+async function createWorkbookFile(rows: unknown[][], fileName = "spreadsheet.xlsx"): Promise<File> {
   const ExcelJS = await import("exceljs");
   const workbook = new ExcelJS.Workbook();
   const worksheet = workbook.addWorksheet("Sheet1");
@@ -25,11 +18,9 @@ async function createWorkbookFile(
 
 describe("excel import helpers", () => {
   it("parses csv files with quoted values and skips blank rows", async () => {
-    const file = new File(
-      ['name,role\n"Alice, A.",Engineer\n\nBob,Producer\n'],
-      "people.csv",
-      { type: "text/csv" },
-    );
+    const file = new File(['name,role\n"Alice, A.",Engineer\n\nBob,Producer\n'], "people.csv", {
+      type: "text/csv",
+    });
 
     await expect(parseSpreadsheet(file)).resolves.toEqual([
       { name: "Alice, A.", role: "Engineer" },
@@ -38,6 +29,7 @@ describe("excel import helpers", () => {
   });
 
   it("parses xlsx files and normalizes date cells to ISO strings", async () => {
+    // ExcelJS dynamic import + workbook writeBuffer is slow on constrained CI runners.
     const file = await createWorkbookFile([
       ["name", "startDate", "active"],
       ["Alice", new Date("2026-03-30T09:15:00.000Z"), true],
@@ -50,7 +42,7 @@ describe("excel import helpers", () => {
         active: "true",
       },
     ]);
-  });
+  }, 30000);
 
   it("rejects duplicate headers in xlsx imports", async () => {
     const file = await createWorkbookFile([
@@ -59,16 +51,14 @@ describe("excel import helpers", () => {
     ]);
 
     await expect(parseSpreadsheet(file)).rejects.toThrow('duplicate header "name"');
-  });
+  }, 30000);
 
   it("rejects legacy .xls uploads before parsing", () => {
     const file = new File(["legacy"], "legacy.xls", {
       type: "application/vnd.ms-excel",
     });
 
-    expect(() => assertSpreadsheetFile(file)).toThrow(
-      "Legacy .xls files are not supported.",
-    );
+    expect(() => assertSpreadsheetFile(file)).toThrow("Legacy .xls files are not supported.");
   });
 
   it("rejects oversized spreadsheet uploads before parsing", () => {