feat: complete BTC ML trading strategy optimizer

Multi-machine optimization loop:
- VPS orchestrator coordinates training and LLM analysis
- Windows PC (RTX 4070 Ti) runs XGBoost/LightGBM/CatBoost with GPU
- Mac Mini runs qwen3.5:27b via Ollama for strategy analysis

Includes 60+ technical features, walk-forward validation,
confidence-scaled position sizing, and automated convergence detection.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

config/initial_config.json

@@ -0,0 +1,59 @@
+{
+  "model_type": "xgboost",
+  "features": {
+    "technical_indicators": [
+      "RSI_14", "RSI_7", "RSI_21",
+      "MACD_line", "MACD_signal", "MACD_hist",
+      "BB_upper", "BB_lower", "BB_width",
+      "ATR_14",
+      "SMA_5", "SMA_10", "SMA_20", "SMA_50", "SMA_200",
+      "EMA_5", "EMA_10", "EMA_20", "EMA_50",
+      "OBV",
+      "stoch_k", "stoch_d",
+      "williams_r",
+      "CCI_20",
+      "ROC_10",
+      "keltner_upper", "keltner_lower"
+    ],
+    "lookback_periods": [3, 5, 10, 20],
+    "use_volume_features": true,
+    "use_volatility_features": true,
+    "use_candle_patterns": true,
+    "use_lag_features": true,
+    "lag_periods": [1, 2, 3, 5]
+  },
+  "target": {
+    "type": "classification",
+    "direction": "long",
+    "horizon_candles": 6,
+    "threshold_pct": 1.0
+  },
+  "hyperparameters": {
+    "learning_rate": 0.05,
+    "max_depth": 6,
+    "n_estimators": 500,
+    "subsample": 0.8,
+    "colsample_bytree": 0.8,
+    "min_child_weight": 5,
+    "gamma": 0.1,
+    "reg_alpha": 0.1,
+    "reg_lambda": 1.0
+  },
+  "strategy": {
+    "entry_threshold": 0.60,
+    "exit_type": "trailing_stop",
+    "stop_loss_pct": 2.0,
+    "take_profit_pct": 4.0,
+    "trailing_stop_pct": 1.5,
+    "position_sizing": "confidence_scaled",
+    "max_position_pct": 100,
+    "min_confidence_to_trade": 0.55
+  },
+  "training": {
+    "walk_forward_windows": 5,
+    "train_pct": 0.7,
+    "validation_pct": 0.15,
+    "test_pct": 0.15
+  },
+  "timeframe": "4h"
+}