Fix auto-training and add dynamic MVP/Championship predictions

Fix: Use pts field instead of ppg in fallback data to match frontend

Perf: Lightning-fast caching - startup warming, cached rosters, fast fallbacks

Fix: Use real NBA API for starting 5 lineups instead of hardcoded data

Debug: Add logging to diagnose api_data path issue on HF Spaces

Fix: Enhanced prediction algorithm for accurate, varied probabilities - Uses multi-factor Log5 formula with current season standings (40%), recent form (30%), ELO (20%), injury impact, and home court advantage - Replaces fixed 64/36% predictions with realistic varied percentages

Smart training after games complete + MVP retry with 60s timeout

Initial commit: NBA Sage Predictor for Hugging Face Spaces (with LFS for large files)