v2.2.1: frontend closed-source + Docker one-click deploy

- Remove frontend source code (now in private repo)
- Add pre-built frontend/dist/ with Nginx serving
- Simplify docker-compose.yml (no Node.js build needed)
- Update README with docs index and Docker deploy guide
- Add admin order list and AI analysis stats tabs
- Add quick trade API routes
- Clean up redundant files (package-lock.json, yarn.lock, .iml)
- Add GitHub Actions workflow for frontend update automation

backend_api_python/app/services/exchange_execution.py

@@ -61,7 +61,7 @@ def load_strategy_configs(strategy_id: int) -> Dict[str, Any]:
         cur = db.cursor()
         cur.execute(
             """
-            SELECT id, exchange_config, trading_config, market_type, leverage, execution_mode, market_category
+            SELECT id, user_id, exchange_config, trading_config, market_type, leverage, execution_mode, market_category
             FROM qd_strategies_trading
             WHERE id = %s
             """,
@@ -77,9 +77,11 @@ def load_strategy_configs(strategy_id: int) -> Dict[str, Any]:
     leverage = float(row.get("leverage") or trading_config.get("leverage") or exchange_config.get("leverage") or 1.0)
     execution_mode = (row.get("execution_mode") or "signal").strip().lower()
     market_category = (row.get("market_category") or "Crypto").strip()
+    user_id = int(row.get("user_id") or 1)
 
     return {
         "strategy_id": int(strategy_id),
+        "user_id": user_id,
         "exchange_config": exchange_config if isinstance(exchange_config, dict) else {},
         "trading_config": trading_config if isinstance(trading_config, dict) else {},
         "market_type": market_type,