Changes Made:
Automatic SI No Generator:
Added a "Generate New" button next to the SI No field
Created generateSiNo() function that automatically generates sequential invoice numbers
Format: INV-YYYYMMDD-001 (e.g., INV-20231215-001)
Enhanced SI No Field:
Made the SI No field read-only to prevent manual editing
Added proper styling for the SI No container with the generate button
Made it responsive for mobile devices
Smart Counter System:
Maintains a counter that increments with each new generation
Saves the counter state in localStorage to persist across sessions
Resets daily (based on date in the format)
Default Date Setting:
Automatically sets the current date when the page loads
Uses the current date in the SI No generation
User Experience Improvements:
Clear visual feedback with hover effects on the generate button
Professional invoice numbering format
Maintains consistency with existing design
Features of the Automatic SI No Generator:
Sequential Numbering: Each new invoice gets the next number in sequence
Date-Based: Includes current date in the format for better organization
Persistent Counter: Remembers the last used number even after browser restart
Professional Format: Uses standard invoice numbering convention
Easy Regeneration: Users can generate new numbers with one click
The automatic SI No generator ensures that each invoice has a unique, professional-looking identification number while maintaining the
application's ease of use and design consistency.

