Fix: Update AIMLAPI key and optimize thresholds for HF Spaces

feat: integrate AIMLAPI and optimize for HuggingFace Spaces

Fix: Adjust thresholds and fallback logic to enable minting on HF Spaces

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

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Nuclear Intelligence v4.0 - Full upgrade with 10 free LLM providers, enhanced UI, HF Space compatibility

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