feat: 新增模型配置缓存层（60s TTL + 并发去重）

src/utils/modelApi.js

@@ -1,4 +1,4 @@
-import { fetchPlatformModels as fetchModelsRaw } from '@/apis/display'
+import { fetchPlatformModels as fetchModelsRaw, requestModelConfig, requestModelConfigsBatch } from '@/apis/display'
 
 const CACHE_PREFIX = 'platform_models_'
 const CACHE_TTL = 30 * 1000 // 30秒有效期
@@ -93,10 +93,89 @@ export async function getModelId(type, modelName) {
   const code = getPlatformCode(type)
   const models = await fetchPlatformModels(code)
 
-  const found = models.find(m => m.name === modelName || m.display_name === modelName)
+  const found = models.find((m) => m.name === modelName || m.display_name === modelName)
   return found?.id || ''
 }
 
+// ==================== 模型配置缓存 ====================
+
+const CONFIG_CACHE_PREFIX = 'model_config_'
+const CONFIG_CACHE_TTL = 60 * 1000 // 60 秒
+const pendingConfigRequests = new Map()
+
+/**
+ * 批量预加载模型配置到缓存
+ * @param {string[]} modelIds - 模型 UUID 列表
+ */
+export async function preloadModelConfigs(modelIds) {
+  if (!modelIds.length) return
+  const result = await requestModelConfigsBatch(modelIds)
+  const data = result?.data || {}
+  const now = Date.now()
+  modelIds.forEach((id) => {
+    const config = data[id]
+    if (config) {
+      const cacheEntry = { config, timestamp: now }
+      try {
+        localStorage.setItem(CONFIG_CACHE_PREFIX + id, JSON.stringify(cacheEntry))
+      } catch {
+        // localStorage 满时静默失败
+      }
+    }
+  })
+}
+
+/**
+ * 获取单个模型配置（优先读缓存，未命中调 API）
+ * @param {string} modelId - 模型 UUID
+ * @returns {Promise<object | null>} 模型配置对象
+ */
+export async function getModelConfig(modelId) {
+  if (!modelId) return null
+
+  // 1. 读缓存
+  try {
+    const cached = localStorage.getItem(CONFIG_CACHE_PREFIX + modelId)
+    if (cached) {
+      const { config, timestamp } = JSON.parse(cached)
+      if (Date.now() - timestamp < CONFIG_CACHE_TTL) {
+        return config
+      }
+    }
+  } catch {
+    // 缓存解析失败，走 API
+  }
+
+  // 2. 并发去重
+  if (pendingConfigRequests.has(modelId)) {
+    return pendingConfigRequests.get(modelId)
+  }
+
+  // 3. 调单条 API
+  const promise = (async () => {
+    try {
+      const result = await requestModelConfig(modelId)
+      const config = result?.data
+      if (config) {
+        const cacheEntry = { config, timestamp: Date.now() }
+        try {
+          localStorage.setItem(CONFIG_CACHE_PREFIX + modelId, JSON.stringify(cacheEntry))
+        } catch {
+          // 静默
+        }
+      }
+      return config || null
+    } catch {
+      return null
+    } finally {
+      pendingConfigRequests.delete(modelId)
+    }
+  })()
+
+  pendingConfigRequests.set(modelId, promise)
+  return promise
+}
+
 // 清除所有平台模型缓存
 export function clearPlatformModelCache() {
   const keysToRemove = []
@@ -106,5 +185,5 @@ export function clearPlatformModelCache() {
       keysToRemove.push(key)
     }
   }
-  keysToRemove.forEach(key => localStorage.removeItem(key))
+  keysToRemove.forEach((key) => localStorage.removeItem(key))
 }