chore: v0.6.0 baseline — 主题美化前存档

已实现：HTTP/TCP/Banner 探测、90 天可用率、表格/卡片视图、数据源过滤、UptimeRobot 双向兼容、服务端驱动的刷新节奏、刷新接口滥用防护与信息泄露控制。
2026-10-13 18:31:58 +08:00
commit 3db3ce570a
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+const USER_AGENT = 'shiroko-monitor/0.2 (lightweight uptime panel)';
+
+export async function probeHttp(monitor) {
+  const started = Date.now();
+  const timeoutMs = (monitor.timeout ?? 10) * 1000;
+  try {
+    // redirect: manual —— 保留 3xx 原始状态码交给 expectStatus 判定，避免跟随重定向掩盖异常
+    const res = await fetch(monitor.url, {
+      method: monitor.method || 'GET',
+      redirect: 'manual',
+      signal: AbortSignal.timeout(timeoutMs),
+      headers: { 'user-agent': USER_AGENT, accept: '*/*' },
+    });
+    const latency = Date.now() - started;
+    const expect = monitor.expectStatus ?? [200];
+    const ok = expect.includes(res.status);
+    return {
+      status: ok ? 'up' : 'down',
+      latency,
+      code: res.status,
+      detail: ok ? `HTTP ${res.status}` : `HTTP ${res.status}（期望 ${expect.join('/')}）`,
+    };
+  } catch (err) {
+    const latency = Date.now() - started;
+    let detail;
+    if (err.name === 'TimeoutError') detail = `请求超时（>${timeoutMs / 1000}s）`;
+    else if (err.cause?.code) detail = err.cause.code;
+    else detail = err.message;
+    return { status: 'down', latency, code: 0, detail };
+  }
+}