feat: implement project export to Excel with API endpoint and UI button

README.md

@@ -54,6 +54,12 @@ A comprehensive project management system built with Next.js for managing constr
 - System activity monitoring
 - Audit trail for compliance and debugging
 
+### 📊 Data Export
+
+- Export projects to Excel format grouped by status
+- Includes project name, address, plot, WP, and finish date
+- Separate sheets for each project status (registered, in progress, fulfilled, etc.)
+
 ## Tech Stack
 
 - **Framework**: Next.js 15.1.8
@@ -178,6 +184,7 @@ src/
 - `npm run build` - Build for production
 - `npm run start` - Start production server
 - `npm run lint` - Run ESLint
+- `npm run export-projects` - Export all projects to Excel file grouped by status
 
 ## Docker Commands