fix(plugins): close R2 workspace gaps

src/pages/Login/index.tsx

@@ -1,5 +1,5 @@
 import { useCallback, useEffect, useRef, useState, type FormEvent } from 'react';
-import { useNavigate } from 'react-router-dom';
+import { useLocation, useNavigate } from 'react-router-dom';
 import { Loader2, RefreshCw } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
@@ -15,6 +15,7 @@ const LOGIN_ERROR_MESSAGE = '登录失败，请稍后重试。';
 const CAPTCHA_ERROR_MESSAGE = '图形验证码加载失败，请重试。';
 const SMS_ERROR_MESSAGE = '验证码发送失败，请稍后重试。';
 const PHONE_PATTERN = /^1\d{10}$/;
+const DEFAULT_LOGIN_RETURN_PATH = '/module-select';
 
 type LoginMode = 'password' | 'mobile';
 
@@ -101,8 +102,21 @@ function getLoginErrorMessage(error: string | null): string | null {
   return /[\u3400-\u9fff]/.test(message) ? message : LOGIN_ERROR_MESSAGE;
 }
 
+function getSafeLoginReturnPath(state: unknown): string {
+  if (!state || typeof state !== 'object') return DEFAULT_LOGIN_RETURN_PATH;
+  const value = Reflect.get(state, 'from');
+  return typeof value === 'string'
+    && value.startsWith('/')
+    && value[1] !== '/'
+    && value[1] !== '\\'
+    ? value
+    : DEFAULT_LOGIN_RETURN_PATH;
+}
+
 export function Login() {
   const navigate = useNavigate();
+  const location = useLocation();
+  const returnPath = getSafeLoginReturnPath(location.state);
   const loginWithPassword = useAuthStore((state) => state.loginWithPassword);
   const loginWithMobile = useAuthStore((state) => state.loginWithMobile);
   const loading = useAuthStore((state) => state.loading);
@@ -240,9 +254,9 @@ export function Login() {
 
   useEffect(() => {
     if (isAuthenticated() && !submitting) {
-      navigate('/module-select', { replace: true });
+      navigate(returnPath, { replace: true });
     }
-  }, [isAuthenticated, navigate, submitting]);
+  }, [isAuthenticated, navigate, returnPath, submitting]);
 
   const finishLogin = async (login: () => Promise<void>) => {
     setSubmitError(null);
@@ -257,7 +271,7 @@ export function Login() {
         await logout();
         throw syncError;
       }
-      navigate('/module-select', { replace: true });
+      navigate(returnPath, { replace: true });
     } catch (loginError) {
       setSubmitError(loginError instanceof Error ? loginError.message : String(loginError));
     } finally {