Implemented version display in SiteHeader of webui

- Updated API version to 1.2.0
- Stored versions in localStorage

lightrag_webui/src/features/LoginPage.tsx

@@ -43,7 +43,7 @@ const LoginPage = () => {
 
         if (!status.auth_configured && status.access_token) {
           // If auth is not configured, use the guest token and redirect
-          login(status.access_token, true)
+          login(status.access_token, true, status.core_version, status.api_version)
           if (status.message) {
             toast.info(status.message)
           }
@@ -87,7 +87,7 @@ const LoginPage = () => {
 
       // Check authentication mode
       const isGuestMode = response.auth_mode === 'disabled'
-      login(response.access_token, isGuestMode)
+      login(response.access_token, isGuestMode, response.core_version, response.api_version)
 
       if (isGuestMode) {
         // Show authentication disabled notification

lightrag_webui/src/features/SiteHeader.tsx

@@ -55,7 +55,11 @@ function TabsNavigation() {
 
 export default function SiteHeader() {
   const { t } = useTranslation()
-  const { isGuestMode } = useAuthStore()
+  const { isGuestMode, coreVersion, apiVersion } = useAuthStore()
+
+  const versionDisplay = (coreVersion && apiVersion)
+    ? `${coreVersion}/${apiVersion}`
+    : null;
 
   const handleLogout = () => {
     navigationService.navigateToLogin();
@@ -67,6 +71,11 @@ export default function SiteHeader() {
         <ZapIcon className="size-4 text-emerald-400" aria-hidden="true" />
         {/* <img src='/logo.png' className="size-4" /> */}
         <span className="font-bold md:inline-block">{SiteInfo.name}</span>
+        {versionDisplay && (
+          <span className="ml-2 text-xs text-gray-500 dark:text-gray-400">
+            v{versionDisplay}
+          </span>
+        )}
       </a>
 
       <div className="flex h-10 flex-1 justify-center">