feat：添加日志功能

client/src/pages/LogsPage.tsx

@@ -0,0 +1,106 @@
+import { useEffect, useMemo, useState } from 'react';
+import { Alert, Button, Card, InputNumber, Space, Typography } from 'antd';
+import { api, ApiError } from '../lib/api';
+
+export function LogsPage() {
+  const [lines, setLines] = useState<number>(200);
+  const [loading, setLoading] = useState(false);
+  const [downloadLoading, setDownloadLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [file, setFile] = useState<string>('');
+  const [updatedAt, setUpdatedAt] = useState<string>('');
+  const [logLines, setLogLines] = useState<string[]>([]);
+
+  const logText = useMemo(() => logLines.join('\n'), [logLines]);
+
+  const load = async () => {
+    setLoading(true);
+    setError(null);
+    try {
+      const res = await api.getRuntimeLogs(lines);
+      if (!res?.success) {
+        setError(res?.message || '运行日志获取失败');
+        return;
+      }
+      setFile(res?.data?.file || '');
+      setUpdatedAt(res?.data?.updated_at || '');
+      setLogLines(Array.isArray(res?.data?.lines) ? res.data.lines : []);
+    } catch (e) {
+      if (e instanceof ApiError) {
+        setError(e.message);
+      } else {
+        setError(e instanceof Error ? e.message : '运行日志获取失败');
+      }
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  useEffect(() => {
+    void load();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const downloadArchive = async () => {
+    setDownloadLoading(true);
+    setError(null);
+    try {
+      const { blob, filename } = await api.downloadLogsArchive();
+      const url = URL.createObjectURL(blob);
+      try {
+        const a = document.createElement('a');
+        a.href = url;
+        a.download = filename || 'logs.tar.gz';
+        document.body.appendChild(a);
+        a.click();
+        document.body.removeChild(a);
+      } finally {
+        URL.revokeObjectURL(url);
+      }
+    } catch (e) {
+      if (e instanceof ApiError) {
+        setError(e.message);
+      } else {
+        setError(e instanceof Error ? e.message : '日志下载失败');
+      }
+    } finally {
+      setDownloadLoading(false);
+    }
+  };
+
+  return (
+    <Space direction="vertical" style={{ width: '100%' }} size="middle">
+      {error ? <Alert type="error" message={error} /> : null}
+
+      <Card
+        title="运行日志"
+        extra={
+          <Space>
+            <span>行数</span>
+            <InputNumber
+              min={1}
+              max={2000}
+              value={lines}
+              onChange={(v) => setLines(typeof v === 'number' ? v : 200)}
+            />
+            <Button onClick={() => void load()} loading={loading}>
+              刷新
+            </Button>
+            <Button onClick={() => void downloadArchive()} loading={downloadLoading}>
+              下载日志压缩包
+            </Button>
+          </Space>
+        }
+      >
+        <Space direction="vertical" style={{ width: '100%' }} size="small">
+          <Typography.Text type="secondary">
+            {file ? `文件：${file}` : '文件：-'}
+            {updatedAt ? `  更新时间：${updatedAt}` : ''}
+          </Typography.Text>
+
+          <pre style={{ margin: 0, whiteSpace: 'pre-wrap', wordBreak: 'break-word' }}>{logText || '暂无日志'}</pre>
+        </Space>
+      </Card>
+    </Space>
+  );
+}