优化前改动

bitmart/保守模式参数优化/四分之一，五分钟，反手条件充足_保守模式.py

@@ -142,6 +142,9 @@ class BitmartFuturesTransactionConservative:
         self.auto_optimize_stability_weight = float(os.getenv("BITMART_AUTO_OPT_STABILITY_WEIGHT", "0.6"))
         self.auto_optimize_stress_slippage = os.getenv("BITMART_AUTO_OPT_STRESS_SLIPPAGE", "0.8,1.0,1.2,1.4")
         self.auto_optimize_stress_fee = os.getenv("BITMART_AUTO_OPT_STRESS_FEE", "1.0,1.15,1.3")
+        self.auto_optimize_allow_method_fallback = os.getenv(
+            "BITMART_AUTO_OPT_ALLOW_METHOD_FALLBACK", "1"
+        ).strip().lower() not in {"0", "false", "off", "no"}
         self.auto_optimize_data_file = os.getenv("BITMART_AUTO_OPT_DATA_FILE", "").strip()
         self.auto_optimize_script_path = Path(__file__).with_name("optimize_params.py")
         self.auto_optimized_this_run = False
@@ -256,6 +259,20 @@ class BitmartFuturesTransactionConservative:
         output_path = self.get_runtime_params_path()
         output_path.parent.mkdir(parents=True, exist_ok=True)
 
+        method = str(self.auto_optimize_method).strip().lower() or "auto"
+        if method not in {"auto", "optuna", "random"}:
+            logger.warning(f"未知优化方法 {method}，自动改为 auto")
+            method = "auto"
+        if method == "optuna" and self.auto_optimize_allow_method_fallback:
+            try:
+                import optuna  # noqa: F401
+            except Exception:
+                logger.warning(
+                    "当前环境未安装 optuna，启动前优化自动降级为 random。"
+                    "如需 optuna，请执行: pip install optuna"
+                )
+                method = "random"
+
         cmd = [
             sys.executable,
             str(script_path),
@@ -272,7 +289,7 @@ class BitmartFuturesTransactionConservative:
             "--window-step-days",
             str(self.auto_optimize_window_step_days),
             "--method",
-            str(self.auto_optimize_method),
+            method,
             "--n-trials",
             str(self.auto_optimize_n_trials),
             "--valid-score-weight",