env('QUESTION_BANK_API_BASE', 'http://localhost:5015'), 'timeout' => (int) env('QUESTION_BANK_TIMEOUT', 10), 'cache_ttl' => (int) env('QUESTION_BANK_CACHE_SECONDS', 300), 'retry_attempts' => (int) env('QUESTION_BANK_RETRY_ATTEMPTS', 2), 'retry_delay' => (int) env('QUESTION_BANK_RETRY_DELAY', 200), ];