chore: 初始提交 Fonu 1.0.2

- 公网反代：Nginx 状态卡片（版本 / 运行状态 / 配置校验 / 端口监听）
- 部署设置第一、二梯队（HTTPS 开关、安全头、限流、连接数、仅中国大陆 IP）
- 隧道检测兼容 frps v0.68 / v0.71（V2 与旧版端点）
- 恢复被清空的 internal/frp/store.go、internal/api/ddns_handler.go、web/src/views/DdnsView.vue

web/src/utils/logDisplay.ts

@@ -0,0 +1,165 @@
+import type { SystemLogEntry } from '../api/types'
+import { formatLogTime } from './format'
+
+export type LogTagType = 'success' | 'info' | 'warning' | 'error' | 'default'
+
+export interface DisplaySystemLogEntry extends SystemLogEntry {
+  displayLevel: string
+  displayModule: string
+}
+
+const SYSTEM_LEVEL_LABELS: Record<string, string> = {
+  INFO: '信息',
+  WARN: '警告',
+  ERROR: '错误',
+  DEBUG: '调试',
+}
+
+const SYSTEM_MODULE_LABELS: Record<string, string> = {
+  SYSTEM: '系统',
+  NGINX: 'Nginx',
+  DDNS: '域名解析',
+  ACME: '证书',
+  CERT: '证书',
+  CHINA_CIDR: '中国 IP 段',
+  API: 'API',
+  HTTP: 'HTTP',
+  FRP: '内网穿透',
+}
+
+export function systemLevelLabel(level: string): string {
+  const upper = level.trim().toUpperCase()
+  return SYSTEM_LEVEL_LABELS[upper] ?? level
+}
+
+export function systemModuleLabel(module: string): string {
+  const trimmed = module.trim()
+  if (!trimmed) return '系统'
+  const upper = trimmed.toUpperCase()
+  return SYSTEM_MODULE_LABELS[upper] ?? trimmed
+}
+
+export function displaySystemLog(entry: SystemLogEntry): DisplaySystemLogEntry {
+  const message = entry.message.trim()
+  const msgLower = message.toLowerCase()
+  let level = entry.level.trim().toUpperCase()
+  let displayModule = systemModuleLabel(entry.module)
+
+  if (
+    level === 'INFO' &&
+    (msgLower.includes('server error') ||
+      msgLower.includes(' failed') ||
+      msgLower.startsWith('error') ||
+      msgLower.includes('bind:'))
+  ) {
+    level = 'ERROR'
+  }
+
+  return {
+    ...entry,
+    displayLevel: systemLevelLabel(level),
+    displayModule,
+  }
+}
+
+export interface ParsedNginxError {
+  time: string
+  level: string
+  message: string
+  raw: string
+}
+
+export function parseNginxErrorLine(line: string): ParsedNginxError {
+  const raw = line.trim()
+  const match = raw.match(/^(\d{4}[-/]\d{2}[-/]\d{2} \d{2}:\d{2}:\d{2})\s+\[([^\]]+)\]\s+(.+)$/)
+  if (!match) {
+    return { time: '', level: 'unknown', message: raw, raw }
+  }
+  return {
+    time: formatLogTime(match[1]),
+    level: match[2].toLowerCase(),
+    message: match[3],
+    raw,
+  }
+}
+
+export function nginxLevelTagType(level: string): LogTagType {
+  switch (level.toLowerCase()) {
+    case 'emerg':
+    case 'alert':
+    case 'crit':
+    case 'error':
+      return 'error'
+    case 'warn':
+    case 'warning':
+      return 'warning'
+    case 'notice':
+    case 'info':
+      return 'info'
+    default:
+      return 'default'
+  }
+}
+
+export function systemLevelTagType(level: string): LogTagType {
+  const upper = level.trim().toUpperCase()
+  if (upper === 'ERROR' || level === '错误') return 'error'
+  if (upper === 'WARN' || level === '警告') return 'warning'
+  if (upper === 'INFO' || level === '信息') return 'info'
+  return 'default'
+}
+
+export function systemModuleTagType(module: string): LogTagType {
+  const upper = module.trim().toUpperCase()
+  switch (upper) {
+    case 'NGINX':
+    case 'Nginx':
+      return 'warning'
+    case 'SYSTEM':
+    case '系统':
+      return 'success'
+    case 'CHINA_CIDR':
+    case '中国 IP 段':
+      return 'info'
+    case 'DDNS':
+    case '域名解析':
+      return 'info'
+    case 'CERT':
+    case 'ACME':
+    case '证书':
+      return 'warning'
+    default:
+      return 'default'
+  }
+}
+
+export function latencyClass(seconds: number): string {
+  const ms = seconds * 1000
+  if (ms >= 3000) return 'log-duration log-duration--critical'
+  if (ms >= 1000) return 'log-duration log-duration--slow'
+  return 'log-duration'
+}
+
+export function streamLineClass(line: string): string {
+  const parsed = parseNginxErrorLine(line)
+  if (parsed.level !== 'unknown') {
+    const type = nginxLevelTagType(parsed.level)
+    if (type === 'error') return 'level-error'
+    if (type === 'warning') return 'level-warn'
+    if (type === 'info') return 'level-info'
+  }
+
+  const lower = line.toLowerCase()
+  if (lower.includes('[error]') || lower.includes(' emerg ') || lower.includes(' alert ') || lower.includes(' crit ')) {
+    return 'level-error'
+  }
+  if (lower.includes('[warn]') || lower.includes(' warning ')) return 'level-warn'
+
+  const statusMatch = line.match(/\s(\d{3})\s+\d/)
+  if (statusMatch) {
+    const code = Number(statusMatch[1])
+    if (code >= 500) return 'level-error'
+    if (code >= 400) return 'level-warn'
+  }
+  return ''
+}