refactor(asl): ASL frontend architecture refactoring with left navigation

- feat: Create ASLLayout component with 7-module left navigation
- feat: Implement Title Screening Settings page with optimized PICOS layout
- feat: Add placeholder pages for Workbench and Results
- fix: Fix nested routing structure for React Router v6
- fix: Resolve Spin component warning in MainLayout
- fix: Add QueryClientProvider to App.tsx
- style: Optimize PICOS form layout (P+I left, C+O+S right)
- style: Align Inclusion/Exclusion criteria side-by-side
- docs: Add architecture refactoring and routing fix reports

Ref: Week 2 Frontend Development
Scope: ASL module MVP - Title Abstract Screening

backend/scripts/check-excel-columns.ts

@@ -0,0 +1,22 @@
+import XLSX from 'xlsx';
+
+const filePath = 'D:\\MyCursor\\AIclinicalresearch\\docs\\03-业务模块\\ASL-AI智能文献\\05-测试文档\\03-测试数据\\screening\\Test Cases.xlsx';
+
+const workbook = XLSX.readFile(filePath);
+const sheetName = workbook.SheetNames[0];
+const worksheet = workbook.Sheets[sheetName];
+const data = XLSX.utils.sheet_to_json(worksheet);
+
+console.log(`总行数: ${data.length}`);
+console.log('\n前3行数据:');
+data.slice(0, 3).forEach((row: any, i) => {
+  console.log(`\n第${i+1}行:`);
+  console.log(JSON.stringify(row, null, 2));
+});
+
+console.log('\n所有列名:');
+if (data.length > 0) {
+  console.log(Object.keys(data[0]));
+}
+
+