fix: 风险平价策略优化：1. 股票代码输入框禁用，从策略配置自动填充；2. 提交时校验权重偏差不超过5%；3. 修复股票列表渲染问题

pages/config/config.vue

@@ -55,6 +55,7 @@
                 class="mini-input" 
                 v-model="item.name" 
                 placeholder="如 TMF" 
+                :disabled="selectedStrategy?.type === 'risk_parity'"
                 @input="(e) => searchStock(e.detail.value, index)"
                 @focus="() => { activeSearchIndex.value = -1; searchResults.value = []; }"
               />
@@ -235,6 +236,41 @@ const submitForm = async () => {
   if (strategyIndex.value === -1) return uni.showToast({ title: '请选择策略', icon: 'none' });
 
   const selected = strategies.value[strategyIndex.value];
+
+  // 风险平价策略权重校验
+  if (selected.type === 'risk_parity' && selected.parameters?.assets) {
+    let totalWeight = 0;
+    const targetAssets = selected.parameters.assets;
+    
+    for (let i = 0; i < form.value.stocks.length; i++) {
+      const stock = form.value.stocks[i];
+      const target = targetAssets.find(a => a.symbol === stock.name);
+      if (!target) continue;
+      
+      // 计算实际持仓市值 = 价格 * 数量
+      const marketValue = (parseFloat(stock.price) || 0) * (parseFloat(stock.amount) || 0);
+      totalWeight += marketValue;
+    }
+    
+    // 校验每个标的的实际权重和目标权重偏差不超过5%
+    for (let i = 0; i < form.value.stocks.length; i++) {
+      const stock = form.value.stocks[i];
+      const target = targetAssets.find(a => a.symbol === stock.name);
+      if (!target) continue;
+      
+      const marketValue = (parseFloat(stock.price) || 0) * (parseFloat(stock.amount) || 0);
+      const actualWeight = totalWeight > 0 ? marketValue / totalWeight : 0;
+      const deviation = Math.abs(actualWeight - target.targetWeight);
+      
+      if (deviation > 0.05) {
+        return uni.showToast({ 
+          title: `${stock.name} 权重偏差超过5%，目标${(target.targetWeight*100).toFixed(0)}%，实际${(actualWeight*100).toFixed(0)}%`, 
+          icon: 'none',
+          duration: 3000
+        });
+      }
+    }
+  }
   
   const requestData = {
     name: form.value.name,