feat: add harp branding, title autosave, and fix user lookup

frontend/.tanstack/tmp/96912ac9-b9c359f62fa9597181b6b38efe3cc33c

@@ -0,0 +1,9 @@
+import { createFileRoute } from '@tanstack/react-router'
+
+export const Route = createFileRoute('/_authenticated')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return <div>Hello "/_authenticated"!</div>
+}

frontend/.tanstack/tmp/db3b3ef5-b9c359f62fa9597181b6b38efe3cc33c

@@ -0,0 +1,9 @@
+import { createFileRoute } from '@tanstack/react-router'
+
+export const Route = createFileRoute('/_authenticated')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return <div>Hello "/_authenticated"!</div>
+}