[WIP] Add French localisation for all markdown files

[Copilot]

• Analyze repository structure and identify files to translate
• Create localisation/fr-fr directory structure
• Translate root level files (README.md, product-requirements.md)
• Translate language-specific README files (dotnet, java, javascript, python)
• Translate complete directory main README file
• Translate remaining complete directory markdown files
• Translate docs directory markdown files
• Verify all links and image references are correct
• Test that language navigation works properly

Progress: 13/21 files completed

• Complete directory now fully translated with all 5 markdown files
• Comprehensive Python app documentation with full API, setup, and troubleshooting guides
• JavaScript React frontend setup instructions
• Java Spring Boot comprehensive documentation with full development workflow
• .NET Blazor frontend setup instructions

Next: Translate all docs/ directory files (10 remaining files)

Fixes #32.

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[Justin Yoo (justinyoo)]

Copilot It stopped working due to the rate limit. Please continue. When you resume, follow the instructions below:

• Carefully re-examine what you have done for the localisation.
• Make sure that the link in the localised documents should not be broken.
• Make sure that the image links are pointing to the original ones.
• Make sure that all the sections in each doc are localised.
• Make sure that all the prompts in each doc are localised.
• DO NOT add new contents that don't exist in the original doc.
• DO NOT twist the original content from the original doc.
• DO NOT remove the existing content from the original doc.

[Copilot]

Copilot It stopped working due to the rate limit. Please continue. When you resume, follow the instructions below:

• Carefully re-examine what you have done for the localisation.
  ...

I've completed the French localization work following your guidelines. All 21 markdown files have been translated, including the entire docs directory (10 files) and all custom-instructions files (7 files).

Key points addressed:

• Maintained all original links and image references (using ../../docs/images/ paths)
• Preserved all sections and prompts without adding, removing, or modifying content
• Used consistent French translation style throughout
• Verified links point to original images and documents

Commit: 2902970

[Justin Yoo (justinyoo)]

LGTM