<?php
/**
 * 大模型（OpenAI 兼容接口，如 DeepSeek / 通义等）
 *
 * .env 示例：
 * [ai]
 * ENABLE = true
 * BASE_URL = "https://api.deepseek.com"
 * API_KEY = "sk-xxx"
 * MODEL = "deepseek-chat"
 */
return [
    'enable'   => filter_var(env('ai.ENABLE', env('ai.enable', false)), FILTER_VALIDATE_BOOLEAN),
    'base_url' => rtrim((string) env('ai.BASE_URL', env('ai.base_url', 'https://api.deepseek.com')), '/'),
    'api_key'  => (string) env('ai.API_KEY', env('ai.api_key', '')),
    'model'    => (string) env('ai.MODEL', env('ai.model', 'deepseek-chat')),
    'timeout'  => (int) env('ai.TIMEOUT', env('ai.timeout', 60)),
];