Use bundled branding assets

frontend/app/ui/BrandingFavicon.tsx

@@ -1,21 +1,15 @@
 'use client'
 
 import { useEffect } from 'react'
-import { getApiBase } from '../lib/auth'
-
-const STORAGE_KEY = 'branding_version'
 
 export default function BrandingFavicon() {
   useEffect(() => {
-    const baseUrl = getApiBase()
-    const version =
-      (typeof window !== 'undefined' && window.localStorage.getItem(STORAGE_KEY)) || ''
-    const versionSuffix = version ? `?v=${encodeURIComponent(version)}` : ''
-    const href = `${baseUrl}/branding/favicon.ico${versionSuffix}`
+    const href = '/branding-icon.svg'
     let link = document.querySelector("link[rel='icon']") as HTMLLinkElement | null
     if (!link) {
       link = document.createElement('link')
       link.rel = 'icon'
+      link.type = 'image/svg+xml'
       document.head.appendChild(link)
     }
     link.href = href