优化banner逻辑

src/store/dictionaryStore.ts

@@ -14,6 +14,13 @@ interface DictionaryState {
   fetchDictionary: () => Promise<void>
   getDictionaryValue: (key: string, defaultValue?: any) => any
   clearDictionary: () => void
+  // banner 字典（单独管理，保持原始值）
+  bannerDict: {
+    bannerListImage: string
+    bannerDetailImage: string
+    bannerListIndex: string
+  } | null
+  fetchBannerDictionary: () => Promise<void>
 }
 
 // 创建字典Store
@@ -22,6 +29,7 @@ export const useDictionaryStore = create<DictionaryState>()((set, get) => ({
   dictionaryData: {},
   isLoading: false,
   error: null,
+  bannerDict: null,
 
   // 获取字典数据
   fetchDictionary: async () => {
@@ -56,6 +64,27 @@ export const useDictionaryStore = create<DictionaryState>()((set, get) => ({
     }
   },
 
+  // 获取 Banner 字典（启动时或手动调用）
+  fetchBannerDictionary: async () => {
+    try {
+      const keys = 'bannerListImage,bannerDetailImage,bannerListIndex';
+      const response = await commonApi.getDictionaryManyKey(keys)
+      if (response.code === 0 && response.data) {
+        const data = response.data || {};
+        set({
+          bannerDict: {
+            bannerListImage: data.bannerListImage || '',
+            bannerDetailImage: data.bannerDetailImage || '',
+            bannerListIndex: (data.bannerListIndex ?? '').toString(),
+          }
+        })
+      }
+    } catch (error) {
+      // 保持静默，避免影响启动流程
+      console.error('获取 Banner 字典失败:', error)
+    }
+  },
+
   // 获取字典值
   getDictionaryValue: (key: string, defaultValue?: any) => {
     const { dictionaryData } = get()