refactor DNS resolution and IP handling; remove unused utility

utils/index.ts

@@ -1,36 +0,0 @@
-export function isPrivateIP(host: string): boolean {
-  try {
-    const rawIp = host.startsWith('[') ? host.slice(1, -1) : host
-
-    if (rawIp === 'localhost') return true
-
-    if (rawIp.includes('.')) {
-      const parts = rawIp.split('.').map(Number)
-      if (parts.length !== 4 || parts.some(isNaN)) return false
-
-      return (
-        parts[0] === 10 ||
-        (parts[0] === 172 && parts[1] >= 16 && parts[1] <= 31) ||
-        (parts[0] === 192 && parts[1] === 168) ||
-        (parts[0] === 169 && parts[1] === 254)
-      )
-    }
-
-    if (rawIp.includes(':')) {
-      const ip = rawIp.split('%')[0]
-
-      if (ip === '::1') return true
-
-      const firstHextet = parseInt(ip.split(':')[0], 16)
-      if ((firstHextet & 0xfe00) === 0xfc00) return true
-
-      if ((firstHextet & 0xffc0) === 0xfe80) return true
-
-      return false
-    }
-
-    return false
-  } catch {
-    return false
-  }
-}

utils/model.ts

@@ -15,11 +15,11 @@ export interface DNSEntry {
 }
 
 export interface FetchServerInfoRequest {
-  type: 'FETCH_SERVER_INFO';
-  hostname: string;
+  type: 'FETCH_SERVER_INFO'
+  hostname: string
 }
 
 export interface FetchServerInfoResponse {
-  error?: string;
-  data?: ServerData;
+  error?: string
+  data?: ServerData
 }