- Add _compute_whale_public_picks() to reconstruct whale/public picks from historical bets
- Merge whale_pick, public_pick, whale_hit, public_hit into last_20_predictions
- Add get_prediction_history(limit) for lightweight prediction+accuracy data
- Add /api/prediction-history endpoint (default 100, max 500)
- Add Whale and Public columns with HIT/MISS to Last 20 table in frontend
Bayesian next-chair predictor (Markov chains, base rate, streak regression),
statistical tests (chi-squared, runs test, autocorrelation), theory
backtesting with rolling accuracy, and card-level analysis (value/suit
distribution, face card frequency, top winning cards).
New /patterns page with 9 analyses: chair win bias, bet rank
correlations, hand type distributions, pot size buckets, streaks,
hourly patterns, and recent-vs-overall comparison. Also adds a
standalone analyze.py CLI script for terminal output.
