Resolve stash pop conflicts in modelicaExporter.js with camelCase instance names

src/utils/modelicaExporter.js

@@ -87,6 +87,7 @@ export function exportToModelica(data, modelName = 'Circuit') {
     }
   });
   const usedPackages = new Set();
+  
   // 占位 — 后续回填 import 语句
   const importInsertIdx = lines.length;
 
@@ -95,7 +96,7 @@ export function exportToModelica(data, modelName = 'Circuit') {
   nodes.forEach((node, idx) => {
     const td = node.data?.templateData;
     const type = td?.type;
-    const label = node.data?.label || `comp_${idx}`;
+    const label = node.data?.label || '';
 
     const mapping = getModelMapping(type);
 
@@ -104,8 +105,11 @@ export function exportToModelica(data, modelName = 'Circuit') {
     if (mapping && mapping.modelName) {
       baseName = mapping.modelName.charAt(0).toLowerCase() + mapping.modelName.slice(1);
     } else {
-      baseName = toMoId(label);
+      const safeLabel = label || (type || 'comp');
+      baseName = safeLabel.replace(/[-_]([a-zA-Z])/g, (_, c) => c.toUpperCase());
+      baseName = toMoId(baseName); // Enforce valid Mo ID
     }
+
     // 按 baseName 分组计数，生成唯一序号
     if (!instanceCounter[baseName]) instanceCounter[baseName] = 0;
     instanceCounter[baseName]++;
@@ -193,6 +197,7 @@ export function exportToModelica(data, modelName = 'Circuit') {
 
   // 插入组件声明
   declLines.forEach(l => lines.push(l));
+
   lines.push('');
 
   // ===== 2. 构建流程节点端口到连接源的映射 =====