test(web): extend timeout for ExcelJS workbook export tests

Same pattern as excel.test.ts and skillMatrixParser.test.ts:
ExcelJS dynamic import + writeBuffer exceeds the default 5s vitest
timeout on the QNAP CI runner.

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

apps/web/src/lib/workbook-export.test.ts

@@ -21,17 +21,23 @@ describe("workbook export helpers", () => {
     expect(worksheet?.getRow(1).values).toEqual([, "Skill", "Count", "Active"]);
     expect(worksheet?.getRow(2).values).toEqual([, "TypeScript", 4, true]);
     expect(worksheet?.getRow(3).values).toEqual([, "Planning", 2, false]);
-  });
+  }, 30000);
 
   it("writes all provided sheets into the workbook", async () => {
     const buffer = await createWorkbookArrayBufferFromSheets([
       {
         name: "Overview",
-        rows: [["Metric", "Value"], ["Resources", 12]],
+        rows: [
+          ["Metric", "Value"],
+          ["Resources", 12],
+        ],
       },
       {
         name: "People Finder",
-        rows: [["Name", "Skills"], ["Peter Parker", "Staffing, Forecasting"]],
+        rows: [
+          ["Name", "Skills"],
+          ["Peter Parker", "Staffing, Forecasting"],
+        ],
       },
     ]);
 
@@ -39,15 +45,12 @@ describe("workbook export helpers", () => {
     const workbook = new ExcelJS.Workbook();
     await workbook.xlsx.load(buffer as Parameters<typeof workbook.xlsx.load>[0]);
 
-    expect(workbook.worksheets.map((sheet) => sheet.name)).toEqual([
-      "Overview",
-      "People Finder",
-    ]);
+    expect(workbook.worksheets.map((sheet) => sheet.name)).toEqual(["Overview", "People Finder"]);
     expect(workbook.getWorksheet("Overview")?.getRow(2).values).toEqual([, "Resources", 12]);
     expect(workbook.getWorksheet("People Finder")?.getRow(2).values).toEqual([
       ,
       "Peter Parker",
       "Staffing, Forecasting",
     ]);
-  });
+  }, 30000);
 });