feat: implement complete invoicing application with CSV import and PDF export

- Add comprehensive CSV import system with drag-and-drop upload and validation
- Create UniversalTable component with advanced filtering, searching, and batch actions
- Implement invoice management (view, edit, delete) with professional PDF export
- Add client management with full CRUD operations
- Set up authentication with NextAuth.js and email/password login
- Configure database schema with users, clients, invoices, and invoice_items tables
- Build responsive UI with shadcn/ui components and emerald branding
- Add type-safe API layer with tRPC and Zod validation
- Include proper error handling and user feedback with toast notifications
- Set up development environment with Bun, TypeScript, and Tailwind CSS

drizzle.config.ts

@@ -0,0 +1,12 @@
+import { type Config } from "drizzle-kit";
+
+import { env } from "~/env";
+
+export default {
+  schema: "./src/server/db/schema.ts",
+  dialect: "sqlite",
+  dbCredentials: {
+    url: env.DATABASE_URL,
+  },
+  tablesFilter: ["beenvoice_*"],
+} satisfies Config;