Add IP allowlist and diagnostic PowerShell scripts

Added allowed_ips_updated.txt containing updated allowed IPs and configuration examples. Introduced check_ip.ps1 and check_ip_fixed.ps1 for checking current IPs against the allowlist and performing connectivity tests, with the fixed version improving external IP detection. Added diagnose_127.ps1 to help diagnose and resolve issues related to services binding to 127.0.0.1.

check_ip.ps1

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+# IP地址檢查和設定腳本
+# 檢查當前IP地址並與允許清單比較
+
+Write-Host "=== IP地址檢查工具 ===" -ForegroundColor Green
+Write-Host ""
+
+# 獲取本地IP地址
+Write-Host "本地網路IP地址:" -ForegroundColor Yellow
+$localIPs = Get-NetIPAddress | Where-Object {$_.AddressFamily -eq "IPv4" -and $_.IPAddress -notlike "127.*" -and $_.IPAddress -notlike "169.*"} | Select-Object IPAddress, InterfaceAlias
+foreach ($ip in $localIPs) {
+    Write-Host "  $($ip.IPAddress) - $($ip.InterfaceAlias)" -ForegroundColor Cyan
+}
+
+Write-Host ""
+
+# 獲取外部IP地址
+Write-Host "外部IP地址:" -ForegroundColor Yellow
+try {
+    $externalIP = (Invoke-WebRequest -Uri "https://ifconfig.me" -UseBasicParsing).Content
+    Write-Host "  $externalIP" -ForegroundColor Cyan
+} catch {
+    Write-Host "  無法獲取外部IP地址" -ForegroundColor Red
+}
+
+Write-Host ""
+
+# 允許的IP清單
+$allowedIPs = @(
+    "114.33.18.13",  # 岡山 Hinet
+    "125.229.65.83", # 汐止
+    "60.248.164.91", # 汐止
+    "220.132.236.89", # 新竹
+    "211.72.69.222", # 新竹
+    "219.87.170.253", # 璟茂
+    "114.40.30.219", # zhaoi
+    "125.228.50.228"  # 璟茂
+)
+
+Write-Host "允許的IP清單:" -ForegroundColor Yellow
+foreach ($ip in $allowedIPs) {
+    Write-Host "  $ip" -ForegroundColor White
+}
+
+Write-Host ""
+
+# 檢查當前IP是否在允許清單中
+$currentIP = $externalIP
+if ($allowedIPs -contains $currentIP) {
+    Write-Host "✅ 當前IP ($currentIP) 在允許清單中" -ForegroundColor Green
+} else {
+    Write-Host "❌ 當前IP ($currentIP) 不在允許清單中" -ForegroundColor Red
+    Write-Host "請聯繫管理員將 $currentIP 加入允許清單" -ForegroundColor Yellow
+}
+
+Write-Host ""
+
+# 檢查網路連接
+Write-Host "網路連接測試:" -ForegroundColor Yellow
+$testIPs = @("8.8.8.8", "1.1.1.1", "114.33.18.13")
+foreach ($testIP in $testIPs) {
+    try {
+        $ping = Test-Connection -ComputerName $testIP -Count 1 -Quiet
+        if ($ping) {
+            Write-Host "  ✅ $testIP - 連接正常" -ForegroundColor Green
+        } else {
+            Write-Host "  ❌ $testIP - 連接失敗" -ForegroundColor Red
+        }
+    } catch {
+        Write-Host "  ❌ $testIP - 連接失敗" -ForegroundColor Red
+    }
+}
+
+Write-Host ""
+Write-Host "=== 故障排除建議 ===" -ForegroundColor Green
+Write-Host "1. 如果顯示127.0.0.1，請檢查應用程式綁定設定" -ForegroundColor White
+Write-Host "2. 確保網路連接正常" -ForegroundColor White
+Write-Host "3. 檢查防火牆設定" -ForegroundColor White
+Write-Host "4. 確認VPN連接狀態" -ForegroundColor White