Revamp README and add main menu image

Rewrite README to provide a project overview, features, live demo link, installation and local run instructions, gameplay guide, and tech stack. Add project header, badges, and screenshot embedding. Add web/assets/img/image_game.png and remove placeholder images (web/assets/img/fakeimg.img and web/assets/img/img_test_main_menu.png) to keep assets consistent with the new documentation.

README.md

@@ -1,35 +1,117 @@
-Règles :
+<div align="center">
+  <h1 align="center">MirrorGame</h1>
+  <p align="center">
+    Browser puzzle game where you guide lasers with mirrors, tinted glass, doors, and triggers.
+    <br />
+    <br />
+    <a href="https://git.ninolbt.com/Nono/Projet_48h/issues">⚠️ Report Bug</a>
+    ·
+    <a href="https://git.ninolbt.com/Nono/Projet_48h/issues">💡 Request Feature</a>
+    ·
+    <a href="https://gamegamegame.ninolbt.com/">🎮 Play Online</a>
+  </p>
+  <p align="center">
+    <img src="https://img.shields.io/badge/language-Rust%20%7C%20HTML%20%7C%20CSS%20%7C%20JavaScript-00ADD8?style=for-the-badge&labelColor=000000" />
+    <img src="https://img.shields.io/badge/platform-Web-6E56CF?style=for-the-badge&labelColor=000000" />
+    <img src="https://img.shields.io/badge/status-Playable-28A745?style=for-the-badge&labelColor=000000" />
+  </p>
+  <p align="center">
+    <img src="./web/assets/img/image_game.png" alt="MirrorGame main menu" />
+  </p>
+</div>
 
-- Un rayon laser constant
+---
 
-- Un ou plusieurs laser
+### 🔍 Overview
 
-- Laser non movibles, peut-être allumé/éteins
+`MirrorGame` is a small laser-reflection puzzle game built during a game jam format.
 
-- Mirroirs orientables
+The goal is to route a laser beam through each level by rotating mirrors, using tinted glass to change beam color, and interacting with doors, buttons, captors, and other grid-based puzzle elements until the beam reaches the target.
 
-- Prisme (dédouble le laser ou le renvoi selon l'angle)
+The game is playable online and can also be run locally through the Rust server included in this repository.
+> Level progression is stored locally in your browser with `localStorage`.
 
-- Vitre colorée fixe ou placable par le joueur (r,j,b)
+### ✨ Features
 
-- Bouton allumable par clique souris (interaction porte, mirroir, etc)
+- **Laser puzzle gameplay**: Redirect beams across handcrafted levels to activate targets.
+- **Mirror rotation**: Rotate mirrors directly on the board to change the laser path.
+- **Colored glass placement**: Drag and drop red, blue, and yellow glass tiles onto the grid.
+- **Interactive mechanisms**: Trigger doors, buttons, captors, and rotating mirror systems.
+- **Multiple levels**: Progress through several unlockable puzzle stages.
+- **Browser save data**: Unlocked levels are persisted between sessions with `localStorage`.
+- **Rust-powered local server**: Lightweight backend serves the HTML, CSS, JS, and assets.
 
-- Bouton allumable par laser spécifique (interaction porte, mirroir, etc)
+### 🎮 Live Demo
 
+Play here: [MirrorGame](https://gamegamegame.ninolbt.com/)
 
-Rayon : 
+### 🖼️ Screenshot
 
-- Blanc -> Rebondis seulement sur les mirroirs et s'arrête contre les murs
+Main menu:
 
-- Rouge -> Allumage des récepteurs
+![MirrorGame](./web/assets/img/image_game.png)
 
-- Bleu -> Rebondis sur toutes les surfaces (murs compris)
+### 🧰 Requirements
 
-- Jaune -> Traverse tout (mirroir compris)
+- Rust and Cargo
+- A modern desktop browser
 
+---
 
-Systeme de placement d'objet par grille
+### 🚀 Installation and usage
 
-Comptes utilisateur
+#### Option 1 — Play online
 
-Optionnel : timer, tableau de score, 
+- Open [**MirrorGame**](https://gamegamegame.ninolbt.com/) in your browser.
+
+#### Option 2 — Run locally from source
+
+1. Install Rust using [rustup](https://rustup.rs/).
+2. Clone or download this repository.
+3. Open a terminal in the `backend` folder.
+4. Start the local server:
+
+   ```bash
+   cargo run
+   ```
+
+5. Open your browser at:
+
+   ```text
+   http://127.0.0.1:3500
+   ```
+
+---
+
+### 📖 How to play
+
+1. **Launch the game**
+   - Open the online version or run the project locally.
+   - Click **Play** from the main menu.
+
+2. **Understand the goal**
+   - Each level starts with a laser source.
+   - Your objective is to make the beam reach the target tile.
+
+3. **Rotate mirrors**
+   - Click mirrors to rotate them and redirect the beam.
+   - Some mirrors are controlled by puzzle mechanisms instead of direct input.
+
+4. **Use tinted glass**
+   - Drag red, blue, or yellow glass from the toolbox onto empty cells.
+   - Double-click a placed glass tile to remove it and get it back.
+
+5. **Solve interactions**
+   - Red beams can activate buttons and captors.
+   - Doors, rotators, and other level elements react depending on the puzzle setup.
+
+6. **Progress through levels**
+   - Completing a level unlocks the next one.
+   - Use the level menu to revisit unlocked stages.
+
+---
+
+### 🛠️ Tech Stack
+
+- **Backend**: Rust with `axum` and `tower-http`
+- **Frontend**: HTML, CSS, and vanilla JavaScript