fix: 调整友方技能特效位置和动画轨迹

- 修正buff.prefab的缩放和透明度，提升视觉效果
- 调整sbox.prefab中多个UI元素的位置和对齐方式
- 简化友方技能特效动画为直线运动，移除贝塞尔曲线计算
- 为技能特效添加高度偏移，避免与角色模型重叠

assets/resources/game/skill/buff/buff.prefab

@@ -99,8 +99,8 @@
     },
     "_lscale": {
       "__type__": "cc.Vec3",
-      "x": 0.5,
-      "y": 0.5,
+      "x": 0.7,
+      "y": 0.7,
       "z": 1
     },
     "_mobility": 0,
@@ -161,7 +161,7 @@
       "r": 255,
       "g": 255,
       "b": 255,
-      "a": 206
+      "a": 255
     },
     "_spriteFrame": {
       "__uuid__": "cb93c900-b440-4571-91d1-7da1636e3d73@ce362",

assets/resources/gui/element/sbox.prefab

@@ -105,7 +105,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 0,
-      "y": 0,
+      "y": 40,
       "z": 0
     },
     "_lrot": {
@@ -287,7 +287,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 0,
-      "y": 0,
+      "y": 40,
       "z": 0
     },
     "_lrot": {
@@ -623,7 +623,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 0,
-      "y": 0,
+      "y": 40,
       "z": 0
     },
     "_lrot": {
@@ -798,7 +798,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 0,
-      "y": 0,
+      "y": 40,
       "z": 0
     },
     "_lrot": {
@@ -973,7 +973,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 0,
-      "y": 0,
+      "y": 40,
       "z": 0
     },
     "_lrot": {
@@ -1145,7 +1145,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 0,
-      "y": -35.658,
+      "y": 6.375,
       "z": 0
     },
     "_lrot": {
@@ -1300,7 +1300,7 @@
     "_anchorPoint": {
       "__type__": "cc.Vec2",
       "x": 0.5,
-      "y": 0.5
+      "y": 0
     },
     "_id": ""
   },