fix: FullContextRoutes no longer blocks on Neo4j contexts

Removed NeoUserContext and NeoInstituteContext from the gateway
spinner. They were blocking ALL authenticated routes until Neo4j
graph data was loaded, which took 1-8 seconds and caused persistent
spinners. Now only UserContext (Supabase profile, ~200ms) must be
ready before routes render. Each page handles its own graph data
loading state independently.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/AppRoutes.tsx

@@ -2,8 +2,6 @@ import React from 'react';
 import { Routes, Route, useLocation, Outlet, Navigate } from 'react-router-dom';
 import { useAuth } from './contexts/AuthContext';
 import { useUser } from './contexts/UserContext';
-import { useNeoUser } from './contexts/NeoUserContext';
-import { useNeoInstitute } from './contexts/NeoInstituteContext';
 import Layout from './pages/Layout';
 import LoginPage from './pages/auth/loginPage';
 import SignupPage from './pages/auth/signupPage';
@@ -38,18 +36,11 @@ import {
 } from './pages/timetable';
 
 const FullContextRoutes: React.FC = () => {
+  // Only block on Supabase profile being ready — Neo4j contexts initialize in the background.
+  // Individual pages handle their own Neo4j loading states.
   const { isInitialized: isUserInitialized } = useUser();
-  const { isLoading: isNeoUserLoading, isInitialized: isNeoUserInitialized } = useNeoUser();
-  const { isLoading: isNeoInstituteLoading, isInitialized: isNeoInstituteInitialized } = useNeoInstitute();
 
-  const isLoading =
+  if (!isUserInitialized) {
-    !isUserInitialized ||
-    isNeoUserLoading ||
-    !isNeoUserInitialized ||
-    isNeoInstituteLoading ||
-    !isNeoInstituteInitialized;
-
-  if (isLoading) {
     return (
       <div
         style={{