feat 搭建架构骨架

src/utils/storage.ts

@@ -0,0 +1,34 @@
+// localStorage/sessionStorage 泛型封装（无 Vue 依赖）
+
+const PREFIX = 'cz:'
+
+function parse<T>(raw: string | null): T | null {
+  if (raw === null) return null
+  try {
+    return JSON.parse(raw) as T
+  }
+  catch {
+    return null
+  }
+}
+
+export const storage = {
+  get<T>(key: string): T | null {
+    return parse<T>(localStorage.getItem(PREFIX + key))
+  },
+  set<T>(key: string, value: T): void {
+    localStorage.setItem(PREFIX + key, JSON.stringify(value))
+  },
+  remove(key: string): void {
+    localStorage.removeItem(PREFIX + key)
+  },
+  sessionGet<T>(key: string): T | null {
+    return parse<T>(sessionStorage.getItem(PREFIX + key))
+  },
+  sessionSet<T>(key: string, value: T): void {
+    sessionStorage.setItem(PREFIX + key, JSON.stringify(value))
+  },
+  sessionRemove(key: string): void {
+    sessionStorage.removeItem(PREFIX + key)
+  },
+}