Feat: 烟花时长延长至10秒，发射数量增至12枚

public/js/effects/fireworks.js

@@ -237,13 +237,13 @@ const FireworksEffect = (() => {
         const ctx = canvas.getContext("2d");
         const w = canvas.width;
         const h = canvas.height;
-        const DURATION = 6000;
+        const DURATION = 10000;
 
         let rockets = [];
         let particles = [];
         let animId = null;
         let launchCnt = 0;
-        const MAX_LAUNCHES = 8;
+        const MAX_LAUNCHES = 12;
 
         // 定时发射火箭
         const launchInterval = setInterval(() => {