feat:添加登录功能

apps/frontend/src/stores/auth.ts

@@ -1,5 +1,7 @@
 import { defineStore } from 'pinia';
 
+const STORAGE_KEY = 'ai-bill/auth-session';
+
 type AuthStatus = 'authenticated' | 'guest';
 
 interface UserProfile {
@@ -30,12 +32,47 @@ export const useAuthStore = defineStore('auth', {
       this.accessToken = tokens.accessToken;
       this.refreshToken = tokens.refreshToken;
       this.profile = profile;
+      if (typeof window !== 'undefined') {
+        localStorage.setItem(
+          STORAGE_KEY,
+          JSON.stringify({
+            status: 'authenticated',
+            accessToken: tokens.accessToken,
+            refreshToken: tokens.refreshToken,
+            profile
+          })
+        );
+      }
     },
     clearSession() {
       this.status = 'guest';
       this.accessToken = undefined;
       this.refreshToken = undefined;
       this.profile = undefined;
+      if (typeof window !== 'undefined') {
+        localStorage.removeItem(STORAGE_KEY);
+      }
+    },
+    initialize() {
+      if (typeof window === 'undefined') {
+        return;
+      }
+      const raw = localStorage.getItem(STORAGE_KEY);
+      if (!raw) {
+        return;
+      }
+      try {
+        const stored = JSON.parse(raw) as { status: AuthStatus; accessToken: string; refreshToken: string; profile: UserProfile };
+        if (stored.status === 'authenticated' && stored.accessToken && stored.refreshToken && stored.profile) {
+          this.status = stored.status;
+          this.accessToken = stored.accessToken;
+          this.refreshToken = stored.refreshToken;
+          this.profile = stored.profile;
+        }
+      } catch (error) {
+        console.warn('Failed to restore auth session', error);
+        localStorage.removeItem(STORAGE_KEY);
+      }
     }
   }
 });