fix: comprehensive UI fix — all table columns have explicit widths, no ellipsis on data, consistent scroll.x

apps/admin/src/pages/ClassroomRentals/index.tsx

@@ -164,7 +164,7 @@ const ClassroomRentalsPage: React.FC = () => {
 
   const columns = [
     {
-      title: '教室',
+      title: '教室', width: 120,
       dataIndex: 'classroom',
       render: (c: any) =>
         c ? (
@@ -177,7 +177,7 @@ const ClassroomRentalsPage: React.FC = () => {
         ),
     },
     {
-      title: '租赁方',
+      title: '租赁方', width: 100,
       dataIndex: 'tenant',
       render: (t: any) =>
         t ? (
@@ -188,19 +188,19 @@ const ClassroomRentalsPage: React.FC = () => {
           '-'
         ),
     },
-    { title: '开始日期', dataIndex: 'startDate' },
-    { title: '结束日期', dataIndex: 'endDate' },
+    { title: '开始日期', dataIndex: 'startDate', width: 110 },
+    { title: '结束日期', dataIndex: 'endDate', width: 110 },
     {
-      title: '时长',
+      title: '时长', width: 80,
       render: (_: any, r: any) => {
         const d = dayjs(r.endDate).diff(dayjs(r.startDate), 'day') + 1;
         return `${d}天`;
       },
     },
-    { title: '日租金', dataIndex: 'dailyRate', render: (v: any) => (v ? `¥${v}` : '-') },
-    { title: '总额', dataIndex: 'totalAmount', render: (v: any) => (v ? `¥${v}` : '-') },
+    { title: '日租金', dataIndex: 'dailyRate', width: 100, render: (v: any) => (v ? `¥${v}` : '-') },
+    { title: '总额', dataIndex: 'totalAmount', width: 100, render: (v: any) => (v ? `¥${v}` : '-') },
     {
-      title: '合同',
+      title: '合同', width: 120,
       dataIndex: 'contractPath',
       render: (v: string, r: any) =>
         v ? (