feat: 配置版本历史/对比/回滚、国内 IM 通知渠道、阈值告警与 API Token（v1.2.9）

- 配置版本：fsutil 版本化备份（内容相同自动去重），主 nginx.conf 与 VPS vhost 的版本列表/逐行差异/一键回滚，回滚先校验语法与 nginx -t 再写回 - agent 0.12.2：写 vhost 前留版本；nginx -t 校验失败改为恢复上一个可用版本（此前直接删文件），新增域名 vhost 版本端点，双架构二进制已重编 - 通知：补企业微信 / 钉钉 / 飞书机器人，切换预设时服务地址跟随该预设默认值 - 阈值告警：新增 internal/monitor 巡检（CPU/内存/磁盘持续超阈值、隧道连续 N 次未注册），默认关闭，带静默期与恢复通知 - API Token：api_tokens 表 + Authorization Bearer 认证，只读/读写两种范围；令牌管理与改密/退出仅限登录会话
2026-09-24 20:50:17 +08:00
parent 8f75e99339
commit 862442e77f
42 changed files with 3034 additions and 190 deletions
@@ -0,0 +1,73 @@
+// 极简行级差异：Nginx 配置通常只有几十行，用 LCS 就够，不为此引入第三方 diff 依赖。
+
+export interface DiffLine {
+  kind: 'same' | 'add' | 'del'
+  text: string
+  oldLine?: number
+  newLine?: number
+}
+
+// maxDiffCells 限制 LCS 表大小：超长文本（例如整份日志误粘进来）退化为「整体替换」，
+// 避免 O(n*m) 的表把页面卡死。
+const maxDiffCells = 250_000
+
+export function diffLines(fromText: string, toText: string): DiffLine[] {
+  const from = splitLines(fromText)
+  const to = splitLines(toText)
+
+  if (from.length * to.length > maxDiffCells) {
+    return [
+      ...from.map((text, index) => ({ kind: 'del' as const, text, oldLine: index + 1 })),
+      ...to.map((text, index) => ({ kind: 'add' as const, text, newLine: index + 1 })),
+    ]
+  }
+
+  // dp[i][j] = from[i..] 与 to[j..] 的最长公共子序列长度
+  const dp: number[][] = Array.from({ length: from.length + 1 }, () => new Array<number>(to.length + 1).fill(0))
+  for (let i = from.length - 1; i >= 0; i -= 1) {
+    for (let j = to.length - 1; j >= 0; j -= 1) {
+      dp[i][j] = from[i] === to[j] ? dp[i + 1][j + 1] + 1 : Math.max(dp[i + 1][j], dp[i][j + 1])
+    }
+  }
+
+  const out: DiffLine[] = []
+  let i = 0
+  let j = 0
+  while (i < from.length && j < to.length) {
+    if (from[i] === to[j]) {
+      out.push({ kind: 'same', text: from[i], oldLine: i + 1, newLine: j + 1 })
+      i += 1
+      j += 1
+    } else if (dp[i + 1][j] >= dp[i][j + 1]) {
+      out.push({ kind: 'del', text: from[i], oldLine: i + 1 })
+      i += 1
+    } else {
+      out.push({ kind: 'add', text: to[j], newLine: j + 1 })
+      j += 1
+    }
+  }
+  while (i < from.length) {
+    out.push({ kind: 'del', text: from[i], oldLine: i + 1 })
+    i += 1
+  }
+  while (j < to.length) {
+    out.push({ kind: 'add', text: to[j], newLine: j + 1 })
+    j += 1
+  }
+  return out
+}
+
+export function diffStats(lines: DiffLine[]): { added: number; removed: number } {
+  let added = 0
+  let removed = 0
+  for (const line of lines) {
+    if (line.kind === 'add') added += 1
+    else if (line.kind === 'del') removed += 1
+  }
+  return { added, removed }
+}
+
+function splitLines(text: string): string[] {
+  if (text === '') return []
+  return text.replace(/\r\n/g, '\n').replace(/\n+$/, '').split('\n')
+}