fix: 恢复 Codex 动态端点测试

- base_url: 恢复动态测试 api2.xcodecli.com 和 api.xcodecli.com
- model: 恢复为 gpt-5.1-codex
- 保留其他新配置项 (disable_response_storage, requires_openai_auth 等)
- 保留 XCODECLI_OAI_KEY 环境变量

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

codex/setup-codex.ps1

@@ -14,6 +14,7 @@ param(
 if (-not $ApiKey -and (Test-Path Variable:key)) { $ApiKey = $key }
 
 # Configuration
+$DefaultBaseUrl = "https://api2.xcodecli.com"
 $CodexConfigDir = "$env:USERPROFILE\.codex"
 $CodexConfigFile = "$CodexConfigDir\config.toml"
 
@@ -127,31 +128,74 @@ function Test-ApiKey {
     }
 }
 
+# Function to test API connection and return working base URL
+function Test-ApiConnection {
+    param([string]$ApiKey)
+
+    $testUrls = @(
+        "https://api2.xcodecli.com",
+        "https://api.xcodecli.com"
+    )
+
+    Write-Info "Testing API connections..."
+
+    foreach ($baseUrl in $testUrls) {
+        Write-Info "Testing $baseUrl..."
+
+        try {
+            $headers = @{
+                "Content-Type" = "application/json"
+                "Authorization" = "Bearer $ApiKey"
+            }
+
+            $testEndpoint = "$baseUrl/v1/models"
+            $response = Invoke-RestMethod -Uri $testEndpoint -Method Get -Headers $headers -ErrorAction Stop
+
+            if ($response.data) {
+                $modelCount = $response.data.Count
+                Write-Success "API connection successful! Found $modelCount models at $baseUrl"
+                return $baseUrl
+            } else {
+                Write-Warning "API responded but no models found at $baseUrl"
+            }
+        }
+        catch {
+            if ($_.Exception.Response -and $_.Exception.Response.StatusCode -eq 401) {
+                Write-Warning "API key authentication failed for $baseUrl"
+            } elseif ($_.Exception.Message -like "*Unable to connect*" -or $_.Exception.Message -like "*could not be resolved*") {
+                Write-Warning "Cannot connect to $baseUrl"
+            } else {
+                Write-Warning "API test failed for $baseUrl`: $($_.Exception.Message)"
+            }
+        }
+    }
+
+    Write-Error "All API connections failed. Please check your API key and internet connection."
+    return $null
+}
+
 # Function to create Codex configuration
 function New-Settings {
     param(
+        [string]$BaseUrl,
         [string]$ApiKey
     )
 
     $config = @"
 model_provider = "xcodecli"
-model = "gpt-5-codex"
+model = "gpt-5.1-codex"
 model_reasoning_effort = "high"
 disable_response_storage = true
 preferred_auth_method = "apikey"
 
 [model_providers.xcodecli]
 name = "xcodecli"
-base_url = "https://www.xcodecli.com/openai"
+base_url = "$BaseUrl/v1"
 wire_api = "responses"
 requires_openai_auth = true
 env_key = "XCODECLI_OAI_KEY"
 "@
 
-    $authJson = @{
-        OPENAI_API_KEY = $null
-    }
-
     try {
         Set-Content -Path $CodexConfigFile -Value $config -Encoding UTF8
         Write-Success "Codex configuration written to: $CodexConfigFile"
@@ -258,34 +302,24 @@ function Main {
     Write-Info "API Key: $maskedKey"
     Write-Host ""
 
-    # Test API connection with fixed URL
-    $testUrl = "https://www.xcodecli.com/openai"
-    Write-Info "Testing API connection to $testUrl..."
-
-    try {
-        $headers = @{
-            "Content-Type" = "application/json"
-            "Authorization" = "Bearer $ApiKey"
-        }
-        $response = Invoke-RestMethod -Uri "$testUrl/models" -Method Get -Headers $headers -ErrorAction Stop
-        Write-Success "API connection successful!"
-    }
-    catch {
-        if ($_.Exception.Response -and $_.Exception.Response.StatusCode -eq 401) {
-            Write-Warning "API key authentication failed"
-        } else {
-            Write-Warning "API test failed: $($_.Exception.Message)"
-        }
+    # Test API connection and get working base URL
+    $BaseUrl = Test-ApiConnection -ApiKey $ApiKey
 
+    if (-not $BaseUrl) {
         if ($Test) {
             exit 1
         }
 
-        $continue = Read-Host "Continue anyway? (y/N)"
+        $continue = Read-Host "All API tests failed. Continue anyway? (y/N)"
         if ($continue -notmatch '^[Yy]$') {
             Write-Info "Setup cancelled"
             exit 1
         }
+
+        $BaseUrl = $DefaultBaseUrl
+        Write-Warning "Using default URL: $BaseUrl"
+    } else {
+        Write-Info "Selected working base URL: $BaseUrl"
     }
 
     # Exit if test only
@@ -301,7 +335,7 @@ function Main {
     Backup-Settings
 
     # Create new settings
-    if (New-Settings -ApiKey $ApiKey) {
+    if (New-Settings -BaseUrl $BaseUrl -ApiKey $ApiKey) {
         Write-Host ""
         Write-Success "Codex has been configured successfully!"
         Write-Info "You can now use Codex with your XCodeCLI API router."