fix: dialog强制刷新(:key)+el-button去text属性+Props对齐

frontend/src/components/strategy-map/StrategyLayer.vue

@@ -58,14 +58,14 @@
       <!-- 空状态占位提示 -->
       <div v-if="objectives.length === 0" class="layer-empty">
         <el-empty description="暂无目标" :image-size="60">
-          <el-button text type="primary" size="small" @click="$emit('add-objective', layerKey)">
+          <el-button type="primary" size="small" @click="$emit('add-objective', layerKey)">
             点击 + 添加目标
           </el-button>
         </el-empty>
       </div>
 
       <!-- 底部添加按钮 -->
-      <el-button text type="primary" size="small" class="layer-add-btn" @click="$emit('add-objective', layerKey)">
+      <el-button type="primary" size="small" class="layer-add-btn" @click="$emit('add-objective', layerKey)">
         + 添加目标
       </el-button>
     </div>