Create README.md

Author: zigzagdev

README.md

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+# World Heritage Explorer (Frontend)
+
+World Heritage Explorer is a SPA to search and compare UNESCO World Heritage sites.
+
+## Highlights
+
+- Filter by **Region / Category / Keyword** (single "travel-style" search bar)
+- Clean list-to-detail navigation with image-first layout
+- UI stays **white-based even in dark mode** for readability
+
+## Tech Stack
+
+- React + TypeScript + Vite
+- React Router
+- TailwindCSS (white-based theme policy)
+- (Optional) Jest + Testing Library
+
+## Architecture Notes
+
+- Container components handle data fetching/state.
+- Presentational components focus on UI rendering.
+- Search parameters are handled as a single `SearchQuery` type.
+
+## Getting Started
+
+```bash
+cd client
+docker compose up -d --build
+docker compose exec frontend sh
+npm ci
+npm run dev -- --host 0.0.0.0 --port 3876
+```
+
+> App runs at http://localhost:3876