[fix]:[FL-135][高程数据管理页面表格高度占满页面]

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>

web/src/app/admin/elevation/page.tsx

@@ -1094,11 +1094,12 @@ export default function AdminElevationPage() {
   const datasetTableScrollX = 1940;
 
   return (
-    <div className="min-h-screen space-y-6">
+    <div className="flex min-h-screen flex-col space-y-6">
       {messageContextHolder}
 
       <Card
         title="高程数据集"
+        className="flex-1 flex flex-col"
         extra={(
           <Space>
             {datasetsQuery.isFetching && <Spin size="small" />}
@@ -1126,8 +1127,11 @@ export default function AdminElevationPage() {
             )}
           </Space>
         )}
+        styles={{
+          body: { display: 'flex', flexDirection: 'column', flex: 1, minHeight: 0 }
+        }}
       >
-        <Form layout="inline" style={{ rowGap: 12 }}>
+        <Form layout="inline" style={{ rowGap: 12, flexShrink: 0 }}>
           <Form.Item label="关键词" className="min-w-[240px]">
             <Input
               allowClear
@@ -1166,7 +1170,7 @@ export default function AdminElevationPage() {
 
         <div
           ref={tableScrollAnchorRef}
-          className="admin-datasets-table-anchor mt-4"
+          className="admin-datasets-table-anchor mt-4 flex-1"
           style={{ "--admin-datasets-table-body-min-height": `${tableScrollY}px` } as CSSProperties}
         >
           <Table<ElevationDatasetSummary>