Building an autonomous AI trading agent for Alpaca's paper trading platform — a 3-model ML ensemble (Random Forest, XGBoost, LightGBM) generating BUY/HOLD/SELL signals from 35+ technical indicators and candlestick/Ichimoku patterns, with ATR-scaled risk gates and a defined-risk options sleeve for convex payoff. Backtested against 2.2 years of historical data with real diagnostic tuning. Not looking for teammates — building solo.