Added auth functionality, initial work with views and field types

backend/prisma/schema-central.prisma

@@ -0,0 +1,54 @@
+generator client {
+  provider = "prisma-client-js"
+  output   = "../node_modules/.prisma/central"
+}
+
+datasource db {
+  provider = "mysql"
+  url      = env("CENTRAL_DATABASE_URL")
+}
+
+model User {
+  id        String   @id @default(cuid())
+  email     String   @unique
+  password  String
+  firstName String?
+  lastName  String?
+  role      String   @default("admin") // admin, superadmin
+  isActive  Boolean  @default(true)
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  @@map("users")
+}
+
+model Tenant {
+  id          String   @id @default(cuid())
+  name        String
+  slug        String   @unique // Used for identification
+  dbHost      String   // Database host
+  dbPort      Int      @default(3306)
+  dbName      String   // Database name
+  dbUsername  String   // Database username
+  dbPassword  String   // Encrypted database password
+  status      String   @default("active") // active, suspended, deleted
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+
+  domains     Domain[]
+
+  @@map("tenants")
+}
+
+model Domain {
+  id         String   @id @default(cuid())
+  domain     String   @unique // e.g., "acme" for acme.yourapp.com
+  tenantId   String
+  isPrimary  Boolean  @default(false)
+  createdAt  DateTime @default(now())
+  updatedAt  DateTime @updatedAt
+
+  tenant     Tenant   @relation(fields: [tenantId], references: [id], onDelete: Cascade)
+
+  @@map("domains")
+}