Add LiveReload dev server for local UI style iteration

[youzi-forge]

Editing styles/templates now requires rebuilding and manual refresh, slowing iteration. A lightweight hot‑reload loop will make local styling and layout work much faster.

Proposed Change

• Add a small livereload-based dev server that:
  • Rebuilds the site via scripts/build_site.py when sources change.
  • Serves _site/ at http://127.0.0.1:8000 with automatic browser refresh.
  • Watches good_first_issues.md and scripts/build_site.py (and later CSS if extracted).
• Update docs
• Keep livereload as an optional local dev dependency (do not add to CI‑used requirements.txt), or create a requirements-dev.txt

[Jayasuryaprakashreddy333]

hi i read all documentation and understand issue could you please assign these issue to me so that i can start my contribution journey!.

[Yugenjr]

I love this idea of the app so much . And would like to contribute something to this. Could you please allow me to contribute!