UIUX Update 2

[mtayyab0182]

Summary

Related issue

Closes #

Type of change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 💥 Breaking change (fix or feature that changes existing behaviour)
• ♻️ Refactor (no functional change)
• 📚 Documentation only
• 🧪 Tests only
• 🔧 CI / tooling / configuration
• ⬆️ Dependency update

Affected component(s)

• SLaNg — symbolic engine (src/core/, src/math/, src/utils/)
• SLaNg — converter (src/convertor.js)
• SLaNg — SvelteKit demo website (slang/website/)
• CalculusSolver — data pipeline
• CalculusSolver — training (model_trainer.py)
• CalculusSolver — inference engine
• CalculusSolver — evaluation
• CalculusSolver — tokenizer
• CalculusSolver — React website (calculussolver/website/)
• Frontend (main React app)
• Backend (API)
• Setup scripts (setup.sh / setup.ps1)
• CI / GitHub Actions workflows
• Documentation

What changed and why

Testing

Test commands run:

# e.g.
npm test                     # SLaNg unit tests
python -m pytest             # CalculusSolver tests
npm run dev                  # manual UI check

Edge cases verified:

• Zero coefficients / empty inputs
• Division by zero / undefined expressions
• Single-term expressions
• Symbolic vs. numeric inputs (SLaNg)
• Large / deeply nested expressions

Screenshots or output (if applicable)

Documentation

• New or updated SLaNg API docs added to docs/explaination/
• ARCHITECTURE.md / GUIDE.md updated (if applicable)
• README updated (if applicable)
• No documentation changes needed

Breaking changes

Checklist

• My branch is up to date with upstream/main and has no unresolved merge conflicts.
• My commit messages follow the Conventional Commits format described in CONTRIBUTING.md.
• I have not committed secrets, API keys, or personal tokens.
• I have not committed .pyc files, __pycache__/, or node_modules/.
• All existing tests pass locally.
• I have added tests that cover my change (where applicable).
• I have read and agree to the Code of Conduct.