feat(backend): 新增 QuickJS 运行时支持 JavaScript 执行器

refactor(backend): 重构 script_js 执行器实现 JavaScript 文件/内联脚本执行
feat(backend): 变量节点支持表达式/引用快捷语法输入
docs: 添加变量节点使用文档说明快捷语法功能
style(frontend): 调整测试面板样式和布局
fix(frontend): 修复测试面板打开时自动关闭节点编辑侧栏
build(backend): 添加 rquickjs 依赖用于 JavaScript 执行

frontend/src/flows/components/testrun/testrun-panel/index.module.less

@@ -27,8 +27,8 @@
   }
 
   .code-editor-container {
-    min-height: 200px;
-    max-height: 400px;
+    min-height: 240px;
+    max-height: 520px;
     background: #fff;
     padding: 8px 8px 8px 4px;
     border-radius: 4px;
@@ -40,13 +40,13 @@
     }
 
     :global(.cm-scroller) {
-      min-height: 200px !important;
-      max-height: 400px !important;
+      min-height: 240px !important;
+      max-height: 520px !important;
     }
 
     :global(.cm-content) {
-      min-height: 200px !important;
-      max-height: 400px !important;
+      min-height: 240px !important;
+      max-height: 520px !important;
     }
   }
 }
@@ -67,9 +67,10 @@
 
 .button {
   border-radius: 8px;
-  width: 358px;
+  width: 100%;
   height: 40px;
-  margin: 16px;
+  margin: 0;
+  box-sizing: border-box;
 
   &.running {
     background-color: rgba(87, 104, 161, 0.08) !important; // override semi style
@@ -93,6 +94,7 @@
   display: flex;
   flex-direction: column;
   overflow: hidden;
+  position: relative;
 
   .testrun-panel-header {
     background: var(#fcfcff);
@@ -129,11 +131,15 @@
 
   .testrun-panel-footer {
     border-top: 1px solid rgba(82, 100, 154, 0.13);
-    height: 40px;
-    position: fixed;
+    position: absolute;
     background: #fbfbfb;
     height: 72px;
-    bottom: 16px;
+    left: 0;
+    right: 0;
+    bottom: 0;
     border-radius: 0 0 8px 8px;
+    padding: 8px 16px;
+    display: flex;
+    align-items: center;
   }
 }