Fix authentication state persistence and admin role display

- Implement complete authentication system with JWT token validation
- Add auth provider with persistent login state across page refreshes
- Create multilingual login/register forms with Material-UI components
- Fix token validation using raw SQL queries to bypass Prisma sync issues
- Add comprehensive error handling for expired/invalid tokens
- Create profile and settings pages with full i18n support
- Add proper user role management (admin/user) with database sync
- Implement secure middleware with CSRF protection and auth checks
- Add debug endpoints for troubleshooting authentication issues
- Fix Zustand store persistence for authentication state

🤖 Generated with [Claude Code](https://claude.ai/code)

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

app/api/debug/schema/route.ts

@@ -0,0 +1,35 @@
+import { NextResponse } from 'next/server'
+import { prisma } from '@/lib/db'
+
+export const runtime = 'nodejs'
+
+export async function GET() {
+  try {
+    // Get table structure for User table
+    const tableInfo = await prisma.$queryRaw`
+      SELECT column_name, data_type, is_nullable, column_default
+      FROM information_schema.columns
+      WHERE table_name = 'User' AND table_schema = 'public'
+      ORDER BY ordinal_position;
+    `
+
+    // Also try to get one user record to see what fields are actually there
+    let sampleUser = null
+    try {
+      sampleUser = await prisma.$queryRaw`SELECT * FROM "User" LIMIT 1;`
+    } catch (e) {
+      sampleUser = { error: 'Could not fetch sample user: ' + e.message }
+    }
+
+    return NextResponse.json({
+      tableStructure: tableInfo,
+      sampleUser: sampleUser
+    })
+  } catch (error) {
+    console.error('Schema debug error:', error)
+    return NextResponse.json({
+      error: 'Schema debug failed',
+      details: error.message
+    }, { status: 500 })
+  }
+}