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

Add diagnostic logging and raw httpx connectivity test for OpenAI API

Disable HTTP/2 in httpx client for OpenAI and DeepSeek to avoid 421 Misdirected Request errors and ensure consistent connections in HF Spaces

Refactor httpx client usage for OpenAI and DeepSeek: implement context management to prevent socket leaks and improve error logging

Fix OpenAI/DeepSeek HF Spaces connectivity: use custom httpx.Client to handle asyncio conflicts

Enhance API key debugging: add length and prefix display for OPENAI_API_KEY; update provider availability checks to use os.getenv for real-time state

Enhance provider management: normalize response keys, add availability checks, and improve Gradio interface for AI providers

Revert httpx.Client customization: use default OpenAI SDK settings for async compatibility in HF Spaces

Fix persistent Connection Errors for OpenAI/DeepSeek: disable HTTP/2 and use robust httpx client

Fix Connection error for OpenAI and DeepSeek: add retry logic and increase timeout to 120s

Improve DeepSeek compatibility (R1/reasoner support) and fix lint errors in main.py

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

Add JSON extraction utility and enhance analysis methods for better error handling

Add placeholders for court decision text and comment in legal position prompt

Clean deployment without large index files