refactor(screen): 优化区域选项缓存逻辑

- 修改 setCachedRegionOption 函数，添加 cacheKey 参数支持
- 将缓存键从固定值改为动态传入的 cacheKey
- 添加 globalRegionMap 用于存储全局区域映射
- 实现区域数据按 region_id 分组并缓存到对应键值
- 更新函数调用传递 CACHE_KEY 作为缓存键参数

src/views/screen/mainScreen.vue

@@ -246,7 +246,7 @@ const getCachedRegionOption = (): CacheData | null => {
   return null
 }
 
-const setCachedRegionOption = (regionOption: RegionItem[], campus_id: string) => {
+const setCachedRegionOption = (regionOption: RegionItem[], campus_id: string, cacheKey: string) => {
   try {
     const cacheData: CacheData = {
       regionOption,
@@ -256,7 +256,7 @@ const setCachedRegionOption = (regionOption: RegionItem[], campus_id: string) =>
       data: cacheData,
       timestamp: Date.now()
     }
-    sessionStorage.setItem(CACHE_KEY, JSON.stringify(cache))
+    sessionStorage.setItem(cacheKey, JSON.stringify(cache))
     console.log('regionOption 数据已缓存')
   } catch (error) {
     console.error('保存缓存失败:', error)
@@ -318,6 +318,7 @@ onMounted(async () => {
 
         // 将园区信息去重
         const parkMap = new Map();
+        const globalRegionMap = new Map();
         records.forEach(el => {
           if (!parkMap.has(el.park_code)) {
             parkMap.set(el.park_code, {
@@ -325,12 +326,24 @@ onMounted(async () => {
               code: el.park_code
             })
           }
+          if (globalRegionMap.has(el.region_id)) {
+            globalRegionMap.get(el.region_id).push({name: el.park_name, code: el.park_code})
+          }else {
+            let regionValues = [{name: el.park_name, code: el.park_code}]
+            globalRegionMap.set(el.region_id, regionValues)
+          }
         })
+        for(let [region_id, regionValues] of globalRegionMap) {
+          let campus_ids = regionValues.map(e1 => e1.code).join();
+          setCachedRegionOption(regionValues, campus_ids, region_id)
+        }
+
         // 将parkMap转换为数组
         query.campus_id = Array.from(parkMap.values()).map(e1 => e1.code).join();
 
         // 保存到缓存
-        setCachedRegionOption(regionOption.value, query.campus_id)
+        setCachedRegionOption(regionOption.value, query.campus_id, CACHE_KEY)
+
 
       }
     } catch (error) {