feat: add dynamic tip update methods to GasFeeStrategy

- Add update_buy_tip() method to dynamically update buy tip while keeping other parameters unchanged
- Add update_sell_tip() method to dynamically update sell tip while keeping other parameters unchanged
- Enable simple one-line tip updates for all configured SWQOS providers
- Support percentage-based dynamic tip calculation in trading bots

src/common/gas_fee_strategy.rs

@@ -317,6 +317,34 @@ impl GasFeeStrategy {
         self.strategies.store(Arc::new(HashMap::new()));
     }
 
+    /// 动态更新买入小费（保持其他参数不变）
+    /// Dynamically update buy tip (keep other parameters unchanged)
+    pub fn update_buy_tip(&self, buy_tip: f64) {
+        self.strategies.rcu(|current_map| {
+            let mut new_map = (**current_map).clone();
+            for ((swqos_type, trade_type, strategy_type), value) in new_map.iter_mut() {
+                if *trade_type == TradeType::Buy {
+                    value.tip = buy_tip;
+                }
+            }
+            Arc::new(new_map)
+        });
+    }
+
+    /// 动态更新卖出小费（保持其他参数不变）
+    /// Dynamically update sell tip (keep other parameters unchanged)
+    pub fn update_sell_tip(&self, sell_tip: f64) {
+        self.strategies.rcu(|current_map| {
+            let mut new_map = (**current_map).clone();
+            for ((swqos_type, trade_type, strategy_type), value) in new_map.iter_mut() {
+                if *trade_type == TradeType::Sell {
+                    value.tip = sell_tip;
+                }
+            }
+            Arc::new(new_map)
+        });
+    }
+
     /// 打印所有策略。
     /// Print all strategies
     pub fn print_all_strategies(&self) {