diff --git a/fe_dev.log b/fe_dev.log
new file mode 100644
index 0000000..a3fe59d
--- /dev/null
+++ b/fe_dev.log
@@ -0,0 +1,149 @@
+
+> test-ui@0.0.1 dev /Users/haruncan/Documents/GitHub/ContentGenerator/ContentGen_FE
+> next dev --webpack -p 3001
+
+[baseline-browser-mapping] The data in this module is over two months old.  To ensure accurate Baseline data, please update: `npm i baseline-browser-mapping@latest -D`
+   ▲ Next.js 16.0.0 (webpack)
+   - Local:        http://localhost:3001
+   - Network:      http://10.0.0.196:3001
+   - Environments: .env
+
+ ✓ Starting...
+ ✓ Ready in 2.5s
+ ○ Compiling /[locale]/dashboard/projects/[id] ...
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (323kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (323kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (323kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (323kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+ GET /tr/dashboard/projects/178833cb-6daf-426b-92a6-f9e22a80999c 200 in 12.4s (compile: 12.0s, proxy.ts: 77ms, render: 311ms)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+ GET /tr/dashboard/projects/178833cb-6daf-426b-92a6-f9e22a80999c 200 in 187ms (compile: 76ms, proxy.ts: 42ms, render: 69ms)
+ GET /api/auth/session 200 in 3.0s (compile: 3.0s, render: 41ms)
+ GET /api/auth/session 200 in 13ms (compile: 3ms, render: 10ms)
+ GET /api/auth/session 200 in 13ms (compile: 2ms, render: 11ms)
+ GET /api/auth/session 200 in 16ms (compile: 2ms, render: 13ms)
+ GET /api/auth/session 200 in 29ms (compile: 3ms, render: 26ms)
+ GET /api/auth/session 200 in 18ms (compile: 5ms, render: 13ms)
+ GET /api/auth/session 200 in 49ms (compile: 25ms, render: 25ms)
+ GET /api/auth/session 200 in 13ms (compile: 4ms, render: 9ms)
+ GET /api/auth/session 200 in 19ms (compile: 3ms, render: 17ms)
+ GET /api/auth/session 200 in 15ms (compile: 1380µs, render: 14ms)
+ GET /api/auth/session 200 in 263ms (compile: 29ms, render: 233ms)
+ GET /api/auth/session 200 in 65ms (compile: 7ms, render: 58ms)
+ GET /api/auth/session 200 in 30ms (compile: 4ms, render: 26ms)
+ GET /api/auth/session 200 in 19ms (compile: 3ms, render: 16ms)
+ GET /tr/dashboard/projects/178833cb-6daf-426b-92a6-f9e22a80999c 200 in 415ms (compile: 4ms, proxy.ts: 5ms, render: 406ms)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (323kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (323kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+ GET /api/auth/session 200 in 35ms (compile: 4ms, render: 31ms)
+ GET /api/auth/session 200 in 14ms (compile: 3ms, render: 11ms)
+ GET /api/auth/session 200 in 16ms (compile: 4ms, render: 12ms)
+ GET /api/auth/session 200 in 15ms (compile: 4ms, render: 11ms)
+ GET /api/auth/session 200 in 21ms (compile: 4ms, render: 16ms)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+<w> [webpack.cache.PackFileCacheStrategy] Serializing big strings (322kiB) impacts deserialization performance (consider using Buffer instead and decode when needed)
+ GET /api/auth/session 200 in 286ms (compile: 121ms, render: 165ms)
+ GET /api/auth/session 200 in 18ms (compile: 3ms, render: 15ms)
+ GET /api/auth/session 200 in 22ms (compile: 5ms, render: 17ms)
+ GET /api/auth/session 200 in 16ms (compile: 4ms, render: 12ms)
+ GET /api/auth/session 200 in 13ms (compile: 2ms, render: 10ms)
+ GET /api/auth/session 200 in 13ms (compile: 3ms, render: 10ms)
+ GET /api/auth/session 200 in 81ms (compile: 18ms, render: 63ms)
+ GET /api/auth/session 200 in 20ms (compile: 1935µs, render: 18ms)
+ GET /api/auth/session 200 in 14ms (compile: 1725µs, render: 12ms)
+ GET /api/auth/session 200 in 17ms (compile: 6ms, render: 11ms)
+ GET /api/auth/session 200 in 33ms (compile: 4ms, render: 29ms)
+ GET /api/auth/session 200 in 50ms (compile: 6ms, render: 45ms)
+ GET /api/auth/session 200 in 66ms (compile: 5ms, render: 61ms)
+ GET /api/auth/session 200 in 20ms (compile: 4ms, render: 17ms)
+ GET /api/auth/session 200 in 19ms (compile: 3ms, render: 16ms)
+ GET /api/auth/session 200 in 14ms (compile: 3ms, render: 11ms)
+ GET /api/auth/session 200 in 10ms (compile: 2ms, render: 8ms)
+ GET /api/auth/session 200 in 13ms (compile: 3ms, render: 10ms)
+ GET /api/auth/session 200 in 34ms (compile: 7ms, render: 28ms)
+ GET /api/auth/session 200 in 15ms (compile: 2ms, render: 13ms)
+ GET /api/auth/session 200 in 69ms (compile: 36ms, render: 32ms)
+ GET /api/auth/session 200 in 46ms (compile: 11ms, render: 35ms)
+ GET /api/auth/session 200 in 56ms (compile: 6ms, render: 50ms)
+ GET /api/auth/session 200 in 17ms (compile: 4ms, render: 12ms)
+ GET /api/auth/session 200 in 16ms (compile: 4ms, render: 12ms)
+ GET /api/auth/session 200 in 37ms (compile: 4ms, render: 33ms)
+ GET /api/auth/session 200 in 12ms (compile: 1891µs, render: 10ms)
+ GET /api/auth/session 200 in 9ms (compile: 2ms, render: 7ms)
+ GET /api/auth/session 200 in 27ms (compile: 5ms, render: 22ms)
+ GET /api/auth/session 200 in 15ms (compile: 3ms, render: 12ms)
+ GET /api/auth/session 200 in 14ms (compile: 3ms, render: 11ms)
+ GET /api/auth/session 200 in 19ms (compile: 1386µs, render: 18ms)
+ GET /api/auth/session 200 in 8ms (compile: 1880µs, render: 6ms)
+ GET /api/auth/session 200 in 21ms (compile: 4ms, render: 16ms)
+ GET /api/auth/session 200 in 10ms (compile: 1119µs, render: 9ms)
+ GET /api/auth/session 200 in 11ms (compile: 3ms, render: 8ms)
+ GET /api/auth/session 200 in 160ms (compile: 6ms, render: 154ms)
+ GET /api/auth/session 200 in 8ms (compile: 895µs, render: 7ms)
+ GET /api/auth/session 200 in 11ms (compile: 999µs, render: 10ms)
+ GET /api/auth/session 200 in 14ms (compile: 1522µs, render: 12ms)
+ GET /api/auth/session 200 in 11ms (compile: 1341µs, render: 9ms)
+ GET /api/auth/session 200 in 19ms (compile: 5ms, render: 14ms)
+ GET /api/auth/session 200 in 41ms (compile: 7ms, render: 34ms)
+ GET /api/auth/session 200 in 18ms (compile: 5ms, render: 13ms)
+ GET /api/auth/session 200 in 12ms (compile: 3ms, render: 9ms)
+ GET /api/auth/session 200 in 13ms (compile: 1992µs, render: 11ms)
+ GET /api/auth/session 200 in 19ms (compile: 3ms, render: 16ms)
+ GET /api/auth/session 200 in 20ms (compile: 4ms, render: 15ms)
+ GET /api/auth/session 200 in 9ms (compile: 2ms, render: 7ms)
+ GET /api/auth/session 200 in 47ms (compile: 9ms, render: 37ms)
+ GET /api/auth/session 200 in 27ms (compile: 1872µs, render: 25ms)
+ GET /api/auth/session 200 in 14ms (compile: 3ms, render: 11ms)
+ GET /api/auth/session 200 in 146ms (compile: 5ms, render: 141ms)
+ GET /api/auth/session 200 in 18ms (compile: 4ms, render: 14ms)
+ GET /api/auth/session 200 in 9ms (compile: 1953µs, render: 7ms)
+ GET /api/auth/session 200 in 9ms (compile: 991µs, render: 8ms)
+ GET /api/auth/session 200 in 56ms (compile: 5ms, render: 52ms)
+ GET /api/auth/session 200 in 20ms (compile: 3ms, render: 17ms)
+ GET /api/auth/session 200 in 13ms (compile: 3ms, render: 10ms)
+ GET /api/auth/session 200 in 8ms (compile: 953µs, render: 7ms)
+ GET /api/auth/session 200 in 47ms (compile: 9ms, render: 38ms)
+ GET /api/auth/session 200 in 134ms (compile: 6ms, render: 128ms)
+ GET /api/auth/session 200 in 192ms (compile: 18ms, render: 174ms)
+ GET /api/auth/session 200 in 32ms (compile: 11ms, render: 21ms)
+ GET /api/auth/session 200 in 24ms (compile: 3ms, render: 21ms)
+ GET /api/auth/session 200 in 20ms (compile: 5ms, render: 15ms)
+ GET /api/auth/session 200 in 13ms (compile: 3ms, render: 10ms)
+ GET /api/auth/session 200 in 7ms (compile: 962µs, render: 6ms)
+ GET /api/auth/session 200 in 9ms (compile: 925µs, render: 8ms)
+ GET /api/auth/session 200 in 10ms (compile: 2ms, render: 8ms)
+ GET /api/auth/session 200 in 9ms (compile: 1002µs, render: 8ms)
+ GET /api/auth/session 200 in 10ms (compile: 1910µs, render: 8ms)
+ GET /api/auth/session 200 in 8ms (compile: 868µs, render: 7ms)
+ GET /api/auth/session 200 in 15ms (compile: 1285µs, render: 14ms)
+ GET /api/auth/session 200 in 26ms (compile: 1425µs, render: 25ms)
+ GET /api/auth/session 200 in 62ms (compile: 9ms, render: 53ms)
+ GET /api/auth/session 200 in 13ms (compile: 4ms, render: 9ms)
+ GET /api/auth/session 200 in 20ms (compile: 5ms, render: 15ms)
+ GET /api/auth/session 200 in 12ms (compile: 1277µs, render: 11ms)
+ GET /api/auth/session 200 in 13ms (compile: 4ms, render: 8ms)
+ GET /api/auth/session 200 in 19ms (compile: 6ms, render: 12ms)
+ GET /api/auth/session 200 in 8ms (compile: 1087µs, render: 7ms)
+ GET /api/auth/session 200 in 10ms (compile: 2ms, render: 8ms)
+ GET /api/auth/session 200 in 11ms (compile: 1613µs, render: 9ms)
+ GET /api/auth/session 200 in 26ms (compile: 5ms, render: 21ms)
+ GET /api/auth/session 200 in 17ms (compile: 4ms, render: 12ms)
+ GET /api/auth/session 200 in 14ms (compile: 6ms, render: 9ms)
diff --git a/next-env.d.ts b/next-env.d.ts
index 9edff1c..c4b7818 100644
--- a/next-env.d.ts
+++ b/next-env.d.ts
@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.
diff --git a/src/app/[locale]/(auth)/signin/page.tsx b/src/app/[locale]/(auth)/signin/page.tsx
index fd2fe98..846da8a 100644
--- a/src/app/[locale]/(auth)/signin/page.tsx
+++ b/src/app/[locale]/(auth)/signin/page.tsx
@@ -5,6 +5,7 @@ import { useRouter } from "next/navigation";
 import { signIn } from "next-auth/react";
 import { motion } from "framer-motion";
 import { Sparkles, Mail, Lock, Loader2, ArrowRight } from "lucide-react";
+import { useQueryClient } from "@tanstack/react-query";
 
 export default function SignInPage() {
   const router = useRouter();
@@ -12,6 +13,7 @@ export default function SignInPage() {
   const [password, setPassword] = useState("");
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState("");
+  const queryClient = useQueryClient();
 
   const handleSubmit = async (e: React.FormEvent) => {
     e.preventDefault();
@@ -35,6 +37,7 @@ export default function SignInPage() {
         return;
       }
 
+      queryClient.clear();
       router.replace("/dashboard");
     } catch {
       setError("Bağlantı hatası. Lütfen tekrar deneyin.");
diff --git a/src/components/auth/login-modal.tsx b/src/components/auth/login-modal.tsx
index b400c8f..ba74bc9 100644
--- a/src/components/auth/login-modal.tsx
+++ b/src/components/auth/login-modal.tsx
@@ -23,6 +23,7 @@ import { useState } from "react";
 import { MdMail } from "react-icons/md";
 import { BiLock } from "react-icons/bi";
 import { Link } from "@/i18n/navigation";
+import { useQueryClient } from "@tanstack/react-query";
 
 const schema = yup.object({
   email: yup.string().email().required(),
@@ -39,6 +40,7 @@ interface LoginModalProps {
 export function LoginModal({ open, onOpenChange }: LoginModalProps) {
   const t = useTranslations();
   const [loading, setLoading] = useState(false);
+  const queryClient = useQueryClient();
 
   const {
     handleSubmit,
@@ -62,6 +64,7 @@ export function LoginModal({ open, onOpenChange }: LoginModalProps) {
         throw new Error(res.error);
       }
 
+      queryClient.clear();
       onOpenChange(false);
       toaster.success({
         title: t("auth.login-success") || "Login successful!",
diff --git a/src/components/layout/header/header.tsx b/src/components/layout/header/header.tsx
index 6e1041d..34c3327 100644
--- a/src/components/layout/header/header.tsx
+++ b/src/components/layout/header/header.tsx
@@ -38,6 +38,7 @@ import { signOut, useSession } from "next-auth/react";
 import { authConfig } from "@/config/auth";
 import { LoginModal } from "@/components/auth/login-modal";
 import { LuLogIn } from "react-icons/lu";
+import { useQueryClient } from "@tanstack/react-query";
 
 export default function Header() {
   const t = useTranslations();
@@ -45,6 +46,7 @@ export default function Header() {
   const [loginModalOpen, setLoginModalOpen] = useState(false);
   const router = useRouter();
   const { data: session, status } = useSession();
+  const queryClient = useQueryClient();
 
   const isAuthenticated = !!session;
   const isLoading = status === "loading";
@@ -61,6 +63,7 @@ export default function Header() {
   }, []);
 
   const handleLogout = async () => {
+    queryClient.clear();
     await signOut({ redirect: false });
     if (authConfig.isAuthRequired) {
       router.replace("/signin");