fix: OIDC grant 요청 시 redirect_uri 파라미터 추가

server.js

@@ -91,7 +91,8 @@ app.post('/api/login', async (req, res) => {
             grant_type: 'password',
             username: loginId,
             password: password,
-            scope: 'openid profile'
+            scope: 'openid profile',
+            redirect_uri: process.env.REDIRECT_URI // 추가
         });
 
         console.log(`[OIDC Step 2] TokenSet received successfully.`);