Runtime - v0 by Vercel

Now let me start Phase 1 by creating the core sales components and hooks. First, I'll gather context on existing patterns:

I understand the existing patterns. Now let me create the core sales components and hooks for Phase 1:

Now let me create the SalesLineTable component:

Let me try reading the file first:

The files don't exist yet. Let me create the sales components properly by reading an existing component first, then creating new ones:

I understand the pattern. Now let me create the Phase 1 components efficiently. I'll create the core sales components:

Now let me create the SalesLineTable component with Excel-like entry and profit highlighting:

Now let me create the sales components index file:

Now let me move to Phase 2 and create the core sales pages. Let me start with the Sales Invoice page:

Now let me create the Sales Invoice page:

Now let me create the Sales Returns page:

Now let me create the Sales Quotations page:

Now let me move to Phase 3 and create the advanced reports:

Let me create the Sales Report page:

Now let me create the Profitability Report page:

Now let me move to Phase 4 and update the navigation:

Now let me update the sidebar to add the Sales module:

Let me read more of the file to find where to insert the sales section:

Now I'll add the Sales module to the navigation. Let me insert it after Procurement:

Now let me also add inventory navigation. Let me insert it after Sales:

Now let me mark all tasks as done:

Complete Sales Management Module has been successfully built and integrated into your ERP system. I've created:

Phase 1 - Core Components: Custom useSales hook for profit margin calculations, abnormal discount detection, and customer price tier management; SalesLineTable component with Excel-like keyboard navigation, real-time margin highlighting, and below-cost price warnings.

Phase 2 - Transaction Pages: Sales Invoice with dynamic profit calculations, Sales Returns linked to original invoices with credit note tracking, and Sales Quotations with conversion-to-invoice workflow.

Phase 3 - Advanced Reports: Sales Report with customer/date grouping and profit analysis, Profitability Report comparing revenue vs. cost by product with margin visualization.

Phase 4 - Navigation: Fully integrated Sales and Inventory modules into the sidebar with nested reporting sections, badges for pending items, and complete module hierarchy.

The system now supports high-performance sales operations with real-time margin alerts, abnormal discount detection, and comprehensive profitability analytics following enterprise ERP patterns.