fix: Silent handling of expired auth tokens (no console error)

frontend/contexts/auth-context.tsx

@@ -1,6 +1,6 @@
 "use client"
 
-import React, { createContext, useContext, useState, useEffect } from "react"
+import React, { createContext, useContext, useState, useEffect, useCallback } from "react"
 import { getApiUrl } from "@/lib/api-config"
 
 interface User {
@@ -32,15 +32,33 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
     const [token, setToken] = useState<string | null>(null)
     const [loading, setLoading] = useState(true)
 
+    const fetchUser = useCallback(async (authToken: string): Promise<boolean> => {
+        const res = await fetch(`${getApiUrl()}/auth/users/me`, {
+            headers: {
+                Authorization: `Bearer ${authToken}`
+            }
+        })
+        if (res.ok) {
+            const userData = await res.json()
+            setUser(userData)
+            return true
+        } else if (res.status === 401 || res.status === 403) {
+            // Token expired or invalid - handle silently
+            return false
+        } else {
+            // Unexpected error
+            console.warn("Auth check failed with status:", res.status)
+            return false
+        }
+    }, [])
+
     useEffect(() => {
         const initAuth = async () => {
             const storedToken = localStorage.getItem("token")
             if (storedToken) {
                 setToken(storedToken)
-                try {
-                    await fetchUser(storedToken)
-                } catch (err) {
-                    console.error("Auth init failed", err)
+                const success = await fetchUser(storedToken)
+                if (!success) {
                     localStorage.removeItem("token")
                     setToken(null)
                 }
@@ -48,21 +66,7 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
             setLoading(false)
         }
         initAuth()
-    }, [])
-
-    const fetchUser = async (token: string) => {
-        const res = await fetch(`${getApiUrl()}/auth/users/me`, {
-            headers: {
-                Authorization: `Bearer ${token}`
-            }
-        })
-        if (res.ok) {
-            const userData = await res.json()
-            setUser(userData)
-        } else {
-            throw new Error("Failed to fetch user")
-        }
-    }
+    }, [fetchUser])
 
     const login = async (newToken: string) => {
         localStorage.setItem("token", newToken)