fix(类型处理): 将ChunkListItem的vector字段改为可选并移除handler中的vector字段

在列表查询时移除vector字段以减少数据传输量，同时将类型定义中的vector改为可选以匹配实际使用场景

src/main/ipc/handlers.ts

@@ -277,7 +277,12 @@ export function registerHandlers(services: {
       try {
         const { keyword, page, pageSize } = payload
         const res = await unifiedStore.listChunks({ keyword, page, pageSize })
-        return res
+        const normalized = res.items.map((item) => {
+          const newItem = { ...item }
+          delete (newItem as any).vector
+          return newItem
+        })
+        return { items: normalized, total: res.total }
       } catch (error: any) {
         console.error('❌ [LIST-CHUNKS] ERROR:', error)
         return { items: [], total: 0 }

src/shared/types.ts

@@ -41,7 +41,7 @@ export interface ChunkListItem {
     page: number
   }
   createdAt?: number
-  vector: number[]
+  vector?: number[]
 }
 
 export interface ChunkListResponse {