Support accessing Azure AI V1 API without api-version

[thekid]

This pull request makes supplying an api-version (either through the constructor parameter or inside the endpoint URI) optional. This adds support for the Azure AI V1 API.

TL;DR (as per the linked medium article):

No api-version needed.
Just use the /openai/v1 endpoint and your deployment name.

Example

use com\openai\rest\AzureAIEndpoint;
use util\cmd\Console;

// Using V1 API
$ai= new AzureAIEndpoint('https://'.getenv('AZUREAI_API_KEY').'@example.openai.azure.com/openai/v1');

// Using API version
$ai= new AzureAIEndpoint(
  'https://'.getenv('AZUREAI_API_KEY').'@example.openai.azure.com/openai/deployments/gpt-5.2',
  '2025-04-01-preview'
);

Console::writeLine($ai->api('/responses')->invoke([
  'model' => 'gpt-5.2',
  'input' => $prompt,
]));

See also

• https://learn.microsoft.com/en-us/azure/ai-foundry/openai/api-version-lifecycle#api-evolution
• https://medium.com/@boopathisarvesan/azure-openai-demystifying-model-versions-api-versions-the-new-v1-spec-37ddffd1a15b

[thekid]

Released in https://github.com/xp-forge/openai/releases/tag/v0.12.0