Add missing project files and fix template issues for QR Code Generator

[Copilot]

Summary

This PR adds essential project files that were missing from the repository and fixes issues with the Flask template to ensure the QR Code Generator application works correctly.

Issues Fixed

1. Missing Dependencies File

Added requirements.txt with all necessary Python dependencies:

• Flask==3.0.0
• qrcode==7.4.2
• Pillow==10.1.0

Without this file, users couldn't easily install the required packages to run the application.

2. Missing .gitignore

Created a comprehensive .gitignore file to exclude:

• Generated QR code PNG files (these are temporary and shouldn't be version controlled)
• Python artifacts (__pycache__, *.pyc, etc.)
• Virtual environments
• IDE configuration files

Also added .gitkeep to ensure the static/qrcodes/ directory is tracked while ignoring its contents.

3. Template/Application Mismatch

Fixed a critical bug in templates/index.html where the template contained dead code that would never execute:

Before:

{% if request.method == 'POST' %}
    <h2>Your QR Code:</h2>
    <img src="/static/qrcodes/qr_code.png" alt="QR Code">
{% endif %}

Issues with the old code:

• The form submits to /generate which uses send_file() to download the QR code directly
• The /generate route never renders the template, so request.method == 'POST' would never be true on the index page
• The hardcoded filename qr_code.png doesn't match the timestamped filenames the app actually generates

Solution:

• Removed the dead code
• Added proper flash message display for error/warning messages
• Enhanced styling for flash messages to provide better user feedback

4. Incomplete Documentation

Significantly expanded README.md with:

• Clear installation instructions
• Usage guide
• Project structure documentation
• List of technologies used
• Prerequisites and setup steps

Testing

✅ Application starts successfully
✅ QR code generation works correctly
✅ Generated QR codes download with unique timestamped filenames
✅ Flash messages display properly for validation errors
✅ Generated files are properly ignored by git
✅ Python and template syntax validated

Screenshots

Application UI:

Repository Status

All essential files are now properly tracked and the application is fully functional. Users can clone the repository, install dependencies with pip install -r requirements.txt, and start generating QR codes immediately.

Original prompt

check if this is all correct and all files are pushed and working

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.