diff --git a/src/server/static-react/src/components/Header.tsx b/src/server/static-react/src/components/Header.tsx
index fa7fdd32..c226a78f 100644
--- a/src/server/static-react/src/components/Header.tsx
+++ b/src/server/static-react/src/components/Header.tsx
@@ -137,7 +137,7 @@ function Header({ onSettingsClick, onAiSettingsClick, onCloudSettingsClick }: He
     let cancelled = false
     const checkOrgSync = async () => {
       try {
-        const hash = localStorage.getItem('fold_user_hash')
+        const hash = localStorage.getItem(BROWSER_CONFIG.STORAGE_KEYS.USER_HASH)
         if (!hash) return
         const res = await defaultApiClient.get('/org')
         const data = ((res as { data?: unknown }).data ?? res) as { orgs?: Array<{ org_hash: string }> }
diff --git a/src/server/static-react/src/components/data-browser/shared.tsx b/src/server/static-react/src/components/data-browser/shared.tsx
index 20cd35ad..3aa3e88f 100644
--- a/src/server/static-react/src/components/data-browser/shared.tsx
+++ b/src/server/static-react/src/components/data-browser/shared.tsx
@@ -2,6 +2,7 @@ import { useCallback, useEffect, useState } from 'react'
 import { InboxArrowDownIcon } from '@heroicons/react/24/outline'
 import { mutationClient } from '../../api/clients'
 import { SCHEMA_BADGE_COLORS } from '../../constants/ui'
+import { BROWSER_CONFIG } from '../../constants/config'
 import {
   createHashRangeKeyFilter,
   createHashKeyFilter,
@@ -241,7 +242,7 @@ export function VersionHistory({ moleculeUuid }: { moleculeUuid: string | null |
 const IMAGE_EXTENSIONS = /\.(jpe?g|png|gif|webp|svg)$/i
 
 function authHeaders(): Record<string, string> {
-  const userHash = localStorage.getItem('fold_user_hash')
+  const userHash = localStorage.getItem(BROWSER_CONFIG.STORAGE_KEYS.USER_HASH)
   if (!userHash) return {}
   return { 'x-user-hash': userHash, 'x-user-id': userHash }
 }
diff --git a/src/server/static-react/src/components/settings/OrgSettingsPanel.tsx b/src/server/static-react/src/components/settings/OrgSettingsPanel.tsx
index db331b3f..f4e61783 100644
--- a/src/server/static-react/src/components/settings/OrgSettingsPanel.tsx
+++ b/src/server/static-react/src/components/settings/OrgSettingsPanel.tsx
@@ -2,6 +2,7 @@ import { useState, useEffect, useRef, type FormEvent } from 'react'
 import { defaultApiClient } from '../../api/core/client'
 import { systemClient } from '../../api/clients/systemClient'
 import { orgClient, type OrgInviteBundle, type OrgMemberInfo, type CloudMember } from '../../api/clients/orgClient'
+import { BROWSER_CONFIG } from '../../constants/config'
 
 interface Org {
   org_hash: string
@@ -52,7 +53,7 @@ export default function OrgSettingsPanel() {
 
   useEffect(() => {
     const doFetch = () => {
-      const hash = localStorage.getItem('fold_user_hash')
+      const hash = localStorage.getItem(BROWSER_CONFIG.STORAGE_KEYS.USER_HASH)
       if (!hash) {
         const timer = setTimeout(doFetch, 1000)
         return () => clearTimeout(timer)
diff --git a/src/server/static-react/src/components/tabs/IngestionTab.tsx b/src/server/static-react/src/components/tabs/IngestionTab.tsx
index e11cc9f9..27eb3dda 100644
--- a/src/server/static-react/src/components/tabs/IngestionTab.tsx
+++ b/src/server/static-react/src/components/tabs/IngestionTab.tsx
@@ -4,6 +4,7 @@ import { ingestionClient } from '../../api/clients'
 import { defaultApiClient } from '../../api/core/client'
 import { generateBlogPosts } from '../../data/sampleBlogPosts'
 import { twitterSamples, instagramSamples, linkedinSamples, tiktokSamples } from '../../data/sampleSocialPosts'
+import { BROWSER_CONFIG } from '../../constants/config'
 
 const SAMPLES_ENABLED = import.meta.env.VITE_ENABLE_SAMPLES === 'true'
 
@@ -31,7 +32,7 @@ function IngestionTab({ onResult }: IngestionTabProps) {
     const maxRetries = 5
     const fetchOrgs = () => {
       if (cancelled) return
-      const hash = localStorage.getItem('fold_user_hash')
+      const hash = localStorage.getItem(BROWSER_CONFIG.STORAGE_KEYS.USER_HASH)
       if (!hash) {
         retries++
         if (retries < maxRetries) setTimeout(fetchOrgs, 1000)
diff --git a/src/server/static-react/src/components/tabs/SmartFolderTab.tsx b/src/server/static-react/src/components/tabs/SmartFolderTab.tsx
index 99c5ae27..4f5254c1 100644
--- a/src/server/static-react/src/components/tabs/SmartFolderTab.tsx
+++ b/src/server/static-react/src/components/tabs/SmartFolderTab.tsx
@@ -11,6 +11,7 @@ import { useFilesProgress } from '../../hooks/useFilesProgress'
 import FolderInput from './smart-folder/FolderInput'
 import ScanResultsView from './smart-folder/ScanResultsView'
 import BatchProgressView from './smart-folder/BatchProgressView'
+import { BROWSER_CONFIG } from '../../constants/config'
 
 const STORAGE_KEY = 'smartFolderTabState'
 
@@ -90,7 +91,7 @@ function SmartFolderTab({ onResult: onResultProp }: SmartFolderTabProps) {
     const maxRetries = 5
     const fetchOrgs = () => {
       if (cancelled) return
-      const hash = localStorage.getItem('fold_user_hash')
+      const hash = localStorage.getItem(BROWSER_CONFIG.STORAGE_KEYS.USER_HASH)
       if (!hash) {
         retries++
         if (retries < maxRetries) setTimeout(fetchOrgs, 1000)
diff --git a/src/server/static-react/src/components/tabs/llm-query/ImageThumbnail.tsx b/src/server/static-react/src/components/tabs/llm-query/ImageThumbnail.tsx
index bdbe3fcb..2c898ebc 100644
--- a/src/server/static-react/src/components/tabs/llm-query/ImageThumbnail.tsx
+++ b/src/server/static-react/src/components/tabs/llm-query/ImageThumbnail.tsx
@@ -1,4 +1,5 @@
 import { useEffect, useState } from 'react'
+import { BROWSER_CONFIG } from '../../../constants/config'
 
 interface ImageThumbnailProps {
   fileHash: string
@@ -12,7 +13,7 @@ export default function ImageThumbnail({ fileHash, sourceFile }: ImageThumbnailP
   useEffect(() => {
     const url = `/api/file/${fileHash}?name=${encodeURIComponent(sourceFile || '')}`
     let revoked = false
-    const userHash = localStorage.getItem('fold_user_hash')
+    const userHash = localStorage.getItem(BROWSER_CONFIG.STORAGE_KEYS.USER_HASH)
     const headers: Record<string, string> = {}
     if (userHash) {
       headers['x-user-hash'] = userHash