Add complete Biblical Guide web application with Material UI

Implemented comprehensive Romanian Biblical Guide web app:
- Next.js 15 with App Router and TypeScript
- Material UI 7.3.2 for modern, responsive design
- PostgreSQL database with Prisma ORM
- Complete Bible reader with book/chapter navigation
- AI-powered biblical chat with Romanian responses
- Prayer wall for community prayer requests
- Advanced Bible search with filters and highlighting
- Sample Bible data imported from API.Bible
- All API endpoints created and working
- Professional Material UI components throughout
- Responsive layout with navigation and theme

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

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

app/api/auth/register/route.ts

@@ -0,0 +1,50 @@
+import { NextResponse } from 'next/server'
+import { createUser, generateToken } from '@/lib/auth'
+import { prisma } from '@/lib/db'
+import { userRegistrationSchema } from '@/lib/validation'
+import { z } from 'zod'
+
+export async function POST(request: Request) {
+  try {
+    const body = await request.json()
+
+    // Validate input
+    const result = userRegistrationSchema.safeParse(body)
+    if (!result.success) {
+      const errors = result.error.errors.map(err => err.message).join(', ')
+      return NextResponse.json({ error: errors }, { status: 400 })
+    }
+
+    const { email, password, name } = result.data
+
+    // Check if user exists
+    const existing = await prisma.user.findUnique({ where: { email } })
+    if (existing) {
+      return NextResponse.json({ error: 'Utilizatorul există deja' }, { status: 409 })
+    }
+
+    // Create user
+    const user = await createUser(email, password, name)
+    const token = generateToken(user.id)
+
+    // Create session
+    await prisma.session.create({
+      data: {
+        userId: user.id,
+        token,
+        expiresAt: new Date(Date.now() + 7 * 24 * 60 * 60 * 1000)
+      }
+    })
+
+    return NextResponse.json({
+      user: { id: user.id, email: user.email, name: user.name },
+      token
+    })
+  } catch (error) {
+    console.error('Registration error:', error)
+    if (error instanceof z.ZodError) {
+      return NextResponse.json({ error: 'Date de intrare invalide' }, { status: 400 })
+    }
+    return NextResponse.json({ error: 'Eroare de server' }, { status: 500 })
+  }
+}