Update README.md to provide a comprehensive overview of the ScriptShare platform, including features, tech stack, setup instructions, admin capabilities, and contribution guidelines.

env.example

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+# Database Configuration (Digital Ocean Managed MySQL)
+DATABASE_URL="mysql://username:password@host:port/database_name"
+
+# JWT Secret for authentication
+JWT_SECRET="your-super-secret-jwt-key-here"
+
+# App Configuration
+VITE_APP_NAME="ScriptShare"
+VITE_APP_URL="http://localhost:5173"
+
+# Optional: Analytics
+VITE_ANALYTICS_ENABLED="false"