feat: Enhance interactivity of Gradio interface and improve handling of empty response in PrecedentAnalysisWorkflow

feat: Improve user feedback during legal position generation with loading message and button interactivity

feat: Enhance save button interactivity in Gradio interface for prompt changes

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

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

Fix input detection: prioritize URL input even when method state is incorrect

Fix validation logic: allow processing when URL is provided, show error only when empty

Fix input validation: add specific error messages for empty URL and text inputs

Clean deployment without large index files