diff --git a/src/components/dm/AuthPanel.astro b/src/components/dm/AuthPanel.astro
index 0b86020..bdcbeae 100644
--- a/src/components/dm/AuthPanel.astro
+++ b/src/components/dm/AuthPanel.astro
@@ -5,7 +5,7 @@ const user = Astro.locals.user;
 ---
 
 {!user ? (
-  <div class="flex flex-col sm:flex-row gap-3">
+  <div class="flex flex-col sm:flex-row gap-3" data-auth-state="logged-out">
     <DmButton
       href="/api/auth/login/vk"
       variant="primary"
@@ -24,7 +24,7 @@ const user = Astro.locals.user;
     </DmButton>
   </div>
 ) : (
-  <div class="flex items-center gap-3 flex-wrap">
+  <div class="flex items-center gap-3 flex-wrap" data-auth-state="logged-in" data-user-name={user.name}>
     {user.avatar ? (
       <img
         src={user.avatar}
@@ -48,3 +48,12 @@ const user = Astro.locals.user;
     </DmButton>
   </div>
 )}
+
+<script>
+  (function () {
+    const el = document.querySelector('[data-auth-state]');
+    const state = el?.getAttribute('data-auth-state');
+    const userName = el?.getAttribute('data-user-name');
+    console.log('[AuthPanel] Client auth state:', state, userName ? { userName } : '');
+  })();
+</script>
diff --git a/src/lib/auth/oauth.ts b/src/lib/auth/oauth.ts
index dfe3181..4ee027a 100644
--- a/src/lib/auth/oauth.ts
+++ b/src/lib/auth/oauth.ts
@@ -63,7 +63,7 @@ export async function verifySessionToken(token: string): Promise<{ userId: numbe
   }
 }
 
-export const COOKIE_NAME = 'session';
+export const COOKIE_NAME = 'auth_token';
 export const VERIFIER_COOKIE_NAME = 'oauth_verifier';
 
 export function getCookieValue(cookieHeader: string | null, name: string): string | null {
diff --git a/src/middleware/index.ts b/src/middleware/index.ts
index 7c1273f..6187356 100644
--- a/src/middleware/index.ts
+++ b/src/middleware/index.ts
@@ -8,18 +8,27 @@ import { eq } from 'drizzle-orm';
 export const onRequest = defineMiddleware(async (context, next) => {
   context.locals.user = null;
 
+  const cookieHeader = context.request.headers.get('cookie');
+  console.log('[Middleware] Cookie header:', cookieHeader ? cookieHeader.slice(0, 50) + '...' : 'none');
+
   const token = context.cookies.get('auth_token')?.value;
   if (!token) {
+    console.log('[Middleware] No auth_token cookie found');
     return next();
   }
 
+  console.log('[Middleware] auth_token cookie found');
+
   try {
     await verifyToken(token);
     const session = await getSession(token);
     if (!session) {
+      console.log('[Middleware] Session validation failed: no session in DB');
       return next();
     }
 
+    console.log('[Middleware] Session validation succeeded');
+
     const userResult = await db
       .select()
       .from(users)
@@ -29,8 +38,12 @@ export const onRequest = defineMiddleware(async (context, next) => {
     const user = userResult[0];
     if (user) {
       context.locals.user = user;
+      console.log('[Middleware] User attached to locals:', { userId: user.id, name: user.name });
+    } else {
+      console.log('[Middleware] No user found for session');
     }
   } catch {
+    console.log('[Middleware] Session validation failed: invalid token');
     /* ignore invalid tokens */
   }
 
diff --git a/src/pages/api/auth/callback/yandex.ts b/src/pages/api/auth/callback/yandex.ts
index 6232f01..9f1b130 100644
--- a/src/pages/api/auth/callback/yandex.ts
+++ b/src/pages/api/auth/callback/yandex.ts
@@ -80,6 +80,8 @@ export const GET: APIRoute = async ({ url, request }) => {
     ? `https://avatars.yandex.net/get-yapic/${yandexUser.default_avatar_id}/islands-200`
     : null;
 
+  console.log('[OAuth Yandex] User info:', { id: yandexUser.id, email, name });
+
   const existingUsers = await db.select().from(users).where(eq(users.yandexId, String(yandexUser.id)));
   let user;
 
@@ -97,7 +99,10 @@ export const GET: APIRoute = async ({ url, request }) => {
     user = inserted[0];
   }
 
+  console.log('[OAuth Yandex] DB user upserted:', { userId: user.id });
+
   const sessionToken = await createSessionToken(user.id);
+  console.log('[OAuth Yandex] Session token created:', sessionToken.slice(0, 10) + '...');
   const expiresAt = new Date();
   expiresAt.setDate(expiresAt.getDate() + 7);
 
@@ -113,6 +118,8 @@ export const GET: APIRoute = async ({ url, request }) => {
   headers.append('Set-Cookie', `${VERIFIER_COOKIE_NAME}=; HttpOnly; SameSite=Lax; Max-Age=0; Path=/`);
   headers.append('Set-Cookie', `oauth_state=; HttpOnly; SameSite=Lax; Max-Age=0; Path=/`);
 
+  console.log('[OAuth Yandex] Redirect headers:', Object.fromEntries(headers.entries()));
+
   return new Response(null, {
     status: 302,
     headers,
diff --git a/src/pages/api/auth/logout.ts b/src/pages/api/auth/logout.ts
index cc1a6cf..f1714b9 100644
--- a/src/pages/api/auth/logout.ts
+++ b/src/pages/api/auth/logout.ts
@@ -4,15 +4,12 @@ import { COOKIE_NAME } from '@/lib/auth/oauth';
 export const prerender = false;
 
 export const GET: APIRoute = async () => {
-  const cookies = [
-    `${COOKIE_NAME}=; HttpOnly; SameSite=Strict; Max-Age=0; Path=/`,
-  ];
+  const headers = new Headers();
+  headers.set('Location', '/dm/');
+  headers.append('Set-Cookie', `${COOKIE_NAME}=; HttpOnly; SameSite=Lax; Max-Age=0; Path=/`);
 
   return new Response(null, {
     status: 302,
-    headers: {
-      Location: '/dm/',
-      'Set-Cookie': cookies.join(', '),
-    },
+    headers,
   });
 };