chore(web): add session caching to improve performance

web/lib/httpBrowserClient.ts

@@ -5,8 +5,29 @@ const httpBrowserClient = axios.create({
   baseURL: process.env.NEXT_PUBLIC_API_BASE_URL || '',
 })
 
+// Cache for session data to reduce API calls
+let sessionCache: any = null
+let cacheTimestamp = 0
+const CACHE_DURATION = 2 * 60 * 1000 // 2 minutes
+
+const getCachedSession = async () => {
+  const now = Date.now()
+  
+  // Return cached session if it's still valid
+  if (sessionCache && (now - cacheTimestamp) < CACHE_DURATION) {
+    return sessionCache
+  }
+  
+  // Fetch fresh session and update cache
+  const session = await getSession()
+  sessionCache = session
+  cacheTimestamp = now
+  
+  return session
+}
+
 httpBrowserClient.interceptors.request.use(async (config) => {
-  const session: any = await getSession()
+  const session = await getCachedSession()
 
   if (session?.user?.accessToken) {
     config.headers.Authorization = `Bearer ${session.user.accessToken}`