Add RUT registration & Validation, bulk aprove

backend/prisma/schema.prisma

@@ -14,6 +14,19 @@ model User {
   password String
   role     String   @default("USER") // ADMIN, USER
   plates   Plate[]
+  people   Person[]
+}
+
+model Person {
+  id        Int      @id @default(autoincrement())
+  rut       String   @unique
+  name      String
+  status    String   @default("PENDING") // PENDING, APPROVED, DENIED
+  startDate DateTime
+  endDate   DateTime
+  createdAt DateTime @default(now())
+  addedBy   User?    @relation(fields: [addedById], references: [id])
+  addedById Int?
 }
 
 model Plate {

backend/src/index.js

@@ -147,6 +147,76 @@ app.get('/api/recent', async (req, res) => {
   }
 });
 
+// Helper: RUT Validation
+function validateRut(rut) {
+  if (!rut || !/^[0-9]+-[0-9kK]{1}$/.test(rut)) return false;
+  let [num, dv] = rut.split('-');
+  let total = 0;
+  let multiple = 2;
+  for (let i = num.length - 1; i >= 0; i--) {
+    total += parseInt(num.charAt(i)) * multiple;
+    multiple = (multiple + 1) % 8 || 2;
+  }
+  let res = 11 - (total % 11);
+  let finalDv = res === 11 ? '0' : res === 10 ? 'K' : res.toString();
+  return finalDv.toUpperCase() === dv.toUpperCase();
+}
+
+// People CRUD
+app.get('/api/people', authenticateToken, async (req, res) => {
+  try {
+    const where = req.user.role === 'ADMIN' ? {} : { addedById: req.user.id };
+    const people = await prisma.person.findMany({
+      where,
+      include: { addedBy: { select: { username: true } } }
+    });
+    res.json(people);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+app.post('/api/people', authenticateToken, async (req, res) => {
+  const { rut, name, durationDays } = req.body;
+  if (!validateRut(rut)) {
+    return res.status(400).json({ error: 'Invalid RUT format (12345678-K)' });
+  }
+
+  const startDate = new Date();
+  const endDate = new Date();
+  endDate.setDate(endDate.getDate() + parseInt(durationDays || 1));
+
+  try {
+    const person = await prisma.person.create({
+      data: {
+        rut,
+        name,
+        startDate,
+        endDate,
+        status: 'PENDING',
+        addedById: req.user.id
+      }
+    });
+    res.json(person);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Admin: Bulk Approve People by User
+app.post('/api/people/bulk-approve', authenticateToken, isAdmin, async (req, res) => {
+  const { userId } = req.body;
+  try {
+    await prisma.person.updateMany({
+      where: { addedById: parseInt(userId), status: 'PENDING' },
+      data: { status: 'APPROVED' }
+    });
+    res.json({ message: 'Bulk approval successful' });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
 // Detection Endpoint (from Python)
 app.post('/api/detect', async (req, res) => {
   const { plate_number } = req.body;