feat: Add Phase 4 advanced metrics and components

- Add advanced metrics dashboard with trade analytics
- Add new trading components (EntryTypeAnalysis, MultiDayPositionTracker, NewsEventTracker, etc.)
- Add strategy mode selector and trend confirmation
- Add risk automation panel and slippage correlation analysis
- Add daily trading plan enhancements with modal components
- Add custom hooks (useApi, useLocalStorage, useAdvancedTradeMetrics)
- Add broker service integration and trading API
- Add test setup and vitest configuration
- Include parquet data files for live market data
- Add comprehensive documentation in docs/ folder

backend/app/services/simulation_state.py

@@ -0,0 +1,27 @@
+"""Helpers for loading the latest trading simulation snapshot from the database."""
+from typing import Any, Dict
+
+from sqlalchemy.orm import Session
+
+from app.api.trading_persistent import get_or_create_simulation, get_portfolio_state_from_db
+
+
+def load_simulation_state(db: Session, user_id: str = "default") -> Dict[str, Any]:
+    """Return the current simulation state as a serializable dict."""
+    try:
+        simulation = get_or_create_simulation(db, user_id)
+        portfolio = get_portfolio_state_from_db(simulation, db)
+        return portfolio.dict()
+    except Exception as e:
+        # If database tables don't exist, return default state
+        print(f"Warning: Could not load simulation state: {e}")
+        return {
+            "cash": 100000.0,
+            "position": None,
+            "trades": [],
+            "total_pnl": 0.0,
+            "win_rate": 0.0,
+            "avg_win": 0.0,
+            "avg_loss": 0.0,
+            "trade_count": 0
+        }