feat: Add debug prompt logging functionality with environment variable support

feat: Оновлення UI для GPT-5.2 та додавання контролю MaxTokens

feat: Інтеграція GPT-5.2 з підтримкою reasoning

Fix OpenAI gpt-4.1 API parameters: role 'developer', max_completion_tokens, and reasoning effort support; update max_tokens in default config

Increase max_tokens for all models in generation settings to enhance response capacity

Increase max_tokens for generation settings and enhance JSON extraction to handle various markdown formats

Clean deployment without large index files