Let me rename the script to .js extension which should be supported.

Good, I have all the context. Let me try running the SQL file directly since the Neon integration is connected, and also look for a Neon tool to run queries.

Found Neon tools

I can use neon_run_sql_transaction to run the migration. Let me load it.

Loaded Neon SQL tool

Now let me run the migration using the Neon SQL transaction tool.

Created DB tables

Database tables created successfully. Now let me read the current project files and start building the application.

Good - I have the full picture. The project has all shadcn/ui components, Tailwind v4, Next.js 16, Recharts, and the Neon database is ready. Let me now build the entire application. I'll start with the core database layer, theme, layout, then all pages.

Now let me update the globals.css with a professional financial-themed color palette and update the layout:

Now let me update the layout and build the app shell with sidebar navigation:

Now let me create the app shell (sidebar navigation) and dashboard layout:

Now let me create a redirect from the root to dashboard and then all the API routes:

Now let me build all the API routes:

Now let me move to building the dashboard page and its components:

Now let me build the Dashboard page:

Now let me build the Customer Management page:

Now let me build the Items Management page:

Now the Invoice Management page - the most complex one:

Now the Invoice Creation/Edit form - the most complex component:

Now let me build the Invoice Detail page with PDF export:

Now let me create the PDF generator:

Now let me build the Reports page:

Now the Settings page:

Now let me add swr to the package.json since it's needed:

Now let me mark all tasks as done:

The complete InvoiceFlow invoice management system is built. Here's a summary of everything that was created:

• Database: 5 PostgreSQL tables (settings, customers, items, invoices, invoice_items) on Neon with proper indexes and foreign key constraints
• Dashboard (/dashboard): KPI cards (total invoices, revenue, paid, unpaid), a monthly revenue bar chart, and recent invoices list with status badges
• Customers (/customers): Full CRUD with search, dialog-based add/edit forms, and deletion protection for customers that have invoices attached
• Items (/items): Complete item catalog management with name, description, unit price, and unit -- items can be selected when creating invoices
• Invoices (/invoices): Invoice listing with status filtering and search, plus a full creation form (/invoices/new) with dynamic line items, auto-calculated subtotals/VAT/discounts/grand total, and item catalog selection
• Invoice Detail (/invoices/[id]): Full view with company/customer info cards, itemized table, summary panel, status management dropdown, edit/delete actions, and PDF/print export
• PDF Export: Professional A4-styled HTML invoice with company header, itemized table, summary, watermark status badge, payment instructions, and signature line
• Reports (/reports): Status distribution pie chart, monthly revenue bar chart, daily revenue line chart, and top customers table
• Settings (/settings): Company info configuration, VAT rate, currency (USD/KHR), invoice prefix, and payment instructions