Fix teacher navbar broken routes and add Markdown rendering in Virtual Lab

.gitignore

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+node_modules/
+dist/
+.env
+*.log
+.DS_Store

README.md

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-# LAB
+# Virtual Science Lab 🔬
 
-This repository is initialized for the LAB project.
-# labbbb
+A full-stack web platform for interactive virtual science experiments for Algerian students (primary, middle, and high school).
+
+## Features
+
+- 🧪 **3D Virtual Experiments** — Interactive React Three Fiber simulations (electric circuit, free fall, chemistry tests, and more)
+- 🎓 **Role-based Access** — Separate student and teacher dashboards
+- �� **Progress Tracking** — Quiz scores and experiment completion saved per student
+- 🏫 **Teacher Analytics** — Filter students by wilaya, commune, school, and level
+- 🔐 **JWT Authentication** — Secure login with bcrypt-hashed passwords
+
+## Tech Stack
+
+- **Frontend:** React 18, Vite, Tailwind CSS v4, React Three Fiber (Three.js), React Router v6
+- **Backend:** Node.js, Express 4
+- **Database:** MongoDB with Mongoose 7
+- **Auth:** JWT + bcryptjs
+
+## Quick Start
+
+### Prerequisites
+- Node.js 18+
+- MongoDB (local or Atlas)
+
+### Installation
+
+```bash
+# Clone and install
+git clone <repo-url>
+cd virtual-science-lab
+
+# Install server dependencies
+cd server && npm install
+
+# Install client dependencies
+cd ../client && npm install
+
+# Configure environment
+cp server/.env.example server/.env
+# Edit server/.env — set MONGO_URI and JWT_SECRET
+```
+
+### Running in Development
+
+```bash
+# Terminal 1 — Backend
+cd server && npm run dev
+
+# Terminal 2 — Frontend
+cd client && npm run dev
+```
+
+### Seed Experiments
+
+After starting the server with a MongoDB connection:
+
+```bash
+curl -X POST http://localhost:5000/api/experiments/seed
+```
+
+## Project Structure
+
+```
+virtual-science-lab/
+├── client/                    # React frontend
+│   └── src/
+│       ├── api/axios.js       # Axios instance
+│       ├── contexts/          # AuthContext
+│       ├── components/        # Layout (sidebar)
+│       └── pages/             # Login, Register, StudentDashboard, VirtualLab, TeacherDashboard
+├── server/                    # Express API
+│   ├── models/                # User, Student, Experiment, Result
+│   ├── routes/                # auth, students, experiments, results, teacher
+│   └── middleware/auth.js     # JWT verification
+└── docs/                      # Platform overview & prompt engineering guide
+```
+
+## API
+
+See [docs/PLATFORM_OVERVIEW.md](docs/PLATFORM_OVERVIEW.md) for full API documentation.
+
+## License
+
+MIT

client/.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?

client/README.md

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+# React + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Oxc](https://oxc.rs)
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/)
+
+## React Compiler
+
+The React Compiler is not enabled on this template because of its impact on dev & build performances. To add it, see [this documentation](https://react.dev/learn/react-compiler/installation).
+
+## Expanding the ESLint configuration
+
+If you are developing a production application, we recommend using TypeScript with type-aware lint rules enabled. Check out the [TS template](https://github.com/vitejs/vite/tree/main/packages/create-vite/template-react-ts) for information on how to integrate TypeScript and [`typescript-eslint`](https://typescript-eslint.io) in your project.

client/eslint.config.js

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+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import { defineConfig, globalIgnores } from 'eslint/config'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{js,jsx}'],
+    extends: [
+      js.configs.recommended,
+      reactHooks.configs.flat.recommended,
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        ecmaFeatures: { jsx: true },
+        sourceType: 'module',
+      },
+    },
+    rules: {
+      'no-unused-vars': ['error', { varsIgnorePattern: '^[A-Z_]' }],
+    },
+  },
+])

client/index.html

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+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>client</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>