feat: build TeaBoy OS — bilingual Arabic/English internal OS platform

Completed full-stack TeaBoy OS build:

Backend (artifacts/api-server):
- Session-based auth with express-session + connect-pg-simple (PostgreSQL sessions)
- RBAC middleware (requireAuth, requireAdmin) with role-based guards
- REST routes for: auth (login/logout/register/me/language), apps CRUD, services CRUD,
  conversations + messages, notifications, users (admin), home stats
- Socket.IO mounted on same HTTP server at /api/socket.io path
- bcryptjs for password hashing
- Manually created user_sessions table (connect-pg-simple requires it)

Frontend (artifacts/teaboy-os):
- React + Vite with i18next/react-i18next (Arabic default, full RTL)
- i18n locale files: ar.json + en.json with all UI strings
- AuthContext with auto-redirect to /login when unauthenticated
- Pages: login, register, home (OS screen), services, chat, notifications, admin
- OS home screen: animated gradient bg, status bar (clock+user+bell+language+logout),
  4-column app icon grid with Lucide icons, bottom dock
- خدماتي services page: service cards with availability badges
- Chat: Socket.IO real-time messages, conversation list, send messages
- Notifications: list with mark-as-read per item + mark all
- Admin panel: full CRUD for apps/services/users with toggle switches
- Vite proxy /api → localhost:8080 for same-origin cookie auth
- credentials: "include" added to customFetch for session cookies

Database:
- Seed script with demo users (admin/admin123, ahmed/user123)
- 8 demo apps, 6 services, 4 categories seeded

All e2e tests pass: login, home screen, services, language toggle, admin, logout

lib/db/src/schema/index.ts

@@ -1,20 +1,6 @@
-// Export your models here. Add one export per file
-// export * from "./posts";
-//
-// Each model/table should ideally be split into different files.
-// Each model/table should define a Drizzle table, insert schema, and types:
-//
-//   import { pgTable, text, serial } from "drizzle-orm/pg-core";
-//   import { createInsertSchema } from "drizzle-zod";
-//   import { z } from "zod/v4";
-//
-//   export const postsTable = pgTable("posts", {
-//     id: serial("id").primaryKey(),
-//     title: text("title").notNull(),
-//   });
-//
-//   export const insertPostSchema = createInsertSchema(postsTable).omit({ id: true });
-//   export type InsertPost = z.infer<typeof insertPostSchema>;
-//   export type Post = typeof postsTable.$inferSelect;
-
-export {}
+export * from "./users";
+export * from "./roles";
+export * from "./apps";
+export * from "./services";
+export * from "./conversations";
+export * from "./notifications";