Fix: LLM provider validation for GitHub/DeepSeek keys, relax thresholds, and improve diagnostics

Nuclear Intelligence v2.0 - Complete free LLM upgrade

Fix: Import check in sync_huggingface.py

Fix: Python 3.13 compatibility, audioop issues, and env var alignment

Fix: Resolve runtime errors, dependency issues, and component inconsistencies.

Enhance AI Core, Virtual Ledger, and Operation Loop with professional architecture

Refactor project structure, integrate AI agent and blockchain, update Gradio app, and prepare for Hugging Face deployment.

Final deployment: Updated Dockerfile and added keep-alive script

Initial project setup: Core AI engine, Virtual Ledger, API, and automation scripts